R&S®SMC100A
Signal Generator
Operating Manual
(>;XÊP)
Operating Manual
Test & Measurement
1411.4060.32 ─ 09
This document describes the R&S®SMC100A, stock no. 1411.4002K02 and its options.
● R&S®SMC-B1
●
R&S®SMC-B101/-B103
●
R&S®SMC-K4
This manual describes firmware version FW 3.01.134.xx and later of the R&S®SMC100A.
© 2017 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: +49 89 41 29 - 0
Fax: +49 89 41 29 12 164
Email: info@rohde-schwarz.com
Internet: www.rohde-schwarz.com
Subject to change – Data without tolerance limits is not binding.
R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
Trade names are trademarks of their owners.
The following abbreviations are used throughout this manual: R&S®SMC100A is abbreviated as R&S SMC, and R&S®NRP-Zxx
power sensors are abbreviated as R&S NRP sensors.
Basic Safety Instructions
Always read through and comply with the following safety instructions!
All plants and locations of the Rohde & Schwarz group of companies make every effort to keep the safety
standards of our products up to date and to offer our customers the highest possible degree of safety. Our
products and the auxiliary equipment they require are designed, built and tested in accordance with the
safety standards that apply in each case. Compliance with these standards is continuously monitored by
our quality assurance system. The product described here has been designed, built and tested in
accordance with the EC Certificate of Conformity and has left the manufacturer’s plant in a condition fully
complying with safety standards. To maintain this condition and to ensure safe operation, you must
observe all instructions and warnings provided in this manual. If you have any questions regarding these
safety instructions, the Rohde & Schwarz group of companies will be happy to answer them.
Furthermore, it is your responsibility to use the product in an appropriate manner. This product is designed
for use solely in industrial and laboratory environments or, if expressly permitted, also in the field and must
not be used in any way that may cause personal injury or property damage. You are responsible if the
product is used for any purpose other than its designated purpose or in disregard of the manufacturer's
instructions. The manufacturer shall assume no responsibility for such use of the product.
The product is used for its designated purpose if it is used in accordance with its product documentation
and within its performance limits (see data sheet, documentation, the following safety instructions). Using
the product requires technical skills and, in some cases, a basic knowledge of English. It is therefore
essential that only skilled and specialized staff or thoroughly trained personnel with the required skills be
allowed to use the product. If personal safety gear is required for using Rohde & Schwarz products, this
will be indicated at the appropriate place in the product documentation. Keep the basic safety instructions
and the product documentation in a safe place and pass them on to the subsequent users.
Observing the safety instructions will help prevent personal injury or damage of any kind caused by
dangerous situations. Therefore, carefully read through and adhere to the following safety instructions
before and when using the product. It is also absolutely essential to observe the additional safety
instructions on personal safety, for example, that appear in relevant parts of the product documentation. In
these safety instructions, the word "product" refers to all merchandise sold and distributed by the Rohde &
Schwarz group of companies, including instruments, systems and all accessories. For product-specific
information, see the data sheet and the product documentation.
Safety labels on products
The following safety labels are used on products to warn against risks and dangers.
Symbol
Meaning
Notice, general danger location
Symbol
Meaning
ON/OFF Power
Observe product documentation
Caution when handling heavy equipment
Standby indication
Danger of electric shock
Direct current (DC)
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Basic Safety Instructions
Symbol
Meaning
Symbol
Meaning
Caution ! Hot surface
Alternating current (AC)
Protective conductor terminal
To identify any terminal which is intended for
connection to an external conductor for
protection against electric shock in case of a
fault, or the terminal of a protective earth
Direct/alternating current (DC/AC)
Earth (Ground)
Class II Equipment
to identify equipment meeting the safety
requirements specified for Class II equipment
(device protected by double or reinforced
insulation)
Frame or chassis Ground terminal
EU labeling for batteries and accumulators
For additional information, see section "Waste
disposal/Environmental protection", item 1.
Be careful when handling electrostatic sensitive
devices
EU labeling for separate collection of electrical
and electronic devices
For additional information, see section "Waste
disposal/Environmental protection", item 2.
Warning! Laser radiation
For additional information, see section
"Operation", item 7.
Signal words and their meaning
The following signal words are used in the product documentation in order to warn the reader about risks
and dangers.
Indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
Indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
Indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
Indicates information considered important, but not hazard-related, e.g.
messages relating to property damage.
In the product documentation, the word ATTENTION is used synonymously.
These signal words are in accordance with the standard definition for civil applications in the European
Economic Area. Definitions that deviate from the standard definition may also exist in other economic
areas or military applications. It is therefore essential to make sure that the signal words described here
are always used only in connection with the related product documentation and the related product. The
use of signal words in connection with unrelated products or documentation can result in misinterpretation
and in personal injury or material damage.
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Basic Safety Instructions
Operating states and operating positions
The product may be operated only under the operating conditions and in the positions specified by the
manufacturer, without the product's ventilation being obstructed. If the manufacturer's specifications are
not observed, this can result in electric shock, fire and/or serious personal injury or death. Applicable local
or national safety regulations and rules for the prevention of accidents must be observed in all work
performed.
1. Unless otherwise specified, the following requirements apply to Rohde & Schwarz products:
predefined operating position is always with the housing floor facing down, IP protection 2X, use only
indoors, max. operating altitude 2000 m above sea level, max. transport altitude 4500 m above sea
level. A tolerance of ±10 % shall apply to the nominal voltage and ±5 % to the nominal frequency,
overvoltage category 2, pollution degree 2.
2. Do not place the product on surfaces, vehicles, cabinets or tables that for reasons of weight or stability
are unsuitable for this purpose. Always follow the manufacturer's installation instructions when
installing the product and fastening it to objects or structures (e.g. walls and shelves). An installation
that is not carried out as described in the product documentation could result in personal injury or
even death.
3. Do not place the product on heat-generating devices such as radiators or fan heaters. The ambient
temperature must not exceed the maximum temperature specified in the product documentation or in
the data sheet. Product overheating can cause electric shock, fire and/or serious personal injury or
even death.
Electrical safety
If the information on electrical safety is not observed either at all or to the extent necessary, electric shock,
fire and/or serious personal injury or death may occur.
1. Prior to switching on the product, always ensure that the nominal voltage setting on the product
matches the nominal voltage of the mains-supply network. If a different voltage is to be set, the power
fuse of the product may have to be changed accordingly.
2. In the case of products of safety class I with movable power cord and connector, operation is
permitted only on sockets with a protective conductor contact and protective conductor.
3. Intentionally breaking the protective conductor either in the feed line or in the product itself is not
permitted. Doing so can result in the danger of an electric shock from the product. If extension cords
or connector strips are implemented, they must be checked on a regular basis to ensure that they are
safe to use.
4. If there is no power switch for disconnecting the product from the mains, or if the power switch is not
suitable for this purpose, use the plug of the connecting cable to disconnect the product from the
mains. In such cases, always ensure that the power plug is easily reachable and accessible at all
times. For example, if the power plug is the disconnecting device, the length of the connecting cable
must not exceed 3 m. Functional or electronic switches are not suitable for providing disconnection
from the AC supply network. If products without power switches are integrated into racks or systems,
the disconnecting device must be provided at the system level.
5. Never use the product if the power cable is damaged. Check the power cables on a regular basis to
ensure that they are in proper operating condition. By taking appropriate safety measures and
carefully laying the power cable, ensure that the cable cannot be damaged and that no one can be
hurt by, for example, tripping over the cable or suffering an electric shock.
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Basic Safety Instructions
6. The product may be operated only from TN/TT supply networks fuse-protected with max. 16 A (higher
fuse only after consulting with the Rohde & Schwarz group of companies).
7. Do not insert the plug into sockets that are dusty or dirty. Insert the plug firmly and all the way into the
socket provided for this purpose. Otherwise, sparks that result in fire and/or injuries may occur.
8. Do not overload any sockets, extension cords or connector strips; doing so can cause fire or electric
shocks.
9. For measurements in circuits with voltages Vrms > 30 V, suitable measures (e.g. appropriate
measuring equipment, fuse protection, current limiting, electrical separation, insulation) should be
taken to avoid any hazards.
10. Ensure that the connections with information technology equipment, e.g. PCs or other industrial
computers, comply with the IEC 60950-1 / EN 60950-1 or IEC 61010-1 / EN 61010-1 standards that
apply in each case.
11. Unless expressly permitted, never remove the cover or any part of the housing while the product is in
operation. Doing so will expose circuits and components and can lead to injuries, fire or damage to the
product.
12. If a product is to be permanently installed, the connection between the protective conductor terminal
on site and the product's protective conductor must be made first before any other connection is
made. The product may be installed and connected only by a licensed electrician.
13. For permanently installed equipment without built-in fuses, circuit breakers or similar protective
devices, the supply circuit must be fuse-protected in such a way that anyone who has access to the
product, as well as the product itself, is adequately protected from injury or damage.
14. Use suitable overvoltage protection to ensure that no overvoltage (such as that caused by a bolt of
lightning) can reach the product. Otherwise, the person operating the product will be exposed to the
danger of an electric shock.
15. Any object that is not designed to be placed in the openings of the housing must not be used for this
purpose. Doing so can cause short circuits inside the product and/or electric shocks, fire or injuries.
16. Unless specified otherwise, products are not liquid-proof (see also section "Operating states and
operating positions", item 1). Therefore, the equipment must be protected against penetration by
liquids. If the necessary precautions are not taken, the user may suffer electric shock or the product
itself may be damaged, which can also lead to personal injury.
17. Never use the product under conditions in which condensation has formed or can form in or on the
product, e.g. if the product has been moved from a cold to a warm environment. Penetration by water
increases the risk of electric shock.
18. Prior to cleaning the product, disconnect it completely from the power supply (e.g. AC supply network
or battery). Use a soft, non-linting cloth to clean the product. Never use chemical cleaning agents such
as alcohol, acetone or diluents for cellulose lacquers.
Operation
1. Operating the products requires special training and intense concentration. Make sure that persons
who use the products are physically, mentally and emotionally fit enough to do so; otherwise, injuries
or material damage may occur. It is the responsibility of the employer/operator to select suitable
personnel for operating the products.
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Basic Safety Instructions
2. Before you move or transport the product, read and observe the section titled "Transport".
3. As with all industrially manufactured goods, the use of substances that induce an allergic reaction
(allergens) such as nickel cannot be generally excluded. If you develop an allergic reaction (such as a
skin rash, frequent sneezing, red eyes or respiratory difficulties) when using a Rohde & Schwarz
product, consult a physician immediately to determine the cause and to prevent health problems or
stress.
4. Before you start processing the product mechanically and/or thermally, or before you take it apart, be
sure to read and pay special attention to the section titled "Waste disposal/Environmental protection",
item 1.
5. Depending on the function, certain products such as RF radio equipment can produce an elevated
level of electromagnetic radiation. Considering that unborn babies require increased protection,
pregnant women must be protected by appropriate measures. Persons with pacemakers may also be
exposed to risks from electromagnetic radiation. The employer/operator must evaluate workplaces
where there is a special risk of exposure to radiation and, if necessary, take measures to avert the
potential danger.
6. Should a fire occur, the product may release hazardous substances (gases, fluids, etc.) that can
cause health problems. Therefore, suitable measures must be taken, e.g. protective masks and
protective clothing must be worn.
7. Laser products are given warning labels that are standardized according to their laser class. Lasers
can cause biological harm due to the properties of their radiation and due to their extremely
concentrated electromagnetic power. If a laser product (e.g. a CD/DVD drive) is integrated into a
Rohde & Schwarz product, absolutely no other settings or functions may be used as described in the
product documentation. The objective is to prevent personal injury (e.g. due to laser beams).
8. EMC classes (in line with EN 55011/CISPR 11, and analogously with EN 55022/CISPR 22,
EN 55032/CISPR 32)
 Class A equipment:
Equipment suitable for use in all environments except residential environments and environments
that are directly connected to a low-voltage supply network that supplies residential buildings
Note: Class A equipment is intended for use in an industrial environment. This equipment may
cause radio disturbances in residential environments, due to possible conducted as well as
radiated disturbances. In this case, the operator may be required to take appropriate measures to
eliminate these disturbances.
 Class B equipment:
Equipment suitable for use in residential environments and environments that are directly
connected to a low-voltage supply network that supplies residential buildings
Repair and service
1. The product may be opened only by authorized, specially trained personnel. Before any work is
performed on the product or before the product is opened, it must be disconnected from the AC supply
network. Otherwise, personnel will be exposed to the risk of an electric shock.
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Basic Safety Instructions
2. Adjustments, replacement of parts, maintenance and repair may be performed only by electrical
experts authorized by Rohde & Schwarz. Only original parts may be used for replacing parts relevant
to safety (e.g. power switches, power transformers, fuses). A safety test must always be performed
after parts relevant to safety have been replaced (visual inspection, protective conductor test,
insulation resistance measurement, leakage current measurement, functional test). This helps ensure
the continued safety of the product.
Batteries and rechargeable batteries/cells
If the information regarding batteries and rechargeable batteries/cells is not observed either at all or to the
extent necessary, product users may be exposed to the risk of explosions, fire and/or serious personal
injury, and, in some cases, death. Batteries and rechargeable batteries with alkaline electrolytes (e.g.
lithium cells) must be handled in accordance with the EN 62133 standard.
1. Cells must not be taken apart or crushed.
2. Cells or batteries must not be exposed to heat or fire. Storage in direct sunlight must be avoided.
Keep cells and batteries clean and dry. Clean soiled connectors using a dry, clean cloth.
3. Cells or batteries must not be short-circuited. Cells or batteries must not be stored in a box or in a
drawer where they can short-circuit each other, or where they can be short-circuited by other
conductive materials. Cells and batteries must not be removed from their original packaging until they
are ready to be used.
4. Cells and batteries must not be exposed to any mechanical shocks that are stronger than permitted.
5. If a cell develops a leak, the fluid must not be allowed to come into contact with the skin or eyes. If
contact occurs, wash the affected area with plenty of water and seek medical aid.
6. Improperly replacing or charging cells or batteries that contain alkaline electrolytes (e.g. lithium cells)
can cause explosions. Replace cells or batteries only with the matching Rohde & Schwarz type (see
parts list) in order to ensure the safety of the product.
7. Cells and batteries must be recycled and kept separate from residual waste. Rechargeable batteries
and normal batteries that contain lead, mercury or cadmium are hazardous waste. Observe the
national regulations regarding waste disposal and recycling.
8. Follow the transport stipulations of the carrier (IATA-DGR, IMDG-Code, ADR, RID) when returning
lithium batteries to Rohde & Schwarz subsidiaries.
Transport
1. The product may be very heavy. Therefore, the product must be handled with care. In some cases,
the user may require a suitable means of lifting or moving the product (e.g. with a lift-truck) to avoid
back or other physical injuries.
2. Handles on the products are designed exclusively to enable personnel to transport the product. It is
therefore not permissible to use handles to fasten the product to or on transport equipment such as
cranes, fork lifts, wagons, etc. The user is responsible for securely fastening the products to or on the
means of transport or lifting. Observe the safety regulations of the manufacturer of the means of
transport or lifting. Noncompliance can result in personal injury or material damage.
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Instrucciones de seguridad elementales
3. If you use the product in a vehicle, it is the sole responsibility of the driver to drive the vehicle safely
and properly. The manufacturer assumes no responsibility for accidents or collisions. Never use the
product in a moving vehicle if doing so could distract the driver of the vehicle. Adequately secure the
product in the vehicle to prevent injuries or other damage in the event of an accident.
Waste disposal/Environmental protection
1. Specially marked equipment has a battery or accumulator that must not be disposed of with unsorted
municipal waste, but must be collected separately. It may only be disposed of at a suitable collection
point or via a Rohde & Schwarz customer service center.
2. Waste electrical and electronic equipment must not be disposed of with unsorted municipal waste, but
must be collected separately.
Rohde & Schwarz GmbH & Co. KG has developed a disposal concept and takes full responsibility for
take-back obligations and disposal obligations for manufacturers within the EU. Contact your
Rohde & Schwarz customer service center for environmentally responsible disposal of the product.
3. If products or their components are mechanically and/or thermally processed in a manner that goes
beyond their intended use, hazardous substances (heavy-metal dust such as lead, beryllium, nickel)
may be released. For this reason, the product may only be disassembled by specially trained
personnel. Improper disassembly may be hazardous to your health. National waste disposal
regulations must be observed.
4. If handling the product releases hazardous substances or fuels that must be disposed of in a special
way, e.g. coolants or engine oils that must be replenished regularly, the safety instructions of the
manufacturer of the hazardous substances or fuels and the applicable regional waste disposal
regulations must be observed. Also observe the relevant safety instructions in the product
documentation. The improper disposal of hazardous substances or fuels can cause health problems
and lead to environmental damage.
For additional information about environmental protection, visit the Rohde & Schwarz website.
Instrucciones de seguridad elementales
¡Es imprescindible leer y cumplir las siguientes instrucciones e informaciones de seguridad!
El principio del grupo de empresas Rohde & Schwarz consiste en tener nuestros productos siempre al día
con los estándares de seguridad y de ofrecer a nuestros clientes el máximo grado de seguridad. Nuestros
productos y todos los equipos adicionales son siempre fabricados y examinados según las normas de
seguridad vigentes. Nuestro sistema de garantía de calidad controla constantemente que sean cumplidas
estas normas. El presente producto ha sido fabricado y examinado según el certificado de conformidad
de la UE y ha salido de nuestra planta en estado impecable según los estándares técnicos de seguridad.
Para poder preservar este estado y garantizar un funcionamiento libre de peligros, el usuario deberá
atenerse a todas las indicaciones, informaciones de seguridad y notas de alerta. El grupo de empresas
Rohde & Schwarz está siempre a su disposición en caso de que tengan preguntas referentes a estas
informaciones de seguridad.
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Instrucciones de seguridad elementales
Además queda en la responsabilidad del usuario utilizar el producto en la forma debida. Este producto
está destinado exclusivamente al uso en la industria y el laboratorio o, si ha sido expresamente
autorizado, para aplicaciones de campo y de ninguna manera deberá ser utilizado de modo que alguna
persona/cosa pueda sufrir daño. El uso del producto fuera de sus fines definidos o sin tener en cuenta las
instrucciones del fabricante queda en la responsabilidad del usuario. El fabricante no se hace en ninguna
forma responsable de consecuencias a causa del mal uso del producto.
Se parte del uso correcto del producto para los fines definidos si el producto es utilizado conforme a las
indicaciones de la correspondiente documentación del producto y dentro del margen de rendimiento
definido (ver hoja de datos, documentación, informaciones de seguridad que siguen). El uso del producto
hace necesarios conocimientos técnicos y ciertos conocimientos del idioma inglés. Por eso se debe tener
en cuenta que el producto solo pueda ser operado por personal especializado o personas instruidas en
profundidad con las capacidades correspondientes. Si fuera necesaria indumentaria de seguridad para el
uso de productos de Rohde & Schwarz, encontraría la información debida en la documentación del
producto en el capítulo correspondiente. Guarde bien las informaciones de seguridad elementales, así
como la documentación del producto, y entréguelas a usuarios posteriores.
Tener en cuenta las informaciones de seguridad sirve para evitar en lo posible lesiones o daños por
peligros de toda clase. Por eso es imprescindible leer detalladamente y comprender por completo las
siguientes informaciones de seguridad antes de usar el producto, y respetarlas durante el uso del
producto. Deberán tenerse en cuenta todas las demás informaciones de seguridad, como p. ej. las
referentes a la protección de personas, que encontrarán en el capítulo correspondiente de la
documentación del producto y que también son de obligado cumplimiento. En las presentes
informaciones de seguridad se recogen todos los objetos que distribuye el grupo de empresas
Rohde & Schwarz bajo la denominación de "producto", entre ellos también aparatos, instalaciones así
como toda clase de accesorios. Los datos específicos del producto figuran en la hoja de datos y en la
documentación del producto.
Señalización de seguridad de los productos
Las siguientes señales de seguridad se utilizan en los productos para advertir sobre riesgos y peligros.
Símbolo
Significado
Aviso: punto de peligro general
Observar la documentación del producto
Símbolo
Significado
Tensión de alimentación de PUESTA EN
MARCHA / PARADA
Atención en el manejo de dispositivos de peso
elevado
Indicación de estado de espera (standby)
Peligro de choque eléctrico
Corriente continua (DC)
Advertencia: superficie caliente
Corriente alterna (AC)
Conexión a conductor de protección
Corriente continua / Corriente alterna (DC/AC)
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Instrucciones de seguridad elementales
Símbolo
Significado
Símbolo
Significado
Conexión a tierra
El aparato está protegido en su totalidad por un
aislamiento doble (reforzado)
Conexión a masa
Distintivo de la UE para baterías y
acumuladores
Más información en la sección
"Eliminación/protección del medio ambiente",
punto 1.
Aviso: Cuidado en el manejo de dispositivos
sensibles a la electrostática (ESD)
Distintivo de la UE para la eliminación por
separado de dispositivos eléctricos y
electrónicos
Más información en la sección
"Eliminación/protección del medio ambiente",
punto 2.
Advertencia: rayo láser
Más información en la sección
"Funcionamiento", punto 7.
Palabras de señal y su significado
En la documentación del producto se utilizan las siguientes palabras de señal con el fin de advertir contra
riesgos y peligros.
Indica una situación de peligro que, si no se evita, causa lesiones
graves o incluso la muerte.
Indica una situación de peligro que, si no se evita, puede causar
lesiones graves o incluso la muerte.
Indica una situación de peligro que, si no se evita, puede causar
lesiones leves o moderadas.
Indica información que se considera importante, pero no en relación
con situaciones de peligro; p. ej., avisos sobre posibles daños
materiales.
En la documentación del producto se emplea de forma sinónima el
término CUIDADO.
Las palabras de señal corresponden a la definición habitual para aplicaciones civiles en el área
económica europea. Pueden existir definiciones diferentes a esta definición en otras áreas económicas o
en aplicaciones militares. Por eso se deberá tener en cuenta que las palabras de señal aquí descritas
sean utilizadas siempre solamente en combinación con la correspondiente documentación del producto y
solamente en combinación con el producto correspondiente. La utilización de las palabras de señal en
combinación con productos o documentaciones que no les correspondan puede llevar a interpretaciones
equivocadas y tener por consecuencia daños en personas u objetos.
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Instrucciones de seguridad elementales
Estados operativos y posiciones de funcionamiento
El producto solamente debe ser utilizado según lo indicado por el fabricante respecto a los estados
operativos y posiciones de funcionamiento sin que se obstruya la ventilación. Si no se siguen las
indicaciones del fabricante, pueden producirse choques eléctricos, incendios y/o lesiones graves con
posible consecuencia de muerte. En todos los trabajos deberán ser tenidas en cuenta las normas
nacionales y locales de seguridad del trabajo y de prevención de accidentes.
1. Si no se convino de otra manera, es para los productos Rohde & Schwarz válido lo que sigue:
como posición de funcionamiento se define por principio la posición con el suelo de la caja para
abajo, modo de protección IP 2X, uso solamente en estancias interiores, utilización hasta 2000 m
sobre el nivel del mar, transporte hasta 4500 m sobre el nivel del mar. Se aplicará una tolerancia de
±10 % sobre el voltaje nominal y de ±5 % sobre la frecuencia nominal. Categoría de sobrecarga
eléctrica 2, índice de suciedad 2.
2. No sitúe el producto encima de superficies, vehículos, estantes o mesas, que por sus características
de peso o de estabilidad no sean aptos para él. Siga siempre las instrucciones de instalación del
fabricante cuando instale y asegure el producto en objetos o estructuras (p. ej. paredes y estantes). Si
se realiza la instalación de modo distinto al indicado en la documentación del producto, se pueden
causar lesiones o, en determinadas circunstancias, incluso la muerte.
3. No ponga el producto sobre aparatos que generen calor (p. ej. radiadores o calefactores). La
temperatura ambiente no debe superar la temperatura máxima especificada en la documentación del
producto o en la hoja de datos. En caso de sobrecalentamiento del producto, pueden producirse
choques eléctricos, incendios y/o lesiones graves con posible consecuencia de muerte.
Seguridad eléctrica
Si no se siguen (o se siguen de modo insuficiente) las indicaciones del fabricante en cuanto a seguridad
eléctrica, pueden producirse choques eléctricos, incendios y/o lesiones graves con posible consecuencia
de muerte.
1. Antes de la puesta en marcha del producto se deberá comprobar siempre que la tensión
preseleccionada en el producto coincida con la de la red de alimentación eléctrica. Si es necesario
modificar el ajuste de tensión, también se deberán cambiar en caso dado los fusibles
correspondientes del producto.
2. Los productos de la clase de protección I con alimentación móvil y enchufe individual solamente
podrán enchufarse a tomas de corriente con contacto de seguridad y con conductor de protección
conectado.
3. Queda prohibida la interrupción intencionada del conductor de protección, tanto en la toma de
corriente como en el mismo producto. La interrupción puede tener como consecuencia el riesgo de
que el producto sea fuente de choques eléctricos. Si se utilizan cables alargadores o regletas de
enchufe, deberá garantizarse la realización de un examen regular de los mismos en cuanto a su
estado técnico de seguridad.
4. Si el producto no está equipado con un interruptor para desconectarlo de la red, o bien si el
interruptor existente no resulta apropiado para la desconexión de la red, el enchufe del cable de
conexión se deberá considerar como un dispositivo de desconexión.
El dispositivo de desconexión se debe poder alcanzar fácilmente y debe estar siempre bien accesible.
Si, p. ej., el enchufe de conexión a la red es el dispositivo de desconexión, la longitud del cable de
conexión no debe superar 3 m).
Los interruptores selectores o electrónicos no son aptos para el corte de la red eléctrica. Si se
1171.0000.42 - 09
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Instrucciones de seguridad elementales
integran productos sin interruptor en bastidores o instalaciones, se deberá colocar el interruptor en el
nivel de la instalación.
5. No utilice nunca el producto si está dañado el cable de conexión a red. Compruebe regularmente el
correcto estado de los cables de conexión a red. Asegúrese, mediante las medidas de protección y
de instalación adecuadas, de que el cable de conexión a red no pueda ser dañado o de que nadie
pueda ser dañado por él, p. ej. al tropezar o por un choque eléctrico.
6. Solamente está permitido el funcionamiento en redes de alimentación TN/TT aseguradas con fusibles
de 16 A como máximo (utilización de fusibles de mayor amperaje solo previa consulta con el grupo de
empresas Rohde & Schwarz).
7. Nunca conecte el enchufe en tomas de corriente sucias o llenas de polvo. Introduzca el enchufe por
completo y fuertemente en la toma de corriente. La no observación de estas medidas puede provocar
chispas, fuego y/o lesiones.
8. No sobrecargue las tomas de corriente, los cables alargadores o las regletas de enchufe ya que esto
podría causar fuego o choques eléctricos.
9. En las mediciones en circuitos de corriente con una tensión U eff > 30 V se deberán tomar las medidas
apropiadas para impedir cualquier peligro (p. ej. medios de medición adecuados, seguros, limitación
de tensión, corte protector, aislamiento etc.).
10. Para la conexión con dispositivos informáticos como un PC o un ordenador industrial, debe
comprobarse que éstos cumplan los estándares IEC60950-1/EN60950-1 o IEC61010-1/EN 61010-1
válidos en cada caso.
11. A menos que esté permitido expresamente, no retire nunca la tapa ni componentes de la carcasa
mientras el producto esté en servicio. Esto pone a descubierto los cables y componentes eléctricos y
puede causar lesiones, fuego o daños en el producto.
12. Si un producto se instala en un lugar fijo, se deberá primero conectar el conductor de protección fijo
con el conductor de protección del producto antes de hacer cualquier otra conexión. La instalación y
la conexión deberán ser efectuadas por un electricista especializado.
13. En el caso de dispositivos fijos que no estén provistos de fusibles, interruptor automático ni otros
mecanismos de seguridad similares, el circuito de alimentación debe estar protegido de modo que
todas las personas que puedan acceder al producto, así como el producto mismo, estén a salvo de
posibles daños.
14. Todo producto debe estar protegido contra sobretensión (debida p. ej. a una caída del rayo) mediante
los correspondientes sistemas de protección. Si no, el personal que lo utilice quedará expuesto al
peligro de choque eléctrico.
15. No debe introducirse en los orificios de la caja del aparato ningún objeto que no esté destinado a ello.
Esto puede producir cortocircuitos en el producto y/o puede causar choques eléctricos, fuego o
lesiones.
16. Salvo indicación contraria, los productos no están impermeabilizados (ver también el capítulo
"Estados operativos y posiciones de funcionamiento", punto 1). Por eso es necesario tomar las
medidas necesarias para evitar la entrada de líquidos. En caso contrario, existe peligro de choque
eléctrico para el usuario o de daños en el producto, que también pueden redundar en peligro para las
personas.
1171.0000.42 - 09
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Instrucciones de seguridad elementales
17. No utilice el producto en condiciones en las que pueda producirse o ya se hayan producido
condensaciones sobre el producto o en el interior de éste, como p. ej. al desplazarlo de un lugar frío a
otro caliente. La entrada de agua aumenta el riesgo de choque eléctrico.
18. Antes de la limpieza, desconecte por completo el producto de la alimentación de tensión (p. ej. red de
alimentación o batería). Realice la limpieza de los aparatos con un paño suave, que no se deshilache.
No utilice bajo ningún concepto productos de limpieza químicos como alcohol, acetona o diluyentes
para lacas nitrocelulósicas.
Funcionamiento
1. El uso del producto requiere instrucciones especiales y una alta concentración durante el manejo.
Debe asegurarse que las personas que manejen el producto estén a la altura de los requerimientos
necesarios en cuanto a aptitudes físicas, psíquicas y emocionales, ya que de otra manera no se
pueden excluir lesiones o daños de objetos. El empresario u operador es responsable de seleccionar
el personal usuario apto para el manejo del producto.
2. Antes de desplazar o transportar el producto, lea y tenga en cuenta el capítulo "Transporte".
3. Como con todo producto de fabricación industrial no puede quedar excluida en general la posibilidad
de que se produzcan alergias provocadas por algunos materiales empleados ―los llamados
alérgenos (p. ej. el níquel)―. Si durante el manejo de productos Rohde & Schwarz se producen
reacciones alérgicas, como p. ej. irritaciones cutáneas, estornudos continuos, enrojecimiento de la
conjuntiva o dificultades respiratorias, debe avisarse inmediatamente a un médico para investigar las
causas y evitar cualquier molestia o daño a la salud.
4. Antes de la manipulación mecánica y/o térmica o el desmontaje del producto, debe tenerse en cuenta
imprescindiblemente el capítulo "Eliminación/protección del medio ambiente", punto 1.
5. Ciertos productos, como p. ej. las instalaciones de radiocomunicación RF, pueden a causa de su
función natural, emitir una radiación electromagnética aumentada. Deben tomarse todas las medidas
necesarias para la protección de las mujeres embarazadas. También las personas con marcapasos
pueden correr peligro a causa de la radiación electromagnética. El empresario/operador tiene la
obligación de evaluar y señalizar las áreas de trabajo en las que exista un riesgo elevado de
exposición a radiaciones.
6. Tenga en cuenta que en caso de incendio pueden desprenderse del producto sustancias tóxicas
(gases, líquidos etc.) que pueden generar daños a la salud. Por eso, en caso de incendio deben
usarse medidas adecuadas, como p. ej. máscaras antigás e indumentaria de protección.
7. Los productos con láser están provistos de indicaciones de advertencia normalizadas en función de la
clase de láser del que se trate. Los rayos láser pueden provocar daños de tipo biológico a causa de
las propiedades de su radiación y debido a su concentración extrema de potencia electromagnética.
En caso de que un producto Rohde & Schwarz contenga un producto láser (p. ej. un lector de
CD/DVD), no debe usarse ninguna otra configuración o función aparte de las descritas en la
documentación del producto, a fin de evitar lesiones (p. ej. debidas a irradiación láser).
8. Clases de compatibilidad electromagnética (conforme a EN 55011 / CISPR 11; y en analogía con EN
55022 / CISPR 22, EN 55032 / CISPR 32)
 Aparato de clase A:
Aparato adecuado para su uso en todos los entornos excepto en los residenciales y en aquellos
conectados directamente a una red de distribución de baja tensión que suministra corriente a
edificios residenciales.
Nota: Los aparatos de clase A están destinados al uso en entornos industriales. Estos aparatos
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Instrucciones de seguridad elementales

pueden causar perturbaciones radioeléctricas en entornos residenciales debido a posibles
perturbaciones guiadas o radiadas. En este caso, se le podrá solicitar al operador que tome las
medidas adecuadas para eliminar estas perturbaciones.
Aparato de clase B:
Aparato adecuado para su uso en entornos residenciales, así como en aquellos conectados
directamente a una red de distribución de baja tensión que suministra corriente a edificios
residenciales.
Reparación y mantenimiento
1. El producto solamente debe ser abierto por personal especializado con autorización para ello. Antes
de manipular el producto o abrirlo, es obligatorio desconectarlo de la tensión de alimentación, para
evitar toda posibilidad de choque eléctrico.
2. El ajuste, el cambio de partes, el mantenimiento y la reparación deberán ser efectuadas solamente
por electricistas autorizados por Rohde & Schwarz. Si se reponen partes con importancia para los
aspectos de seguridad (p. ej. el enchufe, los transformadores o los fusibles), solamente podrán ser
sustituidos por partes originales. Después de cada cambio de partes relevantes para la seguridad
deberá realizarse un control de seguridad (control a primera vista, control del conductor de
protección, medición de resistencia de aislamiento, medición de la corriente de fuga, control de
funcionamiento). Con esto queda garantizada la seguridad del producto.
Baterías y acumuladores o celdas
Si no se siguen (o se siguen de modo insuficiente) las indicaciones en cuanto a las baterías y
acumuladores o celdas, pueden producirse explosiones, incendios y/o lesiones graves con posible
consecuencia de muerte. El manejo de baterías y acumuladores con electrolitos alcalinos (p. ej. celdas de
litio) debe seguir el estándar EN 62133.
1. No deben desmontarse, abrirse ni triturarse las celdas.
2. Las celdas o baterías no deben someterse a calor ni fuego. Debe evitarse el almacenamiento a la luz
directa del sol. Las celdas y baterías deben mantenerse limpias y secas. Limpiar las conexiones
sucias con un paño seco y limpio.
3. Las celdas o baterías no deben cortocircuitarse. Es peligroso almacenar las celdas o baterías en
estuches o cajones en cuyo interior puedan cortocircuitarse por contacto recíproco o por contacto con
otros materiales conductores. No deben extraerse las celdas o baterías de sus embalajes originales
hasta el momento en que vayan a utilizarse.
4. Las celdas o baterías no deben someterse a impactos mecánicos fuertes indebidos.
5. En caso de falta de estanqueidad de una celda, el líquido vertido no debe entrar en contacto con la
piel ni los ojos. Si se produce contacto, lavar con agua abundante la zona afectada y avisar a un
médico.
6. En caso de cambio o recarga inadecuados, las celdas o baterías que contienen electrolitos alcalinos
(p. ej. las celdas de litio) pueden explotar. Para garantizar la seguridad del producto, las celdas o
baterías solo deben ser sustituidas por el tipo Rohde & Schwarz correspondiente (ver lista de
recambios).
7. Las baterías y celdas deben reciclarse y no deben tirarse a la basura doméstica. Las baterías o
acumuladores que contienen plomo, mercurio o cadmio deben tratarse como residuos especiales.
Respete en esta relación las normas nacionales de eliminación y reciclaje.
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Instrucciones de seguridad elementales
8. En caso de devolver baterías de litio a las filiales de Rohde & Schwarz, debe cumplirse las
normativas sobre los modos de transporte (IATA-DGR, código IMDG, ADR, RID).
Transporte
1. El producto puede tener un peso elevado. Por eso es necesario desplazarlo o transportarlo con
precaución y, si es necesario, usando un sistema de elevación adecuado (p. ej. una carretilla
elevadora), a fin de evitar lesiones en la espalda u otros daños personales.
2. Las asas instaladas en los productos sirven solamente de ayuda para el transporte del producto por
personas. Por eso no está permitido utilizar las asas para la sujeción en o sobre medios de transporte
como p. ej. grúas, carretillas elevadoras de horquilla, carros etc. Es responsabilidad suya fijar los
productos de manera segura a los medios de transporte o elevación. Para evitar daños personales o
daños en el producto, siga las instrucciones de seguridad del fabricante del medio de transporte o
elevación utilizado.
3. Si se utiliza el producto dentro de un vehículo, recae de manera exclusiva en el conductor la
responsabilidad de conducir el vehículo de manera segura y adecuada. El fabricante no asumirá
ninguna responsabilidad por accidentes o colisiones. No utilice nunca el producto dentro de un
vehículo en movimiento si esto pudiera distraer al conductor. Asegure el producto dentro del vehículo
debidamente para evitar, en caso de un accidente, lesiones u otra clase de daños.
Eliminación/protección del medio ambiente
1. Los dispositivos marcados contienen una batería o un acumulador que no se debe desechar con los
residuos domésticos sin clasificar, sino que debe ser recogido por separado. La eliminación se debe
efectuar exclusivamente a través de un punto de recogida apropiado o del servicio de atención al
cliente de Rohde & Schwarz.
2. Los dispositivos eléctricos usados no se deben desechar con los residuos domésticos sin clasificar,
sino que deben ser recogidos por separado.
Rohde & Schwarz GmbH & Co.KG ha elaborado un concepto de eliminación de residuos y asume
plenamente los deberes de recogida y eliminación para los fabricantes dentro de la UE. Para
desechar el producto de manera respetuosa con el medio ambiente, diríjase a su servicio de atención
al cliente de Rohde & Schwarz.
3. Si se trabaja de manera mecánica y/o térmica cualquier producto o componente más allá del
funcionamiento previsto, pueden liberarse sustancias peligrosas (polvos con contenido de metales
pesados como p. ej. plomo, berilio o níquel). Por eso el producto solo debe ser desmontado por
personal especializado con formación adecuada. Un desmontaje inadecuado puede ocasionar daños
para la salud. Se deben tener en cuenta las directivas nacionales referentes a la eliminación de
residuos.
4. En caso de que durante el trato del producto se formen sustancias peligrosas o combustibles que
deban tratarse como residuos especiales (p. ej. refrigerantes o aceites de motor con intervalos de
cambio definidos), deben tenerse en cuenta las indicaciones de seguridad del fabricante de dichas
sustancias y las normas regionales de eliminación de residuos. Tenga en cuenta también en caso
necesario las indicaciones de seguridad especiales contenidas en la documentación del producto. La
eliminación incorrecta de sustancias peligrosas o combustibles puede causar daños a la salud o
daños al medio ambiente.
Se puede encontrar más información sobre la protección del medio ambiente en la página web de
Rohde & Schwarz.
1171.0000.42 - 09
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Customer Support
Technical support – where and when you need it
For quick, expert help with any Rohde & Schwarz equipment, contact one of our Customer Support
Centers. A team of highly qualified engineers provides telephone support and will work with you to find a
solution to your query on any aspect of the operation, programming or applications of Rohde & Schwarz
equipment.
Up-to-date information and upgrades
To keep your instrument up-to-date and to be informed about new application notes related to your
instrument, please send an e-mail to the Customer Support Center stating your instrument and your wish.
We will take care that you will get the right information.
Europe, Africa, Middle East
Phone +49 89 4129 12345
customersupport@rohde-schwarz.com
North America
Phone 1-888-TEST-RSA (1-888-837-8772)
customer.support@rsa.rohde-schwarz.com
Latin America
Phone +1-410-910-7988
customersupport.la@rohde-schwarz.com
Asia/Pacific
Phone +65 65 13 04 88
customersupport.asia@rohde-schwarz.com
China
Phone +86-800-810-8228 /
+86-400-650-5896
customersupport.china@rohde-schwarz.com
1171.0200.22-06.00
R&S®SMC100A
Contents
Contents
1 Preface.................................................................................................. 13
1.1
Documentation Overview........................................................................................... 13
1.2
Typographical Conventions.......................................................................................14
1.3
Notes on Screenshots................................................................................................ 14
2 Preparing for Use................................................................................. 15
2.1
Front Panel Tour......................................................................................................... 15
2.1.1
Utility Keys.................................................................................................................... 16
2.1.2
Standby LEDs and Standby Key...................................................................................17
2.1.3
Display.......................................................................................................................... 17
2.1.4
Setup Keys....................................................................................................................17
2.1.4.1
Keys for Setting Parameters......................................................................................... 17
2.1.4.2
Display Keys................................................................................................................. 18
2.1.5
Keypad for data entry....................................................................................................19
2.1.6
Rotary Knob and Navigation Keys................................................................................ 20
2.1.7
Front Panel Connectors................................................................................................ 20
2.2
Rear Panel Tour...........................................................................................................21
2.2.1
Description of the Connectors.......................................................................................22
2.3
Putting into Operation................................................................................................ 24
2.3.1
EMI Suppression...........................................................................................................25
2.3.2
Unpacking and Checking the Instrument...................................................................... 25
2.3.3
Placing or Mounting the Instrument.............................................................................. 26
2.3.4
Connecting the Instrument to the AC Supply................................................................ 27
2.3.5
Starting the Instrument..................................................................................................28
2.3.5.1
Standby and Ready state..............................................................................................28
2.3.5.2
Start Display and Booting..............................................................................................28
2.3.5.3
Function Check............................................................................................................. 29
2.3.5.4
Default Settings.............................................................................................................29
2.3.6
Shutting Down the Instrument.......................................................................................30
2.3.7
Power Fuses................................................................................................................. 31
2.4
Connecting External Accessories............................................................................. 31
2.4.1
Connecting USB Devices..............................................................................................31
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Contents
2.5
Linux Operating System.............................................................................................32
2.6
Setting Up a Network (LAN) Connection...................................................................34
2.6.1
Connecting the Instrument to the Network....................................................................34
2.6.2
Assigning the IP Address.............................................................................................. 35
2.6.3
Using Computer Names................................................................................................36
2.7
Remote Access via an External Controller...............................................................37
2.7.1
Using a Web Browser for Remote Access.................................................................... 38
2.7.2
Remote Access via a VNC Client Software.................................................................. 39
3 Getting Started..................................................................................... 45
3.1
Brief Introduction to the Instrument's Concept....................................................... 45
3.2
Application Field of the Instrument...........................................................................47
3.3
Description of Individual Diagram Blocks................................................................ 48
3.4
Example of Setup........................................................................................................ 49
4 Manual Operation.................................................................................54
4.1
Key Features................................................................................................................54
4.2
Display......................................................................................................................... 57
4.2.1
Settings Displayed in the Header Section.....................................................................57
4.2.2
Status Information and Messages.................................................................................58
4.2.2.1
Status Information......................................................................................................... 58
4.2.2.2
Messages......................................................................................................................58
4.2.2.3
Volatile messages......................................................................................................... 58
4.2.2.4
Permanent Messages................................................................................................... 59
4.2.3
Info Window.................................................................................................................. 59
4.2.4
Block Diagram ..............................................................................................................60
4.2.4.1
Function Blocks in the Block Diagram...........................................................................60
4.2.4.2
Signal Flow and Input/Output Symbols in the Block Diagram.......................................61
4.2.5
Structure of the Dialogs.................................................................................................61
4.3
Accessing Dialogs...................................................................................................... 62
4.4
Setting Parameters..................................................................................................... 63
4.4.1
Working with the Cursor................................................................................................64
4.4.2
Selecting a Control Element..........................................................................................64
4.4.3
Switching Parameters On/Off........................................................................................65
4.4.4
Entering a Value............................................................................................................65
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4.4.5
Working with Units ....................................................................................................... 66
4.4.6
Selecting a Value from a List........................................................................................ 67
4.4.7
Terminating Entries with Confirmation.......................................................................... 68
4.4.8
Restoring the Previous Value........................................................................................68
4.5
Editors..........................................................................................................................69
4.5.1
Working with List Editor.................................................................................................69
4.6
How to Use the Help System......................................................................................71
4.7
File Management......................................................................................................... 72
4.7.1
File Select Dialog.......................................................................................................... 73
4.7.2
File Manager................................................................................................................. 74
4.7.2.1
Extensions for User Files.............................................................................................. 75
4.8
Legend of Front-Panel Controls................................................................................ 76
4.8.1
Front Panel Key Emulation........................................................................................... 77
5 Instrument Function............................................................................ 78
5.1
Overview of Instrument Functions............................................................................ 78
5.2
General Instrument Settings...................................................................................... 79
5.2.1
Overview of General Instrument Settings..................................................................... 79
5.2.2
Default Instrument Settings - Preset Key...................................................................... 79
5.2.3
General Configuration of Instrument - Setup Key......................................................... 80
5.2.3.1
Internal Adjustments..................................................................................................... 81
5.2.3.2
Hardware Config........................................................................................................... 82
5.2.3.3
Software / Options.........................................................................................................83
5.2.3.4
Manage License Keys...................................................................................................84
5.2.3.5
NRP-Z Info/Update........................................................................................................86
5.2.3.6
Display Update..............................................................................................................87
5.2.3.7
Selftest.......................................................................................................................... 88
5.2.3.8
Check Front Panel........................................................................................................ 89
5.2.3.9
Shutting Down and Rebooting the Instrument.............................................................. 90
5.2.3.10
Network Settings .......................................................................................................... 91
5.2.3.11
Display/Keyboard Settings............................................................................................ 94
5.2.3.12
Remote Channel Settings............................................................................................. 95
5.2.3.13
Instrument Emulations.................................................................................................. 96
5.2.3.14
Protection...................................................................................................................... 98
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5.2.3.15
Security......................................................................................................................... 99
5.2.3.16
Save/Recall................................................................................................................. 105
5.2.3.17
Factory Preset.............................................................................................................105
5.2.3.18
Help.............................................................................................................................106
5.2.4
Switching to Manual Control - Local Key.................................................................... 106
5.2.5
Generating a Hard Copy of the Display...................................................................... 107
5.2.5.1
Hard Copy Settings..................................................................................................... 107
5.2.5.2
Hardcopy Options....................................................................................................... 108
5.2.6
Messages - Info Key................................................................................................... 110
5.2.7
Help System - Help Key.............................................................................................. 110
5.2.8
Storing and Loading Instrument Data - File Key......................................................... 111
5.2.8.1
Save/Recall Menu....................................................................................................... 112
5.2.8.2
Storing Instrument Settings.........................................................................................112
5.2.8.3
Loading Instrument Settings....................................................................................... 113
5.2.8.4
File Manager............................................................................................................... 115
5.2.8.5
Accessing the File System of the Instrument and Transferring Files from and to the
Instrument................................................................................................................... 117
5.3
RF Block.....................................................................................................................120
5.3.1
Overview of RF Signal................................................................................................ 120
5.3.1.1
RF Output....................................................................................................................120
5.3.1.2
RF Signal Modes and Characteristics.........................................................................121
5.3.2
RF Frequency............................................................................................................. 121
5.3.2.1
RF Frequency vs. RF Output Frequency.................................................................... 122
5.3.2.2
Setting the RF Frequency........................................................................................... 122
5.3.2.3
RF Frequency Dialog.................................................................................................. 123
5.3.2.4
Frequency Settings..................................................................................................... 123
5.3.2.5
User Variation Settings............................................................................................... 124
5.3.3
Phase.......................................................................................................................... 125
5.3.3.1
Phase Settings............................................................................................................ 125
5.3.4
Reference Oscillator....................................................................................................126
5.3.4.1
Reference Oscillator Settings......................................................................................127
5.3.5
RF Level......................................................................................................................128
5.3.5.1
Overview of RF Level..................................................................................................128
5.3.5.2
RF Level Dialog...........................................................................................................129
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5.3.5.3
Power-On/EMF Settings............................................................................................. 133
5.3.5.4
Automatic Level Control - ALC....................................................................................134
5.3.5.5
NRP-Z Level Control................................................................................................... 135
5.3.5.6
User Correction........................................................................................................... 140
5.3.5.7
Reverse Power Protection.......................................................................................... 147
5.3.6
RF Measurement........................................................................................................ 148
5.3.6.1
NRP-Z Power Viewer.................................................................................................. 148
5.3.7
RF Sweep Mode......................................................................................................... 156
5.3.7.1
Overview..................................................................................................................... 156
5.3.7.2
RF Frequency Sweep................................................................................................. 156
5.3.7.3
RF Level Sweep..........................................................................................................164
5.4
Modulation................................................................................................................. 169
5.4.1
Overview of Modulation...............................................................................................169
5.4.1.1
Enabling/Disabling Analog Modulations using the MOD On/Off Key.......................... 170
5.4.1.2
Modulation Sources.................................................................................................... 170
5.4.2
Amplitude Modulation (AM).........................................................................................171
5.4.2.1
Amplitude Modulation Settings....................................................................................171
5.4.3
Frequency Modulation (FM)........................................................................................ 173
5.4.3.1
Frequency Modulation Settings...................................................................................173
5.4.4
Phase Modulation (PhiM)............................................................................................175
5.4.4.1
Phase Modulation Dialog............................................................................................ 175
5.4.5
Pulse Modulation (PM)................................................................................................177
5.4.5.1
Pulse Modulation Settings...........................................................................................178
5.5
Modulation Generator and LF Output..................................................................... 179
5.5.1
Overview of LF Generator...........................................................................................179
5.5.2
LF Output.................................................................................................................... 179
5.5.2.1
LF Output Dialog......................................................................................................... 180
5.5.3
LF Frequency Sweep.................................................................................................. 180
5.5.4
Pulse Generator.......................................................................................................... 186
5.5.4.1
Pulse Generator Settings............................................................................................ 186
6 Remote Control Basics......................................................................190
6.1
Remote Control Interfaces and Protocols.............................................................. 190
6.1.1
VISA Libraries............................................................................................................. 191
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6.1.2
Messages....................................................................................................................191
6.1.3
LAN Interface.............................................................................................................. 192
6.1.3.1
HiSLIP Protocol...........................................................................................................194
6.1.3.2
VXI-11 Protocol........................................................................................................... 194
6.1.3.3
Socket Communication............................................................................................... 194
6.1.3.4
LAN Interface Messages.............................................................................................195
6.1.4
USB Interface..............................................................................................................195
6.1.5
Serial Interface............................................................................................................ 196
6.1.6
GPIB Interface (IEC/IEEE Bus Interface)....................................................................196
6.1.6.1
GPIB Interface Messages........................................................................................... 197
6.1.6.2
GPIB Instrument Address........................................................................................... 198
6.2
Starting a Remote Control Session.........................................................................198
6.2.1
Switching to Remote Control.......................................................................................199
6.2.2
Returning to Manual Operation................................................................................... 200
6.2.3
Examples.................................................................................................................... 200
6.2.3.1
Remote Control over GPIB......................................................................................... 200
6.2.3.2
Remote Control over LAN using VXI-11 Protocol....................................................... 201
6.2.3.3
Remote Control over LAN using Socket Communication........................................... 206
6.3
SCPI Command Structure........................................................................................ 212
6.3.1
Syntax for Common Commands................................................................................. 213
6.3.2
Syntax for Device-Specific Commands.......................................................................213
6.3.2.1
Long and short form.................................................................................................... 213
6.3.2.2
Numeric Suffixes......................................................................................................... 214
6.3.2.3
Optional Mnemonics................................................................................................... 214
6.3.3
SCPI Parameters........................................................................................................ 215
6.3.3.1
Numeric Values...........................................................................................................215
6.3.3.2
Special Numeric Values.............................................................................................. 216
6.3.3.3
Boolean Parameters................................................................................................... 217
6.3.3.4
Text Parameters..........................................................................................................217
6.3.3.5
Character Strings........................................................................................................ 217
6.3.3.6
Block Data...................................................................................................................217
6.3.4
Overview of Syntax Elements..................................................................................... 218
6.3.5
Structure of a Command Line..................................................................................... 219
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6.3.6
Responses to Queries.................................................................................................220
6.4
Command Sequence and Synchronization............................................................ 221
6.4.1
Preventing Overlapping Execution..............................................................................222
6.5
Status Reporting System......................................................................................... 223
6.5.1
Hierarchy of the Status Registers............................................................................... 223
6.5.2
Structure of a SCPI Status Register............................................................................225
6.5.3
Status Byte (STB) and Service Request Enable Register (SRE)................................227
6.5.4
Event Status Register (ESR) and Event Status Enable Register (ESE)..................... 228
6.5.5
Questionable Status Register (STATus:QUEStionable)............................................. 228
6.5.6
Operation Status Register (STATus:OPERation)....................................................... 229
6.5.7
Application of the Status Reporting System................................................................229
6.5.7.1
Service Request..........................................................................................................229
6.5.7.2
Serial Poll.................................................................................................................... 230
6.5.7.3
Query of an instrument status..................................................................................... 230
6.5.7.4
Error Queue................................................................................................................ 230
6.5.8
Reset Values of the Status Reporting System............................................................ 231
6.6
General Programming Recommendations............................................................. 231
7 Remote Control Commands..............................................................233
7.1
Conventions used in SCPI Command Descriptions.............................................. 233
7.2
Common Commands................................................................................................ 233
7.3
Preset Commands.....................................................................................................238
7.4
CALibration Subsystem........................................................................................... 240
7.5
DIAGnostic Subsystem............................................................................................ 242
7.6
DISPlay Subsystem...................................................................................................243
7.7
FORMat Subsystem.................................................................................................. 246
7.8
HCOPy Subsystem....................................................................................................248
7.9
KBOard Subsystem.................................................................................................. 255
7.10
MMEMory Subsystem............................................................................................... 256
7.10.1
File Naming Conventions............................................................................................ 256
7.10.2
Extensions for User Files............................................................................................ 257
7.10.3
Examples.................................................................................................................... 257
7.10.4
Remote Control Commands........................................................................................258
7.11
OUTPut Subsystem...................................................................................................265
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7.12
SENSe, READ and INITiate Subsystems.................................................................268
7.13
SOURce Subsystem..................................................................................................277
7.13.1
SOURce:AM Subsystem.............................................................................................277
7.13.2
SOURce:CORRection Subsystem.............................................................................. 279
7.13.3
SOURce:FM Subsystem............................................................................................. 288
7.13.4
SOURce:FREQuency Subsystem...............................................................................291
7.13.5
SOURce:INPut Subsystem......................................................................................... 298
7.13.6
SOURce:LFOutput Subsystem................................................................................... 299
7.13.7
SOURce:MODulation Subsystem............................................................................... 308
7.13.8
SOURce:PGEN Subsystem........................................................................................ 308
7.13.9
SOURce:PHASe Subsystem...................................................................................... 309
7.13.10
SOURce:PM Subsystem.............................................................................................310
7.13.11
SOURce:POWer Subsystem...................................................................................... 312
7.13.12
SOURce:PULM Subsystem........................................................................................ 323
7.13.13
SOURce:ROSCillator Subsystem............................................................................... 330
7.13.14
SOURce:SWEep Subsystem...................................................................................... 332
7.14
STATus Subsystem.................................................................................................. 343
7.15
SYSTem Subsystem................................................................................................. 347
7.16
TEST Subsystem.......................................................................................................362
7.17
TRIGger Subsystem..................................................................................................363
7.18
UNIT Subsystem........................................................................................................369
8 Maintenance....................................................................................... 370
8.1
Cleaning..................................................................................................................... 370
8.2
Storing and Packing................................................................................................. 371
9 Status Information, Error Messages and Troubleshooting............372
9.1
Status Information.................................................................................................... 372
9.1.1
Status information displayed between the frequency and level fields.........................372
9.1.2
Status information displayed to the left of the Info line................................................374
9.1.3
Status information displayed in the Info line................................................................374
9.2
Error Messages......................................................................................................... 375
9.2.1
Volatile messages....................................................................................................... 375
9.2.2
Permanent messages................................................................................................. 376
9.3
SCPI-Error Messages................................................................................................376
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9.4
Device-Specific Error Messages..............................................................................376
9.5
Resolving Network Connection Failures................................................................ 378
9.6
Obtaining Technical Support................................................................................... 379
Annex.................................................................................................. 380
A Hardware Interfaces...........................................................................380
A.1
GPIB Bus Interface....................................................................................................380
List of Commands..............................................................................382
Index....................................................................................................389
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Preface
Documentation Overview
1 Preface
1.1 Documentation Overview
This section provides an overview of the R&S SMC user documentation. You find it on
the product page at:
http://www.rohde-schwarz.com/product/SMC100A.html > "Downloads"
Quick start guide
Introduces the R&S SMC and describes how to set up and start working with the product. Includes basic operations, typical measurement examples, and general information, e.g. safety instructions, etc. A printed version is delivered with the instrument.
Online help
Offers quick, context-sensitive access to the complete information directly on the
instrument.
Operating manual
Contains the description of all instrument modes and functions. It also provides an
introduction to remote control, a complete description of the remote control commands
with programming examples, and information on maintenance, instrument interfaces
and error messages. Includes the contents of the quick start guide manual.
The online version of the operating manual provides the complete contents for immediate display on the Internet.
Service manual
Describes the performance test for checking the rated specifications, module replacement and repair, firmware update, troubleshooting and fault elimination, and contains
mechanical drawings and spare part lists.
Instrument security procedures manual
Deals with security issues when working with the R&S SMC in secure areas.
Basic safety instructions
Contains safety instructions, operating conditions and further important information.
The printed document is delivered with the instrument.
Data sheet and brochure
The data sheet contains the technical specifications of the R&S SMC. It also lists the
options and their order numbers as well as optional accessories.
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Preface
Notes on Screenshots
The brochure provides an overview of the instrument and deals with the specific characteristics.
Release notes and open source acknowledgment (OSA)
The release notes list new features, improvements and known issues of the current
firmware version, and describe the firmware installation.
The open source acknowledgment document provides verbatim license texts of the
used open source software.
See http://www.rohde-schwarz.com/product/SMC100A.html > "Downloads" > "Firmware"
Application notes, application cards, white papers, etc.
These documents deal with special applications or background information on particular topics, see http://www.rohde-schwarz.com/appnotes.
1.2 Typographical Conventions
The following text markers are used throughout this documentation:
Convention
Description
"Graphical user interface elements"
All names of graphical user interface elements on the screen, such as
dialog boxes, menus, options, buttons, and softkeys are enclosed by
quotation marks.
KEYS
Key names are written in capital letters.
File names, commands,
program code
File names, commands, coding samples and screen output are distinguished by their font.
Input
Input to be entered by the user is displayed in italics.
Links
Links that you can click are displayed in blue font.
"References"
References to other parts of the documentation are enclosed by quotation marks.
1.3 Notes on Screenshots
When describing the functions of the product, we use sample screenshots. These
screenshots are meant to illustrate as much as possible of the provided functions and
possible interdependencies between parameters. The shown values may not represent
realistic test situations.
The screenshots usually show a fully equipped product, that is: with all options installed. Thus, some functions shown in the screenshots may not be available in your particular product configuration.
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Preparing for Use
Front Panel Tour
2 Preparing for Use
The following topics help you to get familiar with the instrument and perform the first
steps:
●
Front Panel Tour
●
Rear Panel Tour
●
Putting into Operation
This section explains the control elements and connectors of the Signal Generator
R&S SMC with the aid of the front and rear views and describes how to put the instrument into operation. It also describes the connection of peripherals such as printer,
keyboard or mouse. Specifications of interfaces can be found in the data sheet.
The Chapter 3, "Getting Started", on page 45 of this manual provides an overview of
the generator functions and introduces the operating concept. Detailed operating
instructions and an overview of menus follow in Chapter 4, "Manual Operation",
on page 54.
For all reference information concerning manual and remote control of the instrument,
refer to the online help system or its printed/printable version. A more detailed description of the hardware connectors and interfaces is also part of the help system.
2.1 Front Panel Tour
The front panel of the R&S SMC consists of the VGA display, some utility keys (left
side) and the hardkey area with connectors and control interfaces (right side). The subsequent sections provide brief explanations on the controls and connectors, the hardkey area and the front panel.
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Figure 2-1: Front panel view
2.1.1 Utility Keys
The keys to the left of the display cause the R&S SMC to return to a definite instrument
state and provide information on the instrument and assistance.
For more information refer to chapter "Instrument Settings".
PRESET
Sets the instrument to a defined state (see Chapter 2.3.5.4, "Default Settings",
on page 29).
LOCAL
Switches from remote control to local (manual) control.
SETUP
Opens the "Setup" dialog for configuring presettings.
For more information, see Chapter 5.2.3, "General Configuration of Instrument - Setup
Key", on page 80.
HELP
Displays context-sensitive help text.
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2.1.2 Standby LEDs and Standby Key
The standby LEDs and the ON/STANDBY key are located in the bottom left corner of
the front panel.
The ON/STANDBY key toggles the instrument between standby and ready state (indicated by the standby LEDs).
The standby LEDs indicate the instrument states as follow:
●
the green LED (left) is on when the instrument is ready for operation,
●
the yellow LED (right) is on in the standby mode.
See also Chapter 2.3.5.1, "Standby and Ready state", on page 28.
2.1.3 Display
The display clearly shows all main settings and signal generator states.
The display is divided into the following sections:
●
●
Frequency and level display with info line
–
Frequency and level settings containing offset.
–
Status messages
–
Brief error messages.
To access an window with detailed information for a message, use the INFO
key.
Block diagram
The block diagram shows the current configuration and the signal flow in the generator with the aid of function blocks containing an on/off switch. Selecting a function block opens a list of associated setting menus. Active menus, info windows
and graphs are displayed on top of the block diagram. The block diagram can be
displayed in the foreground anytime with the DIAGRAM key.
For detailed information, see Chapter 4.2, "Display", on page 57.
2.1.4 Setup Keys
The keys to the right of the display set parameters, select views and control the windows.
2.1.4.1
Keys for Setting Parameters
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These keys provide direct access to the settings in the header of the instrument for fast
setting the RF signal.
For more information refer to chapter "Instrument Functions".
FREQ
Activates frequency entry.
LEVEL
Activates level entry.
INFO
Displays status messages, error messages and warnings.
BACKSPACE
Deletes the character to the left of the cursor.
2.1.4.2
Display Keys
These keys arrange different windows on the display, and turn the RF signal and modulation on and off.
DIAGRAM
Brings the block diagram to the foreground. Active menus are minimized.
ESC
The function of this key depends on the current cursor position.
● Calls the next higher selection level.
● Closes the open window without accepting new entries; the old value or parameter
is retained.
● In dialog boxes that contain a "Cancel" button it activates that button.
● Closes all kinds of dialog boxes, if the edit mode is not active.
● Quits the edit mode, if the edit mode is active.
● Switches between different entry fields of a menu.
● Shifts the entry cursor from the header display to the previously active menu, or to
the previously highlighted block in the block diagram if no menu is active.
MOD ON/OFF
Switches the modulations on and off.
"MOD OFF" is displayed in the info line of the header next to the "Level" field.
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RF ON/OFF
Switches the RF signal on and off.
"RF OFF" is displayed in the header next to the "Frequency" field.
2.1.5 Keypad for data entry
The keys in the data entry keypad are used to enter alphanumeric data and units.
Data entry keys are only enabled while the cursor is placed on a data input field in a
dialog. Their function depends on the data type of the input field.
Keys
Description
0...9/abc
Enters the corresponding numbers (in numeric input fields) or characters (character input
fields).
.
Inserts a decimal point (numeric input fields) or dot (character input fields) at the cursor
position. Multiple decimal points are not allowed.
Unit keys
Selects a unit and thus determine the absolute value, or changes the unit, i.e. trigger a
recalculation without changing the absolute value. The function depends on the time at
which the UNIT key is used during parameter entry (see Chapter 4.4.5, "Working with Units
", on page 66).
For unit-free values, the X1 key is equivalent to ENTER. It confirms the previous entry and
deactivates the input field.
_
Adds a blank in a character input field.
*... #
Enters special characters. Toggles through the available characters if the key is pressed
several times in a row.
A <-> a
Toggles between uppercase and lowercase characters.
A, B, C, D,
E, F
Enters hexadecimal values. The letters assigned to the keys are automatically active when
an entry field with a hexadecimal value is active.
ENTER
Pressing the rotary knob has the same effect.
●
●
●
●
●
●
Concludes the entry of dimensionless entries. For other entries, this key can be
used instead of the default unit key. The new value is accepted.
Confirms ("OK") and closes open input windows.
In a dialog box, selects the default or focused button.
In a dialog box, activates the edit mode for the focused area, if available.
In a dialog box, activates or deactivates the selected option of the focused area, if
the edit mode is active.
Calls the next menu level.
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2.1.6 Rotary Knob and Navigation Keys
The rotary knob and the arrow keys are alternative control elements for data variation
and navigation in the graphical user interface.
ROTARY KNOB
The rotary knob has several functions:
● Increases (clockwise direction) or decreases (counter-clockwise direction) numeric
values at a defined step width in editing mode
● Moves the cursor, e.g. to a function block in the block diagram
● Scrolls within lists, tables or tree views
● Acts like the ENTER key, when it is pressed.
● Shifts the selection bar within focused areas (e.g. lists), if the edit mode is activated.
Note: Turning or pressing the rotary knob is equivalent to pressing the UP and DOWN
keys or the ENTER key in the keypad.
NAVIGATION KEYS
The navigation keys consist of 4 arrow keys which are used for navigation, alternatively
to the rotary knob.
UP/ DOWN
KEYS
The up and down arrow keys do the following:
●
●
LEFT/ RIGHT
KEYS
In a numeric edit dialog box, increase or decrease the instrument
parameter.
In a list, table, window or dialog box, scroll vertically.
The left and right arrow keys do the following:
●
●
In an alphanumeric edit dialog box, move the cursor forward and
back.
In a list, table, window or dialog box, scroll horizontally.
2.1.7 Front Panel Connectors
The RF and LF output connectors and a connector for external modulation signals are
located on the front panel.
MOD EXT
Input for external modulation signals.
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LF
Output for internal LF modulation generator signal.
See also data sheet and Chapter 5.5.1, "Overview of LF Generator", on page 179,
Chapter 5.5.2, "LF Output", on page 179.
RF 50 Ohm
Output for RF signal.
NOTICE! Maximum Input Levels. Do not overload the RF output.
The instrument is equipped with a reverse power protection that prevents the RF output against back feed, see Chapter 5.3.5.7, "Reverse Power Protection", on page 147.
Nevertheless, the maximum permisssible reverse power is specified in the data sheet.
The RF signal is output via an N female connector.
NOTICE! Risk of RF connector and cable damage. Excessive tightening of the connectors can damage the cables and connectors. Too weak tightening leads to inaccurate
results.
Always use an appropriate torque wrench suitable for this type of connector and apply
the torque specified in the application note 1MA99.
The application notes are available on the Internet and provide additional information
on care and handling of RF connectors.
Rohde & Schwarz offers appropriate torque wrenches for various connectors. For
ordering information see the R&S SMC data sheet or product brochure.
2.2 Rear Panel Tour
This section gives an overview of connectors on the rear panel of the instrument. Each
connector is briefly described and a reference is given to the chapters containing
detailed information. For technical data of the connectors refer to the data sheet.
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Figure 2-2: Rear panel view
2.2.1 Description of the Connectors
AC SUPPLY AND POWER SWITCH
When the R&S SMC is connected to the AC supply, it automatically sets itself to the
correct range for the applied voltage (range: see type label). There is no need to set
the voltage manually or change fuses.
The power switch can be set to two positions:
● 0
The instrument is disconnected from the mains.
● I
The instrument is power-supplied. It is either ready for operation (STANDBY) or in
operating mode, depending on the position of the ON/STANDBY switch on the
instrument front.
See also data sheet and Chapter 2.3.4, "Connecting the Instrument to the AC Supply",
on page 27.
FUSES
The R&S SMC is fully fused by two fuses IEC60127-T3.15H/250 V.
The fuses are accommodated in the fuse holders next to the power connector. Use
only fuses of the mentioned type.
CAUTION! Danger of shock hazard!. Before replacing the fuses, disconnect the power
cord from the R&S SMC.
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IEC 625/IEEE 488
IEC-bus (IEEE 488) interface for remote control of the instrument.
See also Chapter A.1, "GPIB Bus Interface", on page 380 and Chapter 6.1.6, "GPIB
Interface (IEC/IEEE Bus Interface)", on page 196.
Note: In order to avoid electromagnetic interference (EMI) caused by open lines,
always terminate any connected IEC-bus cable with an instrument or a controller.
PULSE VIDEO
Output of internal pulse generator signal or external pulse signal fed in via the PULSE
EXT connector (video signal).
See alsoChapter 5.4.5, "Pulse Modulation (PM)", on page 177 .
PULSE EXT / INST TRIG
● PULSE EXT
Input of external pulse signal or input of external trigger/gate signal for internal
pulse generator.
See also Chapter 5.4.5, "Pulse Modulation (PM)", on page 177.
● INST TRIG
Input for external trigger for sweeps.
See also Chapter 5.3.7.1, "Overview", on page 156.
REF OUT
Output of internal reference signal.
See also Chapter 5.3.4, "Reference Oscillator", on page 126.
REF IN
Input for external reference signal.
See also Chapter 5.3.4, "Reference Oscillator", on page 126.
LAN CONNECTOR
Ethernet interface
● For integrating signal generators in a network
● Remote control of signal generator
● Remote access to the signal generator
● Firmware update
See also:
● Chapter 2.6, "Setting Up a Network (LAN) Connection", on page 34
● Chapter 6.1.3, "LAN Interface", on page 192
OCXO
Oven-controlled reference oscillator (option R&S SMC-B1)
The OCXO generates a very precise 10 MHz reference signal. It needs some minutes
of warm-up time to reach its nominal frequency.
Refer also to the data sheet for detailed information.
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Putting into Operation
USB CONNECTORS TYPE A
USB (universal serial bus) interfaces of type A (host USB).
●
●
●
Connection of peripherals such as mouse, keyboard, etc.
Connection of memory stick for file transmission
Firmware update
See also Chapter 2.4.1, "Connecting USB Devices", on page 31.
USB IN
USB (universal serial bus) interface of type B (device USB).
This interface can be used for remote control of the instrument.
2.3 Putting into Operation
This section describes the basic steps to be taken when setting up the R&S SMC for
the first time.
Risk of injury and instrument damage
The instrument must be used in an appropriate manner to prevent electric shock, fire,
personal injury, or damage.
●
Do not open the instrument casing.
●
Read and observe the "Basic Safety Instructions" delivered as a printed brochure
with the instrument.
In addition, read and observe the safety instructions in the following sections.
Notice that the data sheet may specify additional operating conditions.
Risk of instrument damage
Note that the general safety instructions also contain information on operating conditions that prevent damage to the instrument. The instrument's data sheet can contain
additional operating conditions.
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Putting into Operation
Risk of electrostatic discharge (ESD)
Electrostatic discharge (ESD) can damage the electronic components of the instrument
and the device under test (DUT). ESD is most likely to occur when you connect or disconnect a DUT or test fixture to the instrument's test ports. To prevent ESD, use a wrist
strap and cord and connect yourself to the ground, or use a conductive floor mat and
heel strap combination.
For details, refer to the basic safety instructions delivered as a printed brochure with
the instrument.
Risk of instrument damage during operation
An unsuitable operating site or test setup can damage the instrument and connected
devices. Ensure the following operating conditions before you switch on the instrument:
●
All fan openings are unobstructed and the airflow perforations are unimpeded. The
minimum distance from the wall is 10 cm.
●
The instrument is dry and shows no sign of condensation.
●
The instrument is positioned as described in the following sections.
●
The ambient temperature does not exceed the range specified in the data sheet.
●
Signal levels at the input connectors are all within the specified ranges.
●
Signal outputs are correctly connected and are not overloaded.
2.3.1 EMI Suppression
Electromagnetic interference (EMI) may affect the measurement results.
To suppress generated Electromagnetic Interference (EMI),
●
Use suitable shielded cables of high quality. For example use double-shielded RF
and LAN cables.
Note: USB cables are of varying and often poor quality. Therefore, check the quality of each individual USB cable as described in the service manual.
●
Always terminate open cable ends.
●
Note the EMC classification in the data sheet
2.3.2 Unpacking and Checking the Instrument
To remove the instrument from its packaging and check the equipment for completeness, proceed as follows:
1. Pull off the polyethylene protection pads from the instrument's rear feet.
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Putting into Operation
2. Carefully remove the pads from the instrument handles at the front.
3. Pull off the corrugated cardboard cover that protects the rear of the instrument.
4. Carefully unthread the corrugated cardboard cover at the front that protects the
instrument handles and remove it.
5. Check the equipment for completeness using the delivery note and the accessory
lists for the various items.
6. Check the instrument for any damage. If there is damage, immediately contact the
carrier who delivered the instrument. Make sure not to discard the box and packing
material.
Packing material
Retain the original packing material. If the instrument needs to be transported or shipped at a later date, you can use the material to protect the control elements and connectors.
2.3.3 Placing or Mounting the Instrument
The R&S SMC is designed for use under laboratory conditions, either on a bench top
or in a rack using a rack adapter kit (order number see data sheet).
Bench Top Operation
If the R&S SMC is operated on a bench top, the surface should be flat. The instrument
can be used in horizontal position, standing on its feet, or with the support feet on the
bottom extended.
Risk of injury if feet are folded out
The feet may fold in if they are not folded out completely or if the instrument is shifted.
This may cause damage or injury.
●
Fold the feet completely in or completely out to ensure stability of the instrument.
Never shift the instrument when the feet are folded out.
●
When the feet are folded out, do not work under the instrument or place anything
underneath.
●
The feet can break if they are overloaded. The overall load on the folded-out feet
must not exceed 500 N.
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Putting into Operation
Risk of injury and instrument damage if stacking instruments
A stack of instruments may tilt over and cause injury. Furthermore, the instruments at
the bottom of the stack may be damaged due to the load imposed by the instruments
on top.
Observe the following instructions when stacking instruments:
●
Never stack more than three instruments with the same dimensions (width and
length). If you need to stack more than three instruments, install them in a rack.
●
The overall load imposed on the lowest instrument must not exceed 500 N.
●
All instruments should have the same dimensions (width and length).
If you need to stack smaller instruments on the top, the overall load imposed on the
lowest instrument must not exceed 250 N.
●
If the instruments have foldable feet, fold them in completely.
Rackmounting
The R&S SMC can be installed in a rack using a rack adapter kit (Order No. see data
sheet). The installation instructions are part of the adapter kit.
Risk of instrument damage in a rack
An insufficient airflow can cause the instrument to overheat, which may disturb the
operation and even cause damage.
Make sure that all fan openings are unobstructed, that the airflow perforations are
unimpeded, and that the minimum distance from the wall is 10 cm.
2.3.4 Connecting the Instrument to the AC Supply
The R&S SMC is automatically adapted to the AC voltage supplied. There is no need
to set the voltage manually or change fuses. The AC SUPPLY AND POWER SWITCH
is at the rear of the unit.
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Putting into Operation
► Connect the instrument to the AC power source using the AC power cable delivered with the instrument.
Note: The instrument is in compliance with safety class EN61010-1.
Connect the instrument only to a socket with earthing contact.
2.3.5 Starting the Instrument
Switching off the AC power
You can leave the AC power on permanently to preserve your last instrument settings.
Switching off is required only if the instrument must be completely disconnected from
all power supplies.
Starting up instruments with power switch
1. Connect the instrument to the AC supply.
2. To turn the power on, press the main power switch to position I (On).
After power-up, the instrument is in standby or ready state, depending on the state
of the ON/STANDBY key at the front panel of the instrument when the instrument
was switched off for the last time.
3. In case the instrument is in standby mode, i.e. the yellow LED is on, press the ON/
STANDBY key to switch the instrument to ready state.
2.3.5.1
Standby and Ready state
The ON/STANDBY key is located in the bottom left corner of the front panel.
Switching between standby and ready state
► Press the ON/STANDBY key briefly to switch the instrument from the standby to
ready state or vice versa.
In ready state, the left, green LED is on. The instrument is ready for operation. All
modules are power-supplied and the R&S SMC initiates its startup procedure.
In standby state, the right, yellow LED is on. The standby power only supplies the
power switch circuits and the oven-controlled crystal oscillator to keep it at its operating temperature. In this state it is safe to switch off the AC power and disconnect
the instrument from the power supply.
2.3.5.2
Start Display and Booting
The instrument boots the operating system, starts the instrument firmware and automatically performs a selftest. If the previous session was terminated regularly, the
instrument uses the last setup with the relevant instrument settings.
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Putting into Operation
Once the startup procedure has been terminated, the block diagram opened in the previous session is displayed and the instrument is ready for operation.
Use the PRESET key to return the instrument to its definite reset/preset state, if the
current setup is not anymore relevant.
To customize the start settings, use the "File" dialog.
Rebooting the instrument
Press the STANDBY key for approx. 5 s. to reboot the instrument, if the software stops
unexpectedly.
2.3.5.3
Function Check
The signal generator automatically monitors the main functions when the instrument is
switched on and continuously during operation.
A detected fault is indicated by a "ERROR" message displayed in the info line together
with a brief error description. For in-depth identification of the error, press the INFO
key. In response, a description of the error(s) is displayed.
For more information, refer to Chapter 9, "Status Information, Error Messages and
Troubleshooting", on page 372.
Additionaly to the automatic monitoring, the R&S SMC offers the following capabilities
to ensure correct functioning:
2.3.5.4
●
Internal Adjustments
Press the SETUP key and select "System > Internal Adjustments" to access the
dialog for preforming and configuring of the adjustments settings. A maximum level
accuracy can be obtained, for instance.
●
Selftest
A selftest is provided for service purposes.
Default Settings
When the instrument is switched on, it is not the preset state that is active, but rather
the instrument state that was set before the instrument was switched off. It is also recomended that you use the PRESET key to return the instrument to its defined preset
state every time a new configuration is required or the current setup is not anymore relevant.
The R&S SMC offers a two-stage preset concept:
●
Preset the instrument to a predefined state
The PRESET key calls up a defined instrument setup. All parameters and switching states are preset (also those of inactive operating modes). The default instrument settings provide a reproducible initial basis for all other settings. However,
functions that concern the integration of the instrument into a measurement setup
are not changed, e.g. GPIB bus address or reference oscillator source settings.
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Putting into Operation
●
Preset the instrument to its factory settings
The instrument can also be forced to load its default factory settings. To access the
corresponding dialog box, press the SETUP key and select the "Factory Preset".
For more information and an overview of the settings affected by the factory preset
function, see Chapter 5.2.3.17, "Factory Preset", on page 105.
Overview of the Most Important Preset States
The following list gives an overview of the presets for the most important generator settings. The other presets can be found in the preset tables of the individual menus and
the information accompanying the remote commands.
●
"RF frequency" = 1 GHz
●
"RF level" RF output switched off
●
"Offsets" = 0
●
"Modulations State" = Off
●
Uninterrupted level settings are switched off
"Level Attenuator Mode" = AUTO
●
Internal level control "Level ALC" = AUTO
●
User correction "Level Ucor" = OFF
●
"LF output State" = Off
●
"Sweep State" = Off
Settings that are not affected by the PRESET key
●
Reference frequency settings ("Ref Oscillator" menu)
●
Power on settings ("Level/EMF" menu)
●
Network settings ("Setup" menu)
●
GPIB address ("Setup" menu)
●
*IDN? Identification and emulation ("Setup" menu)
●
Password and settings protected by passwords ("Setup" menu)
●
Start/Stop Display Update ("Setup" menu)
●
Display and keyboard settings ("Setup" menu)
User-defined instrument states can be stored and called up in the "File" dialog.
2.3.6 Shutting Down the Instrument
To shut down the R&S SMC, proceed as described below.
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Connecting External Accessories
Risk of losing data
If you switch off the running instrument using the rear panel switch or by disconnecting
the power cord, the instrument loses its current settings. Furthermore, program data
may be lost.
Press the ON/STANDBY key first to shut down the application properly.
1. Press the ON/STANDBY key to save the current setup, shut down the operating
system and set the instrument to standby state.
The yellow LED must be on.
2. To switch off the power, press the main power switch to position 0 (Off).
None of the front-panel LEDs should be on.
2.3.7 Power Fuses
The R&S SMC is fully fused by two fuses IEC60127-T3.15H/250 V.
The fuses are accommodated in the fuse holders next to the power connector. Use
only fuses of the mentioned type.
Shock hazard
Before replacing a fuse, make sure that the instrument is switched off and disconnected from all power supplies. Always use fuses supplied by Rohde & Schwarz as spare
parts, or fuses of the same type and rating.
2.4 Connecting External Accessories
The equivalent USB ports on the front and/or rear panel of the R&S SMC can be used
to connect a variety of accessories.
In addition the instrument provides interfaces for network integration (see Chapter 2.6,
"Setting Up a Network (LAN) Connection", on page 34).
2.4.1 Connecting USB Devices
Via the USB ports, you can connect external devices directly to the R&S SMC. If you
need more interfaces, you just use an USB hub.
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Linux Operating System
The following list shows various USB devices that can be useful:
●
Memory stick for easy transfer of data to/from a computer (for example firmware
updates).
●
CD-ROM drives for easy installation of firmware applications.
●
Keyboard or mouse to simplify the entry of data, comments, file names, etc.
●
Power sensors, for example of the NRPxS(N) Power Sensors family.
Installing USB devices is easy under Linux, because all USB devices are plug&play.
After a device is connected to the USB interface, the operating system automatically
searches for a suitable device driver.
If Linux does not find a suitable driver, it will prompt you to specify a directory that contains the driver software. If the driver software is on a CD, connect a USB CD-ROM
drive to the instrument before proceeding.
When a USB device is subsequently disconnected from the R&S SMC, the operating
system immediately detects the change in hardware configuration and deactivates the
corresponding driver.
All USB devices can be connected to or disconnected from the instrument during operation.
Connecting a memory stick or CD-ROM drive
If installation of a memory stick or CD-ROM drive is successful, the operating system
informs you that the device is ready to use. The device is made available as a new
drive (/usb). The name of the drive is manufacturer-dependent.
Connecting a keyboard
The keyboard is detected automatically when it is connected. The default keyboard layout is English – US.
Use the "Setup > Keyboard Settings" dialog to configure the keyboard properties.
Connecting a mouse
The mouse is detected automatically when it is connected.
2.5 Linux Operating System
The instrument uses an embedded Linux operating system. To make sure that the
instrument software works properly, certain rules must be adhered to concerning the
operating system.
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Linux Operating System
Risk of causing instrument unusability
The instrument is equipped with the Linux operating system. Additional software can
therefore be installed on the instrument. The use and installation of additional software
may impair instrument function. Thus, run only programs that Rohde & Schwarz has
tested for compatibility with the instrument software.
The drivers and programs used on the instrument under Linux have been adapted to
the instrument. Existing instrument software must always be modified using only
update software released by Rohde & Schwarz.
The configuration of the operating system is optimally adapted to signal generator
functions in the factory. Changes in the system setup are only required when peripherals like keyboard are installed or if the network configuration does not comply with the
default settings (see Chapter 2.6.1, "Connecting the Instrument to the Network",
on page 34). After the R&S SMC is started, the operating system boots and the
instrument firmware is started automatically.
Accessing Operating System
No access to the operating system is required for normal operation.
All necessary system settings can be made in the "Setup" dialog.
The R&S SMC provides an internal flash memory, it does not contain a disk drive. The
flash memory holds the operating system, the firmware and the stored data. Data
transfer is possible via a memory stick connected to a USB interface. The memory
stick and the flash memory are accessed via the "File Manager".
Accessing the File System
The instrument also supports two standard methods to access the file system form a
remote client:
●
FTP (file transfer protocol)
●
File sharing according to the SAMBA/SMB (server message block) protocol.
Both methods allow the access to the folder /var/user/share.
Default password
The FTP and SAMBA/SMB file access use the user "instrument" with the default password "instrument".
It is highly recommenced that you change this password in the Chapter 5.2.3.15,
"Security", on page 99 dialog before connecting the instrument to the network!
Refer also to Application Note 1GP72 "Connectivity of Signal Generators", provided on
the Rohde & Schwarz website, at http://www.rohde-schwarz.com/appnotes.
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Setting Up a Network (LAN) Connection
Screen saver
A screen saver can be activated in the R&S SMC. When active, the display is shut off
when no entries via front panel, external mouse or external keyboard are made for a
period of time. The screen saver prolongs the life time of the display.
Use the "Setup > Display Settings" dialog to switch on or off the screen saver and to
adjust the screen saver settings.
2.6 Setting Up a Network (LAN) Connection
The R&S SMC is equipped with a network interface and can be connected to an Ethernet LAN (local area network). Provided the appropriate rights have been assigned by
the network administrator and the Linux firewall configuration is adapted accordingly,
the interface can be used, for example:
●
To transfer data between a controller and the instrument, e.g. in order to run a
remote control program.
See Chapter 6, "Remote Control Basics", on page 190.
●
To access or control the measurement from a remote computer using the R&S
VISA or Ultr@VNC programs (or similar tools, like another VNC client or any Web
browser supporting Java)
●
To transfer data from a remote computer and back, e.g. using network folders
This section describes how to configure the LAN interface. It includes the following topics:
●
Chapter 2.6.1, "Connecting the Instrument to the Network", on page 34
●
Chapter 2.6.2, "Assigning the IP Address", on page 35
Accessing Operating System
No access to the operating system is required for normal operation.
All necessary system settings can be made in the "Setup" dialog.
2.6.1 Connecting the Instrument to the Network
There are two methods to establish a LAN connection to the instrument:
●
A non-dedicated network (Ethernet) connection from the instrument to an existing
network
●
A dedicated network connection (Point-to-point connection) between the instrument and a single computer
In both cases, an IP address has to be assigned to the instrument and the computer,
which is usually accomplished automatically. See also Chapter 2.6.2, "Assigning the IP
Address", on page 35.
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Setting Up a Network (LAN) Connection
To set up a network (LAN) connection
Risk of network failure
Before connecting the instrument to the network or configuring the network, consult
your network administrator. Errors may affect the entire network.
► Connect the instrument to the network or to a single PC.
If the instrument is connected to the LAN, the operating system automatically
detects the network connection and activates the required drivers.
By default, the instrument is configured to use dynamic TCP/IP configuration and
obtain all address information automatically.
The network card can be operated with a 10/100 Mbps Ethernet IEEE 802.3u interface.
Risk of network connection failure
Network cables and cable connectors of poor quality may cause network connection
failures.
If the network connection to the instrument fails, check the network infrastructure and
contact your network administrator.
For details, see section "Status Information, Error Messages and Troubleshooting".
2.6.2 Assigning the IP Address
Depending on the network capacities, the TCP/IP address information for the instrument can be obtained in different ways.
●
If the network supports dynamic TCP/IP configuration using the Dynamic Host
Configuration Protocol (DHCP), all address information can be assigned automatically.
●
If the network does not support DHCP, the instrument tries to obtain the IP address
via Zeroconf (APIPA) protocol. If this attempt does not succeed or if the instrument
is set to use alternate TCP/IP configuration, the addresses must be set manually.
By default, the instrument is configured to use dynamic TCP/IP configuration and
obtain all address information automatically. This means that it is safe to establish a
physical connection to the LAN without any previous instrument configuration.
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Setting Up a Network (LAN) Connection
Risk of network errors!
Connection errors can affect the entire network.
If your network does not support DHCP, or if you choose to disable dynamic TCP/IP
configuration, you must assign valid address information before connecting the instrument to the LAN.
Contact your network administrator to obtain a valid IP address.
Assigning the IP address on the instrument
1. Press the SETUP key and select the "Network Settings" dialog.
2. Set the "Address Mode" to Static.
3. Select the "IP Address" and enter the IP address, for example 192.168.0.1..
The IP address consists of four number blocks separated by dots. Every block contains 3 numbers in maximum.
4. Select the "Subnet Mask" and enter the subnet mask, for example 255.255.255.0.
The subnet mask consists of four number blocks separated by dots. Every block
contains 3 numbers in maximum.
Use computer names to identify the instrument
In networks using a DHCP server, it is recommended that you address the instrument
by its unambiguous computer name, see Chapter 2.6.3, "Using Computer Names",
on page 36.
A computer name (hostname) is an unique dedicated identification of the instrument,
that remains permanent as long as it is not explicitly changed. Hence, you can address
an instrument by the same identification (computer name), irrespectively if a network or
a point-to-point connection is used.
To assign the IP address manually on the remote computer
► Obtain the necessary information from your network administrator. If you use more
than one LAN connector, you need separate address information for each connector.
For information on how to perform the configurations, refer to the documentation of
the operating system the remote computer uses.
2.6.3 Using Computer Names
In a LAN that uses a DNS server (Domain Name System server), each PC or instrument connected in the LAN can be accessed via an unambiguous computer name
instead of the IP address. The DNS server translates the host name to the IP address.
This is especially useful when a DHCP server is used, as a new IP address may be
assigned each time the instrument is restarted.
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Remote Access via an External Controller
Each instrument is delivered with an assigned computer name, but this name can be
changed.
The default instrument name is a non-case-sensitive string that follows the syntax
rs<instrument><serial number>.
The serial number can be found on the rear panel of the instrument. It is the third part
of the device ID printed on the bar code sticker:
Querying and changing a computer name
1. Press the "Setup" key and select "Network Settings".
The computer name is displayed under "Hostname".
2. Press the "Setup" key, select "Protection" and enable the "Protection Level 1".
The default password is 123456.
The parameter "Hostname" in the "Network Settings" dialog is now enabled for
configuration.
3. Change the "Hostname".
2.7 Remote Access via an External Controller
The R&S SMC can be remote accessed from a remote computer (external controller)
via a network link. This allows convenient operation of the instrument from the desktop
although the instrument is integrated in a rack somewhere else.
For an overview of the instrument's operating concept and the different ways to control
and operate the instrument, see Chapter 3.1, "Brief Introduction to the Instrument's
Concept", on page 45.
There are different ways to establish a remote access connection to the signal generator but all of them require an established LAN connection between the instrument and
the remote computer. The simplest way to remote access the instrument is to use a
Web browser, such as Windows Internet Explorer or Mozilla Firefox for instance. Alternatively a remote access via a special application can be used.
For example, the free-of-charge program Ultr@VNC for PCs with Linux/Unix or Windows operating system is available for setting up the remote access connection. Using
this application requires additional installation.
See the following table for an overview of the different ways to establish a remote
access connection to the signal generator.
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Table 2-1: Remote access via an external computer
Remote access via
LAN
connection
Any web browser
Installation of the additional
application
on the
instrument
on the remote
computer
required
no
Java Runtime must
be installed and
activated in the
browser settings.
required
required
VNC Viewer
required
for example Windows Internet Explorer or Mozilla Firefox,
see Chapter 2.7.1, "Using a Web Browser for Remote
Access", on page 38
VNC Client
for example Ultr@VNC or other dedicated client software
for PCs with Linux/Unix or Windows operating system
see Chapter 2.7.2, "Remote Access via a VNC Client
Software", on page 39
When the connection is set up with a VNC client software (Ultr@VNC), direct control
on the instrument is possible while remote access is established.
For return to direct operation on the instrument, the connection must be cut. After cutting the connection, it is still enabled and can be established again any time. The connection is disabled only after deactivation of the program.
This section gives an information on how to use the Web browser for remote access,
how to install the applications for remote access and how to establish the connection
between the instrument and an external computer with Windows operating system.
Remote access via an external computer with Linux/Unix operating system is performed accordingly.
Default password
Remote-access and file access require the user "instrument" with default password
"instrument".
Changing the default user and security passwords
It is highly recommended to change the default user and security passwords in the
menu "Setup > Security" before connecting the instrument to the network (see section
Chapter 5.2.3.15, "Security", on page 99).
2.7.1 Using a Web Browser for Remote Access
The instrument can be remote-accessed via any web browser, as for example the Windows Internet Explorer or Mozilla Firefox.
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Remote Access via an External Controller
To remote access the instrument via a web browser:
1. Connect the instrument and the remote computer to a LAN, see Chapter 2.6.1,
"Connecting the Instrument to the Network", on page 34.
2. Instal the Java Runtime Environment JRE on the remote computer.
3. Type the instruments' IP address in the address field of the Web browser on your
PC, e.g. http://10.111.11.1
The "VNC Authentication" screen appears.
4. Enter the password and select "OK".
The default password is "instrument".
After the connection is established, the current signal generator screen with the
block diagram is displayed and the instrument can be remote-accessed from the
remote computer.
2.7.2 Remote Access via a VNC Client Software
A VNC client software is an application which can be used to access and control the
instrument from a remote computer via LAN.
The following description explains how to establish the remote access, represented by
means of the client software Ultr@VNC. The software is included in Linux/Unix operating system, but it is also available as a free-of-charge download on the Internet http://
www.uvnc.com/download/index.html. Thus, it is also available for remote computers
with Windows operating system.
The GUI appearance of Ultr@VNC may vary if you use a later release. Also, similar
programs may deviate in some details, but the basic procedure is the same.
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Remote Access via an External Controller
Risk of Unauthorized Access
If the VNC service is enabled on the instrument, any user in the network who knows
the computer name and password can access it.
Disable the VNC service on the instrument to prevent unauthorized access.
Setting up a VNC connection
1. Connect the instrument and the remote computer to a LAN, see Chapter 2.6.1,
"Connecting the Instrument to the Network", on page 34.
2. Install the Ultr@VNC application and enable it on the instrument.
3. In the ICF firewall, enable communication on the network via Ultr@VNC program.
4. Install the VNC Viewer on the remote computer with Windows operating system,
see "Installing the VNC Viewer on a Windows PC" on page 42.
5. Set up the VNC connection between the instrument and:
a) the remote computer with Linux/Unix operating system, see "Setting up the
VNC connection on the Linux/Unix remote computer" on page 42;
b) the remote computer with Windows operating system, see "Setting up the VNC
connection on the Windows remote computer" on page 43.
Enabled Direct Control
The direct control of the instrument is not disabled and the instrument can be controlled from the front panel and via the remote computer alternately.
Installing the Ultr@VNC application
1. Download the program from the internet and copy it to a directory that can be
accessed.
2. On the instrument, shut down firmware using the ALT+F4 key combination.
3. Double click on the setup file to start the installation.
The setup wizard leads through the installation. This description focus only on the
relevant settings.
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Remote Access via an External Controller
a) Select installation of all components.
b) In the "Additional Task Panel", enable all entries.
A successful installation is indicated by a message.
At the same time a warning is displayed stating that a password must be set.
4. Select "OK".
The "Default Local System Properties" panel opens.
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5. Enter a password with a length of at least five digits.
This password is used on the remote computer to access the instrument. Other
settings may be changed according to the user-specific security requirements.
After the installation the Ultr@VNC program is automatically started together with
the operating system. On mouse over, the IP address of the instrument is indicated.
This IP address and the user-defined password are the prerequisites to enable
remote access on the remote computer. Terminated connection is indicated by
changed icon color.
Installing the VNC Viewer on a Windows PC
1. Download the Ultr@VNC program form internet and follow the installation instructions.
Only the program component VNC Viewer is required.
Note: The VNC Viewer program is included in the download for the installation of
the Ultr@VNC program on the signal generator if "Full installation" was selected in
the "Select Component" panel. In this case, the program ultr@vncviewer.exe
can be copied to the Windows PC.
2. Install VNC Viewer program component on the remote computer.
Setting up the VNC connection on the Linux/Unix remote computer
The VNC program is available per default for Linux/Unix operating systems.
1. Start a Web browser on the remote computer and enter the IP address of the
instrument.
2. Enter the following address:
vnc://<IP-address of the instrument>, e.g. vnc://192.168.1.1.
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A dialog is opened and the password for the remote VNC connection is requested.
3. Enter the password as defined in the "Default Local System Properties" panel of
the Ultr@VNC program and select "Log On".
The connection is established, the instrument is remote accessed and the current
signal generator screen with the block diagram is displayed. The individual functions are operated using the mouse and keyboard.
In contrast to remote access via Remote Desktop, the direct control of the instrument is not disabled and the instrument can be controlled from the front panel and
via the remote computer alternately.
Setting up the VNC connection on the Windows remote computer
1. Start VNC Viewer program component on the PC, select "VNC Server" and enter
IP address of the instrument.
2. To initialize the connection, select "Connect".
A message requesting the password appears.
3. Enter the password as defined in the "Default Local System Properties" panel of
the Ultr@VNC program and select "Log On".
The connection is established, the instrument is remote accessed and the current
signal generator screen with the block diagram is displayed. The individual functions are operated using the mouse and keyboard.
Enabled Direct Control
The direct control of the instrument is not disabled and the instrument can be controlled from the front panel and via the remote computer alternately.
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Remote Access via an External Controller
Terminating VNC Connection
The remote access via VNC connection can be terminated either on the R&S SMC or
on the external PC. Terminating the connection does not disable it. It can be established again any time. See the notice above concerning unauthorized access due to
VNC connection!
1. Terminate the connection on the R&S SMC
a) Press the "Windows" key to access the operating system.
b) Right-click on the VNC icon on the task bar and select "Kill all clients".
2. To terminate the connection on the external Linux/Unix PC, close the internet
browser or close the signal generator window.
3. To terminate the connection on the external Windows PC, close the VNC Viewer
program.
The connection is terminated. The color of the VNC icon in the status bar of the
instrument changes.
A message on the external PC indicates the disconnection.
Disabling Remote Access via Ultr@VNC
The VNC connection can be disabled by removing the program on the instrument or by
deactivating the VNC Server service.
1. Remove the VNC program
a) Press the "Windows" key to access the operating system and open the "Add or
Remove Programs" by selecting "Start > Settings > Control Panel > Add or
Remove Programs".
b) Remove the VNC program.
2. Deactivate the VNC Server service
a) Press the "Windows" key to access the operating system and open the "Services" by selecting "Start > Settings > Control Panel > Services".
b) Deactivate the VNC Server service.
The connection is disabled, the VNC icon disappears from the task bar of the
instrument.
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Getting Started
Brief Introduction to the Instrument's Concept
3 Getting Started
This section helps you to get familiar with the R&S SMC. It provides an introduction to
the general concept of the instrument with a sample of the possible application fields,
and a description of the main blocks in the signal generation flow.
This section also explains the operating concept in general and includes a brief introduction to operation by a step-by-step description of the configuration. The example is
intended to provide a quick overview of the settings provided. No additional equipment
is required.
3.1 Brief Introduction to the Instrument's Concept
The operating concept of the R&S SMC employs the following three ways of instrument control:
●
Manual operation
●
Remote control
●
Remote access
Manual Operation
The R&S SMC can be entirely operated from the front panel. Peripherals such as
mouse or keyboard can be connected but are not essential.
The R&S SMC is equipped with an intuitive user interface. The central element of the
display is the block diagram that shows the signal flow and processing from the left on
the display to most right, i.e. the generated signal can be seen at a glance.
Each block represents a functional unit of the instrument. Thus you always know the
position at which a parameter affects the signal flow. The main settings of a block are
indicated in the block. The interconnection of employed inputs and outputs is also
shown. The user is thus always informed about the connection of inputs and outputs in
the signal flow and where they can be configured. A window is opened for each menu
where parameters can be set. When the window is opened, an entry is made in the
"Winbar" below the display. All open menus are of equal priority (not modal) and can
be accessed any time.
The block diagram in the figure below shows a fully equipped instrument.
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Getting Started
Brief Introduction to the Instrument's Concept
Figure 3-1: Block diagram of a fully equipped R&S SMC
With the rotary knob, you can navigate in the block diagram and the dialogs, and operate the instrument with one hand. The cursor is moved line by line through the block
diagram or dialog. Turning the button clockwise advances the cursor. The selected
block can be activated or deactivated with the TOGGLE key. Active blocks are highlighted by a colored background.
The instrument comprises a comprehensive info and help system. You can access the
context-sensitive help with the HELP (F1) key at any time. The help system indicates
the currently selected parameter and offers additional services such as cross references, index and contents. The content of the help system corresponds to the operating
manual of the instrument.
Warning and conflict messages caused by incorrect operation as well as further information are displayed in the "Info" line. A complete list of existing conflicts is displayed
when the INFO (CTRL+I) key is pressed. Additional information on entries can be
requested from the help system. The history function permits display of all messages.
Assistants simplify the completion of tables. After data entry in the assistant, the table
is modified only after the "Accept" button has been pressed. Pressing the "Accept" button also stores the assistant data.
For an introduction into the manual operating of the instrument, detailed operating
instructions and an overview of menus refer to Chapter 4, "Manual Operation",
on page 54.
For an in-depth description of the dialog boxes and the instrument functions, refer to
section Chapter 5.1, "Overview of Instrument Functions", on page 78.
Remote Control
Remote control is an operation of the instrument by means of remote control commands or programs that automatize repeating settings. The instrument is connected to
a computer running the program.
The R&S SMC supports various remote control connections:
●
Connecting the instrument to a (LAN) network
●
Connecting a PC via the IEC-bus (IEEE 488) interface
●
Remote control via the USB interface
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Getting Started
Application Field of the Instrument
Tip: For remote control over LAN or USB, you can use the R&S VISA (Virtual Instrument Software Architecture) library provided for download at the Rohde & Schwarz
website http://www.rohde-schwarz.com/rsvisa.
This way of operation and the instructions how to set up a connection for remote control are described in the Chapter 6, "Remote Control Basics", on page 190. The
description of the remote control commands is provided in Chapter 7, "Remote Control
Commands", on page 233.
Remote access
Remote access is the operating of the instrument from a remote computer. Both the
R&S SMC and the computer are connected in a LAN.
Remote access in contrast to remote control does not use remote-control commands
but a separate software which is installed on the remote computer. After its start, the
software simulates the user interface of the instrument. The instrument can thus be
operated from the remote computer as on the unit itself. The individual functions are
operated using the mouse and keyboard. Specific instrument functions can be executed using specific key combinations on the keyboard or a front panel key emulation that
can be operated with the mouse.
This way of operation and the instructions how to set up a connection for remote
access are described in Chapter 2.7, "Remote Access via an External Controller",
on page 37.
3.2 Application Field of the Instrument
The Signal Generator R&S SMC is suitable for applications which require sine wave
signals with high spectral purity, i.e. signals with high quality. The internal LF generator
is used as a modulation source and permits generation of analog modulated signals. A
signal can be amplitude (AM), frequency (FM), phase (PhiM) or pulse (PM) modulated.
With its adjustable frequency range from 9 kHz up to 3.2 GHz the generator is especially designed for medium scale RF generation. Various fields of applications are covered, e.g. in lab, service, production and quality assurance.
●
generating modulated signals to check the data taken by a receiver
●
functionality testing of components in production
●
generation of modulated signals which are required in mobile radio
●
signal generation and modulation for EMC measurements of components
●
test equipment for service and maintenance
●
applications in research and apprenticeship, e.g at universities
●
high signal quality
●
internal analog modulation modes: AM, FM, PhiM
●
pulse modulation
●
frequency and level sweep
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Getting Started
Description of Individual Diagram Blocks
●
remote control via USB, LAN and IEC Bus
Note: For faster operation by remote control the instrument can be equipped with
an IEC bus interface (option R&S SMC-K4).
3.3 Description of Individual Diagram Blocks
The signal path of the instrument is configured by installing a frequency option that
comprises all required modules.
One of the following options must be installed.
●
R&S SMC-B101 (up to 1.1 GHz)
●
R&S SMC-B103 (up to 3.2 GHz)
●
R&S SMC-B131 (up to 31,8 GHz)
See data sheet for detailed information.
Up-to-date information is available at R&S SMC homepage on the internet http://
www.rohde-schwarz.com/product/smc100a.html.
Mod Gen block
The internal modulation sources are configured in this block. Also, the "LF frequency
sweep" can be activated here.
An internal LF generator is available as the internal source for the analog modulations
AM, FM and PHiM. The used modulation shape is a sine wave signal.
The internal modulation signals are provided at the LF output at the front of the instrument. The LF output signal and the modulations sources for the analog modulations
AM, FM and PhiM can be selected independently from each other.
A pulse generator provides single and double pulse modulation with selectable pulse
widths and periods. The internal pulse generator signal is provided at the PULSE
VIDEO output at the rear of the instrument.
The R&S SMC offers three different sweep types (frequency sweep, level sweep and
LF sweep) to be activated alternatively. Each type has 6 modes which differ with
respect to the sweep cycle mode (continuous, individual and step-by-step) and triggering mode (automatic, internal and external). In the "Mod Gen" block, the LF sweep is
configured. Frequency and level sweep settings are accessed via the "RF" block.
The status display in the block shows whether LF generator and/or a sweep are active.
The selected internal LF generator and/or noise source are switched on or off with the
TOGGLE ON/OFF key.
Modulation block
The internal and external analog modulations are configured and activated in this
block. The MOD ON/OFF key switches the active modulation(s) on/off.
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Example of Setup
The internal modulation sources are configured in the "Mod Gen" block. External
amplitude, frequency or phase modulation signals can be fed in at the input connector
MOD EXT at the front of the instrument. An external pulse signal is fed in via the BNC
connector PULSE EXT at the rear of the instrument. AC or DC coupling for external
feed is possible.
Available internal and external analog modulation modes are:
● Amplitude modulation (AM)
● Frequency modulation (FM)
● Phase modulation (PhiM)
● Pulse modulation (Pulse)
Note: For modulation modes that can be simultaneously used, refer to the R&S SMC
data sheet.
The status display in the block shows the active modulation(s). Use the TOGGLE
ON/OFF key to switch the active modulation of the block on or off.
RF block
In this block, the RF parameters and frequency/level sweep settings are set.
The active sweep is displayed in the block. The RF ON/OFF key switches the RF signal on and off. When the signal is switched off, the switch before the RF output symbol
is open.
RF settings include:
● Frequency and reference frequency
● Level settings; if required.
● NRP-Z Power Viewer using power sensors
● Frequency and level sweep
The RF 50 OHM output connector at the front of the instrument provides the RF signal.
An external trigger/gate signal for sweeps is input via the INST TRIG connector at the
rear of the instrument
Note: Frequency and level are set fast with the aid of the FREQ and LEVEL keys.
Use the TOGGLE ON/OFF key to switch the RF output on or off.
3.4 Example of Setup
This section provides an example on how to configure the instrument for generating of
an amplitude modulated signal.
Generation of an Amplitude-Modulated Signal
To generate a simple AM-modulated signal, proceed as follow:
1. Activate default (preset) state
Press the PRESET key to set a defined instrument state.
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Example of Setup
2. Select and activate AM modulation
a) Turn the rotary knob and select the "Modulation" block.
b) Press the rotary knob to open the dialog where the modulation can be selected.
The "Amplitude Mod..." menu is the first menu and is highlighted per default.
c) Turn the rotary knob and highlight "Amplitude Mod...".
Press the rotary knob to open the "Amplitude Modulation" dialog.
d) Turn the rotary knob to select parameter "AM Depth", press the rotary knob to
allow editing and enter the preferred AM depth with the aid of the numeric keypad and the unit keys.
e) Finally, select "State" and press the rotary knob to switch on the AM modulation.
f)
Press the DIAGRAM key to display the complete block diagram.
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Example of Setup
To indicate the active state, the "Modulation" block is displayed in blue. The "RF" is
not yet active, which means that no RF signal is output.
3. Set frequency and level and activate RF signal
a) Press the FREQ key to activate the editing mode for frequency entry. The "Frequency" entry field in the header section of the display is highlighted.
Enter the frequency using the numeric keypad and terminate the entry by
pressing a unit key.
b) Press the LEVEL key and enter the level settings in the same way.
c) Press the DIAGRAM key to display the complete block diagram.
d) Turn the rotary knob to select the "RF" block.
Press the RF ON/OFF key to activate the "RF" block.
The AM modulation signal is now present at the RF output.
Generation of an RF Frequency Sweep Signal
In the example, an RF frequency sweep is configured. Proceed as follow:
1. Activate default (preset) state
Press the PRESET key to set a defined instrument state.
2. Configure and activate RF frequency sweep.
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Example of Setup
a) Turn the rotary knob and select the "RF" block.
b) Press the rotary knob to open the dialog where the RF frequency sweep can be
selected.
c) Turn the rotary knob and highlight "RF Frequency Sweep...".
Press the rotary knob to open the "RF Frequency Sweep" dialog.
All sweep parameters are default except for the sweep mode. The default settings are not changed.
d) Turn the rotary knob to select parameter "Mode", press the rotary knob to open
the selection list and select "Single".
e) Press the rotary knob to apply the selection.
For triggering, the "Execute Single Sweep" and "Reset Sweep" buttons are displayed.
f) Finally, select "State" and press the rotary knob to switch on the RF frequency
sweep.
g) Press the DIAGRAM key to display the complete block diagram.
The "RF" is not yet active, which means that no RF signal is output.
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Example of Setup
3. Activate RF signal.
a) Turn the rotary knob to select the "RF" block.
b) Press the RF ON/OFF key to activate the "RF" signal output.
To indicate the active state, the RF block is displayed in blue. An RF signal with the
default frequency and level settings is output, i.e. 1 GHz and -30 dBm.
The sweep is not yet active, it must be triggered in the sweep dialog.
4. Trigger RF frequency sweep
a) Press the WINBAR key to switch to the "RF Frequency Sweep" dialog.
Turn the rotary knob to select the "Execute Single Sweep" button.
Press the rotary knob to trigger (start) the frequency sweep.
A linear single sweep signal is now present at the RF output, starting at 100 MHz.
The sweep is processed in 1 MHz steps with dwell time of 10 ms per step up to the
stop frequency of 500 MHz.
The sweep starts at 100 MHz, stops at 500 MHz in 1 MHz steps is output with a
dwell time of 10 ms per step.
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Manual Operation
Key Features
4 Manual Operation
The R&S SMC can be operated intuitively either via the interactive block diagram or via
a menu tree. All menus are in the form of windows that can be operated in the same
way. Rotary knob, keys and softkeys, or alternatively a mouse, allow direct and therefore convenient access to entries and settings.
The clear-cut display shows the current signal generator state. Numerous help functions support the user in signal configuration.
This section describes the concept of manual operation of the signal generator. This
includes a description of the general structure of a dialog box, working with dialog
boxes and the block diagram and the setting of parameters.
For an in-depth description of the dialog boxes and the instrument functions refer to
section "Instrument Functions".
4.1 Key Features
The manual operating concept of the R&S SMC enables the user to make settings as
intuitively as possible and at the same time gives a permanent overview of characteristics of the generated signal and of the current instrument state. Numerous online help
functions support user settings.
Block diagram
The block diagram is the core of the operating concept.
A graphics display shows the current configuration and the signal flow in the form of a
block diagram. All graphical elements can be accessed for operation. An element is
selected by means of the arrow keys and the associated setting function is called by
pressing Enter. Required menus and graphs are displayed on the block diagram which
is displayed again in the foreground whenever the DIAGRAM (CTRL+D) key is
pressed.
Permanent frequency and level display
The main characteristics of the RF signal, frequency and level, are permanently displayed in the header section of the screen and can be directly set in the display fields
after the FREQ (CTRL+F) or LEVEL (CTRL+L) key is pressed. Status messages for
the output signal are displayed in addition to frequency and level.
Operation via Graphical User Interface
●
Functional blocks
Menus are assigned to the specific function blocks in the block diagram. The function blocks represent elements of signal generation. Function blocks displayed with
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Key Features
a blue frame can be directly switched on and off by means of the TOGGLE
ON/OFF (CTRL+T) key. The menus of the highlighted function blocks can be
called by pressing the ENTER key.
–
Example:
The "Modulation" block contains all menus required for modulation signal configuration.
In this block all modulations can be selected.
●
Signal flow
The signal flow between the function blocks and the employed inputs and outputs
are also shown.
●
Menu tree
The menu tree can be opened and closed with the MENU (CTRL+M) key. The
menu tree is organized in the same way as the directories under Windows. The
function blocks correspond to the first directory level, the menus to subdirectories.
Operation corresponds to the Windows concept
To offer the user a familiar environment, operation is very similar to operation of Windows user interfaces. All menus and tables are made up of known elements, such as
selection lists, check boxes and entry fields.
A blue frame indicates that the selected item is active. In the highlighted element,
entries can be made.
Rotary knob
Operation is possible via front-panel keys, an external keyboard and the mouse. However, most of the settings can be easily made with the rotary knob:
●
Turning the rotary knob shifts the entry focus to the target element.
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Manual Operation
Key Features
●
Pressing the rotary knob activates the selected entry field.
Depending on the parameter, the submenu is called, the numeric value varied, the
list entry selected or the check box activated or deactivated.
●
If a value is entered, the entry is stored by another click on the rotary knob and the
editing mode is exited.
Clear settings with the aid of independent subdialogs
A separate window is opened for each dialog and subdialog. The dialogs can be operated independently of each other, i.e. none of the dialogs requires that settings in other
dialogs be completed before it can be closed. This ensures flexible operation at all
times.
Keys with assigned simple functions
Most keys on the front panel of the R&S SMC directly perform a simple function.
Since a great number of settings can thus be made by a keystroke, operation is easy.
For instance, the CLOSE (ESC) key closes the active menu; with the RF ON/OFF
(CTRL+R) key the RF output signal can be switched on or off.
An exception are keys that call a menu such as the MENU (CTRL+M) key which opens
the complete menu tree of the instrument, the SETUP (CTRL+E) key which opens the
menus for general instrument settings or the FILE (CTRL+S) key which opens the
menu for file management.
Help functions for user support
Numerous help functions support the user in signal configuration.
●
Value ranges
The valid setting range is displayed for each numeric parameter. This requires a
short wait after activation of the entry field. The range is then displayed automatically after a few seconds.
If the entered value is outside the permissible range, the next permissible value is
automatically set and a message is output.
●
Context-sensitive help
Context-sensitive help for each parameter can be called with the HELP or F1 key.
●
Comprehensive online help
Each help page is part of a comprehensive online help function which can be
called by means of an index, a content tree or the "Previous/Next" buttons.
Info line with messages for indication of the current instrument state
A great variety of different messages such as status messages, error messages, warnings or information are displayed in the header field of the screen. With the aid of the
INFO (CTRL+I) key, help pages can be called for most of the messages. They provide
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Display
background information on the message and indicate operating steps that may be
required. All messages are explained in the online help which can be called with the
HELP (F1) key.
4.2 Display
The display shows the current signal generator state and offers graphical elements for
direct operation. It is divided into three sections:
●
The frequency and level display with info line indicates the main output signal
parameters and reports the current state with status, error and warning messages.
●
The block diagram shows the instrument configuration, the signal characteristic as
well as the inputs and outputs used and permits interactive operation via graphics
elements. Active menus and graphs are displayed on top of the block diagram.
●
Winbar with labeled softkeys for menu display.
The block diagram in the figure below shows a fully equipped instrument.
Figure 4-1: Block diagram of a fully equipped R&S SMC
The R&S SMC supports a multi language user interface, that can be set in the "Setup
> Display Settings" dialog, see "GUI Language" on page 94.
4.2.1 Settings Displayed in the Header Section
Frequency/level settings and a few status messages (see Chapter 4.2.2, "Status Information and Messages", on page 58) are displayed in the header field of the screen.
The display may vary depending on the instrument's operating mode:
●
In the sweep mode, the current frequency or level of the output signal is displayed.
The status message "SweepMode" is displayed in the info line.
●
If user correction is active, the status message "UCorr" is displayed in the info line.
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Display
The values displayed in the "Freq" and "Level" fields include a set offset or multiplier
factor.
For more See alos Chapter 5.3.2, "RF Frequency", on page 121 and Chapter 5.3.5.1,
"Overview of RF Level", on page 128.
The frequency and level indication can be enlarged so that it covers the complete display of the R&S SMC by using the DIAGR key. This key toggles between block diagram, magnified frequency and level indication and the display of the active dialog.
This requires the "Summary Screen Toggle" to be enabled.
See also "Toggle Summary Screen" on page 94.
4.2.2 Status Information and Messages
The instrument indicates status information and messages in the header section of the
screen. The messages differ with respect to their importance like errors, warnings or
information and require different treatment.
For additional information refer to the info window (see Chapter 4.2.3, "Info Window",
on page 59).
Refer to Chapter 9, "Status Information, Error Messages and Troubleshooting",
on page 372 for an overview of all status information and messages and corrective
actions.
4.2.2.1
Status Information
The status information gives the user an overview of the main operating states and settings of the instrument. The states are indicated for information only and do not necessitate any action by the user.
Status information is displayed between the frequency and level fields, at the left of the
info line or in the info line itself.
4.2.2.2
Messages
Messages indicate errors in the instrument. They are displayed in the info line in different colors depending on their importance and display duration. Errors (e.g. no calibration data) are displayed in red, information (e.g. file not found) and warnings in black.
Warnings indicate less significant errors (e.g. the instrument operates outside specified
data).
4.2.2.3
Volatile messages
Brief messages report automatic settings in the instrument (e.g. switching off of incompatible types of modulation) or on illegal entries that are not accepted by the instrument
(e.g. range violations). They are displayed in the info line on a yellow background.
They are displayed on top of status information or permanent messages.
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Display
Volatile messages do not normally demand user actions and disappear automatically
after a brief period of time. They are stored in the history, however.
These messages can be read from remote using the commands :SYSTem:ERRor[:
NEXT]? and :SYSTem:ERRor:ALL?.
4.2.2.4
Permanent Messages
Permanent messages are displayed if an error occurs that impairs further instrument
operation, e.g. a hardware fault. The error signalled by a permanent message must be
eliminated before correct instrument operation can be ensured.
The message is displayed until the error is eliminated. It covers the status display in
the info line. After error elimination, the message automatically disappears and is also
recorded in the history.
These messages can be read from remote using the command :SYSTem:SERRor?.
4.2.3 Info Window
A few operating states and the current message are displayed in the info line.
The INFO window with a list of current permanent messages and a detailed description
of each message can be opened with the INFO (CTRL+I) key.
The upper section of the info window contains a list of all current permanent messages
in the order of their occurrence, i.e. the most recent message is displayed first. In the
lower section of the window, additional information on the highlighted message is displayed. A history of all messages that have occurred since instrument switch-on can be
called with the "History" key. The most recent message is displayed first.
The messages are color-coded according to their level. Device-specific messages are
red, info and remote control error are black. The level is also indicated in the "Lev"
column (Err, Sys or Info). Column "SCPI" indicates the SCPI error code.
With the aid of the softkey buttons, error messages can be cleared and a history of all
messages called.
Delete
Clears the highlighted message.
This button is available only if the history of the messages is displayed.
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Display
Delete All
Clears all messages.
This button is available only if the history of the messages is displayed.
History
Calls the list of all messages that have occurred since instrument switch-on. The most
recent messages are displayed at the top of the list. When the button is pressed again,
the list of current messages is displayed.
Remote command:
:SYSTem:ERRor[:NEXT]? on page 349 or :STATus:QUEue[:NEXT]?
on page 346
Each time a SYST:ERR? or STAT:QUE? query is sent, the oldest entry in the error
queue is returned and at the same time cleared in the list.
4.2.4 Block Diagram
The block diagram shows provided options, signal configuration and the currently
selected signal flow of the generator with inputs and outputs used. Signal generation
can be completely operated from the block diagram. The highlighted function block can
be directly switched on and off with the TOGGLE ON/OFF (CTRL+T) key. Pressing the
Enter opens the associated setting menu.
Figure 4-2: Block diagram of the R&S SMC
4.2.4.1
Function Blocks in the Block Diagram
Each block represents a function of signal generation. The function is indicated in the
headline of the block. In the check box, the respective function can be quickly activated/ deactivated with the TOGGLE ON/OFF (CTRL+T) key. After activation, the block
is displayed in blue. Status information is displayed below the check box. It is different
for the different blocks.
Pressing the rotary knob (front panel) or the "Config..." button (mouse) opens the associated setting menu.
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Example: Modulation block
In this block, the modulation signals are set. The status information of the "Modulation"
block indicates the selected modulation.
4.2.4.2
Signal Flow and Input/Output Symbols in the Block Diagram
The input/output symbols in the block diagram show the currently used inputs and outputs of the signal generator. Unused inputs and outputs are not shown. The lines indicate the signal flow.
Symbols and labels refer to the corresponding inputs and outputs on the front and rear
panel of the signal generator. The direction - input or output - is indicated by an arrow.
Example:
The symbols indicate the input for the external pulse signal on the
instrument rear panel.
4.2.5 Structure of the Dialogs
The parameters are set in the menus. Menus are accessed either via the function
blocks in the diagram or by means of the MENU (CTRL+M) key. The menus are displayed on top of the block diagram.
The WINBAR key toggles between the active menus. The REARR key toggles
between the enlarged and normal sized menus.
Working with menus and dialog boxes is described in Chapter 4.3, "Accessing Dialogs", on page 62; the setting of parameters in Chapter 4.4, "Setting Parameters",
on page 63.
The menus are in Windows format. The menus differ in details depending on their
function but they consist of the same main elements. Each menu consists of a menu
header and one or more menu areas with various fields for setting parameters.
The header line contains the name of the menu and the buttons for minimizing and
closing the menu. To operate the buttons, use the mouse or the front key CLOSE
(ESC).
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Accessing Dialogs
Several fields of associated but separately set parameters are organized in menu
areas. A menu area is framed and labelled with the function common to all parameters.
Example: Pulse Generator
Each of the setting fields is assigned a parameter name. The kind of setting varies
depending on the parameter to be set. Some settings can only be made in a specific
configuration. If setting is not permitted with the specific configuration selected, the
respective item is disabled and displayed in gray and the entry or selection field cannot
be accessed.
4.3 Accessing Dialogs
The MENU (CTRL+M) key opens the complete menu tree. Selecting a functional block
and pressing the ENTER key opens the menu associated with this block.
An alternatively way to access a dialog is to use the CLOSE (ESC), DIAGRAM (CTRL
+D) and REARR (CTRL+A) keys on the front panel.
For a quick access to the dialogs, use one of the following alternative methods.
Displaying the block diagram or a dialog in the foreground
► Press the DIAGRAM (CTRL+D) key to move the cursor to the block diagram.
All active menus are minimized.
Enlarging the indication of the header section
► Press the DIAGRAM key twice to enlarge the indication of the header section.
Tip: Use the REARR key to toggle between the enlarged and normal sized dialogs.
Accessing the menu tree
► Press the MENU (CTRL+M) key to open the complete menu tree.
Calling the File or Setup dialog
► Use the SETUP (CTRL+E) key to open the "Menu Tree" or "Setup" dialog, and
(CTRL+S) to open the "File" dialog.
Closing an active menu
► Press the CLOSE key to close an active menu.
Tip: If the cursor is at the highest menu level, you can also use the ESC key to
close the active menu.
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Setting Parameters
Accessing the header area
► Press the FREQ (CTRL+F) and LEVEL (CTRL+L) keys to activate the "Frequency"
or "Level" entry fields in the header area.
Keyboard Shortcuts
Keyboard shortcuts (e.g. "Ctrl + D" for the displaying the block diagram in the foreground) provide direct access to all utility dialogs of the instrument (see Chapter 4.8,
"Legend of Front-Panel Controls", on page 76).
4.4 Setting Parameters
The R&S SMC offers several and sometimes alternative possibilities for setting parameters. Operation is possible from the front panel, with the aid of a mouse and/or from a
PC keyboard.
The examples whitin this description focus on the operation from the front panel.
For more information, refer to:
●
Chapter 4.8, "Legend of Front-Panel Controls", on page 76 for an overview of key
functions and a cross-reference between the front panel keys and the keyboard
shortcuts
●
section "Instrument Functions" for a detailed description of key functions.
Most of the parameters are set in the different menus. The R&S SMC provides alternative ways for accessing the dialogs. Turn the rotary knob and navigate to the corresponding block in the block diagram and press the knob to open the dialog or perform
a mouse click on the "Config..." button.
These menus can only be called with the SETUP (CTRL+E) and (CTRL+S) keys.
Frequency and level are directly set in the header area of the display using the FREQ
and LEVEL keys.
Specific settings can also be made directly in the block diagram, e.g. activating a function block by means of the TOGGLE ON/OFF (CTRL+T) key or switching the RF output on and off with the aid of the RF ON/OFF (CTRL+R) key. Changes affecting the
signal flow are immediately visible in the graphics display.
This section provides an information about the parameter handling that comprises of
the following main steps:
●
Chapter 4.4.1, "Working with the Cursor", on page 64
●
Chapter 4.4.2, "Selecting a Control Element", on page 64
●
Chapter 4.4.3, "Switching Parameters On/Off", on page 65
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●
Chapter 4.4.4, "Entering a Value", on page 65
●
Chapter 4.4.5, "Working with Units ", on page 66
●
Chapter 4.4.6, "Selecting a Value from a List", on page 67
●
Chapter 4.4.7, "Terminating Entries with Confirmation", on page 68
●
Chapter 4.4.8, "Restoring the Previous Value", on page 68
4.4.1 Working with the Cursor
After the instrument is switched on, the cursor is always on the first function block of
the diagram (default setting).
Moving the cursor on the display
► To move the cursor, use one of the following alternative methods:
a) Use the rotary knob or the arrow keys.
b) Use the "Winbar" key in the key emulation to toggle between the active dialogs.
c) Use the ESC key.
Tip: Be aware that the function of the ESC key depends on the current cursor position.
The function of this key depends on the current cursor position.
● Calls the next higher selection level.
● Closes the open window without accepting new entries; the old value or parameter is retained.
● In dialog boxes that contain a "Cancel" button it activates that button.
● Closes all kinds of dialog boxes, if the edit mode is not active.
● Quits the edit mode, if the edit mode is active.
● Switches between different entry fields of a menu.
● Shifts the entry cursor from the header display to the previously active menu, or
to the previously highlighted block in the block diagram if no menu is active.
Moving the coursor to the heading area
► Press the FREQ (CTRL+F) or LEVEL (CTRL+L) key to move the cursor to the
header area.
4.4.2 Selecting a Control Element
Control elements are always selected in the same way no matter whether a function
block in the diagram, a menu in the menu tree, a parameter in the menu or an entry in
a list or table is concerned.
► To activate an element, put the cursor on it.
An active element is highlighted by a blue frame.
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Setting Parameters
4.4.3 Switching Parameters On/Off
A parameter can be activated and deactivated using a button or a check box.
1. Select the parameter.
2. To change the state of a parameter, use the "Enter" function of the different control
media:
● Press the rotary knob
● Press ENTER
● Press the TOGGLE ON OFF (CTRL+T) key.
Colour and label of a button change, the check box is ticked or the tick is removed.
4.4.4 Entering a Value
Numeric and alphanumeric values can be edited in the entry fields. In the editing
mode, cursors of different colour are used. A blue cursor indicates the overwrite mode,
a green cursor the insert mode.
Numeric and alphanumeric values can either be newly entered or the existing value
can be changed. Incorrect entries are cleared with the BACKSPACE key.
Entering a new numerical value
1. Select the parameter.
2. Press a numeric key to activate the editing mode.
The previous value is cleared and the new value can be entered.
Editing a value in the insert mode (default setting)
1. Press the rotary knob (= Enter) to activate the editing mode.
If the cursor is placed at the right of the total value, the insert mode is always
active.
2. Set the cursor to the left of the number to be changed using the LEFT/RIGHT
arrow keys.
The cursor is displayed in green.
3. Click on a numeric key to insert a new value.
Editing a value in the overwrite mode
1. Activate the editing mode.
2. Set the cursor on the numeric digit to be changed using the LEFT/RIGHT arrow
keys.
The cursor is displayed in blue and the number to be replaced is highlighted.
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Setting Parameters
3. Click on a numeric key to overwrite the highlighted value.
Varying a value
1. Activate the editing mode.
2. Set the cursor to the left of the number to be changed using the LEFT/RIGHT
arrow keys.
The value at the cursor position is varied.
3. To vary the selected value, use the UP/DOWN arrow key or turn the rotary knob.
The value is increased or decreased.
Entering a new alphanumerical value
1. Select the parameter.
2. Press an alphanumeric key to start the editing mode.
The new value is entered.
Editing an alphanumerical value
An existing value, e.g. a file name, can be changed in the insert mode (see example)
or in the overwrite mode.
1. Select the paramter and activate the editing mode.
2. Set the cursor to the left of the alphanumerical value using the LEFT/RIGHT arrow
keys.
Tip: If hexadecimal values are to be entered, the numeric front-panel keys are
automatically changed to hexadecimal values.
3. Click on an alphanumeric key to insert a new alphanumerical value.
Terminating the entry of a numeric value
To terminate the entry of a numeric value:
1. Press the rotary knob (= Enter).
2. Press a UNIT key on the front panel.
3. Select a "Unit" in the selection field next to the parameter value.
4.4.5 Working with Units
The unit of a parameter is displayed next to the value. When the parameter is edited,
the unit is selected either from the list or by means of the front-panel keys. When the
entry is completed, the unit can be changed. In this case the value remains unchanged
but is automatically adapted to the new unit.
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Setting Parameters
While operating the instrument by means of a mouse, assign the unit to the selected
parameter before entering its value.
Assigning a unit
To assign a unit to a value, use one of the following alternatives:
1. Press a UNIT key on the front panel.
2. Select a "Unit" in the selection field next to the parameter value.
Press the ENTER key.
The unit displayed in the entry field next to the value is assigned.
Changing a unit
To subsequently change a unit, i.e. after the entry has been terminated and when the
editing mode is not active, use one of the following alternatives:
1. Press a UNIT key on the front panel.
2. Select"Unit" in the selection field next to the parameter value.
The value remains unchanged but the display is automatically adapted to the new
unit, i.e. the value is recalculated to suit the new unit.
The new unit is indicated in the value field of the menu.
4.4.6 Selecting a Value from a List
Selection lists provide a list of predefined values for the selected parameter.
To select a item from a list, proceed as follow:
1. Press ENTER key to open the list.
2. Use one of the following alternatives to navigate through the list:
a) Turn the rotary knob or use the UP/DOWN arrow keys.
The selected item is highlighted.
b) Press TOGGLE ON/OFF key several times until the preferred entry is displayed in the selection field.
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3. To confirm the selection, press the ENTER key.
4.4.7 Terminating Entries with Confirmation
The instrument behaves different by the termination of entries deppending on the
parameter type and the way this parameter is set.
Confirming settings
► To confirm the settings, press the rotary knob or one of the UNIT keys (see also
Chapter 4.4.5, "Working with Units ", on page 66) .
Note: Variations by means of the rotary knob are immediately set.
Confirming multiple values
In some cases, like for instance when editing data in a user correction table, it is useful
first to enter few values and to confirm them together. Such settings require additional
confirmation. Not yet confirmed settings are displayed on a yellow background as an
indication that the currently displayed values do not represent the target signal.
► To confirm these settings, select the "Save" or "Accept" button, respectively.
Confirming parameters with On/Off state
Most of the instrument functions with enabled and disabled states are calculated and
effective only after this functions have been enabled. However, there are functions like
the frequency variation of the reference oscillator for instance, that are immediately set
after confirmation.
► To confirm a parameter with On/Off state, enable the parameter.
4.4.8 Restoring the Previous Value
Parameter variations with the rotary knob are immediately set and therefore not reversible.
Normally, values cannot be restored in the case of mouse control because no explicit
confirmation is required in this case and entries are automatically confirmed when the
entry or selection field is exited.
Restoring values
In the case of front-panel control or operation from the keyboard, previous values can
be restored as long as the new value is not confirmed, i.e. the entry is not completed.
► To restore the values, press the ESC key.
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Editors
Restoring values that require confirmation
All settings that are not confirmed with the "Accept" button but require this additional
confirmation can be restored.
1. Press the ESC key.
A confirmation query is displayed.
2. Confirm with "OK" to abort the changes.
Select "Cancel" to return to the dialog. The previous selected settings are displayed.
Restoring values after an extended calculation has been started
Calculation and setting might require different period of time. Many settings are made
without noticeable calculation times; such operations are indicated by a "BUSY" message displayed in the status field of the header section.
A window with a progress indicates that the instrument performs an extended calculation that requires longer calculation time. The termination of such a calculation restores
the previous values.
► Press the ABORT button to terminate the calculation.
All previous values are restored.
4.5 Editors
The R&S SMC provides a user-friendly editor for defining frequency and level value
pairs, that are used for user-defined level correction (UCOR). The data is edited in a
list editor, as described in Working with List Editor .
The lists are saved to files and may thus have any length. The file name of the lists and
the directory to which the files are saved are user-selectable. The file prefix is different
for each list type and is permanently assigned by the system.
For information about file handling and overview of the automatically assigned file prefixes, refer to Chapter 4.7, "File Management", on page 72.
4.5.1 Working with List Editor
The "List Editor" contains a table for entering user-defined frequency and level value
pairs. You can access the editor from the "User Correction" dialog. User correction is
used to increase the level accuracy of the RF output signal by means of user-defined
level correction values.
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Editors
Editing list mode data lists
1. To access a list editor and open an existing data list for editing, use the cursor keys
to select the associated button "Edit User Correction Data..." or "Edit List Mode
Data..." (if available) in the individual menu.
The selected list is displayed and the cursor marks the first row of the
"Frequency/Hz" column.
If no list has been selected, a blank list of only one row is displayed.
2. Press the LEFT/RIGHT arrow keys to change between the colums.
Use the UP/DOWN arrow keys to mark a row.
3. Use the numeric keys to enter the value for the value pairs in the "Frequency/Hz"
and "Power/dBm" table columns. A blank row is inserted at the end of the list.
Terminate the entry by pressing a UNIT key.
4. To select a row, select the "GoTo" button and press the ENTER key.
Use the numeric keys to enter the row index in the entry field and press the
ENTER key to confirm the entry.
The cursor moves to the selected row.
5. To insert a new row in the table, select the row above which the new row is to be
inserted and select "Insert Row(s)".
A row is inserted above the currently marked row.
If no row has been selected, a row is inserted at the beginning of the list.
6. Use the "Save" function to save the edited list under its current name.
Enter the file name in the "File Select" dialog and select the directory (see Chapter 4.7.1, "File Select Dialog", on page 73).
Only complete value pairs are taken into consideration; rows containing an entry in
only one column are ignored.
Creating a new list mode data list
A new list can be created under a new name either by generating a blank file in the
"File Select" menu (see section Chapter 4.7, "File Management", on page 72) or by
changing an existing list which will then be saved under a new name.
1. To create an empty data list, select "RF > User Correction > User Cor. Data... >
New User Correction Data" and enter the file name of the new data list.
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How to Use the Help System
2. To open the data list for editing, select the associated button "Edit User Correction
Data...".
Edit the list and save it under a new name.
4.6 How to Use the Help System
The R&S SMC is equipped with a context-sensitive help function. A help page is available for each parameter and can be called any time during instrument operation.
Calling context-sensitive and general help
► To display the general help dialog box, press the HELP (F1) key.
The help dialog is displayed. A topic containing information about the current menu
or the currently opened dialog box and its function is displayed.
On top, the help dialog box contains a navigation bar with:
●
"Contents" - accesses a table of help contents
●
"Index" - switches to an index table
●
"Back "/"Previous"/"Next" for navigation to further help topics
Navigating in the table of contents
1. To navigate within the table of contents entries, use the UP/DOWN keys. Entries
that contain further entries are marked with a plus sign.
2. To display a help topic, press the "ENTER" key.
The corresponding help topic is displayed.
Navigating in the help topics
1. To scroll through a page, use the UP/DOWN arrow keys.
2. To follow a cross-reference, select the link text.
3. To return to the previous page, select "Back".
This function scrolls back all steps that you have performed before.
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File Management
4. Use the "Scroll Right" or "Scroll Left" buttons to shift the indicated area of the navigation window to the left or right.
Using the Index
1. Select "Index".
2. Enter the first characters of the topic you are interested in. The entries starting with
these characters are displayed.
3. Press the ENTER key to change the focus.
4. Use the UP/DOWN keys to navigate and select the suitable keyword.
5. Press the ENTER key to display the help topic.
The corresponding help topic is displayed.
Closing the help window
► Press the HELP (F1) key.
4.7 File Management
The R&S SMC uses files to save all instrument data, i.e. system and user data.
The user data includes saved instrument settings and lists and the user correction.
The files are stored in the internal memory of the instrument or on a USB memory
stick. The /var directory can be used to save user-defined data; any subdirectory
structure can be created on /var. Some default subdirectories are predefined, but can
be changed at any time.
The /opt directory is a protected system drive and therefore unaccessible system
directory. The files on this directory contain data that must not be changed. Therefore,
this drive should not be accessed, since reconstruction of the system partition will lead
to data loss. To prevent inadvertent deletion or overwriting of system files, this drive is
not specified in the file menus.
Files can be exchanged either via a memory stick or a connected network. A memory
stick is connected to the USB interface and is assigned the var/usb/ drive. In the
case of a connected network, all network drives that can be accessed are available.
The files are accessed in a "Save/Recall" dialog in the individual menus.
The files are differentiated according to their extensions; each type of file is assigned a
specific file content. The extension is usually of no consequence to the user since
access to the files occurs in the individual menus where only the relevant type of file is
available. See Chapter 4.7.2.1, "Extensions for User Files", on page 75 for an overview of the supported file extensions.
The user data can be roughly divided into the following data types:
●
Settings
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File Management
Instrument settings can be saved and loaded. In case of saveing, the current setting is saved to the specified file.
●
Lists
Lists, e.g. user correction lists, can be loaded. They can be generated either externally or internally. For internal generation, a new list must be created in the "File
Select" dialog which will then be edited in the list editor of the individual menu.
For more information, refer to:
●
Chapter 4.8, "Legend of Front-Panel Controls", on page 76 for an overview of key
functions and a cross-reference between the front panel keys and the keyboard
shortcuts
●
to section "Instrument Functions" for a detailed description of key functions.
Accessing files with user data
1. To access an editable user data file, select the "Save/Recall" or "File Manger" function in the individual dialog.
2. To access a loadable data file, select the "Select/New" or "File Manager" function
in the individual dialog.
3. To access the "File Manager" function, press the SETUP (CTRL+E) key and select
"Save/Recall > File Manager".
A "File Select" window for loading, saving or creating a file or the "File Manager"
dialog for managing all files is displayed.
Saving and loading of all instrument settings
All instrument settings are saved and loaded in the "File" menu.
To access the "File" menu, press the FILE (CTRL+S) key.
For more information, see Chapter 5.2.8, "Storing and Loading Instrument Data - File
Key", on page 111.
4.7.1 File Select Dialog
The "Save/Recall" dialaog displays the available drives and directories. In the upper
part, "Recent Data Sets", the files last used are listed.
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File Management
The available drives and directories and the files of the selected directory are displayed. The currently selected path is displayed above the window. Only the relevant
files without file extensions are displayed. If the area is opened several times, the path
last selected is displayed. When a file is saved or created, its name is user-selectable;
the extension is assigned automatically and cannot be entered. The file is saved to the
selected path.
In addition to the files saved by the user, some menus also offer files containing predefined contents. These files are saved to a specific directory on system drive; for this
reason, this directory cannot be chosen from the "File Select" menu.
Working with the File Select dialog
1. Access the "File Select" dialog (see "Accessing files with user data" on page 73).
2. Navigate in the "File Select" dialog.
3. Load an existing file.
In the "Recall Settings" dialog, mark a file and press the "Select" button.
4. Save a file.
In the "Save Settings" dialog, enter file name in the "File Name:" field.
Select the directory to which the file is to be saved and then select the "Save" button.
5. Create a new file.
To create a new file, use the "Save Settings" functionality, i.e. specify file name and
directory and save the file.
The created file is empty; it must be filled with the necessary values in the individual editor.
4.7.2 File Manager
The "File Manager" allows general file management such as copying, shifting, renaming and deleting files as well as generating new directories.
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File Management
Use the "File Type" to select a file type from the list. This can be used to process either
all files (all files (*) selection) or a specific selection of files. See Chapter 4.7.2.1,
"Extensions for User Files", on page 75 for an overview of the supported file extensions. The available drives and directories and the files of the selected directory are
displayed. The currently selected path is displayed above the windows. If the area is
opened several times, the path last selected is displayed. Unlike the "File Select" window, the "File Manager" displays the full file names including extensions.
Working with the File Manager dialog
1. Accessing the "File Manager" dialog (see "Accessing files with user data"
on page 73).
2. Navigating in the "File Manager" dialog.
Operation is very similar to the operation of a standard Windows explorer.
3. Moving, duplicating, deleting or renaming files
To move a file, select the file and press the "Cut" button. Mark the directory to
which the file is to be moved and select the "Paste" button. If the target directory
already contains a file with the same name, a confirmation query is displayed to
confirm overwriting of this file.
Perform the similar steps and cut/copy/rename/delete the file.
Tip: The operation corresponds to the Windows concept.
4. Creating a new directory
Mark drive or directory level where the new directory is to be created, select the
"Create New Directory" button and enter the name of the new directory in the entry
window that opens. Confirm with ENTER.
4.7.2.1
Extensions for User Files
The following table lists all available file extensions for user files. The currently available files on the instrument depend on the installed options.
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Legend of Front-Panel Controls
Table 4-1: List of the automatically assigned file extensions in the instrument
Function
List type
Contents
File suffix
Instrument State
Settings
Instrument settings
*.savrcltxt
"User Correction"
List
User-defined level correction values
*.uco
Export Data
*.txt or *.csv
NRP Settings
*.nrp
NRP Settings
Settings
4.8 Legend of Front-Panel Controls
The following table lists all key functions available on the front panel. Key combinations
used on the PC keyboard to trigger key functions on the instrument front panel are also
described. Keyboard labels are described in alphabetical order.
In addition, a front panel key emulation and an on-screen keyboard can be used for
manual operation by mouse only.
Table 4-2: Cross-reference between the front panel keys and keyboard shortcuts
Front-panel key
Key of PC keyboard
Function
Turning the rotary
knob
Tab key (towards the right)
Sets the cursor with the rotary knob.
Pressing the rotary
knob
Enter
Pressing the rotary knob confirms an entry; it has
the same function as the ENTER key.
Arrow keys
Arrow keys
Moves the cursor.
ENTER / dB(m)
Enter
Terminates an entry.
ALT + F12
Confirms entries in the base unit and values without a unit.
Shift + Tab (towards the left)
Selects dBm for the RF level and dB for level offset
and level step width.
. / *...#
. / *...#
Enters a period/decimal point. Enters a special
character.
- / A<->a
- / (shift+) a—z
Enters the sign.
Switches between upper-case and lower-case letters.
0-9 / a...z
CTRL+ 0-9 / a...z CTRL
Enters the number/letter.
BACKSPACE
Backspace
Clears the last entry (number, sign or decimal
point)
ESC / CLOSE
ESC / CTRL + G
Selects the next higher menu/selection level. When
the editing mode is exited with ESC, the previous
value is restored.
Closes an active menu.
DIAGR
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Sets the cursor on the block diagram and hides all
menus.
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Legend of Front-Panel Controls
Front-panel key
Key of PC keyboard
Function
FREQ
CTRL+ F
Activates the frequency entry.
G/n / dBuV
ALT + F9
Selects the unit Giga/Nano, dBuV for the RF level
and dBu for the LF level.
HELP
F1
Opens/closes context-sensitive help.
INFO
CTRL + I
Opens/closes the info window
k/m / mV
ALT + F11
Selects the units kilo/milli and mV for RF levels.
LEVEL
CTRL + L
Activates the level entry.
LOCAL
CTRL + Q
Switches the instrument from remote control to
manual control.
M/u / uV
ALT + F10
Selects the units Mega/Micro and uV for RF levels.
MOD ON/OFF
CTRL + O
Switches modulation on/off. "MOD OFF" is indicated in the status line.
CTRL + T
Switches a block or parameter on/off.
Toggles between the different possibilities of setting a selection parameter.
PRESET
CTRL + P
Restores a defined basic instrument setup.
RF ON/OFF
CTRL + R
Switches the RF output signal on/off. "RF OFF" is
indicated in the status line.
SETUP
CTRL + E
Opens the setup menu for general instrument settings.
4.8.1 Front Panel Key Emulation
The R&S SMC provides a front panel key emulation to enable execution of the front
panel key functions by mouse e.g. for remote access. The emulation is called by a right
mouse click. The front panel key functions are executed by a mouse click on the associated button.
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Instrument Function
Overview of Instrument Functions
5 Instrument Function
5.1 Overview of Instrument Functions
This chapter explains the functions of the R&S SMC and the options available in the
setting menus. The associated SCPI command is specified for each parameter (where
applicable).
The description starts with the general instrument settings which do not directly affect
signal generation. The majority of these settings can be accessed by means of frontpanel softkey menus and not by means of function block menus.
The signal generation functions are then described, beginning with the functions which
affect the RF signal ("RF" block) and the analog modulations ("Mod" block). The configuration of the modulation generators (LF generators and pulse generator) and of the
LF sweep is offered in the "Mod Gen" block. The clock synthesis signal is set in the
"Clock Synthesis" block.
The general instrument settings include various functions, such as:
●
Setting a defined basic setup using the PRESET key
see Chapter 5.2.2, "Default Instrument Settings - Preset Key", on page 79
●
Switching from remote control to manual control using the LOCAL key
see Chapter 5.2.4, "Switching to Manual Control - Local Key", on page 106
●
Configuring the generator and its interfaces in the "Setup" dialog - e.g. setting the
GPIB address, starting an adjustment, querying instrument data
see Chapter 5.2.3, "General Configuration of Instrument - Setup Key",
on page 80
●
Calling up the online help using the HELP key
see Chapter 5.2.7, "Help System - Help Key", on page 110
●
Querying messages using the INFO key
see Chapter 5.2.6, "Messages - Info Key", on page 110
●
Loading and storing complete instrument settings in the "File" menu
see Chapter 5.2.8, "Storing and Loading Instrument Data - File Key", on page 111
The RF signal and the reference oscillator are configured in the "RF" function block:
●
CW mode
see Chapter 5.3.1, "Overview of RF Signal", on page 120
●
Frequency and Level Sweep mode
see Chapter 5.3.7.1, "Overview", on page 156
●
Reference Oscillator
see Chapter 5.3.4, "Reference Oscillator", on page 126
●
RF Level
see Chapter 5.3.5.1, "Overview of RF Level", on page 128
●
RF Level Sweep
see Chapter 5.3.7.3, "RF Level Sweep", on page 164
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General Instrument Settings
●
ALC
see Chapter 5.3.5.4, "Automatic Level Control - ALC", on page 134
●
Power Sensors
see Chapter 5.3.6.1, "NRP-Z Power Viewer", on page 148
●
User Correction
see Chapter 5.3.5.6, "User Correction", on page 140
The analog and external digital modulations are activated in the "Modulation" function
block:
●
Amplitude Modulation
see Chapter 5.4.2, "Amplitude Modulation (AM)", on page 171
●
Frequency Modulation
see Chapter 5.4.3, "Frequency Modulation (FM)", on page 173
●
Phase Modulation
see Chapter 5.4.4, "Phase Modulation (PhiM)", on page 175
●
Pulse Modulation
see Chapter 5.4.5, "Pulse Modulation (PM)", on page 177
The internal LF generators, the LF frequency sweep and the pulse generator are configured in the "Mod Gen" function block:
●
LF Frequency Sweep
see Chapter 5.5.3, "LF Frequency Sweep", on page 180
●
LF output
see Chapter 5.5.2, "LF Output", on page 179
5.2 General Instrument Settings
5.2.1 Overview of General Instrument Settings
This section describes the settings which do not directly affect signal generation. Most
of these settings can only be accessed by means of menus which are opened using
keys or key combinations on the external keyboard or keys on the front panel key emulation.
The general instrument settings therefore affect various functions, such as storing
instrument settings using the FILE key or setting the GPIB address in the menu of the
SETUP key. The order in which the descriptions are given corresponds to the layout of
the keys on the front panel of the R&S SMC (from top left to bottom right).
5.2.2 Default Instrument Settings - Preset Key
The PRESET key performs a defined instrument setup. All parameters and switching
states are preset (also those of inactive operating modes). The default instrument settings provide a reproducible initial basis for further settings.
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However, functions concerning the integration of the instrument in a measurement
setup are not changed, for example the GPIB address or reference oscillator settings.
When the instrument is switched on, it is not the preset state that is active, but rather
the instrument state that was set before the instrument was switched on.
User-defined instrument states can be accessed and stored in the "File" menu.
Resetting the instrument to the factory state is possible with the Factory Preset function.
Preset
Presets all parameters and switching states.
The following list gives an overview of the presets for the most important generator settings. The other presets can be found in the preset tables of the individual menus and
the information accompanying the remote commands.
● "RF frequency" = 1 GHz
● "RF level" RF output switched off
● "Offsets" = 0
● "Modulations State" = Off
● Uninterrupted level settings are switched off
"Level Attenuator Mode" = AUTO
● Internal level control "Level ALC" = AUTO
● User correction "Level Ucor" = OFF
● "LF output State" = Off
● "Sweep State" = Off
Settings that are not affected by the PRESET key
●
●
●
●
●
●
●
●
Reference frequency settings ("Ref Oscillator" menu)
Power on settings ("Level/EMF" menu)
Network settings ("Setup" menu)
GPIB address ("Setup" menu)
*IDN? Identification and emulation ("Setup" menu)
Password and settings protected by passwords ("Setup" menu)
Start/Stop Display Update ("Setup" menu)
Display and keyboard settings ("Setup" menu)
Remote command:
*RST on page 236
5.2.3 General Configuration of Instrument - Setup Key
The "Setup" menu provides access to basic instrument settings, regardless of the currently set operating mode or measurement. It contains information on the insstrument's
equipment, and comprises all settings for the general configuration of the instrument
and its interfaces.
To access the "Setup" menu, press the SETUP key.
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The "Setup" menu is divided into functional sections as follows:
●
"System": covers general instrument parameters.
●
"Test": used to perform function tests.
●
"Environment": used to configure the controller interfaces.
●
"Remote": used to configure the remote control interfaces.
●
"Protection": used to set the protection level for service functions and security settings.
●
"Settings": used to save or recall instrument settings or to preset the instrument to
factory settings.
Most submenus of this key can be accessed only via the SETUP key or the menu tree
( MENU key), with the following exceptions:
●
5.2.3.1
The "Reference Oscillator" dialog can also be accessed in the "RF" block and is
therefore described in the section on this block (see Chapter 5.3.4, "Reference
Oscillator", on page 126).
Internal Adjustments
The R&S SMC is extremely accurate due to the integrated adjustment procedures,
which you can execute directly on the instrument.
Self-calibration routines that do require additional (external) measurement equipment
are either described in the Service Manual of the instrument, or they require to be performed by a Rohde & Schwarz service center.
Risk of invalid adjustment
In order to achieve correct adjustment of the instrument, make sure that the instrument
is warm before performing adjustments. The warm-up time is 30 minutes.
When to perform adjustments?
It is recommended to perform internal adjustments prior to any application that requires
a maximum of level and frequency accuracy, especially when a long period of time has
passed or if the ambient temperature of the instrument significantly differs from the one
of the last adjustment.
Additional Information to the Adjustments
During adjustments, a progress indicator shows the status of the process. If any error
occurs, the process aborts and an error message appears in the info line.
The extent of the adjustments depends on the installed options.
► To access the settings for internal adjusmtents, press the SETUP key and select
"System > Internal Adjustments".
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In this dialog you can perform internal calibration routines.
The remote commands required to define these settings are described in Chapter 7.4,
"CALibration Subsystem", on page 240.
Adjust All
Performs all available internal calibration routines of the instrument.
Remote command:
:CALibration<hw>:ALL[:MEASure]? on page 240
Adjust Synthesis
Performs all adjustments which affect the frequency.
Remote command:
:CALibration<hw>:FREQuency[:MEASure]? on page 240
Adjust Level
Performs all adjustments which affect the level. The acquired correction values
improve the settling time and the signal quality.
Remote command:
:CALibration<hw>:LEVel[:MEASure]? on page 241
5.2.3.2
Hardware Config
In the "Hardware Config" dialog, the installed assemblies together with their variants
and revision states can be displayed for servicing purposes.
To open the "Hardware Config" dialog, select "System" and press the SETUP or
MENU key.
Section "Counter" in the upper part of the menu shows the "Operation Time" (in hours)
and the number of power-on ("Power On Counter").
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The second part of the menu is a table that lists the installed assemblies. It is divided
into the sections:
●
"Common Assembly"
●
"RF Assembly"
Power On Count
Displays the number of power-on.
Remote command:
:DIAGnostic:INFO:POCount? on page 243
Assembly
The tables list the installed assemblies.
"Assembly"
Assembly name
"Part Number"
Part Number of assembly
"Revision"
Revision state of assembly
Remote command:
:DIAGnostic<hw>:BGINfo? on page 242
5.2.3.3
Software / Options
The "Software/Options" dialog shows the firmware version of the instrument software
and all installed hardware and software options.
Software options purchased at a later stage can be activated with a keycode. The activation code is supplied with the software option.
How to install options is described in chapter 4 "Software Update / Installing Options"
of the service manual.
The installation of hardware options purchased at a later stage is also described in the
service manual. Most hardware options need to be installed at an authorized
Rohde&Schwarz service shop.
To access the "Software/Options" dialog, select "System" and press the SETUP or
MENU key.
The menu is divided into the following sections:
●
"Firmware"
●
"Hardware Options"
●
"Software Options"
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Firmware
The firmware section of the menu shows the firmware version and the version of the
software platform.
Note: Your instrument is delivered with the latest firmware version available. Firmware
updates and the "Release Notes" describing the improvements and modifications are
provided on the Internet at the download site of the Rohde & Schwarz signal generator
home page. This home page always offers the latest information on your signal generator, e.g. also on changes of the firmware update procedure.
Remote command:
n.a.
Hardware Options / Software Options
The tables in the sections "Hardware" and "Software" list the installed hardware and
software options.
"Option"
Short name of option
"Designation"
Name of option
Remote command:
*OPT? on page 235
*IDN? on page 235
Loaded Modules
Section "Loaded Modules" is provided for service purposes. It lists all loaded software
modules with their versions and offers a short description of each module.
Remote command:
n.a.
5.2.3.4
Manage License Keys
This dialog is the central dialog for managing licenses, like enabling newly purchased
and/or newly registered options or performing the required instrument related steps
during the process of unregistration of licenses.
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An option is ready to operate after it is enabled by means of a license key code supplied with the option. The license key is delivered as a file or on paper. Unregistered
licenses must be registered for a particular instrument prior to the corresponding option
can be enabled for operation.
License Registration
If your purchased license is delivered unregistered, you must register it before you can
activate the option.
For detailed information about the license registration, refer to the installation instructions provided with the option (Supplement A) and the documentation of the online tool
"Manage Licenses" (https://extranet.rohde-schwarz.com/service).
Only if the R&S SMC is equipped with an older firmware version, a firmware update
prior to enabling the software option may be required. The information on the valid
firmware versions for the purchased software option is provided together with the
option.
The firmware update is described in the service manual, chapter 4.
Device ID
Displays the instrument specific identification number. The device ID is an unique
string with the following structure:
<stock number>-<serial number>-<checksum>
Enter License Key
Type here the license key provided with the option.
For license keys delivered as a file, use Import License Key from File....
Import License Key from File...
Opens a dialog for selecting the file with the license key.
Export Deactivation Response to File...
Exports the generated deactivation response key to a file and opens a file management dialog to save the file. This key is required during the unregistration process.
Status Information
Displays status information.
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5.2.3.5
NRP-Z Info/Update
The "NRP-Z Info/Update…" dialog covers information on connected power sensors,
like serial number, revision state and features of the particular sensor. You can directly
perform an update of the sensor firmware.
► To access this dialog, select "Setup > System > NRP-Z Info/Update…".
The "NRP-Z Info / Update" dialog indicates the connected R&S NRP-Z Power Sensors with specific information and contains the functions to update the firmware of
a connected sensor.
The remote commands required to remotely configure the power sensor settings are
described in Chapter 7.12, "SENSe, READ and INITiate Subsystems", on page 268.
How to update an R&S NRP sensor
To perform an R&S NRP sensor update proceed as follows:
1. Open the R&S website http://www.rohde-schwarz.com in section "Power Meters &
Voltmeters > R&S NRP-Z Sensors".
2. Select the respective sensor, e.g. R&S NRP-Z81.
3. Select "Downloads > Firmware" and the offered firmware suitable for your sensor.
4. Transfer and save the firmware on the instruments, for example in the /var/
directory.
5. Connect the sensor to the R&S SMC and select "Setup > System > NRP-Z Info
Update" to open the dialog.
6. Select the sensor in the left sensor selection field.
7. Select the update file with "Select NRP File".
8. Start the update procedure with "Run Update".
The update starts and a bar indicates the progress.
How to restart an interrupted update of an R&S NRP sensor
An accidental removal of the sensor during the update process interrupts the update.
If no other sensor is connected to the instrument, proceed as follows to restart the
update process:
1. Do not reconnect the sensor but keep it ready to be connected.
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2. In the "Setup > System > NRP-Z Info Update" dialog, select "Rescue" in the left
sensor selection field
3. Activate "Run Update".
4. Confirm query in message box
5. Connect sensor within 4 seconds
The update starts, a bar informs about the progress.
Current Sensors
Shows the sensors that are connected to the generator with information on serial number, the revision state and some features.
Tip: Click on a sensor to get quick information about the firmware version and whether
this sensor measures the peak of the signal.
Remote command:
SENSe<ch>[:POWer]:TYPE? on page 276
SENSe<ch>[:POWer]:SVERsion? on page 276
SENSe<ch>[:POWer]:SNUMber? on page 275
Update
Section "Update" provides access to the file system in order to select a file for an R&S
NRP sensor update (Button "Select NRP File"), the selected file is indicated to the left
of the button. On the left side, the sensor to be updated is selected.
Button "Run Update" starts the update.
Note: If the update is interrupted for example by accidental removal of the sensor during the process, the button "Rescue" appears. Thus, you can restart the update process.
Prerequisite is that no other sensor is connected to the instrument.
Refer to "How to update an R&S NRP sensor" on page 86 and "How to restart an interrupted update of an R&S NRP sensor" on page 86 for detailed instructions.
Remote command:
n.a.
5.2.3.6
Display Update
The "Start/Stop Display Update" dialog provides the possibility to switch off update of
the displayed parameters in order to increase speed for certain settings.
The indicated values are not updated and may therefore differ from the intern, used
values.
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Display Update is On/Off
Switches on/off update of the displayed parameters.
Switching off the update of the displayed parameters increases the speed for certain
settings.
Note: For optimum sweep performance with short dwell times and for fast settling
times, it is recommended to switch off the display update .
Remote command:
:SYSTem:DISPlay:UPDate on page 359
5.2.3.7
Selftest
A selftest is provided for service purposes.
Access:
1. Select "Setup > Test > Selftest"
2. Select "Start Selftest".
The following tests are only available via remote control:
●
:TEST<hw>:DIRect on page 363
Start Selftest
Performs a selftest on all installed hardware options.
When completed, the R&S SMC displays a list of all performed test cases and the test
results (passed or failed).
Note: While the self test is in progress, the actual signal level at the RF output is -50
dBm. This value is not indicated in the status bar.
Remote command:
:TEST<hw>:ALL:STARt on page 362
:TEST<hw>:ALL:RESult? on page 362
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5.2.3.8
Check Front Panel
With the functions provided in this dialog you can verify the functionality of the control
keys of the R&S SMC.
In case of malfunctions, contact your Rohde & Schwarz Customer Support Center for
technical support, see http://www.customersupport@rohde-schwarz.com.
Accessing the online help in the check front panel dialog or exiting via ESC
During the test, the actual functions of all keys are disabled, including the HELP and
the ESC keys.
Check Front Panel Settings
► To access this dialog, Press the "setup" key and select "Setup > Test > Check
Front Panel".
Reflecting the front panel, the "Check Front Panel" dialog contains all functions to
test the operating elements of the instrument.
Performing the Front Panel Tests
To perform the front panel test, you operate the keys at the front panel, and check the
response of the instrument in the "Check Front Panel" dialog. To perform this test
properly, it is essential that you check each key of the front panel. The test is only completed, when you have veryfied all keys.
During the test, the actual functions of the keys are disabled.
Proceed as follows:
1. Press the SETUP key.
2. Select "Test > Check Front Panel"
The "Check Front Panel" dialog opens.
3. Press a key on the front panel.
Check if the corresponding key in the "Check Front Panel" dialog turns green.
4. Press the same key a second time.
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Check that the key in the dialog turns red.
Note: Pressing the same key again has no further effect, with the exception of the
ESC key, see Press the ESC key a third time.
5. Continue with the next key on the front panel and repeat step 3 to step 5 until all
keys are tested.
The test is completed, when each key is verified successfully, confirmed by a "Test
passed" message.
Select "OK" to exit the test.
► Press the ESC key a third time.
Exits the "Check Front Panel" dialog, even if you have not yet checked all the keys.
Expected responses:
●
Pressing a key once (green), pressing twice (red)
●
Pressing the ESC key a third time exits the dialog.
If you detect a malfunction, for example, you press the front panel key the first time,
and the color of the button in the dialog turns red (instead of green), the front panel key
may be stuck. In this case, contact the Rohde & Schwarz Customer Support Center for
technical support, see http://www.customersupport@rohde-schwarz.com.
5.2.3.9
Shutting Down and Rebooting the Instrument
The POWER ON/STANDBY front panel key switches the instrument from the standby
to the ready state or vice versa. In remote operation form a remote computer or in
manual control, the R&S SMC provides you with another possibility to shut the instrument down or to reboot the system.
► To access the required settings, select "Setup > Environment > Shut Down".
Remote control commands:
●
:SYSTem:SHUTdown on page 359
●
:SYSTem:REBoot on page 358
●
see also :SYSTem:RESTart on page 358
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5.2.3.10
Network Settings
The "Network Settings" dialog shows the parameters relevant for identifying the instrument in a network. The R&S SMC is equipped with a network interface and can be
connected to an Ethernet LAN (local area network).
How to connect the signal generator to the network is described in Chapter 2.6.1,
"Connecting the Instrument to the Network", on page 34.
Risk of network errors!
Connection errors can affect the entire network.
If your network does not support DHCP, or if you choose to disable dynamic TCP/IP
configuration, you must assign valid address information before connecting the instrument to the LAN.
Contact your network administrator to obtain a valid IP address.
► To access this dialog, press the SETUP or MENU key and select "Environment >
Network Settings".
In the "Network Settings" dialog, you can configure the settings of the general network environment and specific identification parameters of the instrument in the
network.
The remote commands required to remotely configure the network are described in
Chapter 7.15, "SYSTem Subsystem", on page 347.
Network Status
Indicates that the instrument is connected to the network.
Remote command:
:SYSTem:COMMunicate:NETWork:STATus? on page 354
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Hostname
Displays the host name.
Each instrument is delivered with an assigned host name, a logical name which can be
used instead of the IP address. With the default network settings, the IP address is
allocated by the DHCP server. This address may change each time the instrument is
reconnected. Unlike the IP address, the host name does not change.
Note: Since the host name of the instrument is a protected parameter, you must first
unlock protection level 1 to enable the entry (see Chapter 5.2.3.14, "Protection",
on page 98).
It is recommended that you neither change the default network settings nor the host
name in order to avoid problems with the network connection.
However, if you change the host name be sure to use an unique name.
Remote command:
:SYSTem:COMMunicate:NETWork[:COMMon]:HOSTname on page 352
Workgroup
Sets the individual windows workgroup name of the R&S SMC. This parameter is
required in case the instrument is integrated in a windows network.
Note: Since the workgroup name of the instrument is a protected parameter, you must
first unlock protection level 1 to enable the entry (see Chapter 5.2.3.14, "Protection",
on page 98).
Remote command:
:SYSTem:COMMunicate:NETWork[:COMMon]:WORKgroup on page 352
Address Mode
Selects the mode for assigning the IP address.
"Auto (DHCP)"
Assigns the IP address automatically, provided the network supports
DHCP (Dynamic Host Configuration Protocol)
The network used must support automatic assignment of the IP
address via DHCP or APIPA (Zeroconf) in order to use this function.
"Static"
Enables you to assign the IP address manually.
Remote command:
:SYSTem:COMMunicate:NETWork:IPADdress:MODE on page 353
IP Address
Displays the IP address.
By default, the R&S SMC is configured to use dynamic TCP/IP configuration and to
obtain the whole address information automatically.
If the network does not support DHCP or the attempt does not succeed, the instrument
tries to obtain the IP address via Zeroconf (APIPA) protocol. IP addresses assigned via
Zeroconf start with the number blocks 169.254.*.*.
Note: An IP address that is assigned via the Zeroconf protocol while the network
requires an IP address assigned via the DHCP server may cause network connection
failures.
See Chapter 9.5, "Resolving Network Connection Failures", on page 378.
To assign the IP address manually, select Address Mode "Static".
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Remote command:
:SYSTem:COMMunicate:NETWork:IPADdress on page 353
Subnet Mask
Displays the bit group of the subnet in the host identifier.
To assign the subnet mask manually, select Address Mode "Static".
Remote command:
:SYSTem:COMMunicate:NETWork[:IPADdress]:SUBNet:MASK on page 354
Default Gateway
Displays the gateway address.
To assign the gateway address manually, select Address Mode "Static".
This address identifies the router on the same network as the instrument that is used to
forward traffic to destinations beyond the local network.
Remote command:
:SYSTem:COMMunicate:NETWork[:IPADdress]:GATeway on page 353
DNS Suffix
Displays the primary DNS (Domain Name System) suffix, that means the DNS name
without the host name part.
The DNS system uses the suffix for registration and name resolution to uniquely identify the instrument in the entire network.
To assign the DNS suffix manually, select Address Mode "Static".
Remote command:
:SYSTem:COMMunicate:NETWork[:COMMon]:DOMain on page 352
DNS Server
Determines the preferred server for name resolution. The DNS server contains the
underlying numerical values that are required for name resolution of the host name as
part of the IP address.
To select the DNS server manually, select Address Mode "Static".
Remote command:
:SYSTem:COMMunicate:NETWork[:IPADdress]:DNS on page 353
MAC Address
Indicates the MAC (Media Access Control) address, a unique identifier of the network
adapter in the R&S SMC.
Remote command:
:SYSTem:COMMunicate:NETWork:MACaddress on page 354
Restart Network
Terminates the network connection to the instrument and subsequently re-establishes
it.
Used this function to resolve network problems.
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Note: Only the connection of the instrument to the network restarts, the network itself
is not affected.
Remote command:
:SYSTem:COMMunicate:NETWork:RESTart on page 354
5.2.3.11
Display/Keyboard Settings
In the "Display/Keyboard Settings" dialog the power-save mode and external keyboard
settings are made. It is opened using the SETUP or MENU key under "Environment".
Screen Saver Active
Activates/deactivates the screen-save mode of the display.
If activated, the display including backlight is completely switched off after the elapse of
the "Wait Time" when no entries via front panel, external mouse or external keyboard
are made.
This mode is recommended for preserving the display especially if the instrument is
exclusively operated via remote control.
Remote command:
:DISPlay:PSAVe[:STATe] on page 246
Wait Time
Enters the idle time that must elapse before the display lamp is shut off when no
entries are made.
Remote command:
:DISPlay:PSAVe:HOLDoff on page 245
Toggle Summary Screen
Activates/deactivates the magnified frequency and level indication. If activated, the frequency and level indication covers the complete display.
Remote command:
n.a.
GUI Language
Selects the language of the graphical user interface.
Remote command:
n.a.
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Layout (USB Keyboard Settings)
Selects the keyboard layout for the selected keyboard language.
The assignment of some keys depends on the selected layout and language.
Remote command:
:KBOard:LAYout on page 255
:KBOard:LANGuage on page 255
5.2.3.12
Remote Channel Settings
The "Remote Channel Settings" dialog provides access to the settings for remote control. The dialog is opened using the SETUP or MENU key under "Remote".
► To access this dialog, press the SETUP or MENU key and select "Remote >
GPIB,...".
The "Remote Channel Settings" dialog contains the GPIB address and displays the
VISA resource strings provided for remote control via the various interfaces.
GPIB channel address
Sets the address of the GPIB channel the instrument is connected to.
Remote command:
:SYSTem:COMMunicate:GPIB[:SELF]:ADDRess on page 352
RS232 using USB adapter
Remote control via a serial interface is possible via a USB. The controller and the
instrument must be connected with the external USB/serial-adapter R&S TS1-USB
(see recommended extras in the data sheet) and a serial crossover (null modem)
cable. A USB connection requires the VISA library to be installed on the controller.
VISA will detect and configure the R&S SMC automatically when the USB connection
is established.
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In addtion, you can also use a Bluetooth connection for remote control via the serial
interface. The settings are effective for both interfaces (see also Chapter 5.2.3.15,
"Security", on page 99 ).
Baud Rate ← RS232 using USB adapter
Sets the baudrate for the serial remote control interface.
Remote command:
:SYSTem:COMMunicate:SERial:BAUD on page 356
Parity ← RS232 using USB adapter
Sets the parity for the serial remote control interface.
Remote command:
:SYSTem:COMMunicate:SERial:PARity on page 356
Stop Bits ← RS232 using USB adapter
Sets the number of stop bits for the serial remote control interface.
Remote command:
:SYSTem:COMMunicate:SERial:SBITs on page 357
Visa Resource Strings
Displays the visa resource strings, used for remote control of the instrument. Each
interface requires an individual unique address, to identify the instrument for remote
control.
Remote command:
:SYSTem:COMMunicate:HISLip:RESource? on page 355
:SYSTem:COMMunicate:NETWork:RESource? on page 355
:SYSTem:COMMunicate:SOCKet:RESource? on page 357
:SYSTem:COMMunicate:GPIB:RESource? on page 355
:SYSTem:COMMunicate:USB:RESource? on page 355
:SYSTem:COMMunicate:SERial:RESource? on page 356
Goto Local
Switches the instrument to operate in local control mode.
Switching from remote to local control mode can be also done with one of the following
actions:
● manually with the LOCAL key on the front panel
● with the interface command &GTL via the remote control interface
● with the key combination CTRL + Q.
Remote command:
&GTL
5.2.3.13
Instrument Emulations
It is also possible to remotely control the R&S SMC via the command set of another
signal generator, as for example of an HP generator. With this function you can, for
example, replace a signal generator with an R&S SMC in an automated test setup,
without adjusting the command scripts used.
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You find all the remote control command sets supported by the R&S SMC in a selection list. For more information on this topic, an application note describes in detail how
to use this feature. See the product site of the R&S SMC.
The selected instrument also defines the identification string that is retrieved with query
*IDN?. In addition to the preset values, you can enter a user-defined identification
string, for example to provide individual identification for each generator, like
'MY_R&S SMC' (see Mode and IDN String).
As any other parameter, you can additionally change the remote control command set
to be emulated via the Language command. However, once you have switched to an
emulation, the R&S SMC specific command set is disabled, that means this command
is no longer effective. To return, you need to know the corresponding remote control
command of the simulated instrument. If you emulate an HP generator for example,
the HP command EX returns to the SCPI command set.
► To access this dialog, press the SETUP or MENU key and select "Remote > Instrument Emulations".
The "Instrument Emulations" dialog enables you to emulate a remote control command set of several other signal generators.
The remote commands required to remotely configure the emulation settings are
described in Chapter 7.15, "SYSTem Subsystem", on page 347.
Language
Selects the instrument whose remote command set is emulated by the R&S SMC.
Remote command:
:SYSTem:LANGuage on page 357
Mode
Selects the way the instrument identification is performed.
"Automatic"
Sets the "IDN String" and the "OPT String" automatically for the
instrument selected with the parameter Language.
"User Defined"
Enables you to define the "IDN String" and the "OPT String" for the
instrument selected with the parameter Language.
Remote command:
:SYSTem:IDENtification on page 357
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Set to default
Enables you to reset the *IDN and *OPT strings in user defined mode, see "Mode"
on page 97 .
The default strings vary depending on the selected emulation mode (Language)
IDN String
Indicates the identification string of the instrument when queried with the common
command *IDN?.
To assign a user defined identification string, select Mode "User defined".
Remote command:
*IDN? on page 235
OPT String
Indicates the option string of the instrument as queried with the common command
*OPT?.
If a "User defined"(see Mode) IDN String is selected, you can create a user defined
option string in addition to the automatically created one.
Remote command:
*OPT? on page 235
5.2.3.14
Protection
This "Protection" dialog provides access to the unlocking of different protection levels .
Access:
► Select "Setup > Protection"
After power on the instrument, all protection levels are locked. To unlock the protection, the correct password must be entered, see "To unlock or lock a protection level..."
on page 99.
The following functions are protected in the respective levels:
●
Protection Level 1
Protects against accidental changes to certain settings, e.g. clock and date, network settings or instrument names. You can access this protection level with the
password 123456.
●
Protection Level 2
Provides access to the unlocking of protected service functions. It is accessible for
authorized personnel of Rohde & Schwarz service departments.
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●
Protection Level 3-5
Are reserved for factory internal use.
To unlock or lock a protection level...
1. In the "Password" entry field, enter the password for the corresponding protection
level.
2. Confirm with the ENTER key.
The checkbox of the protection level is disabled, i.e. the protection is unlocked.
3. To lock a protection level again, select the checkbox.
Protection Level/Password
Locks or unlocks the corresponding protection level.
E.g. protection level 1 expands the functionality of the internal adjustment and to
access the selftests.
The password is 123456.
Remote command:
:SYSTem:PROTect<ch>[:STATe] on page 358
5.2.3.15
Security
The security concept of the R&S SMC helps you to protect your instrument against
uncontrolled access and changes. All provided security services require that you enter
the security password.
Provided security services are:
●
Password management secures controlled user access to the instrument
With the two-step password concept, you can assign a user-defined password for
the operating system, as well as a security password for accessing the mass storage of the instrument.
For more information concerning the security password, see the description
Resolving Security Issues when Working with an R&S SMC. You can find this
document on the R&S SMC product page at "Downloads" > "Manuals".
●
LAN Services secures controlled network access.
You can individually lock and unlock the supported LAN interface services, see
"LAN Services" on page 101.
Remote control via LAN interface requires that the interface is activated, but you
can enable the required services specifically.
●
General security parameters as:
–
USB Storage secures controlled access to the mass memory of the instrument.
–
Write nonvolatile memory protects against modification or deletion of data in
the file system.
–
Annotation frequency and amplitude prevents reading the display.
–
User Interface prevents front panel operation and/or reading the display
–
Bluetooth enables operation of the instrument via Bluetooth.
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Changing the password for the operating system or the security password requires that
you enter the old password, the new password and that you confirm the new password.
To assign the password, press the "Accept" button. This action can not be undone!
Keep also in mind, that security settings are never reset, even if you perform a factory
preset.
► To access this dialog, press the SETUP or MENU key and select "Protection " >
"Security".
The "Security" dialog comprises the parameters for configuring the passwords, as
well as the security settings of the mass storage and the LAN services.
The settings in this dialog will not be assigned until you enter the Security Password
and confirm with the Accept button.
User Name
Indicates the user name used for access to the Linux operating system.
The user name and password are required for remote access to the instrument via
VNC, FTP or SAMBA.
Change User Password
Allows you to change and confirm the user password.
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Old Password ← Change User Password
Enters the current user password. The default password is "instrument".
Note: It is highly recommended to change the default user password before connecting the instrument to the network.
New Password ← Change User Password
Enters the new user password.
Confirm Password ← Change User Password
Confirms the new user password by reperating.
Note: The new password will not be assigned until you select the Change Password
button.
Change Password ← Change User Password
Changes the user password accordingly.
Note: Keep in mind, that a changed password is never reset, even if you perform a
factory preset.
Change Security Password
Enables you to change and confirm the security password.
Old Password ← Change Security Password
Enters the currently used security password. The default password is '123456'.
Note: It is highly recommended to change the default security password before connecting the instrument to the network.
The security password is required when changing the status of the USB and LAN interface.
New Password ← Change Security Password
Enters the new security password.
The security password may contain decimal characters only.
Confirm Password ← Change Security Password
Confirms the new password by repeating.
Note: The new password will not be assigned until you select the Change Password
button.
Change Password ← Change Security Password
Changes the password accordingly.
Note: Keep in mind, that a changed password is never reset, even if you perform a
factory preset.
LAN Services
Opens the "LAN Services" dialog for individually enabling or disabling the available
LAN interface services.
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Enable LAN Interface ← LAN Services
Enables the LAN interface in general, and thus provides remote access via all
unlocked services.
Note: The activated LAN services will not be assigned until you enter the Security
Password and confirm with Accept.
Enable LAN Services individually ← LAN Services
Enables or disables the following interface services individually.
"SCPI over LAN"
activates access over LAN to remotely control the instrument using
SCPI (Standard Commands for Programmable Instruments) commands.
"VNC"
activates access via VNC (Virtual Network Computing) interface, a
graphical desktop sharing system that uses RFB protocol to remotely
control the instrument.
"SSH"
activates access via SSH (Secure Shell), a network protocol for
secure data communication.
"HTTP"
activates access via HTTP (Hyper Text Transfer Protocol), the application protocol for hypermedia information systems.
"FTP"
activates access via FTP (File Transfer Protocol), used to transfer
files from a host to the instrument and vice versa.
"SMB (Samba)"
activates access to SMB (Server Message Block), used for providing
shared access to files, printers and serial ports of a network.
"Avahi (Zeroconf)"
activates Avahi, a service for automatic configuration of the instrument in a network environment.
"Software Update"
allows updating the instrument firmware via the LAN interface.
For more information on this topic see the release notes of the instrument, provided on the Internet at the download site or the Rohde &
Schwarz Signal Generator home page.
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USB Storage
Activates the access to external USB storage media.
This setting has no effect on a mouse or a keyboard, connected via USB.
Note: The setting will not be assigned until you enter the Security Password and confirm with Accept.
Write Nonvolatile Memory
Acitivates write protection on the file system to prevent modification or erasure of valuable data.
Note: The setting will not be assigned until you enter the Security Password, confirm
with Accept, and reboot the instrument.
Annotation Frequency
Enables/disables the display of the currently used frequency in the header of the
instrument.
Note: The setting will not be assigned until you enter the Security Password and confirm with Accept.
Remote command:
:DISPlay:ANNotation:FREQuency on page 244
Annotation Amplitude
Enables/disables the display of the currently selected level in the header of the instrument.
Note: The setting will not be assigned until you enter the Security Password and confirm with Accept.
Remote command:
:DISPlay:ANNotation:AMPLitude on page 244
User Interface
Allows you to lock the manual of the controls of the instrument, and to hide even the
entire display.
The setting requires the entry of the security password 123456 and is only accepted
after the "Accept" button is pressed.
Tip: Section "Enabling a locked user interface for manual operation" on page 104
describes how you can unlock the control elements and the user interface.
"Enabled"
Enables the display and all controls for the manual operation of the
instrument.
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"Display only"
Locks the manual operation of the instrument. The display on the
screen remains and shows the current settings and changes.
This security feature protects the instrument against unauthorized
access, but still shows the current settings and processes, for example when you operate the instrument via remote control.
The function disables:
● the keys at the front panel of the instrument
● the external mouse and keyboard
The instrument indicates the locked controls by a padlock
in the taskbar.
"Disabled"
softkey
Locks the display and all controls for the manual operation of the
instrument.
This security feature protects the instrument against unauthorized
reading and access, for example when you operate the instrument via
remote control.
The function disables:
● the display
● the keys at the front panel of the instrument
● the external mouse and keyboard
The screen shuts off and shows a padlock instead.
Remote command:
:SYSTem:ULOCk on page 351
:SYSTem:DLOCk on page 350
:SYSTem:KLOCk on page 350
Enabling a locked user interface for manual operation
To unlock the user interface for manual operation you have the following options:
● On the instrument's keypad or external keyboard, enter the security password
123456.
Even if you press any key, the instrument prompts you to enter the security password for unlocking.
●
Note The character of the first key you pressed is immediately added in the input
field. Prior to inserting the password delete this entry.
In remote control mode, send the command SYST:ULOC ENABled to release all
locks at once.
Alternatively, you can use the command SYST:KLOC OFF to unlock the keyboard,
or SYST:DLOC OFF to release the display.
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Via remote control, there is no password required.
Remote command:
:SYSTem:ULOCk on page 351
:SYSTem:DLOCk on page 350
:SYSTem:KLOCk on page 350
Security Password
Enters the password that is required to enable or to disable the settings protected by a
security password. Default is '123456'.
Note: It is highly recommended that you to change the default security password
before connecting the instrument to the network.
All settings are only accepted after the "Accept" button is pressed.
Accept
Applies the modified settings, provided the security password is entered correctly.
Note: This action can not be undone. Keep in mind, that a changed password is never
reset, even if you perform a factory preset.
Bluetooth Pin
Sets the Bluetooth pin of an external Bluetooth device. The pin is required to enable
remote control via an external Bluetooth device.
Requires a Bluetooth adapter (recommended extra, see data sheet) .
5.2.3.16
Save/Recall
The "Save/Recall" submenu can also be called up with the FILE key and is therefore
described in the section of this key (see Chapter 5.2.8, "Storing and Loading Instrument Data - File Key", on page 111).
5.2.3.17
Factory Preset
The "Factory Preset" dialog provides a function to reset the instrument's settings to
their factory state. This function is activated by pressing the "Execute Factory Preset"
button.
Factory Preset
Reset the instrument's settings to their factory state.
Note: "Factory Preset" resets the "Remote Channel" and network settings to the
default values.
Executing "Factory Preset" via remote control terminates the connection to the instrument, if these settings had been configured to values different to the default ones.
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The factory preset function resets nearly all instrument settings. In addition to the regular preset by means of the PRESET key, a "Factory Preset" resets also the following
values:
● Reference frequency settings ("Ref Oscillator" menu)
● Power on settings ("Level/EMF" menu)
● Network settings including hostname ("Setup" menu)
● Remote channel settings including GPIB address ("Setup" menu)
● Start/Stop display update ("Setup" menu)
● Display and keyboard settings ("Setup" menu).
To maintain security, password settings and all settings protected by these passwords
like disabled USB and LAN connections are not changed.
Not affected by the "Factory Preset" are also user data, lists or instrument settings
files, created for example by means of the Save/Recall function.
Remote command:
:SYSTem:FPReset on page 239
5.2.3.18
Help
The "Help" dialog offers comprehensive online help for the R&S SMC. A desired topic
can be selected via the table of contents (select "Manual") or the index (select "Index").
For context-sensitive information about a marked parameter, press the HELP key. For
a description of the "Help" menu, refer to the section covering to the HELP key (see
Chapter 5.2.7, "Help System - Help Key", on page 110).
5.2.4 Switching to Manual Control - Local Key
The local key switches from remote control to manual control (local state).
In remote control mode the instrument indicates the remote state in the display header.
The rest of the display remains unchanged and shows the current instrument status,
that means the status which exists under the remote control settings. The instrument
can be operated (for example dialogs can be opened). However, it is not possible to
enter or change values.
The status message additionally indicates whether the LOCAL key is disabled or
enabled.
The following states are indicated:
●
"REMOTE"
The LOCAL key switches the instrument from remote control to manual control.
The current command must be fully processed before the mode is switched, otherwise the instrument switches immediately back to remote control.
●
"REM-LLO"
The LOCAL key is locked, inititated by the &LLO (local lockout) command. The
instrument can be switched from remote state to local state only via remote control,
for example with &GTR or the Visual Basic command CALL IBLOC
(generator%). The LOCAL key has previously been locked by the remote command &LLO.
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When switching from remote to manual control, the display update function is automatically deactivated ("SETUP" > "Start/Stop Display Update" > "Off").
5.2.5 Generating a Hard Copy of the Display
The save/recall function enables you to store the settings in a file. In addition, you can
create a hard copy of the current display to save the most important settings of a performed signal generation in an image file.
5.2.5.1
Hard Copy Settings
Creating a hardcopy of the display requires that you have an external keyboard connected to the instrument.
► To access the dialog, use the key combination CTRL+Z, or CTRL+Y depending on
the used keyboard settings.
The dialog contains the parameters for configuring the output format and location
of a hardcopy.
The remote commands required to define the hard copy settings are described in
Chapter 7.8, "HCOPy Subsystem", on page 248.
Destination
Indicates that the hardcopy is stored in a file (see also " File Options " on page 108).
Remote command:
:HCOPy:DEVice on page 249
Options
Opens the "Hardcopy Options" dialog for configuring the corresponding parameters
(see " File Options " on page 108.
Remote command:
n.a.
File
Some configuration parameters are already offered in the Hardcopy dialog. All configuration parameters are available in " File Options " on page 108.
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Automatic Naming
Activates automatic generation of the file name. Automatic naming is configured in the
"Options…" sub dialog , see " File Options " on page 108.
Remote command:
:HCOPy:FILE[:NAME]:AUTO:STATe on page 254
File Info
Indicates the file name. The file name can be entered either manually via the file manager (button "File…") or generated automatically (Automatic naming checkbox). Automatic naming is configured in the "Options…" submenu.
Remote command:
:HCOPy:FILE[:NAME] on page 250
:HCOPy:FILE[:NAME]:AUTO:FILE? on page 251
5.2.5.2
Hardcopy Options
This section describes the "Hardcopy Options" dialog.
File Options
Dialog for setting the file parameters.
"Format"
Selects the output file format, for example *.bmp,
*.jpg*.xpm*.png.
Remote command:
:HCOPy:IMAGe:FORMat on page 254
:HCOPy:DEVice:LANGuage on page 249
"Automatic
Naming"
If enabled, creates the output filenames automatically according to
rules following the activated components.
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"Path..."
Selects the directory.
Note: To select the destination path, you have to specify a file name
as well. Otherwise an error message is displayed and the selection is
canceled.
Directory, path and file name are displayed in the infoline right to the
"Path" button.
Remote command:
:HCOPy:FILE[:NAME]:AUTO:DIRectory on page 250
:HCOPy:FILE[:NAME]:AUTO? on page 250
"Clear Path"
Deletes all image files with extensions bmp, img, png, xpm and csv
in the directory set for automatic naming.
Before deleting the image files a warning message is displayed
requiring the confirmation.
Remote command:
:HCOPy:FILE[:NAME]:AUTO:DIRectory:CLEar on page 251
"Prefix, Year,
Month, Day"
Determines the rules for "Automatic Naming".
Per default, the automatically generated file name is composed of:
<Path>/<Prefix><YYYY><MM><DD><Number>.<Format>, where
Y, M and D mean Year, Month, Day; Number is the "Current Auto
Number".
You can deactivate/activate each component separately.
The "Resulting File Name" indicates the current file name syntax.
Remote command:
:HCOPy:FILE[:NAME]:AUTO[:FILE]:PREFix:STATe on page 253
:HCOPy:FILE[:NAME]:AUTO[:FILE]:PREFix on page 253
:HCOPy:FILE[:NAME]:AUTO[:FILE]:YEAR:STATe on page 254
:HCOPy:FILE[:NAME]:AUTO[:FILE]:MONTh:STATe on page 252
:HCOPy:FILE[:NAME]:AUTO[:FILE]:DAY:STATe on page 252
"Current Auto
Number"
Indicates the number which is used in the automatically generated file
name.
Note: When initially switching on the instrument the number is reset
to the lowest possible value. Starting with number 0 the output directory is scanned for already existing files. As long as files with the
same name are existing the number is increased by 1. The number is
automatically set so that the resulting file name will be unique within
the selected path. The current number is not in the save/recall file but
will be temporarily stored within the database. At following save operations the number is increased.
Remote command:
:HCOPy:FILE[:NAME]:AUTO[:FILE]:NUMBer? on page 253
"Resulting File
Name"
Indicates the automatically generated file name.
Remote command:
:HCOPy:FILE[:NAME]:AUTO:FILE? on page 251
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Save
Stores the hardcopy.
Remote command:
:HCOPy[:EXECute] on page 249
5.2.6 Messages - Info Key
The INFO key opens a window containing a detailed description of every message displayed in the info bar, see Chapter 4.2.3, "Info Window", on page 59 and Chapter 9,
"Status Information, Error Messages and Troubleshooting", on page 372.
5.2.7 Help System - Help Key
The HELP key opens a browser window containing a context-sensitive description of
the highlighted parameter.
The context-sensitive page which is opened with the HELP key is part of a comprehensive help system. It is possible to move from this context-sensitive page to any page of
the help system. The following navigation aids are available:
●
Internal links in the text
They open pages which are directly linked to the described function. In this way it
is possible, for example, to call up the description of the GPIB command for any
particular function.
●
Back
The "Back" button calls up the page last viewed.
●
Contents in the navigation panel
The contents list is used to open the individual help pages. It has a hierarchical
structure. The highlighted line indicates where the currently displayed page is
within the contents list.
●
Index in the navigation panel
The index is used to call up all pages which contain the selected entry. The index
has an alphabetical structure and also contains all GPIB commands.
●
Find
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The find function allows you to look for freely selectable terms in all help pages. A
list of the pages containing the entered term is displayed as the search result. The
search can be limited to words in the page title to increase the number of hits.
5.2.8 Storing and Loading Instrument Data - File Key
The R&S SMC allows complete instrument settings to be stored in files either on the
internal flash memory or on external USB memory devices.
Defined and complex instrument settings can then be reproduced at any time by loading this data. If required, these settings can be loaded to various signal generators.
The corresponding menu is available under "Save/Recall" in the "Setup" menu. The
instrument settings are saved in files which can be stored in data directories.
Additionally there are intermediate memories in which the current instrument setting
can be stored and then called up again by just pressing a key. This provides fast
switching between different instrument settings.
Only settings which differ from the preset values and configuration data for the operating elements (e.g. window positions) are stored. As a result the files remain relatively
small. Furthermore, instrument settings can easily be transferred between different
equipped signal generators since the files contain only relevant information. When loaded, the referenced settings are implemented and all non-referenced parameters are
set to the associated preset values.
If list data is part of the instrument settings, e.g. a list of user correction data, a reference to this list is stored, not the list itself. The list is reactivated when the associated
settings are loaded, but the list may have been modified or deleted in the meantime or
may not be available on a different instrument. If the list has been modified, the new
entries will be used. An error message appears if an attempt is made to access a nonexisting list or to activate settings which are not supported by the instrument.
●
Network settings and remote settings are not saved and restored.
●
Lists are stored and loaded in the appropriate menus. For example, the user correction data list is created and stored in the "User Correction" menu.
When loading an instrument setting, it is possible to select whether the current frequency and level setting is to be retained or whether the stored settings are to be activated. It is possible to delete stored instrument settings. A file can be copied by loading
it with "Recall" and then storing it under a new name.
Settings can be transferred easily between instruments with different equipment
options and/or firmware versions because only the settings which differ from the preset
values are affected. When settings are loaded, only those which are possible on the
instrument are implemented. Error messages indicate the settings which cannot be
implemented.
The stored file is transferred from one instrument to another using the memory stick.
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General file management functions such as copying and moving data are available in
the "File Manager" dialog.
5.2.8.1
Save/Recall Menu
The settings available in the File menu "Save/Recall" depend on the operation selected
under "Select Operation".
For more information, see Chapter 4.7.1, "File Select Dialog", on page 73.
Select Operation
Selects the file function.
Accesses the settings for storing ("Save") and loading ("Recall") of the instrument settings.
5.2.8.2
"Save…"
Calls the menu for storing the current instrument setting (see Chapter 5.2.8.2, "Storing Instrument Settings", on page 112).
"Recall..."
Calls the menu for calling up a stored instrument setting (see Chapter 5.2.8.3, "Loading Instrument Settings", on page 113).
Storing Instrument Settings
If "Save" is selected under "Select Operation", the File menu provides options for storing the current instrument setting in a file.
Recent files
Displays the files last used.
Directory, File List and File Name
Note:
You access this generic standard function each time you perform one of the following:
● store or load (settings) files
● define a folder these files are to be stored in or
● navigate through the file system.
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The name of the dialog is context sensitive but the provided functions are self-explanatory and very similar.
With the provided settings, you can perform the following:
● to navigate through the file system, use the directory tree
● to load and store files, use the dedicated functions "Select", "Save" and Recent
files
● to perform standard file management functions, like create new directories, move,
copy, delete files and/or directories, use the standard "File Manager" function (see
" File Manager" on page 113).
Remote command:
to list all files in a directory:
:MMEMory:CDIRectory on page 260
:MMEMory:CATalog? on page 259
[:SOURce]:CORRection:CSET:CATalog? on page 280
Save
Stores the current instrument settings under the specified path.
Remote command:
*SAV on page 237
:MMEMory:STORe:STATe on page 264
Save Immediate x
Stores the current instrument setting in one of the three intermediate memories.
These instrument settings are retained until a different instrument setting is stored in
the intermediate memory. When the instrument is switched off, the contents of the
intermediate memories are retained.
Remote command:
*SAV on page 237
File Manager
Accesses the "File Manager" dialog, see Chapter 5.2.8.4, "File Manager",
on page 115.
Remote command:
n.a.
5.2.8.3
Loading Instrument Settings
If "Recall" is selected under "Select Operation", the "File" menu provides options for
loading complete instrument settings. Here it is possible to select whether the current
or stored frequency and level settings are to be used.
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Recent files
Displays the files last used.
Directory, File List and File Name
Note:
You access this generic standard function each time you perform one of the following:
● store or load (settings) files
● define a folder these files are to be stored in or
● navigate through the file system.
The name of the dialog is context sensitive but the provided functions are self-explanatory and very similar.
With the provided settings, you can perform the following:
● to navigate through the file system, use the directory tree
● to load and store files, use the dedicated functions "Select", "Save" and Recent
files
● to perform standard file management functions, like create new directories, move,
copy, delete files and/or directories, use the standard "File Manager" function (see
" File Manager" on page 113).
Remote command:
to list all files in a directory:
:MMEMory:CDIRectory on page 260
:MMEMory:CATalog? on page 259
[:SOURce]:CORRection:CSET:CATalog? on page 280
Exclude Frequency
The current frequency is retained when a stored instrument setting is loaded.
Remote command:
[:SOURce<hw>]:FREQuency[:CW|FIXed]:RCL on page 293
Exclude Level
The current level is retained when a stored instrument setting is loaded.
Remote command:
[:SOURce<hw>]:POWer[:LEVel][:IMMediate]:RCL on page 316
Recall
Load the selected configuration.
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If an instrument setting in which a sweep was activated is stored, the sweep is started
when the recall command is called.
If an instrument setting which accesses lists is stored, this list is also loaded.
If the list has been deleted in the meantime, an error message appears when the
instrument setting is loaded. If the list has been overwritten in the meantime, the new
entries will be used.
Remote command:
:MMEMory:LOAD:STATe on page 263
*RCL on page 236
Recall Immediate x
Loads the selected configuration from one of the three intermediate memories.
If an instrument setting in which a sweep was activated is stored, the sweep is started
when the recall command is called.
If an instrument setting which accesses lists is stored, this list is also loaded.
If the list has been deleted in the meantime, an error message appears when the
instrument setting is loaded. If the list has been overwritten in the meantime, the new
entries will be used.
A message appears if no instrument configuration is stored in this memory.
Remote command:
*RCL on page 236
File Manager
Accesses the "File Manager" dialog, see Chapter 5.2.8.4, "File Manager",
on page 115.
Remote command:
n.a.
5.2.8.4
File Manager
The "File Manager" is a tool very similar to a standard Windows Explorer and helps
you manage mass storage media and files stored on the R&S SMC.
You can perform the following tasks:
●
Copying multiple files from disk to other media and vice versa, see Chapter 5.2.8.5,
"Accessing the File System of the Instrument and Transferring Files from and to
the Instrument", on page 117
●
Copying files into another directory, see Copy and Paste
●
Renaming and deleting files, see Rename and Delete
●
Creating new directories on the follwoing drives:
–
hard disk
–
internal flash memory
–
memory stick
See Create New Directory
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General Instrument Settings
For more information, see Chapter 4.7.2, "File Manager", on page 74.
File Type
Selects the file type to be listed. If you select a file type with a specific file extension,
only files with this extension are listed in the directory.
Remote command:
n.a.
Directory and File Name
Selects the directory in which the file to be deleted or copied is located. The dialog lists
all files in this directory. Selected files are highlighted. The path is indicated above the
directory window.
Unlike the "Save/Recall" and "File Select" dialogs, the "File Manager" displays the full
file names including extensions.
Remote command:
:MMEMory:CDIRectory on page 260
Cut
Cuts the selected file. It can be pasted into a different directory using the "Paste" button.
Remote command:
:MMEMory:DELete on page 262
Copy
Copies the selected file. It can be pasted into a different or the same directory using
the "Paste" button. When pasting the file into the same directory file name
Copy of <file name> is given automatically. When pasting the file into a different
directory, the original file name is kept.
Remote command:
:MMEMory:COPY on page 260
Paste
Pastes the file that has been copied or cut before.
Remote command:
n.a.
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General Instrument Settings
Rename
Renames the selected file or directory. The new name can be entered in the "New Filename" dialog.
Remote command:
:MMEMory:MOVE on page 263
Delete
Deletes the selected file. Before the file is deleted, a message appears prompting the
user to confirm deletion of the file.
Remote command:
:MMEMory:DELete on page 262
Create New Directory
Creates a new directory. The name of the new directory can be entered in the "New
Directory" dialog.
Note: When the subdirectory is entered, it is possible to enter an absolute path name
(e.g. /var/MEAS) or the path relative to the current directory (e.g. ../MEAS).
The directory is created as a subdirectory in the selected level.
Remote command:
:MMEMory:MDIRectory on page 263
5.2.8.5
Accessing the File System of the Instrument and Transferring Files from and to
the Instrument
To access files and the file system of the instrument or to use the general file management functions such as copying and moving data, use the standard "File Manager" dialog.
To transfer files from and to the instruments or to exchange files, use one of the following alternatives:
●
Connect a memory stick to one of the USB interfaces.
The instrument recognizes automatically a connected memory stick.
●
Connect the instrument to a LAN.
For information on how to set up a LAN connection, refer to Chapter 2.6, "Setting
Up a Network (LAN) Connection", on page 34.
An instrument connected to a LAN supports the standard file transfer methods from
a remote client:
–
FTP (file transfer protocol)
see "To access the file system of the R&S SMC via ftp" on page 118
–
File sharing according to the SAMBA/SMB (server message block) protocol
see "To access the file system of the R&S SMC via SMB (Samba)"
on page 119
Both file transfer methods access the folder /var/user/share.
This section provides an introduction to this topic. For comprehensive information, refer
to the Application Note 1GP72 "Connectivity of Rohde&Schwarz Signal Generators".
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To access the file system of the R&S SMC via ftp
If the R&S SMC is connected to a LAN and the required configurations are completed,
you can use File Transfer Protocol (ftp) to access the file system and to transfer files
from and to the instrument.
1. Connect the instrument and the remote PC to a LAN.
2. Find out the "IP Address" of the instrument:
a) Select "Setup > Environment > Network Settings".
b) Write down the "IP Address" of the instrument, e.g. 10.113.10.105.
3. On the remote PC, start the Windows Explorer.
4. In the address field, enter ftp://<"IP Address" of the Instrument>, e.g.
ftp://10.113.10.105
A log on dialog opens and requests a password.
Tip: Default password. The FTP file access use the user instrument with default
password instrument.
It is highly recommended that you change the user password in the "Security" dialog before connecting the instrument to the network!
See Chapter 5.2.3.15, "Security", on page 99.
5. Enter the password to access the /var/user/share directory.
You can access the files in the /var/user/ directory, perform standard function
like creating directory, etc.
6. Open the /var/user/share directory and create a new directory, e.g. testftp.
7. On the instrument, press the FILE key and open the /var/user/share directory.
The dialog displays the testftp dircetory.
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To access the file system of the R&S SMC via SMB (Samba)
The SMB (Samba) protocol is an alternative way to access the file system of the instrument form a remote PC, if both the instrument and the PC are connected to a LAN.
1. Connect the instrument and the remote PC to a LAN.
2. Find out the "IP Address" of the instrument:
a) Select "Setup > Environment > Network Settings".
b) Write down the "IP Address" of the instrument, e.g. 10.113.10.105.
3. On the remote PC, start the Windows Explorer and open the "Map Network Drive"
dialog.
a) Select a valid "Drive", e.g. W.
b) In the "Folder" field, enter:
//<"IP Address" of the Instrument>/share or
//<"Hostname" of the Instrument>/share, e.g. //10.113.10.105/share
c) Select "Finish".
A log on dialog opens and requests an user name and a password.
4. Enter the user name and the password of your instrument.
The default user name and password is instrument.
Tip: Default password. The SAMBA/SMB file access use the user instrument with
default password instrument.
It is highly recommended that you change the user password in the "Security" dialog before connecting the instrument to the network!
See Chapter 5.2.3.15, "Security", on page 99.
The /var/user/share directory of the instrument is mapped to and displayed as
a network drive of the remote PC.
You can access the files in this directory, perform standard function like creating
directory, storing files, etc.
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RF Block
5.3 RF Block
5.3.1 Overview of RF Signal
Settings for the RF output signal and analog modulation are made under "RF Signal".
These settings can be accessed in the block diagram by way of the "RF" function
block, or by means of the menu with the same name which is opened using the MENU
key.
The function block is available for the basic unit (R&S SMC + frequency option) without
additional equipment options.
5.3.1.1
RF Output
Basically, the RF output signal is deactivated. The previous state is restored, when the
signal is reactivated.
Activating RF Signal Output
If the settings for the RF signal are done, you can activate RF signal output via:
●
the RF ON/OFF key (the current entry focus is irrelevant)
●
the checkbox in the "RF" block (see "RF On" on page 120)
●
the "RF Frequency > RF ON" checkbox in the RF block (see "RF Output State"
on page 121).
To open the menu, select the "Configure" button in the RF block.
The current state of the RF output (activated and deactivated) is indicated in the block
diagram by means of the different block color and the status of the "On" checkbox.
An active sweep is also indicated in the block.
To query the impedance of the RF outputs, use the command :OUTPut<hw>:
IMPedance? on page 266.
RF On
Activates RF signal output.
This function corresponds to the RF ON /OFF key.
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RF Block
See also Chapter 5.3.1.1, "RF Output", on page 120.
Remote command:
:OUTPut<hw>[:STATe] on page 267
RF Output State
Activates the RF output signal by selecting the RF checkbox in the "Configure" dialog
of the "RF" block.
Remote command:
:OUTPut<hw>[:STATe] on page 267
5.3.1.2
RF Signal Modes and Characteristics
The CW and Sweep modes are available for generating the RF signal.
●
CW
The RF signal is generated with the set frequency and level. This is the default
mode.
●
Sweep
The RF signal is generated as a sweep with the set parameters.
It is not possible to activate frequency, level and LF sweep simultaneously.
Instruments connected downstream can be taken into consideration when setting the
frequency and level by entering a frequency and/or level offset.
Automatic level control ("ALC") ensures maximum level accuracy.
User-specific lists which contain level correction values for any frequency range ("User
Correction") can be created to, for example, compensate the cable attenuation in a test
assembly setup.
The R&S SMC generates the RF signal in unmodulated or analog form. The signal
generator is equipped therefore with the following sources for analog modulations:
●
an internal LF generator
●
an internal pulse generator
●
the external modulation inputs MOD EXT and PULSE EXT.
An external trigger signal for the sweeps can be provided at the INST TRIG input.
The input REF IN is used to input an external instrument reference, and the output
REF OUT serves as the output of the reference frequency (internal or external).
5.3.2 RF Frequency
The value of the RF frequency is displayed in the header of the display ("Freq"). This
field provides the direct input of the RF frequency. Alternatively, you can enter the RF
frequency in the "Frequency/Phase" dialog.
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RF Block
Note that the displayed RF frequency in the header, and the RF output frequency,
entered in the "Frequency/Phase" dialog can be different, as explained in the following
section.
5.3.2.1
RF Frequency vs. RF Output Frequency
If you are working with a downstream instrument, e.g. a mixer or a frequency multiplier,
you can enter the related parameter value in the frequency settings dialog ("Offset",
"Multiplier").
The generator includes these parameters and displays the result in the "Freq" field in
the status bar, as if the downstream instrument and the generator were one unit. This
displayed frequency corresponds to the value at the RF output of the downstream
instrument. However, the frequency provided at the RF output of the signal generator
corresponds to the frequency value set in the "Frequency/Phase" dialog.
The instrument activates the "Freq Offset" icon in the status bar, when a frequency offset or multiplication factor is set.
The correlation between the RF frequency, the RF output frequency and the frequency
offset is as follows:
"Freq" (in header) = "RF output frequency" (Frequency in dialog) * "Multiplier" factor
(Multiplier in dialog) + "Freq offset" (Offset in dialog)
5.3.2.2
Setting the RF Frequency
To change the RF frequency, press the FREQ key and enter the desired frequency.
Changes to the RF frequency have an immediate effect (without confirmation with the
ENTER key) on the output signal.
RF Freq
Enters the RF frequency, considering the frequency offset.
Note: The SCPI command sets the level of the "Freq" display, that means an entered
frequency offset and multiplier factor are considered in the frequency value.
Remote command:
[:SOURce<hw>]:FREQuency[:CW|FIXed] on page 292
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RF Block
5.3.2.3
RF Frequency Dialog
The combined "RF Frequency / Phase..." dialog contains the parameters required for
configuring the frequency and settings like a frequency offset, or a multiplier factor of
an externally connected multiplier, see Chapter 5.3.2.4, "Frequency Settings",
on page 123.
Furthermore, the dialog provides additional settings parameters which are described
in:
●
5.3.2.4
Chapter 5.3.3, "Phase", on page 125
Frequency Settings
Access:
► Select "RF > config... > RF Frequency > Frequency/Phase".
In the upper section of the combined "RF Frequency / Phase ..." settings dialog,
you can configure the frequency of the RF signal.
The remote commands required to define the settings are described in Chapter 7.13.4,
"SOURce:FREQuency Subsystem", on page 291.
Frequency
Sets the RF frequency of the RF output connector. The frequency entered and displayed here corresponds to the frequency at the RF output, that means any offset entry
is not considered.
Note: Suppressed values in the status bar
If the instrument displays asterisks
instead of the values, the display has been
disabled for security reasons, see Annotation Frequency and Annotation Amplitude.
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RF Block
Remote command:
[:SOURce<hw>]:FREQuency[:CW|FIXed] on page 292
Note: This command sets the frequency of the "FREQ" display, that is the frequency
containing offset.
Offset
Sets the frequency offset relative to the RF frequency. The frequency offset of a downstream instrument (for example a mixer) is entered.
The entry does not change the value of the RF frequency at the RF output. It only
changes the RF frequency displayed in the display header. The value of the RF frequency in the header corresponds to the frequency at the output of the downstream
instrument, see also Chapter 5.3.2.1, "RF Frequency vs. RF Output Frequency",
on page 122.
Remote command:
[:SOURce<hw>]:FREQuency:OFFSet on page 295
Multiplier
Sets the multiplication factor for the RF frequency.
In the frequency field of the status bar, the instrument adjusts its frequency display
according to the set multiplication factor. This frequency value shows the frequency at
the output of the downstream multiplier. The entry does not change the RF frequency
at the RF output of the R&S SMC, see also Chapter 5.3.2.1, "RF Frequency vs. RF
Output Frequency", on page 122.
Remote command:
[:SOURce<hw>]:FREQuency:MULTiplier on page 294
5.3.2.5
User Variation Settings
Access:
► Select "RF > config... > RF Frequency > Frequency/Phase".
The combined "RF Frequency / Phase ..." settings dialog contains the parameters
determine the step size for adjusting the frequency with the rotary knob.
Variation Active
Activates the user-defined step width used when varying the frequency value with the
rotary knob.
"ON"
The frequency value set with the rotary knob is varied using the userdefined step width which is entered under "Variation Step".
"OFF"
The frequency value set with the rotary knob is varied in steps of one
unit at the cursor position (standard operating mode).
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RF Block
Remote command:
[:SOURce<hw>]:FREQuency:STEP:MODE on page 297
Variation Step
Sets the user-defined step width. This step width is used when entering the RF frequency using the rotary knob. Frequency variation with this step width must also be
activated with "Variation Active".
Remote command:
[:SOURce<hw>]:FREQuency:STEP[:INCRement] on page 297
5.3.3 Phase
The phase of the RF output signal can be changed in the "Phase Settings" section of
the "RF Frequency/Phase" dialog.
5.3.3.1
Phase Settings
► To access the dialog for configuring the phase settings, perform one of the following:
●
●
Select "RF > config... > RF Frequency > Frequency/Phase".
Press the MENU key and select "RF > RF Frequency > Frequency/Phase".
The combined "RF Frequency / Phase ..." settings dialog contains the parameters
to configure the phase settings of the RF signal.
The remote commands required to define the settings are described in Chapter 7.13.9,
"SOURce:PHASe Subsystem", on page 309.
Delta Phase
Sets the phase of the RF signal. The current phase of the signal is used as the reference. This function allows, for example, the phase of the output signal to be synchronized with the phase of a signal from a second signal generator.
Remote command:
[:SOURce<hw>]:PHASe on page 309
Reset Delta Phase Display
Resets delta phase value. The set phase is adopted as the new current phase, i.e. the
delta phase value is reset to 0.
Remote command:
[:SOURce<hw>]:PHASe:REFerence on page 309
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RF Block
5.3.4 Reference Oscillator
The R&S SMC is equipped with an internal reference oscillator that generates a reference frequency of 10 MHz. It is used as internal reference source for the synthesizer
and the local oscillator. Alternatively, you can apply an external reference signal.
Regardless of the used reference source (internal or external), the R&S SMC always
provides the configured reference frequency at the output. You can use it, for example
to synchronize several interconnected instruments.
The settings of the reference oscillator are not affected by an instrument preset ("PRESET" key).
The following examples briefly explain the possible test setups and the settings to be
considered.
●
Internal fref = 10 MHz (10 MHz REF OUT)
Figure 5-1: Synchronizing a subsequent instrument using the internal 10 MHz reference signal of
the R&S SMC
The internal reference oscillator supplies the reference frequency.
Settings:
–
●
Source: "Internal"
External fref = 10 MHz (10 MHz REF OUT)
If you have a clean external reference signal with 10 MHz frequency, you can
directly pass it to the output. The signal quality remains the same.
Figure 5-2: Synchronizing instruments by means of an externally applied reference signal having
10 MHz
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RF Block
Settings:
–
Source: "External"
–
External Reference Frequency: "10 MHz"
Set the additionally provided parameters, as for example the synchronization bandwidth according to the requirements of the application.
Input and output connectors of the reference frequency
The appropriate connectors are located at the rear panel, see "REF IN" on page 23
and "REF OUT" on page 23.
5.3.4.1
Reference Oscillator Settings
To access the settings dialog for configuring the reference signal, perform one of the
following:
●
In the block diagram, select "RF > config... > RF Frequency > Reference Oscillator"
●
Press the MENU key and select "RF > RF Frequency > Reference Oscillator"
●
Press the SETUP key and select "Setup > System > Reference Oscillator"
In the "Reference Oscillator Settings" dialog, you can select the signal source and frequency to be used as the reference frequency, and determine a user-defined adjustment value.
The remote commands required to define the reference oscillator settings are described in Chapter 7.13.13, "SOURce:ROSCillator Subsystem", on page 330.
Source
Selects the source of the reference frequency.
See Chapter 5.3.4, "Reference Oscillator", on page 126, which provides an overview of
the different test scenarios for configuring the reference frequency.
"Internal"
Uses the internal 10 MHz reference signal, either with the calibrated
or a user-defined adjustment value.
"External"
Uses an external reference signal.
The frequency of the external reference signal must be selected
under "External Reference Frequency" on page 128.
Remote command:
[:SOURce]:ROSCillator:SOURce on page 331
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RF Block
Deactivate RF Output (if external reference is missing)
Turns the RF output off when the external reference signal is selected, but no signal is
supplied.
This function prevents that no improper RF signal due to the missing external reference signal is used for measurements. A message indicates that the external signal is
missing and the RF output is deactivated.
This setting is not affected by a reset.
Remote command:
[:SOURce]:ROSCillator:EXTernal:RFOFf[:STATe] on page 330
External Reference Frequency
Indicates the frequency of the external reference signal.
Remote command:
[:SOURce]:ROSCillator:EXTernal:FREQuency on page 330
Adjustment Active
Selects the adjustment mode.
"OFF"
Uses the calibrated internal reference frequency.
"ON"
Allows you to apply a deviation to the internal reference frequency,
according to your requirements. To enter the value, use Adjustment
DAC Value.
Remote command:
[:SOURce]:ROSCillator[:INTernal]:ADJust[:STATe] on page 331
Adjustment DAC Value
Sets a user-defined deviation for the internal reference frequency. This value takes
effect when it is activated with Adjustment Active. "0" represents the calibrated state.
The setting range depends on the reference oscillator type and its factory calibration
value.
Note: A factory preset resets this setting to the calibration value of the instrument.
Remote command:
[:SOURce]:ROSCillator[:INTernal]:ADJust:VALue on page 331
5.3.5 RF Level
5.3.5.1
Overview of RF Level
Message "Level overrange/underrange"
If this message appears in the status line, the set level ("Level") is out of range (see
data sheet).
In this case, the signal level at the output can deviate from the set value.
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RF Block
The value of the RF level is displayed in the level field in the header of the display
("Level"). This field provides the direct input of the RF level value. Alternatively, you
can enter the level in the "Level/EMF/..." dialog.
Note that the displayed RF level in the header, and the RF output level, set in the
"Level/EMF" dialog can be different, as explained in the following section.
RF level vs. RF output level
If you are working with a downstream instrument, e.g. an attenuator or amplifier, you
can enter the related parameter value in the level settings dialog ("Offset").
The generator includes these parameters and displays the result in the "Level" field in
the status bar, as if the downstream instrument and the generator were one unit. This
displayed level value corresponds to the value at the RF output of the downstream
instrument. However, the level provided at the RF output of the signal generator corresponds to the level value set in the "Level/EMF/..." dialog.
The instrument activates the "Level Offset" icon in the status bar, when a level offset is
set.
The correlation is as follows:
"Level" (in header) = "RF output level" (Level in menu) + "Level offset" (Offset in menu)
The RF output is protected against overloading by an external signal applied to the RF
output (see Chapter 5.3.5.7, "Reverse Power Protection", on page 147).
Setting the RF level
To change the RF level, press the LEVEL key and enter the desired level. Changes to
the RF level have an immediate effect (without confirmation with the Enter key) on the
output signal.
RF Level
Enters the RF level, considering the level offset (see "RF level vs. RF output level"
on page 129).
dBm, dBµV, mV and µV can be used as the level units. The four unit keys are labeled
with these units.
Note: The SCPI command sets the level of the "Level" display, i.e. an entered level offset is considered in the level value.
Remote command:
[:SOURce<hw>]:POWer[:LEVel][:IMMediate][:AMPLitude] on page 315
5.3.5.2
RF Level Dialog
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RF Block
Access:
► Select "RF > config... > RF Level > Level/Attenuator".
The offset-free level, level offset and level limit are set in the top section of the dialog. The attenuator mode is set in the "Attenuator Settings" section.
In section "User Variation", you can determine the step size for adjusting the level
with the rotary knob (with "Variation Active On").
The power-on behavior of the instrument and the level display in the display
header are set in the "Power-On / EMF Settings" section (see Chapter 5.3.5.3,
"Power-On/EMF Settings", on page 133).
The remote commands required to define the settings are described in Chapter 7.13.11, "SOURce:POWer Subsystem", on page 312.
Level Settings
The offset-free level, attenuation mode, level offset and level limit are set in the top
section of the dialog.
RF Mode
Selects the level mode for signal output.
This function allows you, to optimize the RF output signal for applications, where
improved harmonic suppression or a low Signal-to-Noise ratio is required.
Note: The modes "Low Distortion" and "Low Noise", for improving harmonic suppression or the S/N ratio require that an attenuator is fitted.
"Normal"
The generator provides an RF output signal with high signal to noise
ratio as well as low distortion, according to the data sheet.
"LOW Noise"
This setting forces the generator to optimize the signal to noise ratio.
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RF Block
"LOW Distortion"
The generator reduces distortion (harmonics) of the RF signal.
Remote command:
[:SOURce<hw>]:POWer:LMODe on page 317
Amplitude
Sets the RF level of the RF output connector.
The level entered and displayed here corresponds to the level at the RF output, that
means any offset entry is not considered.
Note: Suppressed values in the status bar
instead of the values, the display has been
If the instrument displays asterisks
disabled for security reasons, see Annotation Frequency and Annotation Amplitude.
Remote command:
[:SOURce<hw>]:POWer:POWer on page 318
Note: The SCPI command [:SOURce<hw>]:POWer[:LEVel][:IMMediate][:
AMPLitude] sets the level of the "Level" display, that is the level containing offset.
Limit - RF Level
Sets an upper limit for the RF output power.
You can use it to protect your DUT from damage due to high input power. If you enter
an RF level above this value, the instrument limits the output power to this specified
value, and generates a warning message.
However, the level indication in the status bar is not affected.
Note: The value is not affected by an instrument preset (PRESET key), *RST and the
"Save/Recall" function. It is influenced only by the Factory Preset and the factory value
is equal to maximum level.
Remote command:
[:SOURce<hw>]:POWer:LIMit[:AMPLitude] on page 316
Offset (Level)
Sets the level offset relative to the RF level.
The level offset of a downstream instrument (for example an attenuator or amplifier) is
entered.
The entry does not change the value of the RF level at the RF output. It only changes
the RF level displayed in the display header. The value of the RF level in the header
corresponds to the level at the output of the downstream instrument.
Remote command:
[:SOURce<hw>]:POWer[:LEVel][:IMMediate]:OFFSet on page 315
Attenuator Settings
The attenuator mode is set in the Attenuator Settings section.
Attenuator Mode
Sets the attenuator mode at the RF output.
"Auto"
Standard mode.
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RF Block
"Fixed"
When this operating mode is switched on, the attenuator and the
relays are fixed in their current positions to provide level settings without interruption. The resulting variation range is defined and displayed under "Attenuator Fixed Range".
Note: The function is effective when automatic level control is activated ("ALC State = On").
If the normal variation range is overranged or underranged, level
errors increase considerably and the warning "Level under/overrange" appears in the info line. The spectral purity of the output signal
decreases with high attenuation.
Remote command:
:OUTPut<hw>:AMODe on page 266
Fixed Range (PEP) In
Displays the level range in which the level is set without interruption for the "Attenuator
Mode fixed" setting.
Remote command:
:OUTPut<hw>:AFIXed:RANGe:UPPer? on page 265
:OUTPut<hw>:AFIXed:RANGe:LOWer? on page 265
RF OFF Mode
Selects the attenuator mode, when the RF signal is switched off.
The setting of the RF OFF mode is not affected by an instrument preset (PRESET
key), *RST and the "Save/Recall" function. This parameter is influenced only by the
Factory Preset.
"Unchanged"
Freezes the setting of the attenuator when RF is switched off. The
attenuator is only activated when RF is switched on.
This setting is recommended if a constant VSWR (Voltage Standing
Wave Ratio) is required.
"Full Attenuation"
Sets attenuation to maximum when the RF signal is switched off. This
setting is recommended for applications that require a high level of
noise suppression.
Remote command:
[:SOURce<hw>]:POWer:ATTenuation:RFOFf:MODE on page 314
User Variation
If the level is set using the rotary knob, the step width is defined in the "User Variation"
section.
Variation Active
Activates the user-defined step width used when varying the level value with the rotary
knob.
"ON"
The level value set with the rotary knob is varied using the userdefined step width which is entered under "Variation Step".
"OFF"
The level value set with the rotary knob is varied in steps of one unit
at the cursor position (standard operating mode).
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Remote command:
[:SOURce<hw>]:POWer:STEP:MODE on page 322
Variation Step
Sets the user-defined step width for entering the RF level using the rotary knob. Level
variation with this step width must also be activated with "Variation Active".
Remote command:
[:SOURce<hw>]:POWer:STEP[:INCRement] on page 321
External Level Adjustment
The external level adjustment provides information about the data that has been used
for calibrating the RF level.
By default the instrument uses correction data obtained in the factory before delivery.
In exceptional cases, you can determine the calibration values with an R&S NRP
power sensor, and use these values for the external level correction. This feature is a
protected function (see Service Manual, chapter 2, "Adjustment").
Adjustment Data
Indicates what data has been used for level calibration.
Remote command:
:CALibration<hw>:LEVel:EXTern:DATA on page 241
5.3.5.3
Power-On/EMF Settings
The power-on behavior of the R&S SMC and the level display in the display header are
set in the "Power-On / EMF Settings" section of the "RF Level/EMF" dialog.
To open the "RF Level/EMF" dialog, select "RF > Configure > EMF" or use the MENU
key under "RF".
Power-On State - RF Signal
Selects the state which the RF output is to assume after the instrument is switched on.
"RF Off"
The output is deactivated when the instrument is switched on.
"Previous Setting"
When the instrument is switched on, the output assumes the same
state as it had when the instrument was switched off.
Remote command:
:OUTPut<hw>[:STATe]:PON on page 267
Display Level as Voltage of EMF - RF Level
Activates display of the signal level as voltage of the EMF (no-load voltage). If this setting is deactivated, the level is displayed as a voltage over a 50 Ohm load.
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Note: This setting is not affected by an instrument preset (PRESET key), *RST) or the
"Save/Recall" function. Only the Chapter 5.2.3.17, "Factory Preset", on page 105
resets the setting.
Remote command:
[:SOURce<hw>]:POWer:EMF:STATe on page 314
5.3.5.4
Automatic Level Control - ALC
Your signal generator is equipped with an automatic level control unit to obtain best RF
level accuracy.
Automatic Level Control (ALC) is an adaptive control system to stabilize the RF output
level. It continuously monitors the current level and adjusts it to keep a steady state
over temperature and time.
ALC is active in almost all applications by default. However, the Pulse Modulation
mode excludes ALC, as the control loop would detect incorrect values and result in
level deviations.
Also note that ALC may detect incorrect values in multi-transmitter test setups. If multiple generators are coupled, reverse power may affect the ALC readings. Based on
incorrect values, ALC would have an impact on the signal to intermodulation ratio.
ALC States
The following description basically explains the ALC states and their principle of operation. In particular ALC OFF (Sample & Hold) gives an overview on the function in
terms of the equipment of the generator.
The R&S SMC offers the ALC states:
●
AUTO
automatically adjusts the output level to the operating conditions.
●
On
enables ALC permanently, regardless of the currently selected mode.
●
Off
deactivates ALC.
The instrument switches to Sample & Hold (S&H) state, which still allows to maintain a constant output level.
The following section explains the functionality of "Sample & Hold", to provide an overview and to indicate what is to be considered. "On" and "Auto" require no additional
explanation. Furthermore, find the ALC state settings described in detail in State ALC .
ALC OFF (Sample & Hold)
In "S&H" mode, the signal generator switches for a short period of time into CW mode
and activates ALC. ALC adjusts the level to the set value and the generator holds the
value (freeze). Then, the generator switches ALC off again and back to the operating
mode.
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RF output behavior during Sample & Hold depends on the configuration of your instrument. Instruments equipped with...:
●
an electronic step attenuator
The level is decreased by 30 dB.
●
a mechanical step attenuator
The level control status is permanently displayed as a status message in the info line.
Automatic Level Control Settings
To open the "Automatic Level Control" dialog, select "RF" > "Configure" > "Automatic
Level Control" or use the MENU key under "RF".
The combined dialog "ALC / UCOR" is divided into the several sections and provides
access to the "Automatic Level Control" settings and to function "User Correction", see
Chapter 5.3.5.6, "User Correction", on page 140).
State - ALC
Activates/deactivates internal level control.
"Auto"
The instrument selects the most appropriate ALC mode automatically.
ALC is on in most operating conditions. Default state.
"On"
Activates ALC, regardless of the operating conditions.
"Off (Sample & Hold)"
Deactivates internal level control.
Sample & hold closes the level control loop at every frequency and
level change for a short period of time. The level control voltage is
sampled and then clamped.
Remote command:
[:SOURce<hw>]:POWer:ALC[:STATe] on page 313
Search Once - ALC
Forces the generator to execute level adjustment once, although the "Sample & Hold"
mode is active.
Remote command:
[:SOURce<hw>]:POWer:ALC:SONCe on page 313
5.3.5.5
NRP-Z Level Control
With the NRP-Z Level Control function, you can achieve a very stable and accurate RF
power supplied to your DUT. With the aid of a downstream control circuit, a CLPC
(Closed Loop Power Control), you can detect frequency response characteristics of the
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RF Block
used components, such as losses due to cables, modules or components like power
amplifiers, and compensate these effects accordingly.
Example: How to set up a closed loop power control
Figure 5-3: Example of a test setup with NRP-Z Level Control
As shown in the example, the sensor measures a proportional power in defined time
intervals, derivated from a coupler. It considers optionally given S-parameters and
returns the results to the generator. The signal generator compares the measured level
with the set value and adjusts its output level accordingly.
This allows you to control the external signal level continuously and reliably reach a
constant input level at the DUT in real time.
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Impact of the NRP-Z Level Control and the Operating Modes
Since the frequency and level of the RF output signal are continuously adjusted during
"NRP-Z Level Control", this operating mode interferes those with varying frequency
and level values.
The reason is, that the generator regularly transmits the output frequency to the connected R&S NRP-Zxx power sensor, which in turn requests the signal generator to
adjust the output level according to its measurement. In contrast to this real time control loop, for example the list operating mode already generates the RF output signal
on previously optimized frequency and level value pairs. In this case, the "NRP-Z Level
Control" as a second control loop would impact the already determined RF signal values and also considerably slow down the measurement. Similar impacts occur in
sweep mode, and also the "NRP-Z Power Viewer" and "NRP-Z Level Control" affect
each other's functionality.
Hence, the operating modes exclude each other as follows:
●
"NRP-Z Level Control" automatically disables NRP-Z Power Viewer, and vice
versa.
●
Activating the RF frequency sweep, RF level sweep or the list mode instantly deactivates a running "NRP-Z Level Control".
●
A running list or RF sweep mode blocks "NRP-Z Level Control". It can not be activated.
Also keep in mind that modulated signals may differ from CW signals regarding mean
power and peak power. This affects the operation of "NRP-Z Level Control".
NRP-Z Level Control Settings
► To access the dialog for configuring the level control settings, perform one of the
following:
●
●
Select "RF > config... > RF Level > NRP-Z Level Control".
Press the MENU key and select "RF > RF Level > NRP-Z Level Control".
The dialog contains all parameters for configuring the settings for level control test
setup.
The remote commands required to define these settings are described in Chapter 7.13.11, "SOURce:POWer Subsystem", on page 312
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RF Block
Sensor
Selects the R&S NRP-Z power sensor for power control.
Note: In remote control, the sensors are set up using the SENSe commands. The
remote measurement is triggered by the READ query which also provides the measurement results.
The software version of the connected power sensor can be retrieved by means of the
remote control command :SENS:POW:TYPE?.
Use the "Setup >" Chapter 5.2.3.5, "NRP-Z Info/Update", on page 86 dialog to update
the sensor software.
Remote command:
[:SOURce<hw>]:POWer:SPC:SELect on page 320
State
Activates power control using the selected sensor.
The control loop periodically adjusts the generator output. After switching off, the running loop is completed.
Remote command:
[:SOURce<hw>]:POWer:SPC:STATe on page 320
Measured Level
Indicates the current reading of the sensor.
Zero - Power Sensors
Activates the auto zero function.
Zeroing calibrates the external power sensor by adjusting its reading at zero signal
power. For this purpose, the RF power source must be switched off or disconnected
from the sensor. If a Rohde & Schwarz power sensor receives an input power during
the zeroing process, it aborts zeroing and generates an error message. Zeroing takes
a few seconds, depending on the sensor model. Refer to the documentation of your
power sensor for more information.
Tips for zeroing
When to perform zeroing:
● During warm up after switching on or connecting the instrument
● After a substantial change of the ambient temperature
● After fastening the power sensor module to an RF connector at high temperature
● After several hours of operation
● When low-power signals are to be measured, e.g. less than 10 dB above the lower
measurement limit.
● Switch off the RF power source for zeroing, but do not disconnect it from the power
sensor. This proceeding keeps the thermal equilibrium, and the zeroing process
also compensates the noise that superimposes the measured signal (e.g. from a
broadband amplifier).
Remote command:
:SENSe<ch>[:POWer]:ZERO on page 276
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RF Block
Target Level
Specifies the nominal level expected at the input of the sensor. The signal generator
adjusts the output power accordingly, in order to meet the target value at the sensor
input, and thus the power required at the DUT.
Remote command:
[:SOURce<hw>]:POWer:SPC:TARGet on page 320
Limit - RF Level
Sets an upper limit for the RF output power.
You can use it to protect your DUT from damage due to high input power. If you enter
an RF level above this value, the instrument limits the output power to this specified
value, and generates a warning message.
However, the level indication in the status bar is not affected.
Note: The value is not affected by an instrument preset (PRESET key), *RST and the
"Save/Recall" function. It is influenced only by the Factory Preset and the factory value
is equal to maximum level.
Remote command:
[:SOURce<hw>]:POWer:LIMit[:AMPLitude] on page 316
Catch Range +/Sets the capture range of the control system.
Within the range:
Target Level +/- Catch Range
the power control locks and tries to achieve the target level. Readings outside the
range are not considered.
Remote command:
[:SOURce<hw>]:POWer:SPC:CRANge on page 319
Delay Time
Defines a waiting period between the level adjustment of the generator and the next
measurement of the power sensor.
With this parameter, you compensate any dead times in the controlled system.
Remote command:
[:SOURce<hw>]:POWer:SPC:DELay on page 319
Use Peak Power
Activates control by means of the peak power values, provided the power sensor supports this function. Otherwise, the dialog does not show this parameter.
Remote command:
[:SOURce<hw>]:POWer:SPC:PEAK on page 320
Use SParameter - Power Sensors
Activates the use of the S-Parameter correction data of the connected power sensor.
For sensors with attenuator this checkbox is automatically checked.
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RF Block
Refer to the manual of the connected R&S NRP-Zxx power sensor for a description on
how to use the SParameter table.
Remote command:
:SENSe<ch>[:POWer]:CORRection:SPDevice:STATe on page 270
5.3.5.6
User Correction
The "User Correction" function is used to create and activate lists in which level correction values predefined by the user are freely assigned to RF frequencies. Correction is
performed by the user-defined table values being added to the output level for the
respective RF frequency.
With frequencies which are not contained in the list, the level correction is determined
by interpolation of the closest correction values.
The lists are created in the "List Editor". Each list is stored in its own file with the predefined file extension *. uco. The name of the User Correction file can be freely
selected. The files are loaded from the "Lists..." file manager. Externally created tables
with pairs of frequency and level values can be converted into User Correction files
using the import function. The external files must have the file extension *.txt or
*.csv. These file formats are provided e.g. by the Microsoft Excel program. The separators for table columns and for decimal floating-point numerals can be set. In addition,
internally created User Correction data can be exported into ASCII files using the
export function.
The amplitude can also be linearized automatically by means of an R&S NRP power
sensor connected to one of the generator output signals. With the aid of the "Fill with
Sensor" function, a table with correction values for external test assemblies can be
automatically determined, e.g. for compensating the frequency response of cables.
The User Correction list with the correction values acquired by the sensor is generated
in the "Edit User Correction List" menu. The correction values can be acquired any
time irrespective of the modulation settings of the generator.
If user correction is activated, the "UCOR" display (User Correction) is shown in the
header together with the "Level" display. The RF output level is the sum of both values.
"Level" + "UCOR" = Output level
If activated, user correction is effective in all operating modes.
User Correction Menu
To open the "User Correction" menu, select "RF > Configure > User Correction" or use
the MENU key under "RF".
The combined menu "ALC/UCOR" is divided into the several sections.
User Correction Settings
The "User Correction" settings are set in the most lower section of the combined dialog; this section is used to activate/deactivate user correction, and to create, select and
activate the lists.
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RF Block
The upper section provides access to the automatic level control settings, see Chapter 5.3.5.4, "Automatic Level Control - ALC", on page 134.
State - User Correction
Activates/deactivates user correction.
The "UCOR" status message appears in the frequency and level display.
Remote command:
[:SOURce<hw>]:CORRection[:STATe] on page 287
User Correction Value - User Correction
Indicates the current value for level correction.
Remote command:
[:SOURce<hw>]:CORRection:VALue? on page 288
User Cor. Data - User Correction
Calls the "File Select" menu for selecting and creating a list or the "File Manager".
Remote command:
[:SOURce]:CORRection:CSET:CATalog? on page 280
[:SOURce<hw>]:CORRection:CSET[:SELect] on page 287
[:SOURce]:CORRection:CSET:DELete on page 282
Edit User Cor. Data - User Correction
Calls the editor for editing the selected user correction list.
A list consists of any number of frequency/level value pairs. The currently selected list
is displayed.
Each list is saved as a separate file with extension *.uco. The file name and the directory to which the file is saved are user-selectable.
Note: Save list only after filling both columns (frequency and level), otherwise the
entries are lost.
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RF Block
"Frequency /
Hz"
Enters the frequency to which the level correction value applies.
"Power/dB"
Enters the level correction value to which the specified frequency
applies. The values can be entered manually or automatically with the
"Fill With Sensor" function (available in the "Edit" sub menu).
"Goto"
Selects row for editing.
Note: The "Fill..." function allows to automatically enter any number
of frequencies with freely selectable range and increment.
Using the "Fill With Sensor" function of the "Edit" sub menu requires
only the entry of the frequency values. The level values are automatically acquired by the connected power sensor.
If Goto row is selected, a window opens for entering the requested
row.
"Edit"
Calls a selection of possible actions described below.
"Insert Row"
Insert a new row before the marked row.
"Insert Range"
Insert new rows before the marked row. The number of rows to be
inserted can be defined in an entry window.
"Fill...."
Opens a sub menu for defining a set of list values to be automatically
entered in the ucor list (see "Filling the Correction List automatically"
on page 144).
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RF Block
"Fill With Sensor"
Calls the menu to activate the filling of the user correction list with
level values acquired by the selected power sensor (see "Filling the
Correction List with Power Sensor Measurement Data"
on page 146).
"Delete Row"
Deletes the marked row.
"Delete
Range..."
Allows to delete any number of rows starting with the marked row.
The number of rows to be deleted can be defined in an entry window.
"Save"
The list is saved under its current name.
Remote command:
[:SOURce<hw>]:CORRection:CSET[:SELect] on page 287
[:SOURce<hw>]:CORRection:CSET:DATA:FREQuency on page 281
[:SOURce<hw>]:CORRection:CSET:DATA:POWer on page 281
Import/Export
User correction list can be imported from externally created files or exported into text or
CSV-files. The import/export settings are available after clicking the "Import/Export"
button.
Import/Export >>>
Expands the menu with the area for import and export of user correction files.
Externally edited Excel tables with any number of frequency/level value pairs can be
imported as text or CSV-files and used for user correction.
Conversely, you can also export internally created user correction lists as text or CSVfiles.
Mode - User Correction
Selects if user correction lists should be imported or exported. The settings offered
depend on the selected mode.
Remote command:
[:SOURce<hw>]:CORRection:DEXChange:MODE on page 286
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RF Block
Extension - User Correction
Selects the file extension of the ASCII file to be imported or exported. Selection "TXT"
(text file) or "CSV" (Excel file) is available.
Remote command:
[:SOURce<hw>]:CORRection:DEXChange:AFILe:EXTension on page 283
Decimal Point - User Correction
Selects the decimal separator used in the ASCII data between '.' (decimal point) and ','
(comma) with floating-point numerals.
Remote command:
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SEParator:DECimal
on page 285
Column Separator- User Correction
Selects the separator between the frequency and level column of the ASCII table the
user correction list is exported to or imported from.
Remote command:
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SEParator:COLumn
on page 284
Select ASCII Source / Destination - User Correction
Calls the "File Manager" for selecting the ASCII file to be imported into a user correction list (source) or the ASCII file the user correction list is exported (destination) in.
Remote command:
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SELect on page 284
Destination / Source - User Correction
Calls the "File Manager" for selecting the user correction list to be exported (source)
into an ASCII file or the destination for the ASCII file to be imported (destination) in.
Remote command:
[:SOURce<hw>]:CORRection:DEXChange:SELect on page 286
Import / Export - User Correction
Starts the export or import of the selected file.
When import is selected, the ASCII file is imported as user correction list.
When export is selected, the user correction list is exported into the selected ASCII file.
Remote command:
[:SOURce<hw>]:CORRection:DEXChange:EXECute on page 285
Filling the Correction List automatically
The "Fill Table" menu enables you to automatically set the level correction values.
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RF Block
The start line and the number of rows to be filled are defined under "From" and
"Range."
The column to be filled is selected under "Select column to fill". Depending on the
selection here, the default for start, end, and increment value are set. As the settings
are interdependent, a change of one parameter may result in the automatic change of
one or more of the other parameters. The filling of the column with the selected value
settings is started with button "Fill".
The correction list entries are only computed when the "Fill" button is pressed.
From
Sets the start value of the index range.
Remote command:
n.a.
Range
Sets the range for filling the table.
Remote command:
n.a.
Select column to fill
Selects either the frequency or the level column to be filled with the value defined
below.
Remote command:
n.a.
Start value
Sets the start value for the frequency or the level entries.
Remote command:
n.a.
End value
Displays the end value for the frequency or the level entries.
Remote command:
n.a.
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RF Block
Increment value
Sets the increment for the frequency or the level entries.
Remote command:
n.a.
Fill
Fills the selected column in the set range with values, starting with the start value and
using the set increment.
Remote command:
n.a.
Filling the Correction List with Power Sensor Measurement Data
The level correction values for the user correction list can be acquired by means of
R&S NRP power sensors. The R&S NRP sensors are connected to either the
SENSOR connector or to one of the USB interfaces. Configuration of the connection is
performed in the "Power Sensor" menu (see Chapter 5.3.6.1, "NRP-Z Power Viewer",
on page 148). The filling of the user correction list with measurement data is performed in the ucor list editor (see " Edit User Cor. Data - User Correction "
on page 141).
In the editor, the frequencies for which the correction values are to be acquired are
entered in the frequency column (either manually or by means of the "Fill..." menu).
Do not save the list at this point, because the frequency entries are lost as long as
there are no entries for the level column also. In the following these entries are automatically acquired by the connected power sensor.
All level correction values for the given frequency values are measured using the
Power Sensor and automatically filled in the selected list after the "Execute" button is
pressed. The list is automatically stored and recalled again after filling.
Fill User Correction Data with Sensor Settings
The "Fill with Sensor" button of the "Edit User Correction Data" menu opens the associated menu.
This dialog describes all parameters for filling a table automatically with sensor readings.
To select the sensor and determine its parameters, refer to Chapter 5.3.6.1, "NRP-Z
Power Viewer", on page 148.
To fill the table, press the "Execute" button.
Fill User Correction Data with Sensor
Enables you to fill the table with correction data acquired by a connected power sensor
from Rohde & Schwarz.
"Sensor"
Displays connected sensors for selection.
"List To Fill"
Indicates the used list file.
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RF Block
"Include Zeroing"
Performs a zeroing procedure before acquiring the user correction
data to improve precision. Since during zeroing no signal may be
applied to the sensor, RF is temporarily switched off at the generator.
When unchecked, the zeroing procedure is skipped. The RF signal
level might be blanked shortly. This setting is recommended if blanking of RF is undesirable or the absence of power at the sensor can
not be guaranteed.
"Execute"
Performs automatic filling of the list, provided a sensor is detected
and the user correction list contains at least one frequency value.
Remote command:
[:SOURce<hw>]:CORRection:ZERoing:STATe on page 288
[:SOURce<hw>]:CORRection:CSET:DATA[:SENSor<ch>][:POWer]:SONCe
on page 282
Used SMC Settings for Measurement
Displays the settings relevant for the measurement.
"RF Source"
Shows the path for which the correction menu settings are made.
"Modulation"
Indicates the modulation state
"Amplitude"
Shows the currently set level.
"Use SParameter"
Indicates whether SParameter correction is used.
"Attenuator Mode"
Displays the selected mode of the attenuator.
"Fixed Range (PEP) In:"
Shows the level range.
Remote command:
n.a.
5.3.5.7
Reverse Power Protection
The reverse power protection prevents against overload by an external signal applied
to the RF output of the R&S SMC.
The reverse power protection is tripped when the power of the external signal becomes
too high. A relay opens and interrupts the internal connection to the RF output. This
condition is indicated in the display header by the "OVERLOAD" status message.
Overload
If an "Overload" status message is indicated in the display header, reset the overload
protection by pressing the RF ON/OFF key.
The RF input is activated when the overload protection is reset.
Remote command:
:OUTPut<hw>:PROTection:TRIPped? on page 267
:OUTPut<hw>:PROTection:CLEar on page 266
:OUTPut<hw>[:STATe] on page 267
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RF Block
5.3.6 RF Measurement
5.3.6.1
NRP-Z Power Viewer
The R&S SMC features the power viewer function for measuring or monitoring either
the RF output power, or a freely selectable signal source with R&S NRP-Z power sensors.
The instrument can perform up to 4 power measurements simultaneously.
To connect the sensors you have the following options:
●
connect the sensor directly at a USB connector
To connect a sensor directly via USB, use one of the appropriate adapter cables
R&S NRP-Z3 or R&S NRP-Z4.
●
connect the sensor indirectly via USB using the R&S NRP-Z5 USB Sensor Hub.
For the assignment to the available connectors, see Chapter 2, "Preparing for Use",
on page 15.
Using the R&S NRP-Z5 Sensor Hub
The R&S NRP-Z5 USB Sensor Hub (high-speed USB 2.0) can host up to 4 R&S NRPZ sensors and provides simultaneous internal and external triggering of all connected
sensors. You can directly connect the R&S NRP-Z Sensors to the standard NRP sensor connectors of the hub.
The hub is connected to the R&S instrument via USB with the adapter cable R&S
NRP-Z4.
See also the R&S website http://www.rohde-schwarz.com in section "Power Meters &
Voltmeters > R&S NRP-Z Sensors" for information on the sensor hub and the available
accessories.
The instrument automatically detects a connected R&S NRP-Z power sensor and indicates it in the "NRP-Z Power Viewer" dialog. Each connected sensor is assigned to
one of the four channels, according to the sequence of connection.
For device specific information on the connected sensor see the Chapter 5.2.3.5,
"NRP-Z Info/Update", on page 86 dialog. For information on the scope of your power
sensor refer to the manual of your R&S NRP-Zxx power sensor.
A sensor continuously measures the average signal power of the selected source,
such as an external signal, or the output signal of the signal generator with the RF level
used as reference value. The signal generator shows the result in the NRP-Z Power
Viewer Settings settings dialog, but you can also permanently display the readings in
the block diagram.
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Further functions of the R&S SMC related to R&S NRP-Z power sensors are:
●
Acquisition of level correction data, see Chapter 5.3.5.6, "User Correction",
on page 140.
The acquired level correction data is used to create and activate lists in which level
correction values predefined by the user are freely assigned to RF frequencies.
Correction is performed by the user-defined table values being added to the output
level for the respective RF frequency.
●
NRP-Z Level Control, see Chapter 5.3.5.5, "NRP-Z Level Control", on page 135.
Note that "NRP-Z Power Viewer" automatically disables "NRP-Z Level Control",
and vice versa.
●
The software version of the connected power sensor can be retrieved by means of
the remote control command SENSe<ch>[:POWer]:TYPE? on page 276.
Use the Chapter 5.2.3.5, "NRP-Z Info/Update", on page 86 dialog to update the
sensor software.
NRP-Z Power Viewer Settings
► To access the dialog for configuring the RF signal level, perform one of the following:
●
●
Select "RF > config... > RF Measurement > NRP-Z Power Viewer".
Press the MENU key and select "RF > RF Measurement > NRP-Z Power
Viewer".
The dialog shows the settings and measurement values of the sensor selected in
the field next to the connector symbol. For indicating the parameters of another
sensor, switch to the respective sensor in the selection list.
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RF Block
When you connect your power sensor(s) via the R&S NRP-Z5 USB sensor hub, each
channel of the hub is firmly assigned to the associated sensor channel in the generator.
The remote commands required to define the settings are described in Chapter 7.12,
"SENSe, READ and INITiate Subsystems", on page 268.
Sensor
Selects the R&S NRP-Z power sensor for display.
In remote control, the sensors are set up using the SENSe commands. The remote
measurement is triggered by the READ query which also provides the measurement
results.
The sensor is selected by suffix 1, 2, 3 or 4 in key word SENSe or READ of the command header.
Suffix 1 denotes the sensor connected at the first USB interface, and suffix 2, 3 and 4
are assigned to further sensors connected via USB. The suffix is identical to the index
which is assigned automatically to each sensor upon connection.
Note: The software version of the connected power sensor can be retrieved by means
of the remote control command :SENS:POW:TYPE?.
Use the "Setup >" Chapter 5.2.3.5, "NRP-Z Info/Update", on page 86 dialog to update
the sensor software.
Remote command:
SENSe<ch>[:POWer]:STATus[:DEVice]? on page 275
Type
Indicates the type and the serial number of the connected R&S NRP-Z power sensor.
The sensor type is automatically detected.
Remote command:
SENSe<ch>[:POWer]:TYPE? on page 276
SENSe<ch>[:POWer]:SNUMber? on page 275
State
Activates/deactivates level measurement by the power sensor.
The local state is set with the INIT command. Switching the local state off enhances
the measurement performance.
In remote control, the sensors are set up using the SENSe commands. The remote
measurement is triggered by the READ query which also provides the measurement
results. The state is not influenced by these commands, measurements results can be
retrieved with local State on or off.
The sensor is selected by suffix 1, 2, 3 or 4 in key word SENSe or READ of the command header.
Suffix 1 denotes the sensor connected at the first USB interface, and suffix 2, 3 and 4
are assigned to further sensors connected via USB. The suffix is identical to the index
which is assigned automatically to each sensor upon connection.
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RF Block
To query the availability of a sensor at a given connector, use the command
SENSe<ch>[:POWer]:STATus[:DEVice]? on page 275.
Remote command:
:INITiate<ch>[:POWer]:CONTinuous on page 269
Level (Peak)
With certain power sensors only, for example R&S NRP-Z81.
Indicates the measured peak level value with the selected unit.
Remote command:
:READ<ch>[:POWer]? on page 269
Level (Avg.)
Indicates the measured level value with the selected unit.
Remote command:
:READ<ch>[:POWer]? on page 269
Unit
Selects the unit used for result display.
The power sensor provides the measured value in Watt.
In which unit the measured value is indicated is selected here and might be Watt, dBm
or dBuV.
Remote command:
:SENSe<ch>:UNIT[:POWer] on page 277
Permanent Display State
Activates the permanent indication of the power measurement result in the upper right
corner of the block diagram. The instrument shows the type of sensor, the corresponding connector, the measurement source and - if set - the offset.
It is possible to switch the permanent display active for several sensors. In this case,
the instrument indicates the values of the sensor with the lowest port number in the
display.
Remote command:
:SENSe<ch>[:POWer]:DISPlay:PERManent:STATe on page 270
Display Priority
Determines whether the instrument displays the measured average or the peak power
permanently on the screen.
To select the peak power display, it is required that the R&S NRP-Zxx sensor supports
this feature. On power-on or connecting a sensor the average power value is set by
default.
To enable the permanent display in the block diagram, select Permanent Display
State .
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RF Block
Remote command:
:SENSe<ch>[:POWer]:DISPlay:PERManent:PRIority on page 271
Zero - Power Sensors
Activates the auto zero function.
Zeroing calibrates the external power sensor by adjusting its reading at zero signal
power. For this purpose, the RF power source must be switched off or disconnected
from the sensor. If a Rohde & Schwarz power sensor receives an input power during
the zeroing process, it aborts zeroing and generates an error message. Zeroing takes
a few seconds, depending on the sensor model. Refer to the documentation of your
power sensor for more information.
Tips for zeroing
When to perform zeroing:
● During warm up after switching on or connecting the instrument
● After a substantial change of the ambient temperature
● After fastening the power sensor module to an RF connector at high temperature
● After several hours of operation
● When low-power signals are to be measured, e.g. less than 10 dB above the lower
measurement limit.
● Switch off the RF power source for zeroing, but do not disconnect it from the power
sensor. This proceeding keeps the thermal equilibrium, and the zeroing process
also compensates the noise that superimposes the measured signal (e.g. from a
broadband amplifier).
Remote command:
:SENSe<ch>[:POWer]:ZERO on page 276
Source
Selects the source for measurement.
"RF"
Measurement source is the RF signal of the generator. The RF frequency is used as the measurement frequency of the sensor and the
corresponding correction factor is used.
In this mode the RF frequency of the generator is send to the sensor
automatically if changed.
"User"
Measurements source is any freely selectable source. The frequency
is entered manually under frequency (e.g. for measurement of amplifier gain with 2 sensors).
Remote command:
:SENSe<ch>[:POWer]:SOURce on page 275
Frequency
Source User only
Enters the frequency for measurement source "User".
Remote command:
:SENSe<ch>[:POWer]:FREQuency on page 274
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RF Block
Level Offset
Activates and defines a level offset which is added to the measured value. This allows
e.g. an attenuator in the signal path to be considered. The offset is always entered in
dB, irrespective of the selected unit for result display.
Remote command:
:SENSe<ch>[:POWer]:OFFSet:STATe on page 274
:SENSe<ch>[:POWer]:OFFSet on page 274
Filter
Determines the length of the filter used for the measurement. The filter length affects
the measurement time directly.
The averaging filter is used to reduce fluctuations in the measured result to the extent
desired. Such fluctuations can be caused by inherent noise of the measuring instrument, modulation of the measurement signal or beats from the superposition of adjacent carriers. A more stable display has to be traded off against longer measurements.
The measurement result is obtained from a two-stage averaging process.
Note: Longer measurements do not mean that it takes longer to display a new result,
but rather that it takes longer for the result to settle when the power changes.
Measurements are continuously repeated in a predefined time window. The measurement result is obtained by averaging the measured values for the last 2N time windows. The number N is the filter length, the factor of 2 arises because the output signals from the microwave detector to suppress low-frequency noise are chopped at the
same rate as the time windows, which means that an independent measured value can
only be obtained from two consecutive values. As the filter length is the multiplier for
the time window it directly influences the measurement time.
The filter length can be selected automatically or can be manually set to a fixed value.
As a preliminary, you should always check if the auto mode is giving satisfactory
results because you will always have to adjust an optimal, manual filter-length setting if
the power is not constant.
Selection "Fixed Noise" is offered for achieving defined measurement accuracy.
"Auto"
The filter length is automatically selected and adapted to the currently
measured value. With very high signals the filter length and therefore
the measurement time can be short. With very low signal levels the
filter length and therefore the measurement time is increased in order
to reduce noise. The used filter length is indicated in the field to the
right, see Filter Length.
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RF Block
"User"
The filter length is set manually.
The filter length is entered in the entry window to the right. As the filter length works as a multiplier for the time window, this results in a
constant measurement time.
Note: The time window varies depending on the used sensor. For
most sensors it is fixed to 20 ms. For the R&S NRP-Z81 sensor it is
10 us. Therefore, the user filter length for the R&S NRP-Z81 has be
about 1000 times larger than the filter length for other sensors in
order to achieve the same filtering result.
The Auto Once button can be used to search for the optimum filter
length for the current measurement conditions. The found filter length
is indicated in the field to the right, see Filter Length.
"Fixed Noise"
The averaging factor is selected so that the sensors intrinsic noise (2
standard deviations) does not exceed the specified noise content.
The desired noise content is entered in the entry field to the right, see
Noise Content.
To avoid very long settling times when the power is low, the averaging factor can be limited with the Timeout parameter.
Remote command:
:SENSe<ch>[:POWer]:FILTer:TYPE on page 273
Filter Length ← Filter
Indicates the used filter length for filter type "Auto" or "User".
Remote command:
:SENSe<ch>[:POWer]:FILTer:LENGth:AUTO? on page 271
:SENSe<ch>[:POWer]:FILTer:LENGth[:USER] on page 271
Noise Content ← Filter
Sets the noise content for filter type "Fixed Noise".
Remote command:
:SENSe<ch>[:POWer]:FILTer:NSRatio on page 272
Timeout ← Filter
Sets a time limit for the averaging process.
Remote command:
:SENSe<ch>[:POWer]:FILTer:NSRatio:MTIMe on page 272
Auto Once ← Filter
Calculates the optimum filter length for the current measurement conditions and indicates the value in the Filter Length.
Remote command:
:SENSe<ch>[:POWer]:FILTer:SONCe on page 273
Use Default Aperture Time
Enables you to specify a user-defined aperture time for the respective sensor.
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RF Block
The sensor default setting is usually sufficient. If however, the readings vary, it is recommended that you adjust the aperture time exactly to one modulation period, in order
to obtain stable readings. To specify the aperture time, see Aperture Time.
Remote command:
:SENSe<ch>[:POWer]:APERture:DEFault:STATe on page 268
Aperture Time
Defines the acquisition time for the respective sensor, provided the entry field is
enabled, see Use Default Aperture Time.
For example you can adjust the aperture time exactly to one signal period, in order to
obtain a sufficient low average value.
Remote command:
:SENSe<ch>[:POWer]:APERture:TIMe on page 269
Use SParameter - Power Sensors
Activates the use of the S-Parameter correction data of the connected power sensor.
For sensors with attenuator this checkbox is automatically checked.
Refer to the manual of the connected R&S NRP-Zxx power sensor for a description on
how to use the SParameter table.
Remote command:
:SENSe<ch>[:POWer]:CORRection:SPDevice:STATe on page 270
Enable Logging
Activates recording of R&S NRP-Z power sensor readings.
If enabled, every value measured by a connected power sensor and indicated in the
user interface, is written to a log file. Per measurement the function logs the measured
value (2 readings when you work with peak sensors), the sensor type and the measurement time (time stamp).
The function automatically creates the file name SensLog<n>.txt and stores the file
in *txt format under /var/user/SensorLogging on the hard disk. You can enable
logging for each connected sensor separately. If enabled, one file per sensor is written.
Note: This specific function is intended for measurements with long time intervals, or if
there is a risk that the connection to the sensor can be interrupted and you need the
data for reconstruction.
The simplified recording function continuously writes the values in the file of the corresponding sensor number, like Sens1Log.txt. When you start a new measurement,
the existing data will not be overwritten, but added to the file.
If you use this function, it is recommended that you regularly remove the files from the
hard disk, since they require storage capacity.
Remote command:
:SENSe<ch>[:POWer]:LOGGing:STATe on page 274
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Instrument Function
RF Block
5.3.7 RF Sweep Mode
5.3.7.1
Overview
The R&S SMC offers three different sweep types (frequency sweep, level sweep and
LF sweep) to be activated alternatively. Each type has 6 modes which differ with
respect to the sweep cycle mode (continuous, individual and step-by-step) and triggering mode (automatic, internal and external).
●
Activating a sweep mode immediately disables NRP-Z Level Control.
Vice versa, a running sweep mode blocks "NRP-Z Level Control". It can not be
activated.
●
If you want to remain at a specific frequency or level value during a sweep, enter
the value directly in the status bar. The sweep stops immediately.
Setting a sweep
A sweep is set in five basic steps which are shown below taking a frequency sweep as
an example.
The LF sweep is activated and configured in the "Mod Gen" block.
1. Set the sweep range ("Start Freq" and "Stop Freq" or "Center Freq" and "Span").
2. Select linear or logarithmic sweep spacing ("Spacing").
3. Set the step width ("Step Lin/Log") and dwell time ("Dwell Time").
4. Activate the sweep ("Mode" to Auto, Single, Step or Extern Single, Extern Step).
5. Trigger the sweep, except for Auto mode ("Execute Single Sweep", Current Frequency or External Trigger Signal).
It is recommended to switch off the display update for optimum sweep performance
especially with short dwell times (see Chapter 5.2.3.6, "Display Update", on page 87).
5.3.7.2
RF Frequency Sweep
The dialog enables you to activate and configure a sweep for the RF frequency.
To open the "RF Frequency Sweep" dialog, select "RF > Configure > RF Frequency
Sweep" or use the MENU key under "RF".
In the top section of the dialog, the RF sweep is activated and the sweep mode is
selected.
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RF Block
The buttons are used to reset the RF sweep (all sweep modes) or to execute the RF
sweep ("Single" mode).
The sweep range, sweep spacing and dwell time are set in the bottom section.
You can configure the sweep range of the RF sweep in two ways, either by entering
the "Start" and "Stop" values or by entering the "Center" frequency and the "Span".
The two sets of parameters correlate as follows:
●
"Start Freq" = "Center Freq" - "Span"/2
●
"Stop Freq" = "Center Freq" + "Span"/2
●
"Center Freq" = ("Start Freq" + STOP FREQ)/2
●
"Span" = "Stop Freq" - "Start Freq"
RF Frequency Sweep Settings
► To access the sweep dialog, select "RF > configure > Sweep/List > RF Frequency
Sweep".
In these dialogs you can configure the corresponding sweep signal.
State - Frequency Sweep
Activates RF sweep mode.
Note: Activating the RF sweep automatically deactivates other sweeps.
Remote command:
[:SOURce<hw>]:FREQuency:MODE on page 294
Mode - RF Frequency Sweep
Selects the RF frequency sweep mode.
If you change the sweep mode during the execution, the signal generator stops the
sweep and starts with the next trigger event at the initial value.
The "Reset Sweep" button sets the sweep to the start value.
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RF Block
"Auto"
Generates a continuously repeating sweep signal immediately after
activating the sweep mode.
The sweep steps are performed atomatically, controlled by the dwell
time, see " Dwell Time - Frequency Sweep " on page 163.
Example:
SOUR:SWE:FREQ:MODE AUTO
TRIG:FSW:SOUR AUTO
SOUR:FREQ:MODE SWE
"Single"
Generates a single sweep cycle after a trigger event.
The sweep steps within the cycle are performed automatically, controlled by the dwell time. If one cycle is completed, the instrument
waits for the next trigger event.
To trigger the sweep, use "Execute Single Sweep" button, or the corresponding remote control commands, for example *TRG.
Example:
SOUR:SWE:FREQ:MODE AUTO
TRIG:FSW:SOUR SING
SOUR:FREQ:MODE SWE
SOUR:SWE:FREQ:EXEC
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RF Block
"Step"
Generates the sweep signal step-by-step, manually triggered.
To perform the sweep steps, enter the frequency value under Current
Freq - Frequency Sweep . You can directly enter the value, but also
use the UP and DOWN navigation keys or the ROTARY KNOB.
You can determine the step width below in the entry field "Step Lin" or
"Step Log", see Step Lin/Log - Frequency Sweep .
If a step is out of the sweep range ("Start Freq" or "Stop Freq"), it is
ignored.
Note: To step through the sweep frequencies in remote control
mode, use the FREQ:MAN command with the UP or DOWN parameter.
Example:
SOUR:FREQ:CENT 300MHz
SOUR:FREQ:SPAN 400MHz
SOUR:SWE:FREQ:SPAC LIN
SOUR:SWE:FREQ:STEP:LIN 100MHz
SOUR:FREQ:MODE MAN
TRIG:FSW:SOUR SING
set sweep mode "Step".
SOUR:FREQ:MODE SWE
activate sweep mode, the frequency is set to "Start Freq".
SOUR:FREQ:MAN UP
set the frequency to the next higher sweep frequency.
SOUR:FREQ:MAN DOWN
set the frequency to the next lower sweep frequency.
"Extern Single" Generates a single sweep cycle when an a external trigger event
occurs.
The sweep steps within the cycle are performed automatically, controlled by the dwell time. If one cycle is completed, the instrument
waits for the next trigger event.
To trigger the sweep, apply an external trigger signal.
Refer to the description of the rear panel for information on the connectors for external trigger signal input (see Chapter 2.2, "Rear Panel
Tour", on page 21).
Example:
SOUR:SWE:FREQ:MODE AUTO
TRIG:FSW:SOUR EXT
SOUR:FREQ:MODE SWE (External trigger)
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RF Block
"Extern Step"
Generates the sweep signal step-by-step, manually triggered.
To trigger a sweep step, apply an external trigger signal. The step
width corresponds to the step width set for the rotary knob.
Example:
SOUR:SWE:FREQ:MODE STEP
SOUR:SWE:FREQ:SPAC LIN
SOUR:SWE:FREQ:STEP:LIN 1MHz
TRIG:FSW:SOUR EXT
SOUR:FREQ:MODE SWE (External trigger)
"Extern Start/Stop"
Generates a continuously repeating sweep signal that is started,
stopped and restarted by subseqeunt external trigger events. The
sweep steps are performed automatically, controlled by the dwell
time.
Refer to the description of the rear panel for information on the connectors for external trigger signal input (see Chapter 2.2, "Rear Panel
Tour", on page 21).
Example:
SOUR:SWE:FREQ:MODE AUTO
TRIG:FSW:SOUR EAUT
SOUR:FREQ:MODE SWE (External trigger)
Remote command:
[:SOURce<hw>]:SWEep[:FREQuency]:MODE on page 334
:TRIGger<hw>:FSWeep:SOURce on page 364
[:SOURce<hw>]:FREQuency:MODE on page 294
Execute Single Sweep - Frequency Sweep
Starts a sweep manually. This trigger button is displayed in "Single" mode.
Remote command:
[:SOURce<hw>]:SWEep[:FREQuency]:EXECute on page 334
:TRIGger<hw>:FSWeep[:IMMediate] on page 364
:TRIGger<hw>[:SWEep][:IMMediate] on page 368
Reset Sweep - Frequency Sweep
Resets the sweep.
With the next trigger event, the sweep starts with at the initial value.
Remote command:
[:SOURce<hw>]:SWEep:RESet[:ALL] on page 343
Start Freq - Frequency Sweep
Sets the start frequency.
Remote command:
[:SOURce<hw>]:FREQuency:STARt on page 296
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RF Block
Stop Freq - Frequency Sweep
Sets the stop frequency.
Remote command:
[:SOURce<hw>]:FREQuency:STOP on page 296
Center Freq - Frequency Sweep
Sets the center frequency.
Remote command:
[:SOURce<hw>]:FREQuency:CENTer on page 291
Span - Frequency Sweep
Sets the span.
Remote command:
[:SOURce<hw>]:FREQuency:SPAN on page 295
Current Freq - Frequency Sweep
Displays the current frequency.
In sweep "Step" mode, the parameter is editable and you can enter frequency for the
next step.
Remote command:
[:SOURce<hw>]:FREQuency:MANual on page 293
Spacing - Frequency Sweep
Selects the mode for the calculation of the frequency sweep intervals.
"Linear"
Takes the frequency value entered as an absolute value in Hz.
"Logarithmic"
Takes the value entered as a lograithmic value, that means as a constant fraction of teh current frequency in %.
Remote command:
[:SOURce<hw>]:SWEep[:FREQuency]:SPACing on page 336
Shape - RF Frequency Sweep
Selects the waveform shape of the sweep signal.
"Sawtooth"
One sweep runs from start to stop frequency. Each subsequent
sweep starts at the start frequency, that means the shape of the
sweep sequence resembles a sawtooth.
"Triangle"
The sweep runs from the start to the stop frequency and back, that
means the shape of the sweep resembles a triangle. Each subsequent sweep starts at the start frequency.
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RF Block
Remote command:
[:SOURce<hw>]:SWEep[:FREQuency]:SHAPe on page 336
Retrace - RF Frequency Sweep
Activates that the signal changes to the start frequency value while it is waiting for the
next trigger event.
You can enable this feature, when you are working with sawtooth shapes in sweep
mode "Single" or "External Single", see Mode - RF Frequency Sweep .
Remote command:
[:SOURce<hw>]:SWEep[:FREQuency]:RETRace on page 335
Step Lin/Log - Frequency Sweep
Sets the step width for the individual frequency sweep steps.
At each step this value is added to the current frequency.
Depending on the Spacing - Frequency Sweep mode you have set, the corresponding
parameter is displayed.
"Step Lin"
The step width is a constant value in Hz.
Remote command:
[:SOURce<hw>]:SWEep[:FREQuency]:STEP[:LINear] on page 337
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RF Block
"Step Log"
The step width is determined logarithmically in %, that means as a
constant fraction of the current frequency.
Successive frequencies are calculated as follows:
●
●
start_f < stop_f
f2 = f1 * (1 + step_log / 100)
If f2 > stop_f: f2 is set to stop_f.
start_f > stop_f
f2 = f1 / (1 + step_log / 100)
If f2 < stop_f: f2 is set to stop_f.
When the shape "Triangle" is set, the frequency values on the slope
from stop_f back to start_f are the same as on the slope from
start_f to stop_f.
Remote command:
[:SOURce<hw>]:SWEep[:FREQuency]:STEP:LOGarithmic on page 338
Dwell Time - Frequency Sweep
Sets the dwell time. The dwell time determines the duration of the individual sweep
steps.
The "Dwell Time" set by the user is used as the step time of the sweep. The effective
net dwell time is shorter, reduced by the setting time. This setting time may be greater
than the time specified in the data sheet.
Note:
It is recommended to switch off the display update for optimum sweep performance
especially with short dwell times (see Chapter 5.2.3.6, "Display Update", on page 87).
Remote command:
[:SOURce<hw>]:SWEep[:FREQuency]:DWELl on page 333
Ext. Trigger Input Slope
Sets the polarity of the active slope of an externally applied instrument trigger.
This setting affects the PULSE EXT/INST TRIG input (BNC connector at the rear of the
instrument).
"Positive"
activates the rising edge of the trigger signal.
"Negative"
activates the falling edge of the trigger signal.
Remote command:
[:SOURce]:INPut:TRIGger:SLOPe on page 298
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Instrument Function
RF Block
5.3.7.3
RF Level Sweep
To open the "Level Sweep" menu, select "RF > Configure > Level Sweep" or use the
MENU key under "RF".
RF Level Sweep Settings
In the top section, the RF level sweep is activated and the sweep mode is selected.
The buttons are used to reset the level sweep (all sweep modes) or to execute the
level sweep ("Single" mode).
The sweep range, sweep spacing and dwell time are set in the bottom section.
State - Level Sweep
Activates Level Sweep mode.
Note: Activating the RF level sweep mode automatically deactivates other sweeps.
Remote command:
[:SOURce<hw>]:POWer:MODE on page 318
Mode - Level Sweep
Selects the level sweep instrument operating mode and the sweep mode.
If you change the sweep mode during the execution, the signal generator stops the
sweep and starts with the next trigger event at the initial value.
The "Reset Sweep" button sets the sweep to the start value.
"Auto"
Sets an automatically repeated sweep cycle.
Example:
SOUR:SWE:POW:MODE AUTO
TRIG:PSW:SOUR AUTO
SOUR:POW:MODE SWE
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RF Block
"Single"
Sets a single sweep cycle. The sweep is triggered by the "Execute
Single Sweep" button, or by means remote trigger commands, e.g.
*TRG.
Example:
SOUR:SWE:POW:MODE AUTO
TRIG:PSW:SOUR SING
SOUR:POW:MODE SWE
SOUR:SWE:POW:EXEC
"Step"
Sets a step-by-step sweep cycle.
If this mode is activated, the cursor moves to the value displayed for
"Current Level". Each sweep step is triggered by a variation of the
value in the "Current Level" entry window. The step width is set below
at entry field "Step".
If this mode is activated, the cursor moves to the value displayed for
"Current Level". If a different sweep mode was activated prior to the
"Step" mode, the current sweep is stopped. The step sweep starts at
the current level value.
Example:
SOUR:SWE:POW:MODE MAN
TRI:PSW:SOUR SING
SOUR:SWE:POW:STEP 0.5
SOUR:POW:MODE SWE
SOUR:POW:MAN -16
The value entered with command SOUR:SWE:POW:STEP sets the
step width.
The value entered with command SOUR:POW:MAN has no effect, the
command only triggers the next sweep step. However, the value has
to be in the currently set sweep range (start to stop). In remote control only a step-by-step sweep from start to stop frequency is possible.
"Extern Single" Sets a single sweep cycle. The sweep is triggered by an external trigger signal.
Refer to the description of the rear panel for information about the
connectors for external trigger signal input (see Chapter 2.2, "Rear
Panel Tour", on page 21).
Example:
SOUR:SWE:POW:MODE AUTO
TRIG:PSW:SOUR EXT
SOUR:POW:MODE SWE (External trigger)
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RF Block
"Extern Step"
Sets a step-by-step sweep cycle. Each sweep step is triggered by an
external trigger signal (trigger source as described under "Extern Single"). The step width corresponds to the step width of the rotary knob.
Example:
SOUR:SWE:POW:MODE STEP
SOUR:SWE:POW:STEP 0.5
TRIG:PSW:SOUR EXT
SOUR:POW:MODE SWE (External trigger)
"Extern Start/Stop"
Sets an automatically repeated sweep cycle that is started, stopped
and restartet by subsequent external trigger events.
The first external trigger signal starts the sweep (Start).
The next external trigger signal stops the sweep at the current frequency (Stop).
The third external trigger signal starts the sweep at the start frequency (Start).
Refer to the description of the rear panel for information about the
connectors for external trigger signal input (see section "Legend for
Rear Panel View").
Example:
SOUR:SWE:POW:MODE AUTO
TRIG:PSW:SOUR EAUT
SOUR:POW:MODE SWE (External trigger)
Remote command:
[:SOURce<hw>]:SWEep:POWer:MODE on page 339
:TRIGger<hw>:PSWeep:SOURce on page 366.
[:SOURce<hw>]:POWer:MODE on page 318
Reset Sweep - Level Sweep
Resets the sweep. The start level is set and the next sweep starts from there.
Remote command:
[:SOURce<hw>]:SWEep:RESet[:ALL] on page 343
Execute Single Sweep - Level Sweep
Triggers the sweep manually. A manual sweep can only be triggered if "Mode Single"
is selected.
Example:
SOUR:SWE:POW:MODE AUTO
TRIG:PSW:SOUR SING
SOUR:POW:MODE SWE
SOUR:SWE:EXEC
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RF Block
Remote command:
[:SOURce<hw>]:SWEep:POWer:EXECute on page 339
:TRIGger<hw>:PSWeep[:IMMediate] on page 367
:TRIGger<hw>[:SWEep][:IMMediate] on page 368
Start Level - Level Sweep
Sets the start level.
Remote command:
[:SOURce<hw>]:POWer:STARt on page 321
Stop Level - Level Sweep
Sets the stop level.
Remote command:
[:SOURce<hw>]:POWer:STOP on page 322
Current Level - Level Sweep
Displays the current level.
If "Step" is set, the level for the next level step of the sweep is entered here.
Remote command:
[:SOURce<hw>]:POWer:MANual on page 317
Shape - RF Level Sweep
Selects the cycle mode for a sweep sequence (shape).
"Sawtooth"
One sweep runs from the start level to the stop level. The subsequent
sweep starts at the start level again, i.e. the shape of sweep
sequence resembles a sawtooth.
"Triangle"
One sweep runs from start to stop level and back, i.e. the shape of
the sweep resembles a triangle. Each subsequent sweep starts at the
start level again.
Remote command:
[:SOURce<hw>]:SWEep:POWer:SHAPe on page 341
Retrace - RF Level Sweep
Activates that the signal changes to the start level value while it is waiting for the next
trigger event. It allows you to shift down the power during the waiting period.
You can enable this feature, when you are working with sawtooth shapes in sweep
mode "Single" or "External Single", see Mode - Level Sweep .
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RF Block
Remote command:
[:SOURce<hw>]:SWEep:POWer:RETRace on page 341
Step - Level Sweep
Sets the step width for the individual sweep steps. This entry is effective for all sweep
modes.
With the level sweep, the logarithmic step width is a constant fraction of the current
level. This fraction is added to the current level. The logarithmic step width is entered in
dB.
Remote command:
[:SOURce<hw>]:SWEep:POWer:STEP[:LOGarithmic] on page 342
Dwell Time - Level Sweep
Enters the dwell time and determines the duration of the individual sweep steps.
The "Dwell Time" set by the user is used as the step time of the sweep. The effective
net dwell time is shorter, reduced by the setting time. This setting time may be greater
than the time specified in the data sheet.
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Modulation
Note:
It is recommended to switch off the display update for optimum sweep performance
especially with short dwell times (see Chapter 5.2.3.6, "Display Update", on page 87).
Remote command:
[:SOURce<hw>]:SWEep:POWer:DWELl on page 339
Ext. Trigger Input Slope
Sets the polarity of the active slope of an externally applied instrument trigger.
This setting affects the PULSE EXT/INST TRIG input (BNC connector at the rear of the
instrument).
"Positive"
activates the rising edge of the trigger signal.
"Negative"
activates the falling edge of the trigger signal.
Remote command:
[:SOURce]:INPut:TRIGger:SLOPe on page 298
5.4 Modulation
5.4.1 Overview of Modulation
Analog modulation is a method used to transmit information of an LF (Low Frequency)
signal in accordance with a second signal, typically one of a higher frequency. This is
done by varying one or more properties of a high frequency waveform, called the modulation or carrier signal, with the modulating signal that contains the information to be
transmitted.
The three key parameters of the modulation signal are the amplitude, phase and frequency. These parameters are modified in accordance with the low frequency signal to
obtain the modulated RF signal.
The R&S SMC provides all the various types of modulation, such as:
●
AM (Amplitude Modulation)
●
FM (Frequency Modulation)
●
PhiM (Phase Modulation)
●
PULM (Pulse Modulation)
The basic unit (R&S SMC + frequency option R&S SMC-B10x) enables you to generate modulation signal (sine) without additional equipment options and provides als a
standard LF generator.
Settings for the modulation are made in separate modulation menus. These menus
can be accessed in the block diagram by way of the "Modulation" function block, or by
means of the menu with the same name which is opened using the MENU key.
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Modulation
5.4.1.1
Enabling/Disabling Analog Modulations using the MOD On/Off Key
The MOD ON/OFF key switches the modulations on and off.
MOD ON/OFF
Press the MOD ON/OFF key to enable/disable analog modulations.
Pressing the key again restores the status that was active before the last switch-off.
"MOD OFF" is displayed in the info line of the header next to the "Level" field.
Remote command:
[:SOURce<hw>]:MODulation[:ALL][:STATe] on page 308
5.4.1.2
Modulation Sources
The following modulations use internal and external modulation sources:
●
Amplitude modulation
●
Pulse modulation
●
Frequency modulation
●
Phase modulation
Internal Modulation Sources
An LF generator and a pulse generator are available as internal modulation sources.
The LF generator supplies sinusoidal. The pulse generator provides single and double
pulse modulation with selectable pulse widths and periods.
See also Chapter 5.5.1, "Overview of LF Generator", on page 179.
External Modulation Sources
The modulation input MOD EXT at instrument front provides the external modulation
sources for amplitude, frequency and phase modulation.
The external modulation signal for AM, FM and PM at the input must have a voltage of
US = 1 V (UEFF = 0.707 V) in order to achieve the displayed modulation depth and
range. The input voltage should not exceed 1 V, otherwise modulation distortions might
occur.
The maximum modulation frequency is 100 kHz for frequency and phase modulation,
and 50 kHz for amplitude modulation.
The PULSE EXT/INST TRIG connector at the rear of the instrument controls the external pulse modulation. The input shows some hysteresis with threshold levels of
0.5 V/1.5 V. The voltage must not exceed 10 V.
Simultaneous Operation of Several Modulations or Other Operating Modes
The table shows the modulations and operating modes which can be activated simultaneously (+) or which deactivate each other (-).
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Modulation
AM
FM
PhiM
Pulse
Amplitude modulation (AM)
/
+
+
-
Frequency modulation (FM)
+
/
-
+
Phase modulation (PhiM)
+
-
/
+
Pulse modulation (Pulse)
-
+
+
/
5.4.2 Amplitude Modulation (AM)
An internal and/or external source can be selected for amplitude modulation. The LF
modulation generator is available as the internal source.
The MOD EXT input connector for external feed of analog modulation signals is at the
front of the instrument. The coupling mode of the input (AC or DC) can be selected.
The AM modulation depth is limited by the maximum peak envelope power (PEP).
5.4.2.1
Amplitude Modulation Settings
To open the "Amplitude Modulation" dialog, select "Modulation > Configure > Amplitude Modulation" or use the MENU key under "Modulation".
In the upper section of the dialog, the modulation source is selected and the modulation switched on. The modulation source can be selected independently for the different modulation types and the LF output.
The configuration of the selected external or internal modulation source is performed in
the lower section of the dialog or in the "LF Output" dialog (internal source only).
These settings affect all modulations which use the same modulation source.
State
Activates amplitude modulation.
Remote command:
[:SOURce<hw>]:AM:STATe on page 279
AM Source
Selects the source for the AM modulation signal.
"Internal"
Uses the internal LF generator as modulation signal source for AM.
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Modulation
"External"
Uses an externally applied modulation signal.
The external signal is input via the MOD EXT connector.
Remote command:
[:SOURce<hw>]:AM:SOURce on page 279
AM Depth
Sets the modulation depth in percent.
Remote command:
[:SOURce<hw>]:AM[:DEPTh] on page 278
LF Gen Freq
Sets the frequency of the LF generator.
This setting affects all analog modulations which use the LF generator as the internal
modulation source.
Remote command:
[:SOURce]:LFOutput<ch>:FREQuency on page 300
AM Sensitivity
Displays the input sensitivity of the externally applied modulation signal at the MOD
EXT input in %/V.
The modulation depth entered under AM Depth is achieved with 1 Volt modulation of
the input.
Remote command:
[:SOURce<hw>]:AM:SENSitivity? on page 278
AM External Coupling
Selects the coupling mode (AC or DC) for external feed.
Note: Coupling for external feed via input MOD EXT can be set independently for all
modulations using the external modulation signal.
"AC"
Disconnects the DC voltage component and uses only the AC component of the modulation signal.
"DC"
Uses the modulation signal with both components, AC and DC.
Remote command:
[:SOURce<hw>]:AM:EXTernal:COUPling on page 278
Ext. Impedance
(Source "External" only)
Sets the impedance for the external modulation signal, applied at the MOD EXT connector.
You can select 600 Ohm or high (>100 kOhm).
This setting affects all analog modulations which use the external modulation signal.
Remote command:
[:SOURce<hw>]:INPut:MODext:IMPedance on page 298
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Modulation
5.4.3 Frequency Modulation (FM)
An internal or external source can be selected for frequency modulation. The LF GEN
modulation generator is available as the internal source.
The MOD EXT input connectors for external feed of analog modulation signals are at
the front of the instrument. The coupling mode of the input (AC or DC) can be selected.
It is not possible to use frequency modulation simultaneously with phase modulation.
See "Simultaneous Operation of Several Modulations or Other Operating Modes"
on page 170 for an overview in detail.
5.4.3.1
Frequency Modulation Settings
To access the "Frequency Modulation" dialog, select "Modulation > Configure > Frequency Modulation" or use the MENU key under "Modulation".
In the upper section of the dialog, you can select the modulation source and activate
modulation. The modulation source can be selected independently for the different
modulation types and the LF output.
The configuration of the selected external or internal modulation source is performed in
the lower section of the menu or in the "Mod Gen" block (internal source only).
These settings affect all modulations which use the same modulation sources.
State
Activates frequency modulation.
Activation of FM deactivates phase modulation.
Remote command:
[:SOURce<hw>]:FM:STATe on page 291
FM Source
Selects the source for the FM signal.
"Internal"
Uses the internal LF generator as modulation signal source for FM.
"External"
Uses an externally applied modulation signal.
The external signal is input via the MOD EXT connector.
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Modulation
Remote command:
[:SOURce<hw>]:FM:SOURce on page 290
FM Deviation
Sets the modulation deviation in Hz.
The maximum deviation depends on the RF frequency and the modulation mode (see
data sheet).
Note that you can set a deviation that is too high for a specific RF frequency, or set an
RF frequency outside of the adjustable range of the deviation. In both cases, the instrument sets the maximum deviation and displays an error message.
Remote command:
[:SOURce<hw>]:FM[:DEViation] on page 288
[:SOURce<hw>]:FM:INTernal:DEViation on page 289
[:SOURce<hw>]:FM:EXTernal:DEViation on page 289
LF Gen Freq
Sets the frequency of the LF generator.
This setting affects all analog modulations which use the LF generator as the internal
modulation source.
Remote command:
[:SOURce]:LFOutput<ch>:FREQuency on page 300
FM Sensitivity
Displays the input sensitivity of the externally applied modulation signal at the MOD
EXT input in Hz/V.
The modulation deviation entered with FM Deviation is achieved with 1 Volt (= Upeak) of
the input signal.
Note: The input voltage must not exceed 1.1 Vp otherwise modulation distortions
occur.
Remote command:
[:SOURce<hw>]:FM:SENSitivity? on page 290
Adjust FM Offset
Starts the adjustment for the FM/PhiM modulator. The option is adjusted concerning
DC-offset.
Remote command:
:CALibration<hw>:FMOFfset[:MEASure]? on page 240
FM External Coupling
(Source "External" only)
Selects the coupling mode (AC or DC) for the externally applied frequence modulation
signal.
Note: Coupling for external feed via input MOD EXT can be set independently for all
modulations using the external modulation signal.
"AC"
Disconnects the DC voltage component and uses only the AC component of the modulation signal.
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Modulation
"DC"
Uses the modulation signal with both components, AC and DC.
Remote command:
[:SOURce<hw>]:FM:EXTernal:COUPling on page 289
Ext. Impedance
(Source "External" only)
Sets the impedance for the external modulation signal, applied at the MOD EXT connector.
You can select 600 Ohm or high (>100 kOhm).
This setting affects all analog modulations which use the external modulation signal.
Remote command:
[:SOURce<hw>]:INPut:MODext:IMPedance on page 298
5.4.4 Phase Modulation (PhiM)
It is not possible to use phase modulation simultaneously with frequency modulation.
See "Simultaneous Operation of Several Modulations or Other Operating Modes"
on page 170 for an overview in detail.
An internal or external source can be selected for phase modulation. The LF GEN
modulation generator is available as the internal source.
The MOD EXT input connector for external feed of analog modulation signals is at the
front of the instrument. The coupling mode of the input (AC or DC) and the impedance
can be selected.
5.4.4.1
Phase Modulation Dialog
To open the "Phase Modulation" dialog, select "Modulation > Configure > Phase Modulation" or use the MENU key under "Modulation".
In the upper section of the dialog, the modulation source is selected and the modulation switched on. The modulation source can be selected independently for the different modulation types and the LF output.
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Modulation
The configuration of the selected external or internal modulation source is performed in
the lower section of the "LF Output" dialog (internal source only) or in the "Mod Gen"
block.
These settings affect all modulations which use the same modulation sources.
An LF generator and a pulse generator are available as internal sources.
State
Activates ɸM modulation.
Activation of ɸM deactivates frequency modulation.
Remote command:
[:SOURce<hw>]:PM:STATe on page 312
ɸM Source
Selects the source for the ɸM signal.
"Internal"
Uses the internal LF generator as the modulation signal source for
ɸM.
"External"
Uses an externally applied modulation signal.
The external signal is input via the MOD EXT connector.
Remote command:
[:SOURce<hw>]:PM:SOURce on page 312
ɸM Deviation
Sets the modulation deviation in RAD.
The maximum deviation depends on the set RF frequency and the selected modulation
mode (see data sheet).
If the entered deviation is too high for the set RF frequency, the instrument provides
the maximum value and displays an error message. The same applies, if the RF frequency is set to a value, at which the deviation cannot be determined.
Remote command:
[:SOURce<hw>]:PM[:DEViation] on page 310
[:SOURce<hw>]:PM:INTernal:DEViation on page 311
[:SOURce<hw>]:PM:EXTernal:DEViation on page 311
LF Gen Freq
Sets the frequency of the LF generator.
This setting affects all analog modulations which use the LF generator as the internal
modulation source.
Remote command:
[:SOURce]:LFOutput<ch>:FREQuency on page 300
ɸM Sensitivity
Displays the input sensitivity of the externally applied modulation signal at the MOD
EXT input in RAD/V.
The modulation deviation entered with ɸM Deviation"ɸM Deviation" is achieved with 1
Volt (=Upeak) of the input signal.
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Modulation
Note: The input voltage must not exceed 1.1 Vp otherwise modulation distortions
occur.
Remote command:
[:SOURce<hw>]:PM:SENSitivity? on page 311
PhiM Ext Coupling
Selects the coupling mode ("AC" or "DC") for the external modulation signal.
Note: Coupling for external feed via input MOD EXT can be set independently for all
modulations using the external modulation signal.
"AC"
Disconnects the DC voltage component and uses only the AC component of the modulation signal.
"DC"
Uses the modulation signal with both components, AC and DC.
Remote command:
[:SOURce<hw>]:PM:EXTernal:COUPling on page 310
Ext. Impedance
(Source "External" only)
Sets the impedance for the external modulation signal, applied at the MOD EXT connector.
You can select 600 Ohm or high (>100 kOhm).
This setting affects all analog modulations which use the external modulation signal.
Remote command:
[:SOURce<hw>]:INPut:MODext:IMPedance on page 298
5.4.5 Pulse Modulation (PM)
As modulation signal, you can either use the signal of the internal pulse generator or
an externally supplied signal. In case of external source, the external signal is input via
the PULSE EXT connector at the rear of the instrument. In case of internal source, this
connector can be used as external trigger or gate signal input for internal pulse modulation. The polarity and input impedance of the connector can be selected.
The pulse signal is output at the PULSE VIDEO connector at the rear of the instrument.
Automatic Level Control is deactivated with pulse modulation!
When pulse modulation is activated, the R&S SMC deactivates ALC automatically
("ALC OFF", i.e. switches to "Sample & Hold" state).
The "Sample&Hold" state opens the ALC loop, and disables the automatic control of
the output level. The level modulator is set directly.
However, to correct the output level, the R&S SMC executes a "Sample & Hold" measurement after each change of frequency or level settings.
The level is decreased by 30 dB during "Sample & Hold" measurement.
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Instrument Function
Modulation
5.4.5.1
Pulse Modulation Settings
► To access the "Pulse Modulation" settings, select "Modulation > config... > Pulse
Modulation".
The dialog contains all parameters for configuring a pulse modulation signal, comprising the signal source, pulse generator and trigger settings.
Depending on the selected modulation source, the provided parameters vary:
●
"Source Pulse Generator"
Displays the parameters for configuring the pulse generator signal, which in turn
vary according to the selected "Mode > Single / Double ...".
Note: Extended features as the generation of double pulse signals or selectable
trigger mode require option R&S SMC-K23.
●
"External"
Enables you to configure the polarity of an externally supplied pulse modulation
signal.
Note: The pulse generator settings in this dialog are mirrored from the actual "Pulse
Generator" dialog of the "Mod Gen" block. Therefore find the description on the access
and the corresponding parameters under in Chapter 5.5.4.1, "Pulse Generator Settings", on page 186.
State
Activates pulse modulation.
When the internal modulation source (pulse generator) is selected, the pulse generator
is switched on automatically and the video/sync signal is output at the PULSE VIDEO
output at the rear of the instrument. Signal output can be switched off in the "Pulse
Generator" dialog (see Chapter 5.5.4, "Pulse Generator", on page 186).
Remote command:
[:SOURce<hw>]:PULM:STATe on page 328
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Modulation Generator and LF Output
Source
Selects the modulation signal source for pulse modulation.
"Pulse Generator"
Uses the pulse generator as modulation signal source.
Uses the internally generated rectangular signal pulse modulation.
"External"
Uses an externally applied modulation signal.
The external modulation signal is input via the PULSE EXT connector.
Remote command:
[:SOURce<hw>]:PULM:SOURce on page 328
Polarity
(External Source only)
Selects the polarity of the modulation signal.
"Normal"
The RF signal is On while the level is high at the modulation input.
"Inverse"
The RF level is Off if the level is high at the modulation input.
Remote command:
[:SOURce<hw>]:PULM:POLarity on page 327
5.5 Modulation Generator and LF Output
5.5.1 Overview of LF Generator
The internal modulation generator of the instrument provides a sinusodial LF modulation signal without additional equipment options. The corresponding key data, as for
example the frequency range, is specified under "Modulation sources" in the data
sheet.
You can use the internal LF signal as modulation signal source for the analog modulations, as for example the amplitude modulation. The signal applies to all modulations
which are using the internal modulation signal. Therefore, any modification of the LF
signal impacts all currently active modulations immediately.
To configure the LF generator signal, see Chapter 5.5.2.1, "LF Output Dialog",
on page 180. However, you can also configure the LF signal directly in the settings
dialogs of the analog modulations.
An internal pulse generator enables you to generate single or double pulse signals,
see Chapter 5.5.4, "Pulse Generator", on page 186.
The R&S SMC also provides the configured LF signal at the corresponding output connector, for example as modulation signal source for interconnected instruments.
5.5.2 LF Output
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Instrument Function
Modulation Generator and LF Output
► To open the "LF Generator / Output" dialog, select "Mod Gen > Configure > LF
Generator / Output" or use the MENU key under "Mod Gen".
The dialog provides access to the configuration of the internal modulation generators, and you can activate the output of the LF signal
Alternatively, you can perform the settings also in the correpsonding dialogs of the
analog modulations, like "Amplitude Modulation". The configured LF signal applies
to all modulations which use the internal modulation sources, and to the LF output.
The remote commands required to define these settings are described in Chapter 7.13.6, "SOURce:LFOutput Subsystem", on page 299.
5.5.2.1
LF Output Dialog
LF Output State
Activates the LF output. This setting has no effect on the modulations.
The modulation signal is output at the LF OUTPUT connector of the instrument.
Remote command:
[:SOURce]:LFOutput[:STATe] on page 302
LF Output Voltage
Sets the voltage (peak) of the LF output signal.
Remote command:
[:SOURce]:LFOutput:VOLTage on page 307
LF Gen Freq
Sets the frequency of the LF generator.
This setting affects all analog modulations which use the LF generator as the internal
modulation source.
Remote command:
[:SOURce]:LFOutput<ch>:FREQuency on page 300
5.5.3 LF Frequency Sweep
The "LF Frequency Sweep" dialog is used to configure and activate an LF frequency
sweep signal.
To open the "LF Frequency Sweep" dialog, select "Mod Gen > Configure > LF Frequency Sweep" or use the MENU key under "Mod Gen".
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Instrument Function
Modulation Generator and LF Output
The LF sweep mode is activated and the sweep mode is selected. The buttons are
used to reset the LF sweep (all sweep modes) or to execute the LF sweep ("Single"
mode).
The sweep range, sweep spacing and dwell time are set in the bottom of the section.
State
Activates the LF frequency sweep signal generation.
Note: Activating the LF sweep automatically deactivates other sweeps.
Remote command:
[:SOURce<hw>]:LFOutput:FREQuency:MODE on page 301
Mode
Selects the LF frequency sweep mode.
If you change the sweep mode during the execution, the signal generator stops the
sweep and starts with the next trigger event at the initial value.
The "Reset Sweep" button sets the sweep to the start value.
"Auto"
Generates a continuously repeating sweep signal immediately after
activating the sweep mode.
The sweep steps are performed atomatically, controlled by the dwell
time, see " Dwell Time - LF Sweep " on page 185.
Example:
SOUR:LFO:SWE:FREQ:MODE AUTO
TRIG0:SWE:SOUR AUTO
SOUR:LFO:FREQ:MODE SWE
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Modulation Generator and LF Output
"Single"
Generates a single sweep cycle after a trigger event.
The sweep steps within the cycle are performed automatically, controlled by the dwell time. If one cycle is completed, the instrument
waits for the next trigger event.
To trigger the sweep, use "Execute Single Sweep" button, or the corresponding remote control commands, for example *TRG.
Example:
SOUR:LFO:SWE:FREQ:MODE AUTO
TRIG0:SWE:SOUR SING
SOUR:LFO:FREQ:MODE SWE
SOUR:LFO:SWE:FREQ:EXEC
"Step"
Generates the sweep signal step-by-step, manually triggered.
To perform the sweep steps, enter the frequency value under Current
Freq .
Example:
SOUR:LFO:SWE:FREQ:MODE MAN
SOUR:LFO:FREQ:MODE SWE
SOUR:LFO:SWE:FREQ:SPAC LIN
SOUR:LFO:SWE:FREQ:STEP:LIN 1E34
SOUR:LFO:FREQ:MAN 12 kHz
The value entered with command
SOUR:LFO:SWE:FREQ:STEP:LIN|LOG sets the step width.
The value entered with command SOUR:LFO:FREQ:MAN has no
effect, the command only sets the next sweep step. In remote control
only a step-by-step sweep from start to stop frequency is possible.
"Extern Single"
Generates a single sweep cycle when an a external trigger event
occurs.
The sweep steps within the cycle are performed automatically, controlled by the dwell time. If one cycle is completed, the instrument
waits for the next trigger event.
To trigger the sweep, apply an external trigger signal.
Refer to the description of the rear panel for information on the connectors for external trigger signal input (see Chapter 2.2, "Rear Panel
Tour", on page 21).
Example:
SOUR:LFO:SWE:FREQ:MODE AUTO
TRIG0:SWE:SOUR EXT
SOUR:LFO:FREQ:MODE SWE (External trigger)
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Instrument Function
Modulation Generator and LF Output
"Extern Step"
Generates the sweep signal step-by-step, manually triggered.
To trigger a sweep step, apply an external trigger signal. The step
width corresponds to the step width set for the rotary knob.
Example:
SOUR:LFO:SWE:FREQ:MODE AUTO
TRIG0:SWE:SOUR EXT
SOUR:LFO:FREQ:MODE SWE (External trigger)
"Extern Start/
Stop"
Generates a continuously repeating sweep signal that is started,
stopped and restarted by subseqeunt external trigger events. The
sweep steps are performed automatically, controlled by the dwell
time.
Refer to the description of the rear panel for information on the connectors for the external trigger signal input (see Chapter 2.2, "Rear
Panel Tour", on page 21).
Example:
SOUR:LFO:SWE:FREQ:MODE AUTO
TRIG0:SWE:SOUR EAUT
SOUR:LFO:FREQ:MODE SWE (External trigger)
Remote command:
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:MODE on page 303
:TRIGger<hw>[:SWEep]:SOURce on page 367
[:SOURce<hw>]:LFOutput:FREQuency:MODE on page 301
Execute Single Sweep
Starts a sweep manually. This trigger button is displayed in "Single" mode.
Example:
SOUR:LFO:SWE:FREQ:MODE AUTO
TRIG:LFFS:SWE:SOUR SING
TRIG:LFFS
Remote command:
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:EXECute on page 302
:TRIGger<hw>:LFFSweep:IMMediate on page 366
:TRIGger<hw>:LFFSweep on page 365
:TRIGger<hw>[:IMMediate] on page 369
Reset Sweep
Resets a sweep.
With the next trigger event, the sweep starts with at the initial value.
Remote command:
[:SOURce<hw>]:SWEep:RESet[:ALL] on page 343
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Start Freq
Sets the start frequency.
Remote command:
[:SOURce<hw>]:LFOutput:FREQuency:STARt on page 301
Stop Freq
Sets the stop frequency.
Remote command:
[:SOURce<hw>]:LFOutput:FREQuency:STOP on page 302
Current Freq
Displays the current frequency.
In sweep "Step" mode, the parameter is editable and you can enter frequency for the
next step.
Remote command:
[:SOURce<hw>]:LFOutput:FREQuency:MANual on page 300
Spacing
Selects the mode for the calculation of the frequency sweep intervals.
"Linear"
Takes the frequency value entered as an absolute value in Hz
"Logarithmic"
Takes the value entered as a lograithmic value, that means as a constant fraction of teh current frequency in %.
Remote command:
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:SPACing on page 305
Shape
Selects the waveform shape of the sweep signal.
"Sawtooth"
The sweep runs from the start to the stop frequency. Each subsequent sweep starts at the start frequency, that means the shape of
the sweep sequence resembles a sawtooth.
"Triangle"
The sweep runs from start to stop frequency and back, that means
the shape of the sweep resembles a triangle. A subsequent sweep
starts at the start frequency.
Remote command:
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:SHAPe on page 305
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Retrace - LF Frequency Sweep
Activates that the signal changes to the start frequency value while it is waiting for the
next trigger event.
You can enable this feature, when you are working with sawtooth shapes in sweep
mode "Single" or "External Single", see Mode .
Remote command:
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:RETRace on page 304
Step Lin/Log - LF Sweep
Sets the step width for the individual frequency sweep steps.
At each step this value is added to the current frequency.
Depending on the Spacing mode you have set, the corresponding parameter is displayed.
"Step Lin"
The step width is a constant value in Hz.
Remote command:
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP[:LINear] on page 306
"Step Log"
The step width is determined logarithmically in %, that means as a
constant fraction of the current frequency.
Remote command:
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP:LOGarithmic
on page 307
Dwell Time - LF Sweep
Defines the duration of the individual sweep steps.
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The "Dwell Time" set by the user is used as the step time of the sweep. The effective
net dwell time is shorter, reduced by the setting time. This setting time may be greater
than the time specified in the data sheet.
Note:
It is recommended to switch off the display update for optimum sweep performance
especially with short dwell times (see Chapter 5.2.3.6, "Display Update", on page 87).
Remote command:
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:DWELl on page 302
Ext. Trigger Input Slope
Sets the polarity of the active slope of an externally applied instrument trigger.
This setting affects the PULSE EXT/INST TRIG input (BNC connector at the rear of the
instrument).
"Positive"
activates the rising edge of the trigger signal.
"Negative"
activates the falling edge of the trigger signal.
Remote command:
[:SOURce]:INPut:TRIGger:SLOPe on page 298
5.5.4 Pulse Generator
The "Pulse Generator" dialog is used to configure and activate a pulse modulation signal.
5.5.4.1
Pulse Generator Settings
To access the pulse generator settings ...
► Select "Mod Gen > config... > Pulse Generator" or use the MENU key under "Mod
Gen".
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Alternatively, the R&S SMC provides the pulse generator parameters in the "Pulse
Modulation" dialog accessed via the "Modulation" block.
The dialog provides the settings for the pulse characteristics and trigger mode.
Depending on the selected modulation source and pulse mode the provided
parameters vary.
Note: Extended features as the generation of double pulse signals with selectable
pulse widths and periods, or selectable trigger mode require option R&S SMC-K23.
Video Sync Signal State - Pulse Generator
Switches on/off the output of the video/sync signal at the PULSE VIDEO connector.
The signal output and the pulse generator are automatically switched on with activation
of pulse modulation if pulse generator is selected as modulation source. The signal
output can be switched off subsequently.
Pulse modulation of the RF carrier is activated in the "Pulse modulation" menu of the
"Modulation" block.
Remote command:
[:SOURce<hw>]:PGENerator:STATe on page 308
Pulse Mode - Pulse Generator
Sets the mode of the pulse generator.
"Single"
A single pulse is generated in one pulse period.
"Double"
Two pulses are generated in one pulse period. Additional settings for
the double pulse are available in the menu.
Remote command:
[:SOURce<hw>]:PULM:MODE on page 326
Pulse Period - Pulse Generator
Sets the period of the generated pulse. The period determines the repetition frequency
of the internal signal.
Remote command:
[:SOURce<hw>]:PULM:PERiod on page 327
Pulse Width - Pulse Generator
Sets the width of the generated pulse. The width determines the pulse length. The
pulse width must be at least 20 ns less than the set pulse period.
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Remote command:
[:SOURce<hw>]:PULM:WIDTh on page 329
Pulse Delay - Pulse Generator
(External trigger only)
Sets the pulse delay. The pulse delay determines the time that elapses after a trigger
event before pulse modulation starts. The pulse delay is not effective for double pulse
generation.
Remote command:
[:SOURce<hw>]:PULM:DELay on page 325
Double Pulse Width - Pulse Generator
(Double Pulse only)
Sets the width of the second pulse.
Remote command:
[:SOURce<hw>]:PULM:DOUBle:WIDTh on page 326
Double Pulse Delay - Pulse Generator
(Double Pulse only)
Sets the delay from the start of the first pulse to the start of the second pulse.
Remote command:
[:SOURce<hw>]:PULM:DOUBle:DELay on page 326
Trigger Mode - Pulse Generator
Selects the trigger mode for pulse modulation.
Note: An external trigger signal is supplied via the PULSE EXT connector.
"Auto"
The pulse generator signal is generated continuously.
"Ext Triggered"
The pulse generator signal is triggered by an external trigger event.
"Ext Gated"
The pulse generator signal is gated by an external gate signal.
Remote command:
[:SOURce<hw>]:PULM:TRIGger:MODE on page 329
External Trigger Input Slope - Pulse Generator
(External Trigger only)
Sets the polarity of the active slope of an applied trigger signal.
"Positive"
The pulse generator is triggered on the positive slope of the external
trigger signal.
"Negative"
The pulse generator is triggered on the negative slope of the external
trigger signal.
Remote command:
[:SOURce<hw>]:PULM:TRIGger:EXTernal:SLOPe on page 329
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Gate Input Polarity - Pulse Generator
(Trigger Mode External Gated only)
Selects the polarity of the Gate signal.
The signal is supplied via the PULSE EXT connector.
"Normal"
The pulse signal is generated while the gate signal is high.
"Inverse"
The pulse signal is generated while the gate signal is low.
Remote command:
[:SOURce<hw>]:PULM:TRIGger:EXTernal:GATE:POLarity on page 328
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Remote Control Interfaces and Protocols
6 Remote Control Basics
This chapter provides basic information on operating an instrument via remote control.
6.1 Remote Control Interfaces and Protocols
The instrument supports different interfaces for remote control. The following table
gives an overview.
Table 6-1: Remote control interfaces and protocols
Interface
Protocols, VISA*) address string
Remarks
Local Area Network (LAN)
Protocols:
●
HiSLIP High-Speed LAN Instrument
Protocol (IVI-6.1)
VISA*) address string:
TCPIP::host address::
hislip0[::INSTR]
●
VXI-11
VISA*) address string:
TCPIP::host address[::
LAN device name][::INSTR]
●
socket communication (Raw Ethernet,
simple telnet)
VISA*) address string:
TCPIP::host address[::
LAN device name]::<port>::
SOCKET
A LAN connector is located on the front or rear panel of the
instrument, or both.
Serial Interface
VISA*) address string:
ASRL[0-9][::INSTR]
GPIB (IEC/IEEE
Bus Interface)
VISA*) address string:
GPIB::primary address[::INSTR]
(no secondary address)
The interface is based on TCP/IP and supports various protocols.
For a description of the protocols refer to:
●
Chapter 6.1.3.1, "HiSLIP Protocol", on page 194
●
Chapter 6.1.3.2, "VXI-11 Protocol", on page 194
●
Chapter 6.1.3.3, "Socket Communication", on page 194
For a description of the interface, refer to Chapter 6.1.5, "Serial
Interface", on page 196.
Optional GPIB bus interfaces according to standard IEC 625.1/
IEEE 488.1 are located on the rear panel of the instrument.
For a description of the interface, refer to Chapter 6.1.6, "GPIB
Interface (IEC/IEEE Bus Interface)", on page 196.
Note: Within this interface description, the term GPIB is used as
a synonym for the IEC/IEEE bus interface.
*) VISA is a standardized software interface library providing input and output functions to communicate with instruments. A VISA
installation on the controller is a prerequisite for remote control over LAN (when using VXI-11 or HiSLIP protocol), USB and serial
interface. For remote control via socket communication VISA installation is optional. For more information, see Chapter 6.1.1,
"VISA Libraries", on page 191.
Rohde & Schwarz provides the standardized I/O software library R&S VISA for communication via TCP/IP (LAN: HiSlip, VXI-11 and raw socket) or USB (USBTMC) interfaces.
R&S VISA is available for download at the Rohde & Schwarz website http://
www.rohde-schwarz.com/rsvisa.
How to configure the remote control interfaces, see Chapter 6.2, "Starting a Remote
Control Session", on page 198.
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SCPI (Standard Commands for Programmable Instruments)
SCPI commands - messages - are used for remote control. Commands that are not
taken from the SCPI standard follow the SCPI syntax rules. The instrument supports
the SCPI version 1999. The SCPI standard is based on standard IEEE 488.2 and aims
at the standardization of device-specific commands, error handling and the status registers. The tutorial "Automatic Measurement Control - A tutorial on SCPI and IEEE
488.2" from John M. Pieper (R&S order number 0002.3536.00) offers detailed information on concepts and definitions of SCPI.
Tables provide a fast overview of the bit assignment in the status registers. The tables
are supplemented by a comprehensive description of the status registers.
6.1.1 VISA Libraries
VISA is a standardized software interface library providing input and output functions to
communicate with instruments. Thus, you can configure the interface and must not
adjust the application program to the used interface. The I/O channel (LAN or TCP/IP,
USB, GPIB,...) is selected at initialization time with the channel-specific address string
("VISA resource string"), or by a defined VISA alias (short name). See also Chapter 6.1, "Remote Control Interfaces and Protocols", on page 190 for an overview.
Instrument access via VXI-11 or HiSLIP protocols is achieved from high level programming platforms using VISA as an intermediate abstraction layer. VISA encapsulates
the low-level VXI or GPIB function calls and thus makes the transport interface transparent for the user.
A VISA installation is a prerequisite for remote control using the following interfaces:
●
LAN Interface using Chapter 6.1.3, "LAN Interface", on page 192
●
LAN interface using Chapter 6.1.3.2, "VXI-11 Protocol", on page 194
●
Chapter 6.1.4, "USB Interface", on page 195
●
Chapter 6.1.6, "GPIB Interface (IEC/IEEE Bus Interface)", on page 196
●
Chapter 6.1.5, "Serial Interface", on page 196
Instrument access via the LAN socket protocol or GPIB connections can be operated
both, with or without the VISA library.
See also Chapter 6.1.3.3, "Socket Communication", on page 194 and Chapter 6.1.6,
"GPIB Interface (IEC/IEEE Bus Interface)", on page 196.
For more information about VISA, refer to the user documentation.
6.1.2 Messages
The messages transferred on the data lines are divided into the following categories:
●
Interface messages
Interface messages are transmitted to the instrument on the data lines, with the
attention line being active (LOW). They are used to communicate between the controller and the instrument. Interface messages can only be sent by instruments that
have GPIB bus functionality. For details see the sections for the required interface.
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●
Instrument messages
Instrument messages are employed in the same way for all interfaces, if not indicated otherwise in the description. Structure and syntax of the instrument messages
are described in Chapter 6.3, "SCPI Command Structure", on page 212. A detailed
description of all messages available for the instrument is provided in the chapter
"Remote Control Commands".
There are different types of instrument messages, depending on the direction they
are sent:
–
Commands
–
Instrument responses
Commands
Commands (program messages) are messages the controller sends to the instrument.
They operate the instrument functions and request information. The commands are
subdivided according to two criteria:
●
●
According to the effect they have on the instrument:
–
Setting commands cause instrument settings such as a reset of the instrument or setting the frequency.
–
Queries cause data to be provided for remote control, e.g. for identification of
the instrument or polling a parameter value. Queries are formed by directly
appending a question mark to the command header.
According to their definition in standards:
–
Common commands: their function and syntax are precisely defined in standard IEEE 488.2. They are employed identically on all instruments (if implemented). They refer to functions such as management of the standardized status registers, reset and self-test.
–
Instrument control commands refer to functions depending on the features of
the instrument such as frequency settings. Many of these commands have also
been standardized by the SCPI committee. These commands are marked as
"SCPI confirmed" in the command reference chapters. Commands without this
SCPI label are device-specific; however, their syntax follows SCPI rules as permitted by the standard.
Instrument responses
Instrument responses (response messages and service requests) are messages the
instrument sends to the controller after a query. They can contain measurement
results, instrument settings and information on the instrument status.
6.1.3 LAN Interface
To be integrated in a LAN, the instrument is equipped with a LAN interface, consisting
of a connector, a network interface card and protocols. For remote control via a network, the PC and the instrument must be connected via the LAN interface to a common network with TCP/IP network protocol. They are connected using a commercial
RJ45 cable. The TCP/IP network protocol and the associated network services are
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preconfigured on the instrument. Software for instrument control and (for specified protocols only) the VISA program library must be installed on the controller.
VISA library
Instrument access via VXI-11 or HiSLIP protocols is achieved from high level programming platforms using VISA as an intermediate abstraction layer. VISA encapsulates
the low level VXI or GPIB function calls and thus makes the transport interface transparent for the user. See Chapter 6.1.1, "VISA Libraries", on page 191 for details.
IP address
Only the IP address or the computer name (LAN device name) is required to set up the
connection. The IP address/computer name is part of the "visa resource string" used
by the programs to identify and control the instrument.
Forms of the VISA resource string:
●
TCPIP::host address[::LAN device name][::INSTR]
●
TCPIP::host address::port::SOCKET
Where:
●
TCPIP designates the network protocol used
●
host address is the IP address or host name of the device
●
LAN device name defines the protocol and the instance number of a subinstrument:
–
inst0 selects the VXI-11 protocol (optional, default)
–
hislip0 selects the newer HiSLIP protocol
●
INSTR indicates the instrument resource class (optional)
●
port determines the used port number
●
SOCKET indicates the raw network socket resource class
Example:
●
Instrument has the IP address 192.1.2.3; the valid resource string using VXI-11
protocol is:
TCPIP::192.1.2.3::INSTR
●
The DNS host name is RSSM1; the valid resource string is:
TCPIP::RSSM1::hislip0 (HiSLIP)
TCPIP::RSSM1::INSTR (VXI-11)
●
A raw socket connection can be established using:
TCPIP::192.1.2.3::5025::SOCKET
Identifying instruments in a network
If several instruments are connected to the network, each instrument has its own IP
address and associated resource string. The controller identifies these instruments by
the resource string.
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6.1.3.1
HiSLIP Protocol
The HiSLIP (High Speed LAN Instrument Protocol) is the successor protocol for
VXI-11 for TCP-based instruments specified by the IVI foundation. The protocol uses
two TCP sockets for a single connection - one for fast data transfer, the other for nonsequential control commands (e.g. Device Clear or SRQ).
HiSLIP has the following characteristics:
●
High performance as with raw socket network connections
●
Compatible IEEE 488.2 support for Message Exchange Protocol, Device Clear,
Serial Poll, Remote/Local, Trigger, and Service Request
●
Uses a single IANA registered port (4880), which simplifies the configuration of firewalls
●
Supports simultaneous access of multiple users by providing versatile locking
mechanisms
●
Usable for IPv6 or IPv4 networks
Using VXI-11, each operation is blocked until a VXI-11 device handshake returns.
However, using HiSLIP, data is sent to the device using the "fire and forget" method
with immediate return. Thus, a successful return of a VISA operation such as
viWrite() does not guarantee that the instrument has finished or started the requested command, but is delivered to the TCP/IP buffers.
For more information see also the application note:
1MA208: Fast Remote Instrument Control with HiSLIP
6.1.3.2
VXI-11 Protocol
The VXI-11 standard is based on the ONC RPC (Open Network Computing Remote
Procedure Call) protocol which in turn relies on TCP/IP as the network/transport layer.
The TCP/IP network protocol and the associated network services are preconfigured.
TCP/IP ensures connection-oriented communication, where the order of the
exchanged messages is adhered to and interrupted links are identified. With this protocol, messages cannot be lost.
6.1.3.3
Socket Communication
An alternative way for remote control of the software is to establish a simple network
communication using sockets. The socket communication, also referred to as "Raw
Ethernet communication", does not necessarily require a VISA installation on the
remote controller side. It is available by default on all operating systems.
The simplest way to establish socket communication is to use the built-in telnet program. The telnet program is part of every operating system and supports a communication with the software on a command-by-command basis. For more convenience and
to enable automation by means of programs, user-defined sockets can be programmed.
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Socket connections are established on a specially defined port. The socket address is
a combination of the IP address or the host name of the instrument and the number of
the port configured for remote-control. All R&S SMC use port number 5025 for this purpose. The port is configured for communication on a command-to-command basis and
for remote control from a program.
6.1.3.4
LAN Interface Messages
In the LAN connection, the interface messages are called low–level control messages.
These messages can be used to emulate interface messages of the GPIB bus.
Command
Long term
Effect on the instrument
&ABO
Abort
Aborts processing of the commands just received.
&DCL
Device Clear
Aborts processing of the commands just received and
sets the command processing software to a defined initial
state. Does not change the instrument setting.
&GTL
Go to Local
Transition to the "local" state (manual control). (The
instrument automatically returns to remote state when a
remote command is sent UNLESS &NREN was sent
before.)
&GTR
Go to Remote
Enables automatic transition from local state to remote
state by a subsequent remote command (after &NREN
was sent).
&GET
Group Execute Trigger
Triggers a previously active instrument function (e.g. a
sweep). The effect of the command is the same as with
that of a pulse at the external trigger signal input.
&LLO
Local Lockout
Disables transition from remote control to manual control
by means of the front panel keys.
&NREN
Not Remote Enable
Disables automatic transition from local state to remote
state by a subsequent remote command. (To re-activate
automatic transition use &GTR.)
&POL
Serial Poll
Starts a serial poll.
6.1.4 USB Interface
For remote control via the USB connection, the PC and the instrument must be connected via the USB type B interface. A USB connection requires the VISA library to be
installed. VISA detects and configures the R&S instrument automatically when the
USB connection is established. You do not have to enter an address string or install a
separate driver.
USB address
The used USB address string is:
USB::<vendor ID>::<product ID>::<serial number>[::INSTR]
Where:
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●
<vendor ID> is the vendor ID for Rohde&Schwarz
●
<product ID> is the product ID for the R&S instrument
●
<serial number> is the individual serial number on the rear of the instrument
Example:
USB::0x0AAD::0x006E::100001::INSTR
0x0AAD is the vendor ID for Rohde&Schwarz
0x006E is the product ID for the R&S SMC
100001 is the serial number of the particular instrument
6.1.5 Serial Interface
Remote control via the serial interface is possible either via RS232 interface or via a
Bluetooth connection. The controller/Bluetooth device and the instrument must be connected via an external USB/serial-adapter (see recommended extras, data sheet) and
a serial crossover (null modem) cable. A USB connection requires the VISA library to
be installed on the controller. VISA detects and configures the R&S SMC automatically
when the USB connection is established.
Serial address
The used serial address string is:
ASRL[0-9][::INSTR]
Where ASRL[0-9] determines the number of the COM port on the controller side, that
has to be used for the serial connection.
Access via a bluetooth device requires the entry of the bluetooth pin in addition (see
Chapter 5.2.3.15, "Security", on page 99).
To enable an error-free and correct data transmission, the parameters of the generator
and the controller must have the same setting. The serial interface is preset for a baud
rate 115200, no parity and one stop bit. The parameters can be manually changed in
"Remote Channel Settings" dialog (see Chapter 5.2.3.12, "Remote Channel Settings",
on page 95).
6.1.6 GPIB Interface (IEC/IEEE Bus Interface)
To be able to control the instrument via the GPIB bus, the instrument and the controller
must be linked by a GPIB bus cable. A GPIB bus card, the card drivers and the program libraries for the programming language used must be provided in the controller.
The controller must address the instrument with the GPIB bus address (see Chapter 6.1.6.2, "GPIB Instrument Address", on page 198).
Characteristics
The GPIB interface is described by the following characteristics:
●
Up to 15 instruments can be connected
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●
The total cable length is restricted to a maximum of 15 m; the cable length between
two instruments should not exceed 2m.
●
A wired "OR"-connection is used if several instruments are connected in parallel,
since the slowest instrument determines the speed.
Any connected IEC bus cable must be terminated by an instrument or controller.
6.1.6.1
GPIB Interface Messages
Interface messages are transmitted to the instrument on the data lines, with the attention line (ATN) being active (LOW). They are used for communication between the
controller and the instrument and can only be sent by a computer which has the function of a GPIB bus controller. GPIB interface messages can be further subdivided into:
●
Universal commands: act on all instruments connected to the GPIB bus without
previous addressing
●
Addressed commands: only act on instruments previously addressed as listeners
Universal Commands
Universal commands are encoded in the range 10 through 1F hex. They affect all
instruments connected to the bus and do not require addressing.
Command
Effect on the instrument
DCL (Device Clear)
Aborts the processing of the commands just received and sets the command processing software to a defined initial state. Does not change the
instrument settings.
IFC (Interface Clear) *)
Resets the interfaces to the default setting.
LLO (Local Lockout)
The "Local" softkey is disabled. Manual operation is no longer available
until GTL is executed.
SPE (Serial Poll Enable)
Ready for serial poll.
SPD (Serial Poll Disable)
End of serial poll.
PPU (Parallel Poll Unconfigure)
End of the parallel-poll state.
*) IFC is not a real universal command, it is sent via a separate line; however, it also affects all instruments
connected to the bus and does not require addressing
Addressed Commands
Addressed commands are encoded in the range 00 through 0F hex. They only affect
instruments addressed as listeners.
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6.1.6.2
Command
Effect on the instrument
GET (Group Execute Trigger)
Triggers a previously active instrument function (e.g. a sweep).
The effect of the command is the same as with that of a pulse at
the external trigger signal input.
GTL (Go to Local)
Transition to the "local" state (manual control).
GTR (Go to Remote)
Transition to the "remote" state (remote control).
PPC (Parallel Poll Configure)
Configures the instrument for parallel poll.
SDC (Selected Device Clear)
Aborts the processing of the commands just received and sets the
command processing software to a defined initial state. Does not
change the instrument setting.
GPIB Instrument Address
In order to operate the instrument via remote control, it must be addressed using the
GPIB address. The remote control address is factory preset, but it can be changed if it
does not fit in the network environment. For remote control, addresses 0 through 30
are allowed. The GPIB address is maintained after a reset of the instrument settings.
Changing the GPIB address of the instrument
The GPIB address can be changed manually or using a remote control command.
1. Manually: press the SETUP key.
2. Select "Remote > GPIB".
3. Enter the GPIB address.
4. Remotely: use the remote control command:
SYST:COMM:GPIB:ADDR 18
6.2 Starting a Remote Control Session
The instrument and the controller have to be connected with the suitable cable and
switched on.
A remote control program must open a connection to the instrument (using VISA functionality), before it can send commands to and receive device responses from the
instrument.
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Instrument Address
In order to operate the instrument via remote control it must be addressed using the
defined interface address. See Chapter 6.1.3, "LAN Interface", on page 192, Chapter 6.1.4, "USB Interface", on page 195, Chapter 6.1.5, "Serial Interface", on page 196
or Chapter 6.1.6, "GPIB Interface (IEC/IEEE Bus Interface)", on page 196 for details.
The VISA resource strings are indicated in the "Setup > Remote Channel Settings"
menu.
Securing the display
To prevent unauthorized personnel from reading the display, you can disable the frequency and level display explicitly. This is useful when you remotely control the instrument from a different location.
For information on how to disable the frequency and level display, refer to "Annotation
Frequency" on page 103 and "Annotation Amplitude" on page 103.
Refer to Chapter 6.2.3, "Examples", on page 200 for practical examples on setting up
of a remote control link and starting of a remote control session.
6.2.1 Switching to Remote Control
After switching on, the instrument is usually in the local state and can be operated via
the front panel controls (for instruments equipped with a display), a mouse and an
external keyboard.
Starting remote control
1. Send a command from a controller to the instrument.
The instrument changes to remote state as soon as it receives the command from
the controller.
Note: If you have sent &NREN before, the automatic transition from local state to
manual control by a subsequent remote command is disabled (use &GTR to enable
it again).
In remote state, operation via the front panel or via mouse and keyboard is disabled. The status line indicates the "REMOTE" state.
The instrument remains in the remote state until it is reset to the local state, see
Chapter 6.2.2, "Returning to Manual Operation", on page 200).
Tip: Switching from manual operation to remote control and vice versa does not
affect the other instrument settings.
2. Although operation via front panel, mouse and keyboard is disabled, the dialog
boxes can still be opened, for example to verify settings. The buttons and setting
fields are grayed out and cannot be activated.
Additionally, you can disable the access to the dialogs with the command
SYST:KLOC ON to protect the instrument against unauthorized readings.
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3. To prevent unintentional return to manual operation, disable the LOCAL key of the
instrument with the &LLO command (see Chapter 6.1.3.4, "LAN Interface Messages", on page 195).
The instrument switches to "REM-LLO" state.
The automatic transition from local state to remote state by a subsequent remote
command, and the command *GTL are disabled.
To return to manual mode is only possible via remote control.
4. Unlock the LOCAL key with &GTR.
6.2.2 Returning to Manual Operation
Before returning to manual control, command processing must be completed. Otherwise, the instrument switches back to remote control immediately.
To return to manual operation, perform one of the following:
●
Press the LOCAL key on the front panel.
●
Select "Setup > Remote Control Channels > Local".
●
While using the socket communication, terminate the remote control session.
●
Send the interface command &GTL via the remote control interface.
Use the &GTR to enable the LOCAL key if it is locked.
6.2.3 Examples
This sections provides examples for setting up the remote control connection, and
starting a remote control session.
This section assumes basic knowledge of programming and operation of the controller.
A description of the interface commands can be obtained from the corresponding manuals.
6.2.3.1
Remote Control over GPIB
The program example in this section is written in VISUAL BASIC. A condition for programming in VISUAL BASIC is that the modules NIGLOBAL (Niglobal.bas) and
VBIB32 (Vbib_32.bas) are added to the projects.
Drivers for instrument, e.g. IVI-COM and LabVIEW drivers, are available in the download area of the product website (http://www.rohde-schwarz.com/en/products/
test_and_measurement/product_categories/signal_generation/).
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Starting a remote control session over GPIB
As a prerequisite, the GPIB address of the instrument, which is factory-set to 28, must
not have been changed.
1. Connect instrument and controller using GPIB cable and switch them on.
2. Execute following commands on the controller:
a) Open port to the instrument
CALL IBFIND("DEV1", generator%)
b) Inform controller about instrument address
CALL IBPAD(generator%, 28)
c) Reset instrument
CALL IBWRT(generator%, "*RST;*CLS")
d) Set instrument to new address
CALL IBWRT(generator%, "SYST:COMM:GPIB:ADDR 18")
e) Inform controller about new address
CALL IBPAD(generator%, 18)
The GPIB address of the instrument is changed.
3. To return to manual operation sent CALL IBLOC (generator%) or press the
LOCAL key at the front panel.
6.2.3.2
Remote Control over LAN using VXI-11 Protocol
In this example, the I/O software library R&S VISA from Rohde & Schwarz is used to
set up a LAN remote control link and remotely control the R&S SMC. R&S VISA is running on a controller PC with Windows operating system. When the connection is set up
you can send commands to the instrument, and receive the responses.
The remote control connection requires a VISA installation but no additional hardware
on the controller PC. The LAN I/O channel is selected at initialization time using the
VISA resource string (also referred to as "address string"). A VISA alias (short name) is
used to replace the complete resource string. The host address is either the
R&S SMC's hostname or IP address. See also Chapter 6.1.3, "LAN Interface",
on page 192.
In this example, it is assumed that:
●
A LAN remote control link between the controller and the R&S SMC is already set
up.
●
The R&S VISA program is installed on the remote PC, see "http://www.rohdeschwarz.com/rsvisa > RS VISA Release Notes".
Configuring the controller
To remote control the R&S SMC, we use the R&S VISA Tester application.
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The instrument is preconfigured for networks using DHCP (dynamic host configuration
protocol). If this configuration is used, enter the computer name in the position of the IP
address.
To enable the external controller to communicate with the R&S SMC via TCP/IP protocol, set up a remote control link as follows:
1. Make sure that the controller and the instrument are connected in the network (network cable) and switched on.
2. On the controller, start "R&S VISA > Tester 32bit" or "R&S VISA > Tester 64bit",
respectively.
3. In the menu bar, select "Choose VISA Implementation > Rohde & Schwarz Visa".
4. Select "Rohde & Schwarz Visa" and confirm with "OK".
5. In the menu bar, select "Find Resource" to search for the instrument in the LAN.
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6. Select "VXI-11" and "Find Resources".
R&S VISA scans the network for connected instruments and lists all detected instuments in the "Resource" list.
Note: The search may take some time, particularly in large networks.
7. Select the required instrument and confirm with "Select".
The "Find and select resource" dialog closes and R&S VISA indicates the instruments IP address in the "Resource" field of the main application window.
8. As an alternative to the IP address, you can assign an alias name to the
R&S SMC:
a) In the menu bar, select "RsVisaConfig".
b) In the toolbar, select "+" to access the "VISA Rexource String Composer".
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c) Fill in the "Alias" name, the "VISA Resource String" and the "Device IP Address
or host name" as shown in the figure, and confirm with "OK".
The "Alias" name is assigned to the instrument.
d) Close the dialog.
The R&S SMC is now registered in the program and can be addressed via the
resource string or alias name.
9. In the main window, select "Connect".
R&S VISA establishes the connection to the R&S SMC.
Now you can send settings to configure the instrument and receive its responses.
Note: If the connection cannot be set up, R&S VISA displays an error in the log
view. For information on how to proceed when network failures occur, see Chapter 9.5, "Resolving Network Connection Failures", on page 378.
For further information on the functions to read and write to an open session, as
well as the utility applications the software provides, see the R&S VISA User Manual.
Starting a remote control over LAN (using VXI-11)
To set the instrument to remote control, you can use the addressed command &GTR, or
send any command from the controller.
1. Start the R&S VISA Tester and establish the connection to the R&S SMC, see
"Configuring the controller" on page 201.
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2. In the R&S VISA "Basics" tab, enter a SCPI command, e.g. "*IDN?" and confirm
with "Query".
The instrument is switched to remote control when it receives a command from the
controller.
3. Select "Read" to obtain the instrument response.
Tip: If the "Show Log" checkbox is checked R&S VISA displays each VISA function
call in the log-view on the left. If you check the "Write Log" checkbox the log-view
entry is written to the log file as well. You can operate the log-view in two modes:
the "Live Mode" shows only the most recent messages whereas the "View Mode"
allows you to scroll the history.
4. To set, e.g. the frequency, enter SOUR1:FREQ 4 GHz and select "Write".
To check the performed setting, SOUR1:FREQ? and select "Read".
The instrument response is 4000000000, i.e. the frequency is returned in Hz.
While remote control is active, the "Remote" icon in the status bar indicates that the
instrument is in remote control mode. The operation via the front panel or via
mouse and keyboard are locked, allowing a remote control program to be performed without interruption.
On the display, keys and entry fields are grayed out and cannot be activated or
modified, but you can still open dialogs, for example to verify settings.
5. To disable the access to the dialogs, use the command SYST:KLOC ON.
6. To prevent unintentional return to manual operation, use the command &LLO.
See also Chapter 6.1.3.4, "LAN Interface Messages", on page 195.
The instrument switches to "Remote LLO" state. The LOCAL key is disabled.
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7. To enable the LOCAL key, use the command &GTR.
8. To return to manual operation, see Chapter 6.2.2, "Returning to Manual Operation", on page 200.
Tip: Switching from manual operation to remote control and vice versa does not
affect the other instrument settings.
6.2.3.3
Remote Control over LAN using Socket Communication
This chapter provides an example on how to establish a remote control connection
over telnet protocol and a simple sockets-based program example that can be further
developed.
Setting up a Telnet Connection
To control the software, only a telnet program is required. The telnet program is part of
every operating system.
1. To establish a Telnet connection with the R&S SMC, start the telnet program.
2. Enter the access string to connect to the instrument and confirm with ENTER.
The access string is composed of the open command short form) and the socket
address. The socket address is a combination of the IP address or the host name
of the R&S SMC and the number of the port configured for remote-control via telnet. The R&S SMC uses the port number 5025 for remote connection via Telnet.
Example: o 10.113.1.150 5025
The connection to the instrument is set up and you can send remote-control commands.
3. Even if the cursor is not visible on the screen, enter blind a remote-control command and confirm with "Enter".
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After the first remote-control command has been sent, the instrument is in the
"REMOTE" state, i.e. instrument control from the front panel or via mouse and keyboard is disabled and "REMOTE" is displayed in the status line.
Telnet program examples
The following program example shows a simple TcpClient class that is intended to
explain on how to get started with programming of sockets.
The example sets up a socket communication to R&S SMC and opens a simple user
interface, very similar to the telnet, which allows input of commands. To enable real
automation, further development of the program is required.
TcpClient.h
#include <string>
//defines structs for socket handling
#include <netinet/in.h>
using namespace std;
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typedef struct sockaddr_in SockAddrStruct;
typedef struct hostent
HostInfoStruct;
class TcpClient
{
public:
TcpClient();
~TcpClient();
void connectToServer( string &hostname, int port );
void disconnect( );
void transmit( string &txString );
void receive( string &rxString );
string getCurrentHostName( ) const;
int
getCurrentPort( ) const;
private:
string
currentHostName;
int
currentPort;
int
currentSocketDescr;
SockAddrStruct
serverAddress;
HostInfoStruct * currentHostInfo;
bool
clientIsConnected;
int
receiveBufferSize;
};
TcpClient.cpp
#include <string>
//defines structs for socket handling
#include <netinet/in.h>
using namespace std;
typedef struct sockaddr_in SockAddrStruct;
typedef struct hostent
HostInfoStruct;
class TcpClient
{
public:
TcpClient();
~TcpClient();
void connectToServer( string &hostname, int port );
void disconnect( );
void transmit( string &txString );
void receive( string &rxString );
string getCurrentHostName( ) const;
int
getCurrentPort( ) const;
private:
string
currentHostName;
int
currentPort;
int
currentSocketDescr;
SockAddrStruct
serverAddress;
HostInfoStruct * currentHostInfo;
bool
clientIsConnected;
int
receiveBufferSize;
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};
#include <netdb.h>
#include <netinet/in.h>
#include <unistd.h>
#include "TcpClient.h"
TcpClient::TcpClient()
: currentHostName( "" )
, currentPort( 0 )
, currentSocketDescr( 0 )
, serverAddress ( )
, currentHostInfo( NULL )
, clientIsConnected( false )
, receiveBufferSize( 1024 )
{
}
TcpClient::~TcpClient()
{
currentHostInfo = NULL;
}
void TcpClient::connectToServer( string &hostname, int port )
{
currentHostInfo = gethostbyname( hostname.c_str( ) );
if( currentHostInfo == NULL )
{
currentHostName
= "";
currentPort
= 0;
currentHostInfo
= NULL;
clientIsConnected = false;
printf("error connecting host\n" );
}
currentHostName = hostname;
currentPort
= port;
currentSocketDescr = socket(AF_INET, SOCK_STREAM, 0);
if( currentSocketDescr == 0 )
{
currentHostName
= "";
currentPort
= 0;
currentHostInfo
= NULL;
clientIsConnected = false;
printf("can't create socket\n" );
}
serverAddress.sin_family = currentHostInfo->h_addrtype;
serverAddress.sin_port
= htons( currentPort );
memcpy( (char *) &serverAddress.sin_addr.s_addr,
currentHostInfo->h_addr_list[0], currentHostInfo->h_length );
if( connect( currentSocketDescr, ( struct sockaddr *) &serverAddress,
sizeof( serverAddress ) ) < 0 )
{
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throw string("can't connect server\n" );
}
clientIsConnected = true;
}
void TcpClient::disconnect( )
{
if( clientIsConnected )
{
close( currentSocketDescr );
}
currentSocketDescr = 0;
currentHostName
= "";
currentPort
= 0;
currentHostInfo
= NULL;
clientIsConnected
= false;
}
void TcpClient::transmit( string &txString )
{
if( !clientIsConnected )
{
throw string("connection must be established before any data can be sent\n");
}
char * transmitBuffer = new char[txString.length() +1];
memcpy( transmitBuffer, txString.c_str(), txString.length() );
transmitBuffer[txString.length()] = '\n'; //newline is needed!
if( send( currentSocketDescr, transmitBuffer, txString.length() + 1, 0 ) < 0 )
{
throw string("can't transmit data\n");
}
delete [] transmitBuffer;
}
void TcpClient::receive( string &rxString )
{
if( !clientIsConnected )
{
throw string("connection must be established before any data can be received\n");
}
char * receiveBuffer = new char[receiveBufferSize];
memset( receiveBuffer, 0, receiveBufferSize );
bool receiving = true;
while( receiving )
{
int receivedByteCount = recv( currentSocketDescr,
receiveBuffer, receiveBufferSize, 0 );
if( receivedByteCount < 0 )
{
throw string("error while receiving data\n");
}
rxString += string( receiveBuffer );
receiving = ( receivedByteCount == receiveBufferSize );
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}
delete [] receiveBuffer;
}
string TcpClient::getCurrentHostName( ) const
{
return currentHostName;
}
int TcpClient::getCurrentPort( ) const
{
return currentPort;
}
TelnetClient.cpp
#include <iostream>
#include "TcpClient.h"
void printUsage()
{
cout<<"usage: EthernetRawCommand <server-ip> [scpi-command]"<<endl;
}
int main( int argc, char *argv[] )
{
int errorCode
= 0; //no error
bool useSingleCommand = false;
string singleCommand
= "";
string hostname
= "";
int
= 5025;
port
string input
= "";
TcpClient client;
switch( argc )
{
case 3:
useSingleCommand = true;
singleCommand
= argv[2];
case 2:
hostname
= argv[1];
break;
default:
printUsage();
return(-1);
}
try
{
client.connectToServer( hostname, port );
bool terminate = false;
while( !terminate )
{
char buffer[1024];
if( useSingleCommand )
{
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input =
singleCommand; //send string
}
else
{
cin.getline( buffer, 1024 );
input = buffer;
if( input == "end" )
{
terminate = true;
}
}
if( !terminate)
{
client.transmit( input ); //send string
int qPos = input.find( "?", 0 );
//receive string only when needed
if( qPos > 0 )
{
string rcStr = "";
client.receive( rcStr );
cout << rcStr << endl;
}
}
if( useSingleCommand )
{
terminate = true;
}
}
}catch( const string errorString )
{
cout<<errorString<<endl;
}
client.disconnect( );
return errorCode;
}
6.3 SCPI Command Structure
SCPI commands consist of a header and, in most cases, one or more parameters. The
header and the parameters are separated by a "white space" (ASCII code 0 to 9, 11 to
32 decimal, e.g. blank). The headers may consist of several mnemonics (keywords).
Queries are formed by appending a question mark directly to the header.
The commands can be either device-specific or device-independent (common commands). Common and device-specific commands differ in their syntax.
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6.3.1 Syntax for Common Commands
Common (= device-independent) commands consist of a header preceded by an asterisk (*), and possibly one or more parameters.
Table 6-2: Examples of common commands
*RST
RESET
Resets the instrument.
*ESE
EVENT STATUS ENABLE
Sets the bits of the event status enable registers.
*ESR?
EVENT STATUS QUERY
Queries the contents of the event status register.
*IDN?
IDENTIFICATION QUERY
Queries the instrument identification string.
6.3.2 Syntax for Device-Specific Commands
Not all commands used in the following examples are necessarily implemented in the
instrument. For demonstration purposes only, assume the existence of the following
commands for this section:
6.3.2.1
●
DISPlay[:WINDow<1...4>]:MAXimize <Boolean>
●
FORMat:READings:DATA <type>[,<length>]
●
HCOPy:DEVice:COLor <Boolean>
●
HCOPy:DEVice:CMAP:COLor:RGB <red>,<green>,<blue>
●
HCOPy[:IMMediate]
●
HCOPy:ITEM:ALL
●
HCOPy:ITEM:LABel <string>
●
HCOPy:PAGE:DIMensions:QUADrant[<N>]
●
HCOPy:PAGE:ORIentation LANDscape | PORTrait
●
HCOPy:PAGE:SCALe <numeric value>
●
MMEMory:COPY <file_source>,<file_destination>
●
SENSE:BANDwidth|BWIDth[:RESolution] <numeric_value>
●
SENSe:FREQuency:STOP <numeric value>
●
SENSe:LIST:FREQuency <numeric_value>{,<numeric_value>}
●
●
●
Long and short form..............................................................................................213
Numeric Suffixes................................................................................................... 214
Optional Mnemonics............................................................................................. 214
Long and short form
The mnemonics feature a long form and a short form. The short form is marked by
upper case letters, the long form corresponds to the complete word. Either the short
form or the long form can be entered; other abbreviations are not permitted.
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Example:
HCOPy:DEVice:COLor ON is equivalent to HCOP:DEV:COL ON.
Case-insensitivity
Upper case and lower case notation only serves to distinguish the two forms in the
manual, the instrument itself is case-insensitive.
6.3.2.2
Numeric Suffixes
If a command can be applied to multiple instances of an object, e.g. specific channels
or sources, the required instances can be specified by a suffix added to the command.
Numeric suffixes are indicated by angular brackets (<1...4>, <n>, <i>) and are replaced
by a single value in the command. Entries without a suffix are interpreted as having the
suffix 1.
Example:
Definition: HCOPy:PAGE:DIMensions:QUADrant[<N>]
Command: HCOP:PAGE:DIM:QUAD2
This command refers to the quadrant 2.
Different numbering in remote control
For remote control, the suffix may differ from the number of the corresponding selection used in manual operation. SCPI prescribes that suffix counting starts with 1. Suffix
1 is the default state and used when no specific suffix is specified.
Some standards define a fixed numbering, starting with 0. If the numbering differs in
manual operation and remote control, it is indicated for the corresponding command.
6.3.2.3
Optional Mnemonics
Some command systems permit certain mnemonics to be inserted into the header or
omitted. These mnemonics are marked by square brackets in the description. The
instrument must recognize the long command to comply with the SCPI standard. Some
commands are considerably shortened by these optional mnemonics.
Example:
Definition: HCOPy[:IMMediate]
Command: HCOP:IMM is equivalent to HCOP
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Optional mnemonics with numeric suffixes
Do not omit an optional mnemonic if it includes a numeric suffix that is relevant for the
effect of the command.
Example:
Definition:DISPlay[:WINDow<1...4>]:MAXimize <Boolean>
Command: DISP:MAX ON refers to window 1.
In order to refer to a window other than 1, you must include the optional WINDow
parameter with the suffix for the required window.
DISP:WIND2:MAX ON refers to window 2.
6.3.3 SCPI Parameters
Many commands are supplemented by a parameter or a list of parameters. The
parameters must be separated from the header by a "white space" (ASCII code 0 to 9,
11 to 32 decimal, e.g. blank).
The parameters required for each command and the allowed range of values are
specified in the command description.
Allowed parameters are:
●
●
●
●
●
●
6.3.3.1
Numeric Values.....................................................................................................215
Special Numeric Values........................................................................................ 216
Boolean Parameters............................................................................................. 217
Text Parameters....................................................................................................217
Character Strings.................................................................................................. 217
Block Data.............................................................................................................217
Numeric Values
Numeric values can be entered in any form, i.e. with sign, decimal point and exponent.
Values exceeding the resolution of the instrument are rounded up or down. The mantissa may comprise up to 255 characters, the exponent must lie inside the value range
-32000 to 32000. The exponent is introduced by an "E" or "e". Entry of the exponent
alone is not allowed.
Example:
SENS:FREQ:STOP 1500000 = SENS:FREQ:STOP 1.5E6
Units
For physical quantities, the unit can be entered. If the unit is missing, the basic unit is
used. Allowed unit prefixes are:
●
G (giga)
●
MA (mega), MOHM, MHZ
●
K (kilo)
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●
M (milli)
●
U (micro)
●
N (nano)
Example:
SENSe:FREQ:STOP 1.5GHz = SENSe:FREQ:STOP 1.5E9
Some settings allow relative values to be stated in percent. According to SCPI, this unit
is represented by the PCT string.
Example:
HCOP:PAGE:SCAL 90PCT
6.3.3.2
Special Numeric Values
The following mnemonics are special numeric values. In the response to a query, the
numeric value is provided.
●
MIN and MAX: denote the minimum and maximum value.
●
DEF: denotes a preset value which has been stored in the EPROM. This value
conforms to the default setting, as it is called by the *RST command.
●
UP and DOWN: increases or reduces the numeric value by one step. The step
width can be specified via an allocated step command for each parameter which
can be set via UP and DOWN.
●
INF and NINF: INFinity and negative INFinity (NINF) represent the numeric values
9.9E37 or -9.9E37, respectively. INF and NINF are only sent as instrument responses.
●
NAN: Not A Number (NAN) represents the value 9.91E37. NAN is only sent as a
instrument response. This value is not defined. Possible causes are the division of
zero by zero, the subtraction of infinite from infinite and the representation of missing values.
Example:
Setting command: SENSe:LIST:FREQ MAXimum
Query: SENS:LIST:FREQ?
Response: 3.5E9
Queries for special numeric values
The numeric values associated to MAXimum/MINimum/DEFault can be queried by
adding the corresponding mnemonic after the quotation mark.
Example: SENSe:LIST:FREQ? MAXimum
Returns the maximum numeric value as a result.
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6.3.3.3
Boolean Parameters
Boolean parameters represent two states. The "ON" state (logically true) is represented by "ON" or a numeric value 1. The "OFF" state (logically untrue) is represented by
"OFF" or the numeric value 0. The numeric values are provided as the response for a
query.
Example:
Setting command: HCOPy:DEV:COL ON
Query: HCOPy:DEV:COL?
Response: 1
6.3.3.4
Text Parameters
Text parameters observe the syntactic rules for mnemonics, i.e. they can be entered
using a short or long form. Like any parameter, they have to be separated from the
header by a white space. In the response to a query, the short form of the text is provided.
Example:
Setting command: HCOPy:PAGE:ORIentation LANDscape
Query: HCOP:PAGE:ORI?
Response: LAND
6.3.3.5
Character Strings
Strings must always be entered in quotation marks (' or ").
Example:
HCOP:ITEM:LABel "Test1"
HCOP:ITEM:LABel 'Test1'
6.3.3.6
Block Data
Block data is a format which is suitable for the transmission of large amounts of data.
For example, a command using a block data parameter has the following structure:
FORMat:READings:DATA #45168xxxxxxxx
The ASCII character # introduces the data block. The next number indicates how many
of the following digits describe the length of the data block. In the example the 4 following digits indicate the length to be 5168 bytes. The data bytes follow. During the transmission of these data bytes all end or other control signs are ignored until all bytes are
transmitted.
#0 specifies a data block of indefinite length. The use of the indefinite format requires a
NL^END message to terminate the data block. This format is useful when the length of
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the transmission is not known or if speed or other considerations prevent segmentation
of the data into blocks of definite length.
6.3.4 Overview of Syntax Elements
The following tables provide an overview of the syntax elements and special characters.
Table 6-3: Syntax elements
:
The colon separates the mnemonics of a command.
;
The semicolon separates two commands of a command line. It does not alter the path.
,
The comma separates several parameters of a command.
?
The question mark forms a query.
*
The asterisk marks a common command.
''
Quotation marks introduce a string and terminate it (both single and double quotation marks are
possible).
"
#
The hash symbol introduces binary, octal, hexadecimal and block data.
●
Binary: #B10110
●
Octal: #O7612
●
Hexa: #HF3A7
●
Block: #21312
A "white space" (ASCII-Code 0 to 9, 11 to 32 decimal, e.g. blank) separates the header from the
parameters.
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Table 6-4: Special characters
|
Parameters
A vertical stroke in parameter definitions indicates alternative possibilities in the sense of "or". The
effect of the command differs, depending on which parameter is used.
Example:
Definition:HCOPy:PAGE:ORIentation LANDscape | PORTrait
Command HCOP:PAGE:ORI LAND specifies landscape orientation
Command HCOP:PAGE:ORI PORT specifies portrait orientation
Mnemonics
A selection of mnemonics with an identical effect exists for several commands. These mnemonics are
indicated in the same line; they are separated by a vertical stroke. Only one of these mnemonics
needs to be included in the header of the command. The effect of the command is independent of
which of the mnemonics is used.
Example:
DefinitionSENSE:BANDwidth|BWIDth[:RESolution] <numeric_value>
The two following commands with identical meaning can be created:
SENS:BAND:RES 1
SENS:BWID:RES 1
[]
Mnemonics in square brackets are optional and may be inserted into the header or omitted.
Example: HCOPy[:IMMediate]
HCOP:IMM is equivalent to HCOP
{}
Parameters in curly brackets are optional and can be inserted once or several times, or omitted.
Example: SENSe:LIST:FREQuency <numeric_value>{,<numeric_value>}
The following are valid commands:
SENS:LIST:FREQ 10
SENS:LIST:FREQ 10,20
SENS:LIST:FREQ 10,20,30,40
6.3.5 Structure of a Command Line
A command line may consist of one or several commands. It is terminated by one of
the following:
●
<New Line>
●
<New Line> with EOI
●
EOI together with the last data byte
Several commands in a command line must be separated by a semicolon ";".
Example:
MMEM:COPY "Test1","MeasurementXY";:HCOP:ITEM ALL
This command line contains two commands. The first command belongs to the MMEM
system, the second command belongs to the HCOP system. If the next command
belongs to a different command system, the semicolon is followed by a colon.
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Example:
HCOP:ITEM ALL;:HCOP:IMM
This command line contains two commands. Both commands are part of the HCOP
command system, i.e. they have one level in common.
If the successive commands belong to the same system, having one or several levels
in common, the command line can be abbreviated. When abbreviating the command
line, the second command begins with the level below HCOP. The colon after the semicolon is omitted. The abbreviated form of the command line reads as follows:
HCOP:ITEM ALL;IMM
Example:
HCOP:ITEM ALL
HCOP:IMM
A new command line always begins with the complete path.
6.3.6 Responses to Queries
A query is defined for each setting command unless explicitly specified otherwise. It is
formed by adding a question mark to the associated setting command. According to
SCPI, the responses to queries are partly subject to stricter rules than in standard
IEEE 488.2.
●
The requested parameter is transmitted without a header.
Example: HCOP:PAGE:ORI?, Response: LAND
●
Maximum values, minimum values and all other quantities that are requested via a
special text parameter are returned as numeric values.
Example: SENSe:FREQuency:STOP? MAX, Response: 3.5E9
●
Numeric values are output without a unit. Physical quantities are referred to the
basic units or to the units set using the Unit command. The response 3.5E9 in
the previous example stands for 3.5 GHz.
●
Truth values (Boolean values) are returned as 0 (for OFF) and 1 (for ON).
Example:
Setting command: HCOPy:DEV:COL ON
Query: HCOPy:DEV:COL?
Response: 1
●
Text (character data) is returned in a short form.
Example:
Setting command: HCOPy:PAGE:ORIentation LANDscape
Query: HCOP:PAGE:ORI?
Response: LAND
●
Invalid numerical results
In some cases, particularly when a result consists of multiple numeric values, invalid values are returned as 9.91E37 (not a number).
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6.4 Command Sequence and Synchronization
IEEE 488.2 defines a distinction between overlapped and sequential commands:
●
A sequential command is one which finishes executing before the next command
starts executing. Commands that are processed quickly are implemented as
sequential commands. Sequential commands are not implemented in the instrument, however the execution time of most commands is so short that they act as
sequential commands when sent in different command lines.
●
An overlapping command is one which does not automatically finish executing
before the next command starts executing. Usually, overlapping commands take
longer to process and allow the program to do other tasks while being executed. If
overlapping commands do have to be executed in a defined order, e.g. in order to
avoid wrong measurement results, they must be serviced sequentially. Keeping the
order is called synchronization between the controller and the instrument.
Setting commands within one command line, even though they can be implemented as
sequential commands, are not necessarily serviced in the order in which they have
been received. To make sure that commands are actually executed in a certain order,
each command must be sent in a separate command line.
Example: Commands and queries in one message
The response to a query combined in a program message with commands that affect
the queried value is not predictable.
The following commands always return the specified result:
:FREQ:STAR 1GHZ;SPAN 100 :FREQ:STAR?
Result:
1000000000 (1 GHz)
Whereas the result for the following commands is not specified by SCPI:
:FREQ:STAR 1GHz;STAR?;SPAN 1000000
The result could be the value of STARt before the command was sent since the instrument can defer executing the individual commands until a program message terminator is received. The result could also be 1 GHz if the instrument executes commands
as they are received.
As a general rule, send commands and queries in different program messages.
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Example: Overlapping command with *OPC
The instrument implements INITiate[:IMMediate] as an overlapped command.
Assuming that INITiate[:IMMediate] takes longer to execute than *OPC, sending
the following command sequence results in initiating a sweep and, after some time,
setting the OPC bit in the ESR:
INIT; *OPC.
Sending the following commands still initiates a sweep:
INIT; *OPC; *CLS
However, since the operation is still pending when the instrument executes *CLS, forcing it into the "Operation Complete Command Idle" state (OCIS), *OPC is effectively
skipped. The OPC bit is not set until the instrument executes another *OPC command.
6.4.1 Preventing Overlapping Execution
To prevent an overlapping execution of commands, one of the commands *OPC,
*OPC? or *WAI can be used. All three commands cause a certain action only to be
carried out after the hardware has been set. The controller can be forced to wait for the
corresponding action to occur.
Table 6-5: Synchronization using *OPC, *OPC? and *WAI
Command
Action
Programming the controller
*OPC
Sets the Operation Complete bit in the ESR
after all previous commands have been executed.
●
●
●
*OPC?
Stops command processing until 1 is
returned. This occurs when all pending operations are completed.
Send *OPC? directly after the command
whose processing must be terminated before
other commands can be executed.
*WAI
Stops further command processing until all
commands sent before *WAI have been executed.
Send *WAI directly after the command whose
processing must be terminated before other
commands are executed.
Setting bit 0 in the ESE
Setting bit 5 in the SRE
Waiting for service request (SRQ)
Command synchronization using *WAI or *OPC? is a good choice if the overlapped
command takes only little time to process. The two synchronization commands simply
block overlapped execution of the command. Append the synchronization command to
the overlapping command, for example:
SINGle; *OPC?
For time consuming overlapped commands, you can allow the controller or the instrument to do other useful work while waiting for command execution. Use one of the following methods:
*OPC with a service request
1. Set the OPC mask bit (bit no. 0) in the ESE: *ESE 1
2. Set bit no. 5 in the SRE: *SRE 32 to enable ESB service request.
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3. Send the overlapped command with *OPC .
4. Wait for a service request.
The service request indicates that the overlapped command has finished.
*OPC? with a service request
1. Set bit no. 4 in the SRE: *SRE 16 to enable MAV service request.
2. Send the overlapped command with *OPC?.
3. Wait for a service request.
The service request indicates that the overlapped command has finished.
Event status register (ESE)
1. Set the OPC mask bit (bit no. 0) in the ESE: *ESE 1
2. Send the overlapped command without *OPC, *OPC? or *WAI.
3. Poll the operation complete state periodically (with a timer) using the sequence:
*OPC; *ESR?
A return value (LSB) of 1 indicates that the overlapped command has finished.
6.5 Status Reporting System
The status reporting system stores all information on the current operating state of the
instrument, and on errors which have occurred. This information is stored in the status
registers and in the error queue.
You can query both with the commands of the STATus Subsystem.
6.5.1 Hierarchy of the Status Registers
The Figure 6-1 shows the hierarchical structure of information in the status registers
(ascending from left to right).
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Figure 6-1: Graphical overview of the status registers hierarchy
OPER
RQS/MSS
ESB
MAV
QUES
2
1, 0
=
=
=
=
=
=
=
Operation Status Summary Bit
Service Request Generation
Standard Event Status Summary Bit
Message Available in Output Queue
Questionable Status Summary Bit
Error- /Event-Queue
not used
Note: This legend explains the abbreviations to the Status Byte Register.
The R&S SMC uses the following status registers:
●
Status Byte (STB) and Service Request Enable (SRE), see Chapter 6.5.3, "Status Byte (STB) and Service Request Enable Register (SRE)", on page 227.
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●
Standard Event Status, i.e. the Event status Register (ESR) and the Event Status
Enable (ESE), see Chapter 6.5.4, "Event Status Register (ESR) and Event Status
Enable Register (ESE)", on page 228.
●
Questionable Status and Operation Status, the (SCPI status registers, see
Chapter 6.5.2, "Structure of a SCPI Status Register", on page 225, Chapter 6.5.5,
"Questionable Status Register (STATus:QUEStionable)", on page 228 and Chapter 6.5.6, "Operation Status Register (STATus:OPERation)", on page 229.
●
Output-Queue
The output queue contains the messages the instrument returns to the controller. It
is not part of the status reporting system but determines the value of the MAV bit in
the STB and thus is represented in the overview.
●
Error- /Event-Queue
The error-/event-queue contains all errors and events that have occurred in the
past. When reading the queue, the instrument starts with the first occurred error/
event.
All status registers have the same internal structure.
SRE, ESE
The service request enable register SRE can be used as ENABle part of the STB if the
STB is structured according to SCPI. By analogy, the ESE can be used as the ENABle
part of the ESR.
6.5.2 Structure of a SCPI Status Register
Each standard SCPI register consists of 5 parts. Each part has a width of 16 bits and
has different functions. The individual bits are independent of each other, i.e. each
hardware status is assigned a bit number which is valid for all five parts. Bit 15 (the
most significant bit) is set to zero for all parts. Thus the contents of the register parts
can be processed by the controller as positive integers.
Figure 6-2: The status-register model
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Description of the five status register parts
The five parts of a SCPI register have different properties and functions:
●
CONDition
The CONDition part is written into directly by the hardware or the sum bit of the
next lower register. Its contents reflect the current instrument status. This register
part can only be read, but not written into or cleared. Its contents are not affected
by reading.
●
PTRansition / NTRansition
The two transition register parts define which state transition of the CONDition
part (none, 0 to 1, 1 to 0 or both) is stored in the EVENt part.
The Positive-TRansition part acts as a transition filter. When a bit of the
CONDition part is changed from 0 to 1, the associated PTR bit decides whether
the EVENt bit is set to 1.
–
PTR bit =1: the EVENt bit is set.
–
PTR bit =0: the EVENt bit is not set.
This part can be written into and read as required. Its contents are not affected by
reading.
The Negative-TRansition part also acts as a transition filter. When a bit of the
CONDition part is changed from 1 to 0, the associated NTR bit decides whether
the EVENt bit is set to 1.
–
NTR bit =1: the EVENt bit is set.
–
NTR bit =0: the EVENt bit is not set.
This part can be written into and read as required. Its contents are not affected by
reading.
●
EVENt
The EVENt part indicates whether an event has occurred since the last reading, it
is the "memory" of the condition part. It only indicates events passed on by the
transition filters. It is permanently updated by the instrument. This part can only be
read by the user. Reading the register clears it. This part is often equated with the
entire register.
●
ENABle
The ENABle part determines whether the associated EVENt bit contributes to the
sum bit (see below). Each bit of the EVENt part is "ANDed" with the associated
ENABle bit (symbol '&'). The results of all logical operations of this part are passed
on to the sum bit via an "OR" function (symbol '+').
ENABle bit = 0: the associated EVENt bit does not contribute to the sum bit
ENABle bit = 1: if the associated EVENt bit is "1", the sum bit is set to "1" as well.
This part can be written into and read by the user as required. Its contents are not
affected by reading.
Sum bit
The sum bit is obtained from the EVENt and ENABle part for each register. The result
is then entered into a bit of the CONDition part of the higher-order register.
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The instrument automatically generates the sum bit for each register. Thus an event
can lead to a service request throughout all levels of the hierarchy.
6.5.3 Status Byte (STB) and Service Request Enable Register (SRE)
The STatus Byte (STB) is already defined in IEEE 488.2. It provides a rough overview of the instrument status by collecting the pieces of information of the lower registers. A special feature is that bit 6 acts as the sum bit of the remaining bits of the status
byte.
The STB is read using the command *STB? or a serial poll.
The STatus Byte (STB) is linked to the Service Request Enable (SRE) register.
Each bit of the STB is assigned a bit in the SRE. Bit 6 of the SRE is ignored. If a bit is
set in the SRE and the associated bit in the STB changes from 0 to 1, a service
request (SRQ) is generated. The SRE can be set using the command *SRE and read
using the command *SRE?.
Table 6-6: Meaning of the bits used in the status byte
Bit No.
Meaning
0...1
Not used
2
Error Queue not empty
The bit is set when an entry is made in the error queue. If this bit is enabled by the SRE, each
entry of the error queue generates a service request. Thus an error can be recognized and
specified in greater detail by polling the error queue. The poll provides an informative error message. This procedure is to be recommended since it considerably reduces the problems
involved with remote control.
3
QUEStionable status register summary bit
The bit is set if an EVENt bit is set in the QUEStionable status register and the associated
ENABle bit is set to 1. A set bit indicates a questionable instrument status, which can be specified in greater detail by querying the STATus:QUEStionable status register.
4
MAV bit (message available)
The bit is set if a message is available in the output queue which can be read. This bit can be
used to enable data to be automatically read from the instrument to the controller.
5
ESB bit
Sum bit of the event status register. It is set if one of the bits in the event status register is set
and enabled in the event status enable register. Setting of this bit indicates a serious error which
can be specified in greater detail by polling the event status register.
6
MSS bit (master status summary bit)
The bit is set if the instrument triggers a service request. This is the case if one of the other bits
of this registers is set together with its mask bit in the service request enable register SRE.
7
STATus:OPERation status register summary bit
The bit is set if an EVENt bit is set in the OPERation status register and the associated
ENABle bit is set to 1. A set bit indicates that the instrument is just performing an action. The
type of action can be determined by querying the STATus:OPERation status register.
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6.5.4 Event Status Register (ESR) and Event Status Enable Register
(ESE)
The ESR is defined in IEEE 488.2. It can be compared with the EVENt part of a SCPI
register. The event status register can be read out using command *ESR?.
The ESE corresponds to the ENABle part of a SCPI register. If a bit is set in the ESE
and the associated bit in the ESR changes from 0 to 1, the ESB bit in the STB is set.
The ESE register can be set using the command *ESE and read using the command
*ESE?.
Table 6-7: Meaning of the bits used in the event status register
Bit No.
Meaning
0
Operation Complete
This bit is set on receipt of the command *OPC exactly when all previous commands have been
executed.
1
Not used
2
Query Error
This bit is set if either the controller wants to read data from the instrument without having sent a
query, or if it does not fetch requested data and sends new instructions to the instrument
instead. The cause is often a query which is faulty and hence cannot be executed.
3
Device-dependent Error
This bit is set if a device-dependent error occurs. An error message with a number between
-300 and -399 or a positive error number, which denotes the error in greater detail, is entered
into the error queue.
4
Execution Error
This bit is set if a received command is syntactically correct but cannot be performed for other
reasons. An error message with a number between -200 and -300, which denotes the error in
greater detail, is entered into the error queue.
5
Command Error
This bit is set if a command is received, which is undefined or syntactically incorrect. An error
message with a number between -100 and -200, which denotes the error in greater detail, is
entered into the error queue.
6
User Request
This bit is set when the instrument is switched over to manual control.
7
Power On (supply voltage on)
This bit is set on switching on the instrument.
6.5.5 Questionable Status Register (STATus:QUEStionable)
This register contains information on questionable instrument states. Such states may
occur when the instrument is not operated in compliance with its specifications.
To read the register, use the query commands STAT:QUEST:COND? or
STAT:QUEST[:EVEN]?.
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Table 6-8: Meaning of the bits used in the questionable status register
Bit No.
Meaning
0–15
Not used
6.5.6 Operation Status Register (STATus:OPERation)
This condition part contains information on the actions currently being performed by
the instrument, while the event part contains information on the actions performed by
the instrument since the last readout of the register.
To read the register, use the query commands STAT:OPER:COND? or
STAT:OPER[:EVEN]?.
Table 6-9: Meaning of the bits used in the operation status register
Bit No.
Meaning
0
Calibrating
The bit is set during the calibration phase.
1–2
Not used
3
Sweeping
This bit is set during a sweep in automatic or single mode.
4–15
Not used
6.5.7 Application of the Status Reporting System
The purpose of the status reporting system is to monitor the status of one or several
devices in a measuring system. To do this and react appropriately, the controller must
receive and evaluate the information of all devices. The following standard methods
are used:
6.5.7.1
●
Service request (SRQ) initiated by the instrument
●
Serial poll of all devices in the bus system, initiated by the controller to find out
who sent an SRQ and why
●
Query of a specific instrument status by commands
●
Query of the error queue
Service Request
Under certain circumstances, the instrument can send a service request (SRQ) to the
controller. Usually this service request initiates an interrupt at the controller, to which
the control program can react appropriately. An SRQ is always initiated if one or several of bits 2, 4 or 5 of the status byte are set and enabled in the SRE. Each of these
bits combines the information of the error queue or the output buffer. To use the possibilities of the service request effectively, all bits should be set to "1" in the enable registers SRE and ESE.
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Example:
Use command *OPC to generate an SRQ .
*ESE 1 - set bit 0 of ESE (Operation Complete)
*SRE 32 - set bit 5 of SRE (ESB).
After its settings have been completed, the instrument generates an SRQ.
The SRQ is the only possibility for the instrument to become active on its own. Each
controller program should set the instrument such that a service request is initiated in
the case of malfunction. The program should react appropriately to the service request.
6.5.7.2
Serial Poll
In a serial poll, just as with command *STB, the status byte of an instrument is queried.
However, the query is realized via interface messages and is thus clearly faster.
The serial poll method is defined in IEEE 488.1 and used to be the only standard possibility for different instruments to poll the status byte. The method also works for
instruments which do not adhere to SCPI or IEEE 488.2.
The serial poll is mainly used to obtain a fast overview of the state of several instruments connected to the controller.
6.5.7.3
Query of an instrument status
Each part of any status register can be read using queries. There are two types of
commands:
●
The common commands *ESR?, *IDN?, *IST?, *STB? query the higher-level
registers.
●
The commands of the STATus system query the SCPI registers
(STATus:QUEStionable...)
The returned value is always a decimal number that represents the bit pattern of the
queried register. This number is evaluated by the controller program.
Queries are usually used after an SRQ in order to obtain more detailed information on
the cause of the SRQ.
6.5.7.4
Error Queue
Each error state in the instrument leads to an entry in the error queue. The entries of
the error queue are detailed plain text error messages that can be looked up in the
Error Log or queried via remote control using SYSTem:ERRor[:NEXT]?. Each call of
SYSTem:ERRor[:NEXT]? provides one entry from the error queue. If no error messages are stored there any more, the instrument responds with 0, "No error".
The error queue should be queried after every SRQ in the controller program as the
entries describe the cause of an error more precisely than the status registers. Especially in the test phase of a controller program the error queue should be queried regu-
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larly since faulty commands from the controller to the instrument are recorded there as
well.
6.5.8 Reset Values of the Status Reporting System
The following table contains the different commands and events causing the status
reporting system to be reset. None of the commands, except of *RST and
SYSTem:PRESet affect the functional instrument settings. In particular, DCL does not
change the instrument settings.
Table 6-10: Resetting the status reporting system
Event
Switching on supply
voltage
DCL,
SDC
Power-On-StatusClear
(Device
Clear,
Selected
Device
Clear)
*RST or
SYSTem:
PRESet
STATus:
PRESet
*CLS
Effect
0
1
Clear STB, ESR
-
Yes
-
-
-
Yes
Clear SRE, ESE
-
Yes
-
-
-
-
Clear PPE
-
Yes
-
-
-
-
Clear error queue
Yes
Yes
-
-
-
Yes
Clear output buffer
Yes
Yes
Yes
1)
1)
1)
Clear command processing
and input buffer
Yes
Yes
Yes
-
-
-
1) The first command in a command line that immediately follows a <PROGRAM MESSAGE TERMINATOR> clears the output buffer.
6.6 General Programming Recommendations
Initial instrument status before changing settings
Manual operation is designed for maximum possible operating convenience. In contrast, the priority of remote control is the "predictability" of the instrument status. Thus,
when a command attempts to define incompatible settings, the command is ignored
and the instrument status remains unchanged, i.e. other settings are not automatically
adapted. Therefore, control programs should always define an initial instrument status
(e.g. using the *RST command) and then implement the required settings.
Command sequence
As a general rule, send commands and queries in different program messages. Otherwise, the result of the query may vary depending on which operation is performed first
(see also Preventing Overlapping Execution).
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Reacting to malfunctions
The service request is the only possibility for the instrument to become active on its
own. Each controller program should instruct the instrument to initiate a service
request in case of malfunction. The program should react appropriately to the service
request.
Error queues
The error queue should be queried after every service request in the controller program as the entries describe the cause of an error more precisely than the status registers. Especially in the test phase of a controller program the error queue should be
queried regularly since faulty commands from the controller to the instrument are
recorded there as well.
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7 Remote Control Commands
In the following, all remote-control commands will be presented in detail with their
parameters and the ranges of numerical values.
For an introduction to remote control and the status registers, refer to Chapter 6,
"Remote Control Basics", on page 190.
7.1 Conventions used in SCPI Command Descriptions
Note the following conventions used in the remote command descriptions:
●
Command usage
If not specified otherwise, commands can be used both for setting and for querying
parameters.
If a command can be used for setting or querying only, or if it initiates an event, the
usage is stated explicitly.
●
Parameter usage
If not specified otherwise, a parameter can be used to set a value and it is the
result of a query.
Parameters required only for setting are indicated as Setting parameters.
Parameters required only to refine a query are indicated as Query parameters.
Parameters that are only returned as the result of a query are indicated as Return
values.
●
Conformity
Commands that are taken from the SCPI standard are indicated as SCPI confirmed. All commands used by the R&S SMC follow the SCPI syntax rules.
●
Asynchronous commands
A command which does not automatically finish executing before the next command starts executing (overlapping command) is indicated as an Asynchronous
command.
●
Reset values (*RST)
Default parameter values that are used directly after resetting the instrument (*RST
command) are indicated as *RST values, if available.
●
Default unit
This is the unit used for numeric values if no other unit is provided with the parameter.
●
Manual operation
If the result of a remote command can also be achieved in manual operation, a link
to the description is inserted.
7.2 Common Commands
Common commands are described in the IEEE 488.2 (IEC 625-2) standard. These
commands have the same effect and are employed in the same way on different devi-
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Common Commands
ces. The headers of these commands consist of "*" followed by three letters. Many
common commands are related to the Status Reporting System.
Available common commands:
*CLS.............................................................................................................................234
*ESE.............................................................................................................................234
*ESR?...........................................................................................................................234
*IDN?............................................................................................................................235
*IST?............................................................................................................................ 235
*OPC............................................................................................................................ 235
*OPT?...........................................................................................................................235
*PRE............................................................................................................................ 236
*PSC............................................................................................................................ 236
*RCL.............................................................................................................................236
*RST.............................................................................................................................236
*SAV.............................................................................................................................237
*SRE............................................................................................................................ 237
*STB?...........................................................................................................................237
*TRG............................................................................................................................ 237
*TST?........................................................................................................................... 237
*WAI.............................................................................................................................238
*CLS
Clear status
Sets the status byte (STB), the standard event register (ESR) and the EVENt part of
the QUEStionable and the OPERation registers to zero. The command does not
alter the mask and transition parts of the registers. It clears the output buffer.
Usage:
Setting only
*ESE <Value>
Event status enable
Sets the event status enable register to the specified value. The query returns the contents of the event status enable register in decimal form.
Parameters:
<Value>
Range:
0 to 255
*ESR?
Event status read
Returns the contents of the event status register in decimal form and subsequently
sets the register to zero.
Return values:
<Contents>
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Range:
0 to 255
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Common Commands
Usage:
Query only
*IDN?
Identification
Returns the instrument identification.
Return values:
<ID>
"Rohde&Schwarz,<device type>,<serial number>,<firmware version>"
Example:
Rohde&Schwarz,SMC,
1407.6004k02/000000,3.1.17.1-03.01.158
Usage:
Query only
Manual operation:
See "Hardware Options / Software Options" on page 84
*IST?
Individual status query
Returns the contents of the IST flag in decimal form. The IST flag is the status bit
which is sent during a parallel poll.
Return values:
<ISTflag>
0|1
Usage:
Query only
*OPC
Operation complete
Sets bit 0 in the event status register when all preceding commands have been executed. This bit can be used to initiate a service request. The query form writes a "1" into
the output buffer as soon as all preceding commands have been executed. This is
used for command synchronization.
*OPT?
Option identification query
Queries the options included in the instrument. For a list of all available options and
their description refer to the data sheet.
Return values:
<Options>
Usage:
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The query returns a list of options. The options are returned at
fixed positions in a comma-separated string. A zero is returned
for options that are not installed.
Query only
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Common Commands
Manual operation:
See "Hardware Options / Software Options" on page 84
*PRE <Value>
Parallel poll register enable
Sets parallel poll enable register to the indicated value. The query returns the contents
of the parallel poll enable register in decimal form.
Parameters:
<Value>
Range:
0 to 255
*PSC <Action>
Power on status clear
Determines whether the contents of the ENABle registers are preserved or reset when
the instrument is switched on. Thus a service request can be triggered when the instrument is switched on, if the status registers ESE and SRE are suitably configured. The
query reads out the contents of the "power-on-status-clear" flag.
Parameters:
<Action>
0|1
0
The contents of the status registers are preserved.
1
Resets the status registers.
*RCL <Number>
Recall
Loads the instrument settings from an intermediate memory identified by the specified
number. The instrument settings can be stored to this memory using the command
*SAV with the associated number.
It also activates the instrument settings which are stored in a file and loaded using the
MMEMory:LOAD <number>, <file_name.extension> command.
Manual operation:
See " Recall " on page 114
*RST
Reset
Sets the instrument to a defined default status. The default settings are indicated in the
description of commands.
The command is equivalent to SYSTem:PRESet.
Usage:
Setting only
Manual operation:
See "Preset" on page 80
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Common Commands
*SAV <Number>
Save
Stores the current instrument settings under the specified number in an intermediate
memory. The settings can be recalled using the command *RCL with the associated
number.
To transfer the stored instrument settings in a file, use the command :MMEMory:
STORe:STATe.
Manual operation:
See " Save" on page 113
*SRE <Contents>
Service request enable
Sets the service request enable register to the indicated value. This command determines under which conditions a service request is triggered.
Parameters:
<Contents>
Contents of the service request enable register in decimal form.
Bit 6 (MSS mask bit) is always 0.
Range:
0 to 255
*STB?
Status byte query
Reads the contents of the status byte in decimal form.
Usage:
Query only
*TRG
Trigger
Triggers all actions waiting for a trigger event. In particular, *TRG generates a manual
trigger signal. This common command complements the commands of the TRIGger
subsystem.
Usage:
Event
*TST?
Self-test query
Initiates self-tests of the instrument and returns an error code
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Preset Commands
Return values:
<ErrorCode>
integer > 0 (in decimal format)
An error occurred.
(For details see the Service Manual supplied with the instrument).
0
No errors occurred.
Usage:
Query only
*WAI
Wait to continue
Prevents servicing of the subsequent commands until all preceding commands have
been executed and all signals have settled (see also command synchronization and
*OPC).
Usage:
Event
7.3 Preset Commands
The preset commands are not bundled in one subsystem. Therefore, they are listed
separately in this section. In addition, a specific preset command is provided for each
digital standard and for the fader. These specific commands are described in the associated subsystems.
Four presetting actions are available:
●
Activating the default state of all internal instrument functions (*RST on page 236).
Functions that concern the integration of the instrument into a measurement setup
are not changed, e.g. GPIB address or reference oscillator source settings.
●
Activating the preset state of the parameters related to the selected signal path (:
SOURce<hw>:PRESet on page 238)
●
Activating the original state of delivery (factory reset, :SYSTem:FPReset
on page 239). Only functions that are protected by a password remain unchanged
as well as the passwords themselves.
:SOURce<hw>:PRESet
Presets all parameters which are related to the selected signal path.
The following functions are only preset by command *RST: Fading, transient recorder.
Example:
SOUR:PRES
Presets all settings that are related to signal path
Usage:
Event
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Preset Commands
:SYSTem:PRESet
Triggers an instrument reset. It has the same effect as:
●
The PRESET key
●
The *RST command
For an overview of the settings affected by the preset function, see Chapter 5.2.2,
"Default Instrument Settings - Preset Key", on page 79.
Example:
SYST:PRES
All instrument settings (also the settings that are not currently
active) are reset to their default values.
Usage:
Setting only
:SYSTem:FPReset
Triggers an instrument reset to the original state of delivery.
Note: "Factory Preset" resets the "Remote Channel" and network settings to the
default values.
Executing "Factory Preset" via remote control terminates the connection to the instrument, if these settings had been configured to values different to the default ones.
The factory preset function resets nearly all instrument settings. In addition to the regular preset by means of the PRESET key, a "Factory Preset" resets also the following
values:
●
Reference frequency settings ("Ref Oscillator" menu)
●
Power on settings ("Level/EMF" menu)
●
Network settings including hostname ("Setup" menu)
●
Remote channel settings including GPIB address ("Setup" menu)
●
Start/Stop display update ("Setup" menu)
●
Display and keyboard settings ("Setup" menu).
To maintain security, password settings and all settings protected by these passwords
like disabled USB and LAN connections are not changed.
Not affected by the "Factory Preset" are also user data, lists or instrument settings
files, created for example by means of the Save/Recall function.
Example:
SYST:FPR
All instrument settings (also the settings that are not currently
active) are reset to the factory values.
Usage:
Event
Manual operation:
See "Factory Preset" on page 105
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CALibration Subsystem
7.4 CALibration Subsystem
The CALibration system contains the commands for adjustment. Adjustment is triggered by the query commands. The response "0" indicates error-free adjustment, and
the response "1" means that an error occurred during adjustment.
:CALibration<hw>:ALL[:MEASure]?................................................................................. 240
:CALibration<hw>:FMOFfset[:MEASure]?.........................................................................240
:CALibration<hw>:FREQuency[:MEASure]?......................................................................240
:CALibration<hw>:LEVel[:MEASure]?...............................................................................241
:CALibration<hw>:LEVel:EXTern:DATA............................................................................241
:CALibration<hw>:ROSCillator[:DATA]............................................................................. 241
:CALibration<hw>:ALL[:MEASure]? [<Force>]
Starts all internal adjustments that do not require external measurement equipment.
Query parameters:
<Force>
string
Return values:
<Measure>
select
Example:
CAL:ALL:MEAS?
// Response "0"
// Adjustment has been performed successfully
Usage:
Query only
Manual operation:
See "Adjust All" on page 82
:CALibration<hw>:FMOFfset[:MEASure]?
The command starts all adjustment for the FM/PhiM modulator.
Return values:
<Measure>
0|1
Example:
CAL:FMOF?
starts the adjustments for the FM/Phim modulator.
Response: "0"
the adjustments have been performed successfully
Usage:
Query only
Manual operation:
See "Adjust FM Offset" on page 174
:CALibration<hw>:FREQuency[:MEASure]?
Starts all adjustments which affect the frequency.
Return values:
<Measure>
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CALibration Subsystem
Example:
CAL:FREQ:MEAS?
starts the adjustments for maximum frequency accuracy.
Response: "0"
the adjustments have been performed successfully.
Usage:
Query only
Manual operation:
See "Adjust Synthesis" on page 82
:CALibration<hw>:LEVel[:MEASure]? [<Force>]
Starts all adjustments which affect the level.
The acquired correction values improve the settling time and the signal quality.
Query parameters:
<Force>
string
*RST:
Return values:
<Measure>
force
0|1
Example:
CAL:LEV:MEAS?
starts adjustments for maximum level accuracy.
Response: "0"
adjustment has been performed successfully.
Usage:
Query only
Manual operation:
See "Adjust Level" on page 82
:CALibration<hw>:LEVel:EXTern:DATA <Data>
Queries what data has been used for the level calibration.
By default the instrument uses correction data obtained in the factory before delivery.
In addition, customer data can be used for external level correction. The customer data
is obtained using a R&S NRP power sensor. External level correction is a protected
function (see service manual, chapter 2, "Adjustment").
Parameters:
<Data>
FACTory | CUSTomer
*RST:
FACTory
Example:
CAL:LEV:EXT:DATA FACT
selects the use of the data aquired at the factory for external
level correction.
Manual operation:
See "Adjustment Data" on page 133
:CALibration<hw>:ROSCillator[:DATA] <Data>
Sets the calibration value for the custom defined external adjustment.
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DIAGnostic Subsystem
Parameters:
<Data>
integer
Range:
*RST:
0 to INT_MAX
0
7.5 DIAGnostic Subsystem
The DIAGnostic system contains the commands used for instrument diagnosis and
servicing. SCPI does not define any DIAGnostic commands; the commands listed here
are all device-specific. All DIAGnostic commands are query commands which are
not influenced by *RST.
:DIAGnostic<hw>:BGINfo?..............................................................................................242
:DIAGnostic<hw>:BGINfo:CATalog?................................................................................ 243
:DIAGnostic:INFO:OTIMe?..............................................................................................243
:DIAGnostic:INFO:POCount?.......................................................................................... 243
:DIAGnostic<hw>:BGINfo? [<Board>]
Checks the modules available in the instrument using the variant and revision state.
If the command is sent without parameters being specified, a complete list of all modules is returned (the various entries are separated by commas). The length of the list is
variable and depends on the instrument equipment configuration.
If the command is sent with parameters, a list of the specified modules is returned (the
various entries are separated by commas). A list of modules names can be called up
using the command :DIAGnostic<hw>:BGINfo:CATalog? on page 243.
Query parameters:
<Board>
Return values:
<BgInfo>
string
< Module name> <Module stock number incl. variant> <Module
revision> <Module serial number>
Each entry for one module consists of four parts which are separated by space characters.
Example:
DIAG:BGIN
Queries the instrument configuration.
Returns the data of all available modules.
DIAG:BGIN? 'MBRD'
Queries the configuration of the motherboard.
Response: MBRD 1141.3501.02 1.5.3 100023
Module motherboard with part number 1141.3501.01 has revision 1.5.3 and serial number 100023.
Usage:
Query only
Manual operation:
See "Assembly" on page 83
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DISPlay Subsystem
:DIAGnostic<hw>:BGINfo:CATalog?
Queries the names of the assemblies available in the instrument.
Return values:
<Catalog>
string
A complete list of all assemblies is returned (the various entries
are separated by commas). The length of the list is variable and
depends on the instrument equipment configuration.
Example:
DIAG:BGIN:CAT
Queries the names of the assemblies.
Usage:
Query only
:DIAGnostic:INFO:OTIMe?
The command queries the number of operation hours.
Return values:
<OTIMe>
float
Example:
DIAG:INFO:OTIM
queries the operation hours.
Response: 100023
The instrument was operated for 100023 hours up to now.
Usage:
Query only
:DIAGnostic:INFO:POCount?
The command queries the number of power-on events.
Return values:
<Pocount>
float
Example:
DIAG:INFO:POC
queries the number of power on events.
Response: 123
The instrument was switched on for 123 times up to now.
Usage:
Query only
Manual operation:
See "Power On Count" on page 83
7.6 DISPlay Subsystem
The DISPlay subsystem contains the commands to set the power-save mode of the
instrument.
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DISPlay Subsystem
:DISPlay:ANNotation:AMPLitude..................................................................................... 244
:DISPlay:ANNotation:FREQuency....................................................................................244
:DISPlay:ANNotation[:ALL]..............................................................................................244
:DISPlay:DIALog:CLOSe................................................................................................ 245
:DISPlay:DIALog:CLOSe:ALL..........................................................................................245
:DISPlay:DIALog:ID?...................................................................................................... 245
:DISPlay:DIALog:OPEN..................................................................................................245
:DISPlay:PSAVe:HOLDoff...............................................................................................245
:DISPlay:PSAVe[:STATe]................................................................................................246
:DISPlay:UPDate........................................................................................................... 246
:DISPlay:ANNotation:AMPLitude <State>
Indicates asterisks instead of the level values in the status bar.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
1
Example:
DISP:ANN:AMPL ON
Suppresses the level display.
Manual operation:
See "Annotation Amplitude" on page 103
:DISPlay:ANNotation:FREQuency <State>
Indicates asterisks instead of the frequency values in the status bar.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
1
Example:
DISP:ANN:FREQ ON
Supresses the frequency display.
Manual operation:
See "Annotation Frequency" on page 103
:DISPlay:ANNotation[:ALL] <State>
Displays asterisks instead of the level and frequency values in the status bar of the
instrument. This setting is useful when you remotely control the instrument.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
Example:
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1
DISP:ANN:AMPL ON
Shows asterisks instead of frequency and level values.
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DISPlay Subsystem
:DISPlay:DIALog:CLOSe <DialogId>
Closes the specified dialog. To determine the dialog identifier, use command :
DISPlay:DIALog:ID?.
Setting parameters:
<DialogId>
string
Example:
DISP:DIAL:CLOS "<dialog ID>"
Closes the dialog, determined with the "<dialog ID>".
Usage:
Setting only
:DISPlay:DIALog:CLOSe:ALL
Closes all open dialogs.
Example:
DISP:DIAL:CLOS:ALL
Usage:
Event
:DISPlay:DIALog:ID?
Returns the dialog identifiers of the open dialogs in a string separated by blanks.
Return values:
<DialogIdList>
string
Example:
DISP:DIAL:ID?
Response: "<dialog ID(1)> <dialog ID(2)> ...
<dialog ID(n)>"
Returns the dialog identifiers of all opened dialogs.
Usage:
Query only
:DISPlay:DIALog:OPEN <DialogId>
Opens the specified dialog. To determine the dialog identifier, use command :
DISPlay:DIALog:ID?.
Setting parameters:
<DialogId>
string
Example:
DISP:DIAL:OPEN "<dialog ID>"
Opens the dialog, determined with the "<dialog ID>".
Usage:
Setting only
:DISPlay:PSAVe:HOLDoff <HoldoffTimeMin>
Sets the waiting time for the screen-save mode of the display.
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FORMat Subsystem
Parameters:
<HoldoffTimeMin>
integer
Range:
1 to 60
*RST:
10
Default unit: minute
Example:
DISP:PSAV:HOLD 8
Sets the timeout of the screen saver to 8 minutes.
Manual operation:
See "Wait Time" on page 94
:DISPlay:PSAVe[:STATe] <State>
Activates the screen-save mode of the display.
If activated, the display including backlight is switched off after the wait time elapses
and if no entries via front panel, external mouse or external keyboard are made. To set
the wait time, use command :DISPlay:PSAVe:HOLDoff.
This mode is recommended for protecting the display, especially if you operate the
instrument via remote control.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
DISP:PSAV ON
Activates screen saver mode.
Manual operation:
See "Screen Saver Active" on page 94
:DISPlay:UPDate <Update>
Activates the refresh mode of the display.
Parameters:
<Update>
0 | 1 | OFF | ON
*RST:
Example:
1
DISP:UPD ON
Activates automatic update of the display at defined time intervals.
7.7 FORMat Subsystem
The FORMat subsystem contains the commands which determine the format of the
data that the R&S SMC returns to the controller. This affects all query commands
which return a list of numerical data or block data. Reference is made to this in the
descriptions of the commands.
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FORMat Subsystem
:FORMat:BORDer.......................................................................................................... 247
:FORMat[:DATA]............................................................................................................247
:FORMat:SREGister.......................................................................................................247
:FORMat:BORDer <Border>
Determines the sequence of bytes within a binary block. This only affects blocks which
use the IEEE754 format internally.
Parameters:
<Border>
NORMal | SWAPped
NORMal
The instrument expects (with setting commands) and sends
(with queries) the least significant byte of each IEEE754 floatingpoint number first and the most significant byte last.
SWAPped
The instrument expects (with setting commands) and sends
(with queries) the most significant byte of each IEEE754 floatingpoint number first and the least significant byte last.
*RST:
Example:
NORMal
FORM:BORD SWAP
The data is transferred with the most significant bit first.
:FORMat[:DATA] <Data>
Determines the data format which the R&S SMC uses to return data. When data is
transferred from the control computer to the instrument, the instrument detects the data
format automatically. In this case, the value set here is irrelevant.
Parameters:
<Data>
ASCii | PACKed
ASCii
Numerical data is transferred as plain text separated by commas.
PACKed
Numerical data is transferred as binary block data. The format
within the binary data depends on the command. The various
binary data formats are explained in the description of the
parameter types.
*RST:
Example:
ASCii
FORM ASC
The data is transferred as ASCII data.
:FORMat:SREGister <Format>
Determines the numerical format which is returned when the status registers are queried.
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HCOPy Subsystem
Parameters:
<Format>
ASCii | BINary | HEXadecimal | OCTal
ASCii
The register content is returned as a decimal number.
BINary
The register content is returned as a binary number. #B is
placed in front of the number.
HEXadecimal
The register content is returned as a hexadecimal number. #H is
placed in front of the number.
OCTal
The register content is returned as an octal number. #Q is
placed in front of the number.
*RST:
Example:
ASCii
FORM:SREG HEX
The register content is returned as a hexadecimal number.
7.8 HCOPy Subsystem
The HCOPy subsystem contains the commands to generate a hardcopy of the display.
:HCOPy:DATA?............................................................................................................. 248
:HCOPy:DEVice.............................................................................................................249
:HCOPy:DEVice:LANGuage............................................................................................249
:HCOPy[:EXECute]........................................................................................................ 249
:HCOPy:FILE[:NAME].....................................................................................................250
:HCOPy:FILE[:NAME]:AUTO?.........................................................................................250
:HCOPy:FILE[:NAME]:AUTO:DIRectory........................................................................... 250
:HCOPy:FILE[:NAME]:AUTO:DIRectory:CLEar................................................................. 251
:HCOPy:FILE[:NAME]:AUTO:FILE?................................................................................. 251
:HCOPy:FILE[:NAME]:AUTO[:FILE]:DAY?........................................................................251
:HCOPy:FILE[:NAME]:AUTO[:FILE]:DAY:STATe...............................................................252
:HCOPy:FILE[:NAME]:AUTO[:FILE]:MONTh?................................................................... 252
:HCOPy:FILE[:NAME]:AUTO[:FILE]:MONTh:STATe.......................................................... 252
:HCOPy:FILE[:NAME]:AUTO[:FILE]:NUMBer?.................................................................. 253
:HCOPy:FILE[:NAME]:AUTO[:FILE]:PREFix..................................................................... 253
:HCOPy:FILE[:NAME]:AUTO[:FILE]:PREFix:STATe.......................................................... 253
:HCOPy:FILE[:NAME]:AUTO[:FILE]:YEAR?......................................................................254
:HCOPy:FILE[:NAME]:AUTO[:FILE]:YEAR:STATe............................................................ 254
:HCOPy:FILE[:NAME]:AUTO:STATe................................................................................254
:HCOPy:IMAGe:FORMat................................................................................................ 254
:HCOPy:IMAGe:SIZE..................................................................................................... 255
:HCOPy:DATA?
Transfers the hardcopy data directly as a NByte stream to the remote client.
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HCOPy Subsystem
Return values:
<Data>
block data
Example:
HCOP:DEV:LANG JPG
HCOP:DATA?
Transfers the hardcopy to the remote client.
Usage:
Query only
:HCOPy:DEVice <Device>
Defines the output device. The hardcopy can be output in a file. The HCOPy:FILE:…
commands are used for configuration. The file is accessible using the MMEM:.. commands. In addition, the hardcopy data can be directly transferred to the remote client
using command :HCOPy:DATA?.
Parameters:
<Device>
FILE
*RST:
FILE
Example:
HCOP:DEV FILE
The hardcopy is stored in a file.
Manual operation:
See "Destination" on page 107
:HCOPy:DEVice:LANGuage <Language>
Selects the bitmap graphic format for the screenshot.
You can also retrieve the data using command HCOP:DATA?. This command is an
alias to command HCOPy:IMAGe:FORMat.
Parameters:
<Language>
BMP | JPG | XPM | PNG
*RST:
PNG
Example:
HCOP:DEV:LANG BMP
Selects bitmap as image format.
HCOP:FILE '/usb/HCopy'
Defines the directory, path and filename for storing the hardcopy.
HCOP
Triggers the hardcopy generation.
Manual operation:
See " File Options " on page 108
:HCOPy[:EXECute]
Triggers the generation of a hardcopy.
Example:
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HCOP
Triggers the generation of a hardcopy of the current display.
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HCOPy Subsystem
Usage:
Event
Manual operation:
See " Save " on page 110
:HCOPy:FILE[:NAME] <Name>
Creates/selects a file into which the hardcopy is stored.
The path is specified together with the filename. Access to the file via remote control is
possible using the commands of the MMEM subsystem. In contrast, command
HCOPy:DATA? transfers the hardcopy contents directly to the remote client where they
can be further processed.
If automatic file naming is activated, the hardcopy is stored into a file with an automatically generated name (commands HCOPY:FILE[:NAME]:AUTO:…).
Parameters:
<Name>
string
Example:
HCOP:FILE:NAME '/usb/HCopy'
Defines the hardcopy filename.
Manual operation:
See "File Info" on page 108
:HCOPy:FILE[:NAME]:AUTO?
Queries the path including the filename of the file with automatically generated name.
Return values:
<Auto>
string
Example:
See :HCOPy:FILE[:NAME]:AUTO:FILE? on page 251
Usage:
Query only
Manual operation:
See " File Options " on page 108
:HCOPy:FILE[:NAME]:AUTO:DIRectory <Directory>
Sets the directory into which the hardcopy files are stored if auto naming is activated
(HCOP:FILE:AUTO:STAT ON).The directory is created if it does not exist yet.
Parameters:
<Directory>
string
*RST:
.\HCopy
Example:
HCOP:FILE:AUTO:DIR '/usb/'
Defines the destination directory '/usb/'
Manual operation:
See " File Options " on page 108
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HCOPy Subsystem
:HCOPy:FILE[:NAME]:AUTO:DIRectory:CLEar
Deletes all files with extensions "bmp", "img", "png" and "xpm" in the directory set for
automatic naming.
Example:
HCOP:FILE:AUTO:DIR:CLE
Deletes all image files with extensions "bmp", "img", "png" and
"xpm".
Usage:
Event
Manual operation:
See " File Options " on page 108
:HCOPy:FILE[:NAME]:AUTO:FILE?
Queries the filename that what generated using the automatic naming settings. By
default the automatically generated filename is composed of:
<Prefix><YYYY><MM><DD><Number>.<Format>.
Each component can be deactivated/activated separately.
Return values:
<File>
string
Example:
HCOP:DEV:LANG BMP
Selects output format *.bmp.
HCOP:FILE:AUTO:DIR '/usb/'
Defines the destination directory '/usb/'
HCOP:FILE:AUTO:PREF 'gen'
The filename starts with the prefix 'gen'. The usage of automatic naming with prefix and date in the filename is preset (…:
STAT ON).
HCOP
Triggers the generation of a hardcopy of the current trace.
HCOP:FILE:AUTO?
Queries the path including the filename
Response:
/usb/gen101012008001.bmp'
HCOP:FILE:AUTO:FILE?
Queries the filename
Response: 'gen101012008001.bmp'
Usage:
Query only
Manual operation:
See "File Info" on page 108
:HCOPy:FILE[:NAME]:AUTO[:FILE]:DAY?
Queries the day of the current system date which is used in the filename if automatic
naming is activated.
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HCOPy Subsystem
Return values:
<Day>
integer
Range:
*RST:
1 to 31
1
Example:
HCOP:FILE:AUTO:DAY?
Returns the day in the date part of the automatic filename.
Usage:
Query only
:HCOPy:FILE[:NAME]:AUTO[:FILE]:DAY:STATe <State>
Activates the usage of the day in the automatic filename.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
1
Example:
HCOP:FILE:AUTO:DAY:STAT OFF
Deactivates the use of the day in the automatically generated filename.
Manual operation:
See " File Options " on page 108
:HCOPy:FILE[:NAME]:AUTO[:FILE]:MONTh?
Queries the month in the date part in the automatic filename.
Return values:
<Month>
integer
Range:
*RST:
1 to 12
1
Example:
HCOP:FILE:AUTO:MONT?
Queries the month in the date part in the automatic filename.
Usage:
Query only
:HCOPy:FILE[:NAME]:AUTO[:FILE]:MONTh:STATe <State>
Activates the usage of the month in the automatic filename.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
1
Example:
HCOP:FILE:AUTO:MONT:STAT OFF
Deactivates the usage of the month in the automatic filename.
Manual operation:
See " File Options " on page 108
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:HCOPy:FILE[:NAME]:AUTO[:FILE]:NUMBer?
Queries the number in the automatic filename. The number is assigned in such a way
that always the lowest possible value for a unique filename within the selected path is
used.
On initially switching on the device, the number is reset to the lowest possible value.
Starting with number 0 the output directory is scanned for existing files. As long as files
with the same name are existing, the number is incremented by 1. The number is automatically set to a number so that the resulting filename is unique within the selected
path. The current number is not saved in the save recall file but is temporarily stored
within the database. On subsequent saves, the number is incremented.
Return values:
<Number>
integer
Range:
*RST:
0 to 999999
0
Example:
HCOP:FILE:AUTO:NUMB?
Queries the number in the automatic filename.
Usage:
Query only
Manual operation:
See " File Options " on page 108
:HCOPy:FILE[:NAME]:AUTO[:FILE]:PREFix <Prefix>
Sets the prefix part in the automatic filename. The usage of the prefix is activated with
command HCOP:FILE:AUTO:PREF:STAT ON.
Parameters:
<Prefix>
string
*RST:
HCopy
Example:
HCOP:FILE:AUTO:PREF 'Snapshot'
Appends "Snapshot" as prefix to the generated filename.
Manual operation:
See " File Options " on page 108
:HCOPy:FILE[:NAME]:AUTO[:FILE]:PREFix:STATe <State>
Activates the usage of the prefix in the automatic filename. The prefix is entered with
command HCOP:FILE:AUTO:PREF.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
1
Example:
HCOP:FILE:AUTO:PREF:STAT OFF
Deactivates the usage of the prefix in the automatic filename.
Manual operation:
See " File Options " on page 108
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HCOPy Subsystem
:HCOPy:FILE[:NAME]:AUTO[:FILE]:YEAR?
Queries the year in the date part in the automatic filename.
Return values:
<Year>
integer
Range:
*RST:
1784 to 8000
0
Example:
HCOPy:FILE:AUTO:YEAR?
Queries the year in the date part in the automatic filename.
Usage:
Query only
:HCOPy:FILE[:NAME]:AUTO[:FILE]:YEAR:STATe <State>
Activates the usage of the year in the automatic filename.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
1
Example:
HCOP:FILE:AUTO:YEAR:STAT OFF
Deactivates the usage of the year in the automatic filename.
Manual operation:
See " File Options " on page 108
:HCOPy:FILE[:NAME]:AUTO:STATe <State>
Activates/deactivates automatic naming of the hardcopy files.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
1
Example:
HCOP:FILE:AUTO:STAT OFF
Deactivates automatic naming.
Manual operation:
See "Automatic Naming" on page 108
:HCOPy:IMAGe:FORMat <Format>
This command selects the bitmap graphic format for the screenshot. You can also
retrieve the data using command HCOP:DATA?.
This command is an alias to command HCOPy:DEVice:LANGuage.
Parameters:
<Format>
BMP | JPG | XPM | PNG
*RST:
Example:
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PNG
HCOP:IMAG:FORM XPM
Selects the image format XPM.
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KBOard Subsystem
Manual operation:
See " File Options " on page 108
:HCOPy:IMAGe:SIZE <Size>
Selects the image size of the hardcopy. The first value of the size setting defines the
width, the second value the height of the image.
Parameters:
<Size>
string
*RST:
Example:
depends on device
HCOP:IMAG:SIZE 640,480
Sets width and height of the image.
7.9 KBOard Subsystem
The KBOard system contains the commands to set the external keyboard.
:KBOard:LANGuage.......................................................................................................255
:KBOard:LAYout............................................................................................................ 255
:KBOard:LANGuage <Language>
This command selects the keyboard language. The assignment of some keys depends
on the selected language.
Parameters:
<Language>
US | DE
*RST:
US
Example:
KBO:LANG US
selects keyboard language American English.
Usage:
SCPI confirmed
Manual operation:
See "Layout (USB Keyboard Settings)" on page 95
:KBOard:LAYout <Layout>
Selects the keyboard language. The assignment of some keys depends on the
selected language.
Parameters:
<Layout>
CHINese | DANish | DUTCh | DUTBe | ENGLish | ENGUK |
FINNish | FRENch | FREBe | FRECa | GERMan | ITALian |
JAPanese | KORean | NORWegian | PORTuguese | RUSSian |
SPANish | SWEDish | ENGUS
*RST:
Example:
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ENGLish
KBO:LAY US
Activates American English keyboard layout.
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MMEMory Subsystem
Manual operation:
See "Layout (USB Keyboard Settings)" on page 95
7.10 MMEMory Subsystem
The MMEMory subsystem (Mass Memory) contains the commands for managing files
and directories as well as for loading and storing complete instrument settings in files.
The files are stored on the internal flash memory of the instrument or on external USB
memory devices.
The /var/user/ directory can be used to save user-defined data; any subdirectory
structure can be created on /var/user/. Some default subdirectories are predefined,
but can be changed at any time.
The default directory is determined using the command MMEMory:CDIR.
Use the command :SYSTem:MMEMory:PATH:USER? to query the path of the directory for user-defined data.
The /opt directory is a protected and therefore a not accessible system directory. The
files on this directory contain data that must not be changed. Therefore, this directory
should not be accessed, since reconstruction of the system partition will lead to data
loss.
7.10.1 File Naming Conventions
To enable files in different file systems to be used, the following file naming conventions should be observed.
The file name can be of any length and is case-sensitive, meaning it is distinguished
between uppercase and lowercase letters.
The file and the optional file extension are separated by a dot. All letters and numbers
are permitted (numbers are, however, not permitted at the beginning of the file name).
If possible, special characters should not be used. The use of the slashes "\" and "/"
should be avoided since they are used in file paths. A number of names are reserved
for the operating system, e.g. CLOCK$, CON, AUX, COM1...COM4, LPT1...LPT3, NUL
and PRN.
In the R&S SMC all files in which lists and settings are stored are given a characteristic
extension. The extension is separated from the actual file name by a dot (see Chapter 4.7.2.1, "Extensions for User Files", on page 75 for an overview of the file types).
The two characters "*" and "?" function as "wildcards", meaning they are used for
selecting several files. The "?" character represents exactly one character, while the "*"
character represents all characters up to the end of the file name. "*.*" therefore stands
for all files in a directory.
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MMEMory Subsystem
When used in conjunction with the commands, the parameter <file_name> is specified as a string parameter with quotation marks. It can contain either the complete path
including the drive, only the path and the file name, or only the file name. The file name
must include the file extension. The same applies for the parameters
<directory_name> and <path>.
Depending on how much information is provided, either the values specified in the
parameter or the values specified with the command MMEM:CDIR (default directory)
are used for the path and the drive settings in the commands.
Before the instrument settings can be stored in a file, they have to be stored in an intermediate memory using common command *SAV <number>. The specified number is
subsequently used in the :MMEMory:STORe:STATe on page 264 command. Also,
subsequently to loading a file with instrument settings with command :MMEMory:
LOAD:STATe on page 263, these settings have to be activated with the common command *RCL <number>.
7.10.2 Extensions for User Files
The following table lists all available file extensions for user files. The currently available files on the instrument depend on the installed options.
Table 7-1: List of the automatically assigned file extensions in the instrument
Function
List type
Contents
File suffix
Instrument State
Settings
Instrument settings
*.savrcltxt
"User Correction"
List
User-defined level correction values
*.uco
Export Data
*.txt or *.csv
NRP Settings
*.nrp
NRP Settings
Settings
7.10.3 Examples
In these examples, the current instrument setting is stored in the file
test.savrcltxt in the directory /var/user/..
Storing and Loading Current Settings
1. Store the current setting in an intermediate memory with the number 4. This setting
can be called using command *RCL and the associated number of the memory, for
example *RCL 4.
*SAV 4
2. To store the settings in a file in a specific directory, specify the complete path.
MMEM:STOR:STAT 4,"/var/user/test.savrcltxt"
3. To store the settings in a file in the default drive, set the default drive and specify
only the file name.
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MMEMory Subsystem
MMEM:CDIR '/var/user/'*SAV 4
MMEM:STOR:STAT 4,"test.savrcltxt"
4. Load the file test.savrcltxt in the user directory.
MMEM:LOAD:STAT 4,'/var/user/test.savrcltxt'
5. Activate the instrument setting of the file test.savrcltxt.
*RCL 4
Working with Files and Directories
1. Read out all files in the specified directory.
MMEM:CAT? '/usb/user'
Response: 127145265,175325184,"test,DIR,0","temp,DIR,0",
"readme.txt,ASC,1324","state.savrcltxt,STAT,5327",
"waveform.wv,BIN,2342"
the directory /usb/user contains the subdirectories test and temp as well as
the files readme.txt, state.savrcltxt and waveform.wv which have different file types.
Tip: To query only the subdirectories of the current or specified directory, perform:
MMEM:DCAT? '/usb/user'
Response: 'test', 'temp'
To query only the number of subdirectories in the current or specified directory,
perform:
MMEM:DCAT:LENG? '/usb/user'
Response: 2
2. To query the number of files in the current or specified directory, perform:
MMEM:CAT:LENG? '/usb/user'
Response: 3
3. Create a new subdirectory for mass memory storage in the specified directory.
MMEM:MDIR '/usb/new'
4. Copy the file state to a new file.
MMEM:COPY '/var/user/state.savrcltxt','/usb/new'
5. Rename the file state.
MMEM:MOVE 'state.savrcltxt','state_new.savrcltxt'
6. Remove the test directory.
MMEM:RDIR '/usb/test'
7.10.4 Remote Control Commands
:MMEMory:CATalog?..................................................................................................... 259
:MMEMory:CATalog:LENGth?.........................................................................................259
:MMEMory:CDIRectory................................................................................................... 260
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MMEMory Subsystem
:MMEMory:COPY...........................................................................................................260
:MMEMory:DATA........................................................................................................... 261
:MMEMory:DCATalog?................................................................................................... 261
:MMEMory:DCATalog:LENGth?.......................................................................................262
:MMEMory:DELete.........................................................................................................262
:MEMory:HFRee?.......................................................................................................... 262
:MMEMory:LOAD:STATe................................................................................................263
:MMEMory:MDIRectory...................................................................................................263
:MMEMory:MOVE.......................................................................................................... 263
:MMEMory:MSIS............................................................................................................264
:MMEMory:RDIRectory................................................................................................... 264
:MMEMory:STORe:STATe..............................................................................................264
:MMEMory:CATalog? <path>
Returns the content of a particular directory.
Query parameters:
<path>
string
String parameter to specify the directory.
If you leave out the path, the command returns the contents of
the directory selected with :MMEMory:CDIRectory.
The path may be relative or absolute.
Return values:
<UsedDiskSpace>
Byte size of all files in the directory.
<FreeDiskSpace>
Remaining disk space in bytes.
<FileInfo>
<NameFileN>,<SuffixFileN>,<SizeFileN>
List of files, separated by commas
<NameFileN>
Name of the file.
<SuffixFileN>
Type of the file. Possible suffixes are: ASCii, BINary, DIRectory
<SizeFileN>
Size of the file in bytes.
Example:
See "Working with Files and Directories" on page 258.
Usage:
Query only
Manual operation:
See "Directory, File List and File Name" on page 112
:MMEMory:CATalog:LENGth? <Path>
Returns the number of files in the current or in the specified directory.
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MMEMory Subsystem
Query parameters:
<Path>
string
String parameter to specify the directory. If the directory is omitted, the command queries the content of the current directory,
queried with :MMEMory:CDIRectory command.
Return values:
<FileCount>
integer
Number of files.
Example:
See "Working with Files and Directories" on page 258.
Usage:
Query only
:MMEMory:CDIRectory <Directory>
Changes the default directory for mass memory storage. The directory is used for all
subsequent MMEM commands if no path is specified with them.
Parameters:
<Directory>
<directory_name>
String containing the path to another directory. The path can be
relative or absolute.
To change to a higher directory, use two dots '..' .
Example:
See "Working with Files and Directories" on page 258.
Usage:
SCPI confirmed
Manual operation:
See "Directory, File List and File Name" on page 112
:MMEMory:COPY <SourceFile>[,<DestinationFile>]
Copies an existing file to a new file. Instead of just a file, this command can also be
used to copy a complete directory together with all its files.
Setting parameters:
<SourceFile>
string
String containing the path and file name of the source file
<DestinationFile>
string
String containing the path and name of the target file. The path
can be relative or absolute.
If <DestinationFile> is not specified, the <SourceFile> is
copied to the current directory, queried with the :MMEMory:
CDIRectory command.
Note: Existing files with the same name in the destination directory are overwritten without an error message.
Example:
See "Working with Files and Directories" on page 258.
Usage:
Setting only
SCPI confirmed
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MMEMory Subsystem
Manual operation:
See " Copy " on page 116
:MMEMory:DATA <Filename>, <BinaryBlock>
:MMEMory:DATA? <Filename>
The setting command writes the block data <BinaryBlock> to the file identified by
<Filename>.
Set the GPIB-bus terminator to EOI to ensure correct data transfer.
The query command transfers the specified file from the instrument to the GPIB-bus
and then on to the controller. It is important to ensure that the intermediate memory on
the controller is large enough to take the file. The setting for the GPIB-bus terminator is
irrelevant.
Tip: Use this command to read/transfer stored instrument settings or waveforms
directly from/to the instrument.
Parameters:
<BinaryBlock>
#<number><length_entry><data>
#: Hash sign; always comes first in the binary block
<number>: the first digit indicates how many digits the subsequent length entry has
<length_entry>: indicates the number of subsequent bytes
<data>: binary block data for the specified length.
For files with a size with more than nine digits (gigabytes), the
instrument allows the syntax #(<Length>), where <Length>
is the file size in decimal format.
Parameters for setting and query:
<Filename>
string
String parameter to specify the name of the file.
Example:
MMEMory:DATA '/var/user/test.txt',#15hallo
Writes the block data to the file test.txt.
The digit 1 indicates a length entry of one digit; the digit 5 indicate a length of the binary data (hallo) in bytes.
MMEMory:DATA? '/var/user/test.txt'
Sends the data of the file test.txt from the instrument to the
controller in the form of a binary block.
Response: #15hallo
Usage:
SCPI confirmed
:MMEMory:DCATalog? <path>
Returns the subdirectories of a particular directory.
Query parameters:
<path>
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String parameter to specify the directory. If the directory is omitted, the command queries the content of the current directory,
queried with :MMEMory:CDIRectory command.
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Return values:
<Catalog>
<file_entry>
Names of the subdirectories separated by colons. The first two
strings are related to the parent directory.
Example:
See "Working with Files and Directories" on page 258.
Usage:
Query only
:MMEMory:DCATalog:LENGth? [<Path>]
Returns the number of subdirectories in the current or specified directory.
Query parameters:
<Path>
Return values:
<DirectoryCount>
String parameter to specify the directory. If the directory is omitted, the command queries the contents of the current directory,
to be queried with :MMEMory:CDIRectory command.
integer
Number of parent and subdirectories.
Example:
See "Working with Files and Directories" on page 258.
Usage:
Query only
:MMEMory:DELete <Filename>
Removes a file from the specified directory.
Setting parameters:
<Filename>
string
String parameter to specify the name and directory of the file to
be removed.
Example:
See "Working with Files and Directories" on page 258.
Usage:
Event
SCPI confirmed
Manual operation:
See " Cut " on page 116
:MEMory:HFRee?
Returns the used and available memory in Kb.
Return values:
<TotalPhysMemKb> integer
Total physical memory.
<ApplicMemKb>
integer
Application memory.
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MMEMory Subsystem
<HeapUsedKb>
integer
Used heap memory.
<HeapAvailableKb>
integer
Available heap memory.
Usage:
Query only
:MMEMory:LOAD:STATe <SavRclStateNumb>, <file_name>
Loads the specified file stored under the specified name in an internal memory.
After the file has been loaded, the instrument setting must be activated using an *RCL
command.
Setting parameters:
<SavRclStateNumb> Determines to the specific <number> to be used with the *RCL
command, e.g. *RCL 4.
<file_name>
String parameter to specify the file name with extension
*.savrcltxt.
Example:
See "Storing and Loading Current Settings" on page 257.
Usage:
Setting only
Manual operation:
See " Recall " on page 114
:MMEMory:MDIRectory <Directory>
Creates a subdirectory for mass memory storage in the specified directory. If no directory is specified, a subdirectory is created in the default directory. This command can
also be used to create a directory tree.
Setting parameters:
<Directory>
string
String parameter to specify the new directory.
Example:
See "Working with Files and Directories" on page 258.
Usage:
Event
Manual operation:
See "Create New Directory" on page 117
:MMEMory:MOVE <SourceFile>, <DestinationFile>
Moves an existing file to a new location or, if no path is specified, renames an existing
file.
Setting parameters:
<SourceFile>
string
String parameter to specify the name of the file to be moved.
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MMEMory Subsystem
<DestinationFile>
string
String parameters to specify the name of the new file.
Example:
See "Working with Files and Directories" on page 258.
Usage:
Event
SCPI confirmed
Manual operation:
See " Rename " on page 117
:MMEMory:MSIS <Msis>
Defines the drive or network resource (in the case of networks) for instruments with
windows operating system, using msis (MSIS = Mass Storage Identification String).
Note: Instruments with Linux operating system ignore this command, since Linux does
not use drive letter assignment.
Usage:
SCPI confirmed
:MMEMory:RDIRectory <Directory>
Removes an existing directory from the mass memory storage system. If no directory
is specified, the subdirectory with the specified name is deleted in the default directory.
Setting parameters:
<Directory>
string
String parameter to specify the directory to be deleted.
Example:
See "Working with Files and Directories" on page 258.
Usage:
Event
:MMEMory:STORe:STATe <savrcl_state_nr>, <file_name>
Stores the current instrument setting in the specified file.
The instrument setting must first be stored in an internal memory with the same number using the common command *SAV.
Setting parameters:
<savrcl_state_nr>
Corresponds to the specific <number> defined with the *SAV
command, e.g. *SAV 4.
<file_name>
String parameter to specify the file name with extension
*.savrcltxt.
Example:
See "Storing and Loading Current Settings" on page 257.
Usage:
Event
Manual operation:
See " Save" on page 113
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OUTPut Subsystem
7.11 OUTPut Subsystem
The OUTPut system contains the commands which set the properties of the RF output
connector.
The properties of the LF output connector are set in the SOURce:LFOutput Subsystem
system.
:OUTPut<hw>:AFIXed:RANGe:LOWer?........................................................................... 265
:OUTPut<hw>:AFIXed:RANGe:UPPer?............................................................................265
:OUTPut<hw>:AMODe................................................................................................... 266
:OUTPut<hw>:IMPedance?.............................................................................................266
:OUTPut<hw>:PROTection:CLEar................................................................................... 266
:OUTPut<hw>:PROTection:TRIPped?..............................................................................267
:OUTPut<hw>[:STATe]................................................................................................... 267
:OUTPut<hw>[:STATe]:PON........................................................................................... 267
:OUTPut<hw>:AFIXed:RANGe:LOWer?
Queries the minimum level which can be set when the attenuator is fixed, see :
OUTPut<hw>:AMODe.
Return values:
<Lower>
float
Increment: 0.01
Example:
OUTP:AFIX:RANG:LOW?
queries the minimum level for the FIXed setting.
Example:
Response: -50
The minimum level is -50 dBm.
Usage:
Query only
Manual operation:
See " Fixed Range (PEP) In " on page 132
:OUTPut<hw>:AFIXed:RANGe:UPPer?
Queries the maximum level which can be set when the attenuator is fixed, see :
OUTPut<hw>:AMODe.
Return values:
<Upper>
float
Increment: 0.01
Example:
OUTP:AFIX:RANG:UPP?
queries the maximum level for the FIXed setting for the RF output.
Example:
Response: -27
The maximum level is -27 dBm.
Usage:
Query only
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OUTPut Subsystem
Manual operation:
See " Fixed Range (PEP) In " on page 132
:OUTPut<hw>:AMODe <AMode>
Selects the mode of the attenuator at the RF output (Attenuator MODe).
Parameters:
<AMode>
AUTO | FIXed
AUTO
The attenuator is switched automatically. The level settings are
made in the full range.
FIXed
The level settings are made without switching the attenuator.
When this operating mode is switched on, the attenuator is fixed
in its current position and the resulting variation range is defined.
*RST:
AUTO
Example:
POW:ALC ON
activates automatic level control for RF output.
OUTP:AMOD FIX
sets the fixed mode with uninterrupted level for RF output.
Manual operation:
See " Attenuator Mode " on page 131
:OUTPut<hw>:IMPedance?
Queries the impedance of the RF outputs. It enables you to convert the output level
units between V and W. The impedances cannot be changed.
Return values:
<Impedance>
G1K | G50 | G10K
*RST:
G50
Default unit: Ohm
Example:
OUTP:IMP
queries the impedance of RF output.
Response: 50
the impedance is 50 ohms
Usage:
Query only
:OUTPut<hw>:PROTection:CLEar
Resets the protective circuit after it has been tripped. The state of the output is again
determined by OUTPut:STATe.
Example:
OUTP:PROT:CLE
resets the protective circuit for RF output.
Usage:
Event
Manual operation:
See " Overload " on page 147
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R&S®SMC100A
Remote Control Commands
OUTPut Subsystem
:OUTPut<hw>:PROTection:TRIPped?
Queries the state of the protective circuit.
Return values:
<Tripped>
0 | 1 | OFF | ON
*RST:
0
Example:
OUTP:PROT:TRIP
Queries the state of the protective circuit for RF output A.
Response: 0
The protective circuit has not tripped.
Response: 1
The protective circuit has tripped.
Usage:
Query only
Manual operation:
See " Overload " on page 147
:OUTPut<hw>[:STATe] <State>
Activates and deactivates the RF output signal (RF ON / RF OFF).
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
OUTP OFF
deactivates the RF output.
Manual operation:
See "RF On" on page 120
:OUTPut<hw>[:STATe]:PON <Pon>
Selects the state of the RF output when the instrument is switched on.
Parameters:
<Pon>
OFF | UNCHanged
OFF
deactivates the output when the instrument is switched on (RF
OFF).
UNCHanged
restores the initial state of the RF output before the last turn off.
sets the output status as it was when the instrument was
switched off.
*RST:
UNCHanged
Example:
OUTP:PON OFF
RF output A is deactivated when the instrument is switched on.
Manual operation:
See " Power-On State - RF Signal " on page 133
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Remote Control Commands
SENSe, READ and INITiate Subsystems
7.12 SENSe, READ and INITiate Subsystems
The SENSe subsystem contains the commands for configuring the power measurements with R&S NRP-Zxx power sensor(s) connected to the generator. The measurement is started and the measurement result retrieved with the READ command. The
description of this commands is included in the following.
Up to four sensors can be connected to the signal generator. They are distinguished by
means of the suffix under SENSe, that means SENSe [1] ... SENSe 4.
:SENSe<ch>[:POWer]:APERture:DEFault:STATe............................................................. 268
:SENSe<ch>[:POWer]:APERture:TIMe.............................................................................269
:INITiate<ch>[:POWer]:CONTinuous................................................................................269
:READ<ch>[:POWer]?.................................................................................................... 269
:SENSe<ch>[:POWer]:CORRection:SPDevice:STATe....................................................... 270
:SENSe<ch>[:POWer]:DISPlay:PERManent:STATe.......................................................... 270
:SENSe<ch>[:POWer]:DISPlay:PERManent:PRIority.........................................................271
:SENSe<ch>[:POWer]:FILTer:LENGth:AUTO?..................................................................271
:SENSe<ch>[:POWer]:FILTer:LENGth[:USER]..................................................................271
:SENSe<ch>[:POWer]:FILTer:NSRatio.............................................................................272
:SENSe<ch>[:POWer]:FILTer:NSRatio:MTIMe..................................................................272
:SENSe<ch>[:POWer]:FILTer:SONCe..............................................................................273
:SENSe<ch>[:POWer]:FILTer:TYPE................................................................................ 273
:SENSe<ch>[:POWer]:LOGGing:STATe...........................................................................274
:SENSe<ch>[:POWer]:FREQuency..................................................................................274
:SENSe<ch>[:POWer]:OFFSet........................................................................................ 274
:SENSe<ch>[:POWer]:OFFSet:STATe............................................................................. 274
SENSe<ch>[:POWer]:SNUMber?.................................................................................... 275
:SENSe<ch>[:POWer]:SOURce.......................................................................................275
SENSe<ch>[:POWer]:STATus[:DEVice]?......................................................................... 275
SENSe<ch>[:POWer]:SVERsion?....................................................................................276
SENSe<ch>[:POWer]:TYPE?.......................................................................................... 276
:SENSe<ch>[:POWer]:ZERO.......................................................................................... 276
:SENSe<ch>:UNIT[:POWer]............................................................................................277
:SENSe<ch>[:POWer]:APERture:DEFault:STATe <UseDefAp>
Deactivates the default aperture time of the respective sensor.
To specify a user-defined value, use the command :SENSe<ch>[:POWer]:
APERture:TIMe on page 269.
Parameters:
<UseDefAp>
0 | 1 | OFF | ON
*RST:
1
Example:
SENS:POW:APER:DEF:STAT 0
deactivates the default aperture time of the sensor.
Manual operation:
See "Use Default Aperture Time" on page 154
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R&S®SMC100A
Remote Control Commands
SENSe, READ and INITiate Subsystems
:SENSe<ch>[:POWer]:APERture:TIMe <ApTime>
Defines the aperture time (size of the acquisition interval) for the corresponding sensor.
Parameters:
<ApTime>
float
Range:
depends on connected power sensor
Increment: 1E-9
*RST:
depends on connected power sensor
Example:
SENS:POW:APER:TIM 23ms
sets 23 ms aperture time.
Manual operation:
See "Aperture Time" on page 155
:INITiate<ch>[:POWer]:CONTinuous <Continuous>
The command switches the local state of the continuous power measurement by the
R&S NRP-Zxx power sensors on and off. Switching the local state off enhances the
measurement performance during remote control
The remote measurement is triggered by the READ query (command :READ<ch>[:
POWer]? on page 269) which also provides the measurement results. The local state
is not influenced by this command, measurements results can be retrieved with local
state on or off.
Parameters:
<Continuous>
0 | 1 | OFF | ON
*RST:
OFF
Example:
INIT:CONT ON
switches local state of continuous power measurement on.
Manual operation:
See " State " on page 150
:READ<ch>[:POWer]?
The command triggers the measurement with power sensors and provides the power
measurement result of the selected power sensor. The value is provided with the unit
set with command SENSe:UNIT[:POWer].
For certain power sensors, e.g. R&S NRP-Z81, two values are returned, first the value
for the average level and - separated by a comma - the peak level
Note: The local state is not influenced by this command, measurements results can be
retrieved with local state on or off. For long measurement times it is recommended to
use a SRQ (MAV bit) for command synchronization.
Suffix:
<ch>
.
1..3
Return values:
<Power>
string
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Remote Control Commands
SENSe, READ and INITiate Subsystems
Example:
SENS:UNIT DBM
selects unit dBm for presentation of measurement result.
READ1?
queries the measurement result of the sensor connected to the
SENSOR interface.
Response: -45.6246576745440230
-45.6 dBm were measured at the given frequency.
or e.g. for R&S NRP-Z81
Response:
-55.62403263352178,-22.419472478812476
-55,6 dbm is the measured average level, -22. 4 dBm is the
measured peak level at the given frequency
Usage:
Query only
Manual operation:
See " Level (Peak) " on page 151
:SENSe<ch>[:POWer]:CORRection:SPDevice:STATe <State>
The command activates the use of the s-parameters correction data of the selected
power sensor.
Note: For power sensor with attenuator this command is automatically set to ON.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
OFF
Example:
SENS:POW:CORR:SPD:STAT ON
activates the use of the s-parameters correction data of power
sensor 1.
Manual operation:
See " Use SParameter - Power Sensors " on page 139
:SENSe<ch>[:POWer]:DISPlay:PERManent:STATe <State>
The command switches on and off the permanent indication of the power measurement result in the upper right corner of the block diagram. For each sensor, the type of
sensor, the connector, the measurement source and - if set - the offset is indicated.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
ON
Example:
SENS1:POW:DISP:PERM:STAT ON
the permanent viewer is switched on.
Manual operation:
See " Permanent Display State " on page 151
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R&S®SMC100A
Remote Control Commands
SENSe, READ and INITiate Subsystems
:SENSe<ch>[:POWer]:DISPlay:PERManent:PRIority <Priority>
The command selects which power measurement result (average or peak power) is
indicated when permanent display is active.
Parameters:
<Priority>
AVERage | PEAK
*RST:
PEAK
Example:
SENS1:DISP:PERM:STAT ON
the permanent viewer is switched on.
SENS1:DISP:PERM:PRI AVER
the measured average power is indicated.
Manual operation:
See " Display Priority " on page 151
:SENSe<ch>[:POWer]:FILTer:LENGth:AUTO?
The command queries the current filter length for auto filter mode
(:SENSe<[1]...3>:POWer:FILTer:TYPE AUTO)
Return values:
<Auto>
float
Range:
1 to 65536
Example:
SENS1:FILT:TYPE AUTO
selects auto filter mode for the power sensor connected to the
SENSOR connector.
SENS1:FILT:LENG:AUTO?
queries the automatically set filter length.
Response: 1024
Usage:
Query only
Manual operation:
See "Filter Length" on page 154
:SENSe<ch>[:POWer]:FILTer:LENGth[:USER] <User>
The command selects the filter length for user filter mode (SENSe:POWer:FILTer:
TYPE USER). As the filter length works as a multiplier for the time window, a constant
filter length results in a constant measurement time. Values 1 and 2^n are settable.
The time window is fixed to 20 ms.
Parameters:
<User>
float
Range:
*RST:
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R&S®SMC100A
Remote Control Commands
SENSe, READ and INITiate Subsystems
Example:
SENS:FILT:TYPE USER
selects user filter mode.
SENS:FILT:LENG 16
sets a filter length of 16. The resulting measurement time is 640
ms (2x16x20 ms).
Manual operation:
See "Filter Length" on page 154
:SENSe<ch>[:POWer]:FILTer:NSRatio <NSRatio>
The command defines the noise content for fixed noise filter mode
(:SENSe<[1]...3>:POWer:FILTer:TYPE NSRatio). This value determines the
proportion of intrinsic noise in the measured result.
Parameters:
<NSRatio>
float
Range:
0.001 to 1
Increment: 0.001
*RST:
0.01
Example:
SENS1:FILT:TYPE NSR
selects fixed noise filter mode for the power sensor connected to
the SENSOR connector.
SENS1:FILT:NSR 0.2
sets a noise content of 0.2.
Manual operation:
See "Noise Content" on page 154
:SENSe<ch>[:POWer]:FILTer:NSRatio:MTIMe <MTime>
The command defines the timeout for fixed noise filter mode
(:SENSe<[1]...3>:POWer:FILTer:TYPE NSRatio). This value ensures limited
settling times.
Parameters:
<MTime>
float
Range:
Increment:
*RST:
Default unit:
1 to 999.99
0.01
4
s
Example:
SENS1:FILT:TYPE NSR
selects fixed noise filter mode for the power sensor connected to
the SENSOR connector.
SENS1:FILT:NSR .2
sets a noise content of 0.2.
SENS1:FILT:NSR:MTIM 5
limits the settling time to 5 seconds
Manual operation:
See "Timeout" on page 154
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Remote Control Commands
SENSe, READ and INITiate Subsystems
:SENSe<ch>[:POWer]:FILTer:SONCe
The command activates the search for the optimum filter length for the current measurement conditions. The found filter length can be retrieved with command :SENSe:POWer:FILTer:LENGth:USER?. This command is only available for
user filter mode (:SENSe:POWer:FILTer:TYPE USER).
Example:
SENS:FILT:TYPE USER
selects user filter mode.
SENS:FILT:SONC
activates the search for the optimum filter length.
SENS:FILT:LENG?
returns the found optimum filter length.
Response: 128
Usage:
Event
Manual operation:
See "Auto Once" on page 154
:SENSe<ch>[:POWer]:FILTer:TYPE <Type>
The command selects the filter mode. The filter length is the multiplier for the time window and thus directly influences the measurement time.
Parameters:
<Type>
AUTO | USER | NSRatio
AUTO
The filter length is automatically selected depending on the measured value. For high values, a short filter length is selected and
for low values a long filter length is selected.
USER
The filter length is set manually. As the filter length works as a
multiplier for the measurement time, this results in a constant
measurement time.
NSRatio
The filter lenghth (averaging factor) is selected so that the sensor's intrinsic noise (2 standard deviations) does not exceed the
specified noise content. The desired noise content is entered
with command SENSe:FILTer:NSRatio.
To avoid very long settling times when the power is low, the
averaging factor can be limited with the Timeout parameter
(command SENSe:FILTer:NSRatio:MTIMe).
*RST:
AUTO
Example:
SENS:FILT:TYPE AUTO
selects automatic filter selection.
Manual operation:
See " Filter" on page 153
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R&S®SMC100A
Remote Control Commands
SENSe, READ and INITiate Subsystems
:SENSe<ch>[:POWer]:LOGGing:STATe <State>
Activates the recording of the power values, measured by a connected R&S NRP-Z
power sensor.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
SENS:LOGG:STAT ON
activates recording of the power measurement of the first sensor.
Manual operation:
See "Enable Logging" on page 155
:SENSe<ch>[:POWer]:FREQuency <Frequency>
The command sets the RF frequency of the source if the user source is selected
(SENSe[:POWer]:SOURce USER).
Parameters:
<Frequency>
float
*RST:
1 GHz
Example:
SENS:SOUR USER
selects user-defined source.
SENS:FREQ 2.44 GHz
enters the RF frequency of the source which is 2.44 GHz.
Manual operation:
See " Frequency " on page 152
:SENSe<ch>[:POWer]:OFFSet <Offset>
The command enters a level offset which is added to the measured level value after
activation with command SENSe[:POWer]:OFFSet:STATe ON. This allows e.g. an
attenuator in the signal path to be considered.
Parameters:
<Offset>
float
Range:
-100.0 to 100.0
*RST:
0
Default unit: dB
Example:
SENS:POW:OFFS 10.0
sets a level offset of 10 dB
Manual operation:
See " Level Offset " on page 153
:SENSe<ch>[:POWer]:OFFSet:STATe <State>
The command activates the addition of the level offset to the measured value. The
level offset value is set with command SENSe[:POWer]:OFFSet.
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R&S®SMC100A
Remote Control Commands
SENSe, READ and INITiate Subsystems
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
OFF
Example:
SENS1:POW:OFFS 0.4dB
sets a level offset of 0.4 dB
SENS1:POW:OFFS:STAT ON
a level offset of 0.4 dB is added to the measured value.
Manual operation:
See " Level Offset " on page 153
SENSe<ch>[:POWer]:SNUMber?
The command queries the serial number of the sensor.
Return values:
<Snumber>
string
Example:
SENS:SNUM?
queries the serial number.
Usage:
Query only
Manual operation:
See "Current Sensors" on page 87
:SENSe<ch>[:POWer]:SOURce <Source>
The command selects the signal source for the measurement.
Parameters:
<Source>
A | B | USER | RF
*RST:
A
Example:
SENS:SOUR A
selects the RF signal as measurement source. The RF frequency is used as the measurement frequency of the sensor
and the corresponding correction factor is used. The level setting of the instrument serves as reference level of the measurement.
Manual operation:
See " Source " on page 152
SENSe<ch>[:POWer]:STATus[:DEVice]?
The command queries if a sensor is connected to the signal generator.
The sensor is selected by suffix in the keyword SENSe or READ of the command
header. Suffix 1 denotes the sensor connected to the SENSOR connector, suffix 2 the
sensor connected first to one of the USB interfaces and suffix 3 the sensor connected
second to one of the USB interfaces.
Return values:
<DEVice>
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R&S®SMC100A
Remote Control Commands
SENSe, READ and INITiate Subsystems
Example:
SENS:STAT?
queries if a sensor is connected to the instrument.
Response: 1
a sensor is connected to the POWER SENSOR interface.
Usage:
Query only
Manual operation:
See " Sensor " on page 150
SENSe<ch>[:POWer]:SVERsion?
The command queries the software version of the connected R&S NRP power sensor.
Return values:
<Sversion>
string
Example:
SENS:POW:SVER?
queries the software version of the R&S NRP power sensor.
Usage:
Query only
Manual operation:
See "Current Sensors" on page 87
SENSe<ch>[:POWer]:TYPE?
The command queries the type of sensor. The type is automatically detected.
Return values:
<Type>
string
Example:
SENS:TYPE?
queries the type of sensor connected to the POWER SENSOR
connector.
Response: NRP-Z21
the R&S NRP-Z21 sensor is used.
Usage:
Query only
Manual operation:
See "Current Sensors" on page 87
:SENSe<ch>[:POWer]:ZERO
The command activates the autozero function. Zeroing is required in regular interval (at
least once a day) and if the temperature has varied more than about 5 °C, if the sensor
has been replaced or if measurements of signals with very low power are to be performed. The RF power source must be switched off or disconnected from the sensor
before starting the autozero function.
Example:
SENS:ZERO
activates autozero function.
Usage:
Event
Manual operation:
See " Zero - Power Sensors " on page 138
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R&S®SMC100A
Remote Control Commands
SOURce Subsystem
:SENSe<ch>:UNIT[:POWer] <Power>
The command selects the unit used for result query with command READ. The power
sensor provides the measured value in Watt. In which unit the measured value is
returned is selected here and might be either Watt, dBm or dBuV.
Parameters:
<Power>
DBM | DBUV | WATT
*RST:
DBM
Example:
SENS2:UNIT DBM
selects unit dBm for the measured value returned by command
READ.
READ2?
Response: 7.34
7.34 dBm are measured by sensor 2.
Manual operation:
See " Unit " on page 151
7.13 SOURce Subsystem
The SOURce subsystem contains the commands for configuring the digital and analog
signals.
SOURce<hw>
For one-path instruments, the keyword SOURce is optional and can be omitted.
●
●
●
●
●
●
●
●
●
●
●
●
●
●
SOURce:AM Subsystem.......................................................................................277
SOURce:CORRection Subsystem........................................................................ 279
SOURce:FM Subsystem....................................................................................... 288
SOURce:FREQuency Subsystem.........................................................................291
SOURce:INPut Subsystem................................................................................... 298
SOURce:LFOutput Subsystem............................................................................. 299
SOURce:MODulation Subsystem......................................................................... 308
SOURce:PGEN Subsystem.................................................................................. 308
SOURce:PHASe Subsystem................................................................................ 309
SOURce:PM Subsystem.......................................................................................310
SOURce:POWer Subsystem................................................................................ 312
SOURce:PULM Subsystem.................................................................................. 323
SOURce:ROSCillator Subsystem......................................................................... 330
SOURce:SWEep Subsystem................................................................................ 332
7.13.1 SOURce:AM Subsystem
The AM subsystem contains the commands for setting the amplitude modulation.
An external modulation signal is input at the MOD EXT connector.
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R&S®SMC100A
Remote Control Commands
SOURce Subsystem
The settings for the internal modulation source (LF generator) are made in the
SOURce:LFOutput subsystem.
[:SOURce<hw>]:AM[:DEPTh].......................................................................................... 278
[:SOURce<hw>]:AM:EXTernal:COUPling......................................................................... 278
[:SOURce<hw>]:AM:SENSitivity?.................................................................................... 278
[:SOURce<hw>]:AM:SOURce......................................................................................... 279
[:SOURce<hw>]:AM:STATe............................................................................................ 279
[:SOURce<hw>]:AM[:DEPTh] <Depth>
Sets the modulation depth of the amplitude modulation signal in percent.
Parameters:
<Depth>
float
Range:
0 to 100
Increment: See data sheet
*RST:
30
Example:
AM 15PCT
sets the 15% AM modulation depth
Manual operation:
See "AM Depth" on page 172
[:SOURce<hw>]:AM:EXTernal:COUPling <Coupling>
Selects the coupling mode for the external amplitude modulation signal.
Parameters:
<Coupling>
AC | DC
AC
Uses only the AC signal component of the modulation signal.
DC
Uses the modulation signal as it is, with AC and DC.
*RST:
AC
Example:
AM:EXT:COUP AC
selects the coupling mode AC for external amplitude modulation.
Manual operation:
See "AM External Coupling" on page 172
[:SOURce<hw>]:AM:SENSitivity?
Queries the input sensitivity of the externally applied signal for amplitude modulation.
The sensitivity depends on the set modulation [:SOURce<hw>]:AM[:DEPTh].
The returned value reports the sensitivity in %/V. It is assigned to the voltage value for
full modulation of the input.
Return values:
<Sensitivity>
float
Range:
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278
R&S®SMC100A
Remote Control Commands
SOURce Subsystem
Example:
AM:DEPT 50
sets a modulation depth of 50 %.
AM:SENS?
queries the input sensitivity at the external modulation input.
Response: 50
since the voltage value for full modulation is 1V, the resulting
sensitivity is precisely 50 %/V.
Usage:
Query only
Manual operation:
See "AM Sensitivity" on page 172
[:SOURce<hw>]:AM:SOURce <Source>
Selects the modulation signal source for amplitude modulation.
Parameters:
<Source>
INTernal | EXTernal
INTernal
Uses the internally generated signal for modulation. To configure
the frequency, use the commands of the Chapter 7.13.6,
"SOURce:LFOutput Subsystem", on page 299 subsystem.
EXTernal
Uses an externally applied modulation signal.
*RST:
INT
Example:
AM:SOUR INT
selects the internal modulation source.
Manual operation:
See "AM Source" on page 171
[:SOURce<hw>]:AM:STATe <State>
Activates amplitude modulation.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
AM:STAT ON
activates AM modulation.
Manual operation:
See "State" on page 171
7.13.2 SOURce:CORRection Subsystem
The output level is corrected in the CORRection subsystem. Correction is performed
by user-defined table values being added to the output level for the respective RF frequency. In the R&S SMC, this subsystem is used to select, transfer and activate user
correction tables.
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R&S®SMC100A
Remote Control Commands
SOURce Subsystem
Each list is stored as a file. The name of the user correction file can be freely selected.
The file extension *.uco is assigned automatically and cannot be changed.
The files can be stored in a freely selectable directory and opened from there. The
default directory is set using command :MMEMory:CDIRectory on page 260. In the
case of files which are stored in the default directory, only the file name has to be
specified in commands. Otherwise, the complete absolute path has to be specified with
every command. The extension can be omitted in any case.
In the following command examples, the files are stored in the default directory.
The amplitude can also be linearized automatically by means of a R&S NRP power
sensor connected to the generator output signal. With the aid of the command [:
SOURce<hw>]:CORRection:CSET:DATA[:SENSor<ch>][:POWer]:SONCe, a list
with correction values for external test assemblies can be automatically determined,
e.g. for compensating the frequency response of cables. The correction values can be
acquired any time irrespective of the modulation settings of the generator.
[:SOURce]:CORRection:CSET:CATalog?.........................................................................280
[:SOURce<hw>]:CORRection:CSET:DATA:FREQuency.................................................... 281
[:SOURce<hw>]:CORRection:CSET:DATA:FREQuency:POINts?....................................... 281
[:SOURce<hw>]:CORRection:CSET:DATA:POWer........................................................... 281
[:SOURce<hw>]:CORRection:CSET:DATA:POWer:POINts?.............................................. 282
[:SOURce<hw>]:CORRection:CSET:DATA[:SENSor<ch>][:POWer]:SONCe........................282
[:SOURce]:CORRection:CSET:DELete............................................................................ 282
[:SOURce<hw>]:CORRection:DEXChange:AFILe:CATalog?.............................................. 283
[:SOURce<hw>]:CORRection:DEXChange:AFILe:EXTension.............................................283
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SELect.................................................. 284
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SEParator:COLumn................................284
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SEParator:DECimal................................285
[:SOURce<hw>]:CORRection:DEXChange:EXECute.........................................................285
[:SOURce<hw>]:CORRection:DEXChange:MODE............................................................ 286
[:SOURce<hw>]:CORRection:DEXChange:SELect............................................................286
[:SOURce<hw>]:CORRection:CSET[:SELect]................................................................... 287
[:SOURce<hw>]:CORRection[:STATe]............................................................................. 287
[:SOURce<hw>]:CORRection:VALue?............................................................................. 288
[:SOURce<hw>]:CORRection:ZERoing:STATe................................................................. 288
[:SOURce]:CORRection:CSET:CATalog?
Requests a list of user correction tables. The individual lists are separated by commas.
The lists are stored with the fixed file extensions *.uco in a directory of the user's
choice. The directory applicable to the commands is defined with the command
MMEMory:CDIR.
Return values:
<Catalog>
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Example:
MMEM:CDIR '/var/user/ucor'
selects the directory for the user correction files.
CORR:CSET:CAT?
queries which correction tables are available.
Response:UCOR1,UCOR2,UCOR3
the correction tables UCOR1, UCOR2 and UCOR3 are available.
Usage:
Query only
Manual operation:
See "Directory, File List and File Name" on page 112
[:SOURce<hw>]:CORRection:CSET:DATA:FREQuency <Frequency>
Transfers the frequency data to the table selected with :CORRection:CSET:SELect.
The numerical suffix at SOURce must not be used for this command.
Parameters:
<Frequency>
Frequency#1[, Frequency#2, ...]
Range:
300 kHz to RFmax (depending on model)
Example:
CORR:CSET '/var/user/ucor1'
selects the table ucor1.
CORR:CSET:DATA:FREQ 100MHz,102MHz,103MHz,...
enters the frequency value in the table ucor1.
Manual operation:
See " Edit User Cor. Data - User Correction " on page 141
[:SOURce<hw>]:CORRection:CSET:DATA:FREQuency:POINts?
The command queries the number of frequency values in the selected table.
The numerical suffix at SOURce must not be used for this command.
Return values:
<Points>
integer
Range:
*RST:
0 to 10000
0
Example:
CORR:CSET '/var/user/'
selects the table ucor1.
CORR:CSET:DATA:FREQ:POIN?
queries the number of frequency values in the table ucor1.
Response: 440
the table ucor1 contains 440 frequency values.
Usage:
Query only
[:SOURce<hw>]:CORRection:CSET:DATA:POWer <Power>
Transfers the level data to the table selected with [:SOURce<hw>]:CORRection:
CSET[:SELect].
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*RST does not affect data lists. The numerical suffix at SOURce must not be used for
this command.
Parameters:
<Power>
Power#1[, Power#2, ...]
Example:
CORR:CSET '/var/user/ucor1'
selects the table ucor1.
CORR:CSET:DATA:POW 1dB, 0.8dB, 0.75dB,...
enters the level values in the table ucor1.
Manual operation:
See " Edit User Cor. Data - User Correction " on page 141
[:SOURce<hw>]:CORRection:CSET:DATA:POWer:POINts?
Queries the number of level values in the selected table.
The numerical suffix at SOURce must not be used for this command.
Return values:
<Points>
integer
Range:
*RST:
0 to 10000
0
Example:
CORR:CSET '/var/user/ucor1'
selects the table ucor1.
CORR:CSET:DATA:POW:POIN?
queries the number of level values in the table ucor1.
Response: 440
the table ucor1 contains 440 level values.
Usage:
Query only
[:SOURce<hw>]:CORRection:CSET:DATA[:SENSor<ch>][:POWer]:SONCe
The command fills the selected user correction list with the level values measured by
the power sensor for the given frequencies.
To select the used power sensor set the suffix in key word SENSe.
Example:
CORR:CSET:DATA:SENS:POW:SONC
fills the user correction list with level values acquired by the
power sensor connector to the SENSOR connector.
Usage:
Event
Manual operation:
See " Fill User Correction Data with Sensor" on page 146
[:SOURce]:CORRection:CSET:DELete <Filename>
Deletes the specified table.
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The lists are stored with the fixed file extensions *.uco in a directory of the user's
choice. The directory applicable to the commands is defined with the command
MMEMory:CDIR. A path can also be specified in command SOUR:CORR:CSET:CAT?,
in which case the file in the specified directory is deleted.
Setting parameters:
<Filename>
<table name>
Example:
MMEM:CDIR '/var/user/ucor'
selects the directory for the user correction files.
CORR:CSET:DEL 'UCOR1'
deletes the table ucor1.
Usage:
Setting only
Manual operation:
See " User Cor. Data - User Correction " on page 141
[:SOURce<hw>]:CORRection:DEXChange:AFILe:CATalog?
Requests a list of available ASCII files for export/import of user correction data. The
individual files are separated by commas.
The ASCII files are stored with the fixed file extensions *.txt or *.csv in a directory
of the user's choice. The directory applicable to the commands is defined with the command MMEMory:CDIR.
Return values:
<Catalog>
string
Example:
MMEM:CDIR '/var/user/import'
selects the directory for the ASCII files with frequency and level
value pairs.
CORR:DEXC:AFIL:EXT TXT
selects that ASCII files with extension *.txt are listed.
CORR:DEXC:AFIL:CAT?
queries the available files with extension *.txt.
Response: 'ucor1,ucor2'
the ASCII files ucor1.txt and ucor2.txt are available.
Usage:
Query only
[:SOURce<hw>]:CORRection:DEXChange:AFILe:EXTension <Extension>
Selects the file extension of the ASCII file to be imported or exported. Selection TXT
(text file) or CSV (Excel file) is available.
Parameters:
<Extension>
TXT | CSV
*RST:
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Example:
MMEM:CDIR '/var/user/import'
selects the directory for the ASCII files with frequency and level
value pairs.
CORR:DEXC:AFIL:EXT TXT
selects that ASCII files with extension *.txt are listed.
CORR:DEXC:AFIL:CAT?
queries the available files with extension *.txt.
Response: 'list1,list2'
the ASCII files ucor1.txt and ucor2.txt are available.
Manual operation:
See " Extension - User Correction " on page 144
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SELect <Filename>
Selects the ASCII file to be imported or exported.
The ASCII files are stored with the fixed file extensions *.txt or *.csv in a directory
of the user's choice. The directory applicable to the commands is defined with the command MMEMory:CDIR. A path can also be specified in command
SOUR:CORR:DEXC:AFIL:SEL, in which case the files are stored or loaded in the
specified directory.
Parameters:
<Filename>
<ascii file name>
Example:
CORR:DEXC:MODE IMP
selects that ASCII files with frequency and level value pairs are
imported and transferred into user correction lists.
CORR:DEXC:AFIL:SEL '/var/user/import_ucor.csv'
selects that ASCII file ucor.csv is imported.
CORR:DEXC:SEL '/var/user/import_ucor_imp'
selects that the ASCII file ucor.csv is imported into user correction list ucor_imp.
Manual operation:
See " Select ASCII Source / Destination - User Correction "
on page 144
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SEParator:COLumn <Column>
Selects the separator between the frequency and level column of the ASCII table.
Parameters:
<Column>
TABulator | SEMicolon | COMMa | SPACe
*RST:
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Example:
CORR:DEXC:MODE EXP
selects that the user correction list is exported into an ASCII file.
CORR:DEXC:AFIL:SEL '/var/user/import_ucor.csv'
selects ASCII file ucor.csv as destination for the user correction
list data.
CORR:DEXC:AFIL:SEP:COL TAB
the pairs of frequency and level values are separated by a tabulator.
CORR:DEXC:AFIL:SEP:DEC DOT
selects the decimal separator dot.
CORR:DEXC:SEL '/var/user/import_ucor_imp'
selects that the user correction list ucor_imp is imported into
ASCII file ucor.csv.
Manual operation:
See " Column Separator- User Correction " on page 144
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SEParator:DECimal <Decimal>
Selects the decimal separator used in the ASCII data between '.' (decimal point) and ','
(comma) with floating-point numerals.
Parameters:
<Decimal>
DOT | COMMa
*RST:
DOT
Example:
CORR:DEXC:MODE EXP
selects that the user correction list is exported into an ASCII file.
CORR:DEXC:AFIL:SEL '/var/user/import_ucor.csv'
selects ASCII file ucor.csv as destination for the user correction
list data.
CORR:DEXC:AFIL:SEP:COL TAB
the pairs of frequency and level values are separated by a tabulator.
CORR:DEXC:AFIL:SEP:DEC DOT
selects the decimal separator dot.
CORR:DEXC:SEL '/var/user/import_ucor_imp'
selects that the user correction list ucor_imp is imported into
ASCII file ucor.csv.
Manual operation:
See " Decimal Point - User Correction " on page 144
[:SOURce<hw>]:CORRection:DEXChange:EXECute
Starts the export or import of the selected file. When import is selected, the ASCII file is
imported as user correction list. When export is selected, the user correction list is
exported into the selected ASCII file.
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Example:
CORR:DEXC:MODE IMP
selects that ASCII files with frequency and level value pairs are
imported and transferred into user correction lists.
CORR:DEXC:AFIL:SEL '/var/user/import_ucor.csv'
selects that ASCII file ucor.csv is imported.
CORR:DEXC:SEL '/var/user/import_ucor_imp'
selects that the ASCII file ucor.csv is imported into user correction list ucor_imp.
CORR:DEXC:EXEC
starts the import of the ASCII file data into the user correction
file.
Usage:
Event
Manual operation:
See " Import / Export - User Correction " on page 144
[:SOURce<hw>]:CORRection:DEXChange:MODE <Mode>
Selects if user correction lists should be imported or exported. Depending on the selection her, the file select command define either the source or the destination for user
correction lists and ASCII files.
Parameters:
<Mode>
IMPort | EXPort
*RST:
IMPort
Example:
CORR:DEXC:MODE IMP
selects that ASCII files with frequency and level value pairs are
imported and transferred into user correction lists.
CORR:DEXC:AFIL:SEL '/var/user/ucor.csv'
selects that ASCII file ucor.csv is imported.
CORR:DEXC:SEL '/var/user/ucor_imp'
selects that the ASCII file ucor.csv is imported into user correction list ucor_imp.
Manual operation:
See " Mode - User Correction " on page 143
[:SOURce<hw>]:CORRection:DEXChange:SELect <Filename>
Selects the user correction list to be imported or exported.
The user correction files are stored with the fixed file extensions *.uco in a directory
of the user's choice. The directory applicable to the commands is defined with the command MMEMory:CDIR. A path can also be specified in command
SOUR:CORR:DEXC:SEL, in which case the files are stored or loaded in the specified
directory.
Parameters:
<Filename>
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Example:
CORR:DEXC:MODE IMP
selects that ASCII files with frequency and level value pairs are
imported and transferred into user correction lists.
CORR:DEXC:AFIL:SEL '/var/user/import_ucor.csv'
selects that ASCII file ucor.csv is imported.
CORR:DEXC:SEL '/var/user/import_ucor_imp'
selects that the ASCII file ucor.csv is imported into user correction list ucor_imp.
Manual operation:
See " Destination / Source - User Correction " on page 144
[:SOURce<hw>]:CORRection:CSET[:SELect] <Filename>
Selects or creates a file for the user correction data.
If the file does not exist, the instrument automatically creates a new file with the name
you assigned. Note the predefined file extensions under Chapter 4.7.2.1, "Extensions
for User Files", on page 75.
To determine the file location (directory/path) you can either enter it with the command
directly, or use the command MMEMory:CDIR.
To activate level correction use the command [:SOURce<hw>]:CORRection[:
STATe].
Parameters:
<Filename>
<table name>
Example:
CORR:CSET '/var/user/ucor1'
selects the table ucor1.
CORR ON
activates level correction. Correction is performed using the
table ucor1.
Manual operation:
See " User Cor. Data - User Correction " on page 141
[:SOURce<hw>]:CORRection[:STATe] <State>
Activates/deactivates level correction. Level correction is performed using the table
which has been selected with the command [:SOURce<hw>]:CORRection:CSET[:
SELect].
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
SOUR:CORR:CSET '/var/user/ucor1'
selects the table ucor1.
SOUR:CORR ON
activates user correction.
Manual operation:
See " State - User Correction " on page 141
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[:SOURce<hw>]:CORRection:VALue?
Queries the current value for user correction.
Return values:
<Value>
float
Range:
-100 to 100
Increment: 0.01
*RST:
0
Example:
CORR:VAL?
queries the value currently used for level correction.
Response: -3
the correction value is - 3 dB.
Usage:
Query only
Manual operation:
See " User Correction Value - User Correction " on page 141
[:SOURce<hw>]:CORRection:ZERoing:STATe <State>
Activates the zeroing procedure before filling the user correction data acquired by a
sensor.
Parameters:
<State>
0 | 1 | OFF | ON
Manual operation:
See " Fill User Correction Data with Sensor" on page 146
7.13.3 SOURce:FM Subsystem
The FM subsystem contains the commands for checking the frequency modulation.
Characteristics which are valid for all modulations and the LF Output are configured in
the SOURce:LFOutput subsystem (e.g. frequency). The external signal is input at the
MOD EXT connector.
For information about the required options, see Chapter 5.4.3, "Frequency Modulation
(FM)", on page 173.
[:SOURce<hw>]:FM[:DEViation]...................................................................................... 288
[:SOURce<hw>]:FM:EXTernal:COUPling..........................................................................289
[:SOURce<hw>]:FM:EXTernal:DEViation..........................................................................289
[:SOURce<hw>]:FM:INTernal:DEViation...........................................................................289
[:SOURce<hw>]:FM:SENSitivity?.....................................................................................290
[:SOURce<hw>]:FM:SOURce..........................................................................................290
[:SOURce<hw>]:FM:STATe............................................................................................ 291
[:SOURce<hw>]:FM[:DEViation] <Deviation>
Sets the deviation of the frequency modulation signals in Hz. The maximum deviation
depends on the set RF frequency and the selected modulation mode (see data sheet).
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Parameters:
<Deviation>
float
Range:
0 to dynamic
Increment: 0.01
*RST:
1000
Example:
FM 2E3
sets a 2 kHz deviation to the modulation signal.
Manual operation:
See "FM Deviation" on page 174
[:SOURce<hw>]:FM:EXTernal:COUPling <Coupling>
Selects the coupling mode for the external frequency modulation signal.
Parameters:
<Coupling>
AC | DC
AC
Uses only the AC signal component of the modulation signal.
DC
Uses the modulation signal as it is, with AC and DC.
*RST:
AC
Example:
FM:EXT:COUP AC
selects the coupling mode AC for the external frequency modulation signal.
Manual operation:
See "FM External Coupling" on page 174
[:SOURce<hw>]:FM:EXTernal:DEViation <Deviation>
Sets the deviation of the external frequency modulation signal in Hz. The maximum
deviation depends on the set RF frequency and the selected modulation mode (see
data sheet).
Parameters:
<Deviation>
float
Range:
see data sheet
Increment: 0.01
*RST:
1000
Example:
FM:EXT:DEV 3kHz
sets 3 kHz deviation to the frequency modulation signal.
Manual operation:
See "FM Deviation" on page 174
[:SOURce<hw>]:FM:INTernal:DEViation <Deviation>
Sets the deviation of the internal frequency modulation signal in Hz.
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Parameters:
<Deviation>
float
Range:
0 to dynamic
Increment: 0.01
*RST:
1E3
Example:
FM:INT1:DEV 2E3
sets 2 kHz deviation for the freqeuncy modulation signal.
Manual operation:
See "FM Deviation" on page 174
[:SOURce<hw>]:FM:SENSitivity?
Queries the input sensitivity of the externally applied signal for frequency modulation.
The returned value reports the sensitivity in Hz/V. It is assigned to the voltage value for
full modulation of the input signal.
The sensitivity depends on the set [:SOURce<hw>]:FM[:DEViation].
Return values:
<Sensitivity>
float
Range:
0 to max
Increment: 0.01
Example:
FM:DEV 5E3
sets a modulation deviation of 5 kHz.
FM:SENS
queries the input sensitivity at the external modulation input.
Response: 5E3
since the voltage value for full modulation is 1V, the resulting
sensitivity is precisely 5000 Hz/V.
Usage:
Query only
Manual operation:
See "FM Sensitivity" on page 174
[:SOURce<hw>]:FM:SOURce <Source>
Selects the modulation signal source for frequency modulation.
Parameters:
<Source>
INTernal | EXTernal
INT
Uses the internally generated signal for modulation. To configure
the frequency, use the commands of the Chapter 7.13.6,
"SOURce:LFOutput Subsystem", on page 299 subsystem.
EXT
Uses an externally applied modulation signal.
The external signal is input at the MOD EXT connector.
*RST:
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Example:
FM:SOUR INT
selects the internal modulation source.
Manual operation:
See "FM Source" on page 173
[:SOURce<hw>]:FM:STATe <State>
Activates frequency modulation.
Note: Activation of FM deactivates phase modulation (PM).
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
FM:STAT ON
Activates FM modulation.
Manual operation:
See "State" on page 173
7.13.4 SOURce:FREQuency Subsystem
This subsystem contains the commands used to define the frequency settings for the
RF sources and sweeps.
[:SOURce<hw>]:FREQuency:CENTer..............................................................................291
[:SOURce<hw>]:FREQuency[:CW|FIXed].........................................................................292
[:SOURce<hw>]:FREQuency[:CW|FIXed]:RCL................................................................. 293
[:SOURce<hw>]:FREQuency:MANual..............................................................................293
[:SOURce<hw>]:FREQuency:MODE................................................................................294
[:SOURce<hw>]:FREQuency:MULTiplier..........................................................................294
[:SOURce<hw>]:FREQuency:OFFSet.............................................................................. 295
[:SOURce<hw>]:FREQuency:SPAN.................................................................................295
[:SOURce<hw>]:FREQuency:STARt................................................................................296
[:SOURce<hw>]:FREQuency:STOP.................................................................................296
[:SOURce<hw>]:FREQuency:STEP[:INCRement]............................................................. 297
[:SOURce<hw>]:FREQuency:STEP:MODE...................................................................... 297
[:SOURce<hw>]:FREQuency:CENTer <Center>
Sets the center frequency of the RF sweep range.
The range is defined by this center frequency and the specified [:SOURce<hw>]:
FREQuency:SPAN, according to the formula:
fCENTer - (fSPAN/2) ... fCENTer + (fSPAN/2)
with:
fSPAN = fSTOP - fSTARt
The center frequency directly relates to the span, and the start and stop frequencies. If
you change one of these parameters, the center frequency changes accordingly.
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fCENTer = (fSTOP + fSTARt)/2
Note: You can select any frequency within the setting range. The range is defined with
the parameters [:SOURce<hw>]:FREQuency:STARt and [:SOURce<hw>]:
FREQuency:STOP.
A defined offset and the multiplier factor affect the sweep frequency range and therefore all correlated parameters. The set frequencies are only absolute values, if the offset = 0 and the multiplication factor = 1. The multiplier multiplies the frequencies
accordingly, and the offset ≠ 0 shifts the frequencies corresponding to the set value.
300 kHz * fMULTiplier + fOFFSet ... fmax * fMULTiplier + fOFFSet
Parameters:
<Center>
float
Range:
full frequency range
Increment: see the data sheet: RF characteristics > Resolution
of setting
*RST:
depends on model
Example:
FREQ:CENT 400 MHz
sets the center frequency for the frequency sweep to 400 MHz.
FREQ:SPAN 200 MHz
sets a span of 200 MHz. This sets the sweep range to 300 MHz
to 500 MHz.
Manual operation:
See " Center Freq - Frequency Sweep " on page 161
[:SOURce<hw>]:FREQuency[:CW|FIXed] <Fixed>
Sets the frequency of the RF output signal.
In CW mode, see FREQ:MODE CW|FIXed, the instrument operates at a fixed frequency.
In sweep mode FREQ:MODE SWE, the value applies to the sweep frequency and the
instrument processes the frequency settings in defined sweep steps.
You can enter either a numerical frequency value, of decrease or increase the current
frequency step by step with FREQ UP and FREQ DOWN. The frequency is then
increased or decreased by the value [:SOURce<hw>]:FREQuency:STEP[:
INCRement] in FREQ:STEP:MODE USER.
Note:
A defined offset and the multiplier factor affect the sweep range and therefore all correlated parameters. The set frequencies are only absolute values, if the offset = 0 and
the multiplication factor = 1. The multiplier multiplies the frequencies accordingly, and
the offset ≠ 0 shifts the frequencies corresponding to the set value.
The actual frequency at the RF output does not change, but rather the value queried
with [:SOUR]:FREQ?, according to the formula:
fFREQ = fRFout * fMULTiplier + fOFFSet
Correlation: FREQ for FREQ:MODE SWE is linked to the sweep frequency.
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Parameters:
<Fixed>
float
Range:
full frequency range
Increment: see the data sheet: RF characteristics > Resolution
of setting
*RST:
100 MHz
Example:
FREQ 500kHz
sets the frequency of RF output signal A to 500 kHz.
Manual operation:
See "RF Freq" on page 122
[:SOURce<hw>]:FREQuency[:CW|FIXed]:RCL <Rcl>
Determines whether the RF frequency value is retained or taken from a loaded instrument configuration, when you recall instrument settings with the command *RCL.
Parameters:
<Rcl>
INCLude | EXCLude
INCLude
Takes the frequency value of the loaded settings.
EXCLude
Retains the current frequency when an instrument configuration
is loaded.
*RST:
INCLude
Example:
FREQ:RCL INCL
takes the frequency from the loaded instrument configuration.
Manual operation:
See " Exclude Frequency " on page 114
[:SOURce<hw>]:FREQuency:MANual <Manual>
Determines the frequency and triggers a sweep step manually in SWE:MODE MAN.
Note: You can select any frequency within the setting range. The range is defined with
the parameters [:SOURce<hw>]:FREQuency:STARt and [:SOURce<hw>]:
FREQuency:STOP. A defined offset and the multiplier factor affect the sweep range
and therefore all correlated parameters. The set frequencies are only absolute values,
if the offset = 0 and the multiplication factor = 1. The multiplier multiplies the frequencies accordingly, and the offset ≠ 0 shifts the frequencies corresponding to the set
value.
fSTARt * fMULTiplier + fOFFset ... fSTOP * fMULTiplier + fOFFset
Parameters:
<Manual>
float
Range:
full frequency range
Increment: see the data sheet: RF characteristics > Resolution
of setting
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Example:
SWE:MODE MAN
sets the Step sweep mode.
Example:
FREQ:MODE SWE
sets the frequency sweep mode. The sweep start frequency is
output.
FREQ:MAN UP
triggers the next higher sweep step.
FREQ:MAN 500MHz
outputs 500 MHz RF frequency (must e within the sweep frequency range).
FREQ:MAN DOWN
triggers the next lower sweep step relative to 500 MHz.
Manual operation:
See " Current Freq - Frequency Sweep " on page 161
[:SOURce<hw>]:FREQuency:MODE <Mode>
Selects the frequency mode for the generating the RF output signal. The selected
mode determines the parameters to be used for further frequency settings.
Parameters:
<Mode>
CW | FIXed | SWEep
CW|FIXed
Sets the fixed frequency mode.
CW and FIXed are synonyms. The instrument operates at a
defined frequency, set with command [:SOURce<hw>]:
FREQuency[:CW|FIXed]..
SWEep
Sets the sweep mode. The instrument processes the frequency
settings in defined sweep steps. To determine the corresponding
frequency values, use the commands [:SOURce<hw>]:
FREQuency:STARt and [:SOURce<hw>]:FREQuency:STOP,
or [:SOURce<hw>]:FREQuency:CENTer and [:
SOURce<hw>]:FREQuency:SPAN and [:SOURce<hw>]:
FREQuency:MANual.
*RST:
CW
Example:
FREQ:MODE SWE
sets the SWEep mode.
Manual operation:
See " State - Frequency Sweep " on page 157
[:SOURce<hw>]:FREQuency:MULTiplier <Multiplier>
Sets the value for the multiplication factor of a subsequent downstream instrument.
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Parameters:
<Multiplier>
float
Range:
1 to dynamic
Increment: 0.001
*RST:
1
Example:
FREQ:MULT 1
sets the multiplication factor to 1.
Manual operation:
See "Multiplier" on page 124
[:SOURce<hw>]:FREQuency:OFFSet <Offset>
Sets the frequency offset of a downstream instrument, for example a mixer.
If you have specified an OFFSet and / or a MULTiplier factor, the actual frequency
at the RF output does not change, but rather the value queried with [:SOUR]:FREQ?,
according to the following formula:
fFREQ = fRFout * fMULTiplier + fOFFSet
Parameters:
<Offset>
float
Increment: 0.01
*RST:
0
Example:
FREQ:OFFS 500kHz
sets the frequency offset to 500 kHz.
Manual operation:
See "Offset" on page 124
[:SOURce<hw>]:FREQuency:SPAN <Span>
Determines the extent of the frequency sweep range. This setting in combination with
the center frequency setting ([:SOURce<hw>]:FREQuency:CENTer) defines the
sweep range.
This parameter is related to the start and stop frequencies. If you change the frequency, the span changes accordingly.
fSPAN = fSTOP - fSTARt
fSTARt > fSTOP is permitted.
Parameters:
<Span>
float
Range:
full frequency range
Increment: see the data sheet: RF characteristics > Resolution
of setting
*RST:
400E6
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Example:
FREQ:CENT 400 MHz
sets the center frequency of the frequency sweep to 400 MHz.
FREQ:SPAN 200 MHz
sets a span of 200 MHz. This sets the sweep range to 300 MHz
to 500 MHz.
Manual operation:
See "Span - Frequency Sweep" on page 161
[:SOURce<hw>]:FREQuency:STARt <Start>
Sets the start frequency for the RF sweep.
This parameter relates to the center frequency and span. If you change the frequency,
these parameters change accordingly.
fSTARt > fSTOP is permitted.
fSTARt = (fCENTer - fSPAN/2).
Note: A defined offset and the multiplier factor affect the sweep range and therefore all
correlated parameters. The set frequencies are only absolute values, if the offset = 0
and the multiplication factor = 1. The multiplier multiplies the frequencies accordingly,
and the offset ≠ 0 shifts the frequencies corresponding to the set value.
fSTARt * fMULTiplier + fOFFset ... fSTOP * fMULTiplier + fOFFset
Parameters:
<Start>
float
Range:
full frequency range
Increment: see the data sheet: RF characteristics > Resolution
of setting
*RST:
100 MHz
Example:
FREQ:STARt 1 MHz
sets the start frequency for the frequency sweep to 1 MHz.
FREQ:STOP 2 GHz
sets the stop frequency for the frequency sweep to 2 GHz.
Manual operation:
See " Start Freq - Frequency Sweep " on page 160
[:SOURce<hw>]:FREQuency:STOP <Stop>
Sets the stop frequency for the RF sweep.
This parameter is related to the center frequency and span. If you change the frequency, these parameters change accordingly.
fSTARt > fSTOP is permitted.
fSTOP = (fCENTer + fSPAN/2).
Note: A defined offset affects the sweep range and consequently all correlating parameters. The set frequencies are only absolute values, if the Offset = 0. Offset ≠ 0 shifts
the frequencies according to the offset value.
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fSTARt * fMULTiplier + fOFFSet ... fSTOP * fMULTiplier + fOFFSet
Parameters:
<Stop>
float
Range:
full frequency range
Increment: see the data sheet: RF characteristics > Resolution
of setting
*RST:
500 MHz
Example:
FREQ:STOP 2 GHz
sets the stop frequency for the frequency sweep to 2 GHz.
FREQ:STAR 1 MHz
sets the start frequency for the frequency sweep to 1 MHz.
Manual operation:
See " Stop Freq - Frequency Sweep " on page 161
[:SOURce<hw>]:FREQuency:STEP[:INCRement] <Increment>
Sets the step width for FREQ:STEP:MODE USER.
To adjust the frequency step by step with this step size, use the FREQ:UP and
FREQ:DOWN commands.
Note: This value also applies to the step width of the rotary knob of the instrument and
increases or decreases the frequency accordingly, when you work in user-defined step
mode.
Parameters:
<Increment>
float
Range:
full frequency range
Increment: see the data sheet: RF characteristics > Resolution
of setting
*RST:
1E6
Example:
FREQ:STEP 50 kHz
sets the step width for the frequency setting to 50 kHz.
Manual operation:
See "Variation Step" on page 125
[:SOURce<hw>]:FREQuency:STEP:MODE <Mode>
Activates (USER) or deactivates (DECimal) the user-defined step width used when
varying the frequency value with the frequency values UP/DOWN. The command is
linked to the command "Variation Active" for manual control, i.e. the command also
activates/deactivates the user-defined step width used when varying the frequency
value with the rotary knob.
Parameters:
<Mode>
DECimal | USER
*RST:
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Example:
FREQ:STEP 50 kHz
sets the step width for the frequency setting to 50 kHz.
FREQ:STEP:MODE USER
actives this step width for frequency variation with the rotary
knob (manual control) and with frequency values UP/DOWN
(remote control).
Manual operation:
See "Variation Active" on page 124
7.13.5 SOURce:INPut Subsystem
The SOURce:INPut subsystem contains the commands for configuring the inputs for
external modulation signals. The instrument trigger setting influences all sweeps
(Instrument Trigger).
[:SOURce<hw>]:INPut:MODext:IMPedance......................................................................298
[:SOURce]:INPut:TRIGger:SLOPe................................................................................... 298
[:SOURce<hw>]:INPut:MODext:IMPedance <Impedance>
Sets the impedance for an externally applied modulation signal.
Parameters:
<Impedance>
HIGH | G600
HIGH
> 100 k0hm to ground
*RST:
HIGH
Example:
INP:MOD:IMP HIGH
sets > 100 kOhm to ground.
Manual operation:
See "Ext. Impedance" on page 172
[:SOURce]:INPut:TRIGger:SLOPe <Slope>
Sets the polarity of the active slope of an externally applied trigger signal at the trigger
input (BNC connector at the rear of the instrument).
The setting is effective for both inputs at the same time.
Parameters:
<Slope>
NEGative | POSitive
*RST:
POSitive
Example:
INP:TRIG:SLOP NEG
Activates the falling slope of the external trigger signal at the
trigger input.
Manual operation:
See "Ext. Trigger Input Slope" on page 163
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7.13.6 SOURce:LFOutput Subsystem
The SOURce:LFOutput subsystem contains the commands for setting the LF signal
source in CW and Sweep mode and for analog modulation.
Example
The following example shows how to set an LF sweep.
1. Set the sweep range.
LFOutput:FREQuency:STARt 4 kHz
LFOutput:FREQuency:STOP 10 kHz
2. Select linear or logarithmic sweep spacing.
LFOutput:SWEep[:FREQuency]:SPACing LIN
3. Set the step width and dwell time.
LFOutput:SWEep[:FREQuency]:STEP[:LINear] 100 Hz
LFOutput:SWEep[:FREQuency]:DWELl 20 ms
4. Determine the sweep mode.
LFOutput:SWEep:MODE AUTO
5. Determine the trigger.
TRIGger0:SOURce SINGle
6. Activate the sweep.
LFOutput:FREQuency:MODE SWEep
7. Trigger the sweep (depending on the mode).
LFOutput:SWEep:EXECute
[:SOURce]:LFOutput<ch>:FREQuency.............................................................................300
[:SOURce<hw>]:LFOutput:FREQuency:MANual............................................................... 300
[:SOURce<hw>]:LFOutput:FREQuency:MODE................................................................. 301
[:SOURce<hw>]:LFOutput:FREQuency:STARt................................................................. 301
[:SOURce<hw>]:LFOutput:FREQuency:STOP.................................................................. 302
[:SOURce]:LFOutput[:STATe]..........................................................................................302
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:DWELl................................................... 302
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:EXECute................................................ 302
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:MODE....................................................303
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:POINts...................................................304
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:RETRace............................................... 304
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:RUNNing?..............................................305
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:SHAPe...................................................305
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:SPACing................................................ 305
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP[:LINear]........................................ 306
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP:LOGarithmic..................................307
[:SOURce]:LFOutput:VOLTage........................................................................................307
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[:SOURce]:LFOutput<ch>:FREQuency <Frequency>
Sets the frequency of the LF signal in LFO:FREQ:MODE CW|FIXed mode.
Note:
●
If signal source "Internal" is set, the instrument performs the analog modulations
(AM/FM/ɸM/PM) with this freqeuncy.
●
In sweep mode (LFO:FREQ:MODE SWEep), the frequency is coupled with the
sweep frequency.
Parameters:
<Frequency>
float
Range:
full frequency range
Increment: see the data sheet: Modulation sources > Resolution of frequency setting
*RST:
1000
Example:
LFO2:FREQ 5kHz
sets the frequency of the LF generator 2 signal to 5 kHz.
Manual operation:
See "LF Gen Freq" on page 172
[:SOURce<hw>]:LFOutput:FREQuency:MANual <Manual>
Determines the frequency and triggers the next sweep step manually in
LFO:SWE[:FREQ]:MODE MAN, and LFO:SWE:[FREQ]:MODE STEP.
Note: You can select any frequency within the setting range. The range is defined with
LFO:FREQ:STARt and LFO:FREQ:STOP.
Parameters:
<Manual>
float
Range:
full frequency range
Increment: see the data sheet: Modulation sources > Internal
modulation generator > Resolution of frequency
setting
*RST:
1000
Example:
LFO:SWE:MODE MAN
sets the "Step" sweep mode.
LFO:FREQ:MAN 5 kHz
sets an LF frequency of 5 kHz for the next step in the "Step"
sweep mode.
LFO:FREQ:MODE SWE
sets the LF Sweep mode. An LF frequency of 5 kHz is output.
LFO:FREQ:MAN 5.1 kHz
triggers the next sweep step with a frequency of 5.1 kHz.
Manual operation:
See " Current Freq " on page 184
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[:SOURce<hw>]:LFOutput:FREQuency:MODE <Mode>
Sets the instrument operating mode, and determines the commands to be used for frequency settings.
Parameters:
<Mode>
CW | FIXed | SWEep
CW|FIXed
Sets the CW frequency mode. CW and FIXed are synonyms.
The instrument operates at a fixed frequency. To set the LF output frequency, use the command [:SOURce]:
LFOutput<ch>:FREQuency.
SWEep
Sets the sweep mode.
The instrument processes the frequency settings in defined
sweep steps. To determine the corresponding frequency values,
use the commands [:SOURce<hw>]:LFOutput:FREQuency:
STARt, [:SOURce<hw>]:LFOutput:FREQuency:STOP or [:
SOURce<hw>]:LFOutput:FREQuency:MANual.
*RST:
CW
Example:
LFO:FREQ:MODE SWE
sets the sweep mode.
Manual operation:
See " State " on page 181
[:SOURce<hw>]:LFOutput:FREQuency:STARt <Start>
Sets the start frequency for the LF sweep.
Parameters:
<Start>
float
Range:
full frequency range
Increment: see the data sheet: Resolution of frequency setting
*RST:
1 KHz
Example:
RST*
activates all presettings.
LFO:SWE:MODE AUTO
TRIG0:SOUR SING
LFO:FREQ:STAR 1 kHz
LFO:FREQ:STOP 10 kHz
LFO:FREQ:MODE SWE
LFO:SWE:EXEC
the instrument generates a single sweep cycle from 1 kHz to 10
kHz automatically after a manual trigger event occurs
(:LFOutput:SWEep:EXECute or *TRG). The step width is 1
kHz linear, with 15 ms dell time until the signal switches to the
subsequent step.
Manual operation:
See " Start Freq " on page 184
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[:SOURce<hw>]:LFOutput:FREQuency:STOP <Stop>
Sets the stop frequency for the LF sweep.
Parameters:
<Stop>
float
Range:
full frequency range
Increment: see the data sheet: resolution of frequency setting
*RST:
100 KHz
Example:
LFO:FREQ:STOP 10 kHz
sets the stop frequency for the LF sweep to 10 kHz.
Manual operation:
See " Stop Freq " on page 184
[:SOURce]:LFOutput[:STATe] <State>
Activates/deactivates the LF output.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
LFO ON
activates the LF output. The settings under LFO:FREQ and
LFO:SWE become effective.
Manual operation:
See " LF Output State" on page 180
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:DWELl <Dwell>
Sets the dwell time for each frequency step of the sweep.
Tip: It is recommended to switch off the "Display Update" for optimum sweep performance especially with short dwell times (SYSTem:DISPlay:UPDate OFF).
Parameters:
<Dwell>
float
Range:
see data sheet: Dwell time setting range
Increment: 100E-6
*RST:
15E-3
Example:
LFO:SWE:DWEL 20 ms
sets a dwell time of 20 ms.
Manual operation:
See " Dwell Time - LF Sweep " on page 185
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:EXECute
Immediately starts an LF frequency sweep in LFO:SWE:MODE SINGle.
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Example:
LFO:SWE:MODE SING
sets the single cycle mode of the LF sweep.
LFO:SWE:EXEC
starts one cycle of the LF sweep.
Usage:
Event
Manual operation:
See " Execute Single Sweep " on page 183
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:MODE <Mode>
Sets the cycle mode of the LF sweep.
The assignment of the GPIB commands to the sweep modes is given in the description
of the sweep dialogs.
Parameters:
<Mode>
AUTO | MANual | STEP
AUTO
Performs a complete sweep cycle from the start to the end value
when a trigger event occurs.
The dwell time deterrmines the time period for the signal to
switch to the next step.
MANual
Performs a single sweep step when a manual trigger event
occurs.
The trigger system is not active. You can trigger each frequency
step of the sweep individually with the command [:
SOURce<hw>]:LFOutput:FREQuency:MANual. In manual
mode, use the rotary knob for switching to the next step.
With each step, the frequency increases by the value specified
with the command [:SOURce<hw>]:LFOutput:SWEep[:
FREQuency]:STEP[:LINear] or [:SOURce<hw>]:
LFOutput:SWEep[:FREQuency]:STEP:LOGarithmic,
respectively. A frequency value, entered with [:SOURce<hw>]:
LFOutput:FREQuency:MANual takes no effect.
With manual control, the frequency increases or decreases
(depending on the direction of the rotary encoder) by the value
specified under SOUR:LFO:SWE:FREQ:STEP:LIN (linear spacing) or ...:STEP:LOG (logarithmic spacing).
STEP
Each trigger triggers one sweep step only. The frequency
increases by the value entered with [:SOURce<hw>]:
LFOutput:SWEep[:FREQuency]:STEP[:LINear] or [:
SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP:
LOGarithmic.
*RST:
Example:
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LFO:SWE:MODE AUTO
selects Auto mode.
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SOURce Subsystem
Manual operation:
See " Mode " on page 181
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:POINts <Points>
Determines the number of steps for the LF frequency sweep within the sweep range.
This parameter always applies to the currently set sweep spacing and correlates with
the step size as follows:
●
for linear sweeps and fSTARt < fSTOP
freq_points = (fSPAN / step_lin) + 1
with fSPAN = fSTOP - fSTARt
To determine the step size, use the command SWE:STEP[:LIN].
●
logarithmic sweeps and fSTARt < fSTOP
freq_points = ((log fSTOP - log fSTARt) / log step_log) + 1
To determine the logarithmic step size, use the command SWE:STEP:LOG.
If you change the number of sweep points, the step size changes accordingly. The
sweep range remains the same.
Each sweep spacing mode has assigned the POINts setting separately. Thus, the
command refers always to the particular set mode, see [:SOURce<hw>]:LFOutput:
SWEep[:FREQuency]:SPACing.
Parameters:
<Points>
integer
Range:
Example:
2...max
LFO:FREQ:STAR
sets the start frequency to 2 kHz.
LFO:FREQ:STOP
sets the stop frequency to 20 kHz
LFO:SWE:SPAC LIN
sets linear sweep spacing.
LFO:SWE:POIN 11
sets 11 sweep steps for linear sweep spacing. The sweep step
width (STEP) is automatically set to 2 kHz.
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:RETRace <State>
Activates that the signal changes to the start frequency value while it is waiting for the
next trigger event.
You can enable this feature, when you are working with sawtooth shapes in sweep
mode "Single" or "External Single".
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
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Example:
TRIG0:SWE:SOUR SING
LFO:SWE:MODE SWE
LFO:SWE:SHAP SAWT
LFO:SWE:RETR ON
activates retrace function, that menas the frequency changes to
the value at start frequency while waiting for the next trigger
event.
Manual operation:
See " Retrace - LF Frequency Sweep " on page 185
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:RUNNing?
Queries the current status of the LF frequency sweep mode.
Return values:
<State>
0 | 1 | OFF | ON
Example:
LFO:SWE:RUNN?
Response "1": the frequency sweep is running.
Usage:
Query only
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:SHAPe <Shape>
Sets the cycle mode for a sweep sequence (shape).
Parameters:
<Shape>
SAWTooth | TRIangle
SAWTooth
A sweep runs from the start to the stop frequency. A subsequent
sweep starts at the start frequency, that menas the shape of the
sweep sequence resembles a sawtooth.
TRIangle
A sweep runs from the start to the stop frequency and back,
thatnt menas the shape of the sweep resembles a triangle. A
subsequent sweep starts at the start frequency.
*RST:
SAWTooth
Example:
SOUR:LFO:SWE:SHAP TRI
selects the sweep cycle with alternating ascending and
descending sweep directions.
Manual operation:
See "Shape" on page 184
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:SPACing <Spacing>
Selects the mode for the calculation of the frequency sweep intervals.The frequency
increases or decreases by this value at each step.
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Parameters:
<Spacing>
LINear | LOGarithmic
LINear
With the linear sweep, the step width is a fixed frequency value
which is added to the current frequency. The step width for linear sweep is entered in Hz (see [:SOURce<hw>]:LFOutput:
SWEep[:FREQuency]:STEP[:LINear] on page 306).
LOGarithmic
With the logarithmic sweep, the step width is a constant fraction
of the current frequency. This fraction is added to the current frequency. The logarithmic step width is entered in % (see [:
SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP:
LOGarithmic on page 307).
*RST:
LINear
Example:
LFO:SWE:SPAC LIN
selects linear sweep spacing.
Manual operation:
See " Spacing " on page 184
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP[:LINear] <Linear>
Sets the step size for linear LF frequency sweep steps.
This parameter correlates with the number of steps [:SOURce<hw>]:LFOutput:
SWEep[:FREQuency]:POINts within the sweep range as follows:
fSTARt < fSTOP
freq_points = ((fSTARt - fSTOP) / step_lin) + 1
If you change the step size, the number of steps changes accordingly. The sweep
range remains the same.
Parameters:
<Linear>
float
Range:
full frequency range
Increment: see the data sheet: Modulation sources > Resolution of frequency setting
*RST:
1000
Example:
LFO:FREQ:STAR
sets the start frequency to 2 kHz.
LFO:FREQ:STOP
sets the stop frequency to 20 kHz.
LFO:SWE:SPAC LIN
sets linear sweep spacing.
LFO:SWE:STEP 2 kHz
sets the sweep step width to 2 kHz. The number of sweep steps
for linear sweep spacing (POINts) is automatically set to 11.
Manual operation:
See " Step Lin/Log - LF Sweep " on page 185
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SOURce Subsystem
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP:LOGarithmic
<Logarithmic>
Sets the logarithmically determined sweep step size for the LF frequency sweep. It is
expressed in percent and you must enter the value and the unit PCT with the command.
The frequency is increased by a logarithmically calculated fraction of the current frequency according to:
step_logstep+1 = fstep + step_logstep x fstep
fstep+1 = fstep + step_logstep+1
with fSTARt < fSTOP and step = the current number of the sweep steps
This parameter correlates with the number of steps LFO:SWE[:FREQ]:POIN within the
sweep range as follows:
freq_points = ((log fSTOP - log fSTARt) / log step_log) + 1
If you change the step size, the number of steps changes accordingly. The sweep
range remains the same.
Parameters:
<Logarithmic>
float
Range:
0.01 to 100
Increment: 0.01
*RST:
1
Example:
LFO:FREQ:STAR
sets the start frequency to 1 kHz.
LFO:FREQ:STOP
sets the stop frequency to 100 kHz.
LFO:SWE:SPAC LOG
sets logarithmic sweep spacing.
LFO:SWE:STEP:LOG 10PCT
sets the step width for logarithmic sweep spacing to 10% of the
previous frequency in each instance.
Manual operation:
See " Step Lin/Log - LF Sweep " on page 185
[:SOURce]:LFOutput:VOLTage <Voltage>
Sets the voltage of the LF output signal.
Parameters:
<Voltage>
float
Range:
see the data sheet: Internal modulation generator >
Output voltage range
Increment: see the data sheet: resolution of output voltage setting
*RST:
1
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SOURce Subsystem
Example:
LFO:VOLT 2 V
sets the voltage of the LF output to 2 V.
Manual operation:
See " LF Output Voltage " on page 180
7.13.7 SOURce:MODulation Subsystem
This subsystem contains the command for switching on/off all modulations.
[:SOURce<hw>]:MODulation[:ALL][:STATe] <State>
Activates/deactivates the modulations.
The command SOUR:MOD:ALL:STAT OFF switches all modulations off. A subsequent
command SOUR:MOD:ALL:STAT ON restores the status that was active before the
last switch-off. "MOD OFF" is displayed in the info line of the header next to the "Level"
field.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
1
Example:
MOD:STAT OFF
switches off all modulations.
Manual operation:
See "MOD ON/OFF" on page 170
7.13.8 SOURce:PGEN Subsystem
This subsystem contains the commands for setting the pulse generator.
[:SOURce<hw>]:PGENerator:STATe............................................................................... 308
[:SOURce<hw>]:PGENerator:STATe <State>
Activates/deactivates the output of the video/sync signal at the PULSE VIDEO connector at the rear of the instrument.
The signal output and the pulse generator are automatically switched on with activation
of pulse modulation if pulse generator is selected as modulation source. The signal
output can be switched off subsequently.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
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SOURce Subsystem
Example:
PULM:SOUR INT
selects the internal pulse generator as source for pulse modulation
PULM:STAT ON
activates pulse modulation. The pulse generator and the output
of the signals at the PULSE VIDEO connector are automatically
activated in addition.
PGEN:STAT OFF
deactivates the output of the pulse signal by the pulse generator
at the PULSE VIDEO connector. The pulse modulation of the RF
carrier must be activated with command SOURce:PULM:STATe.
Manual operation:
See "Video Sync Signal State - Pulse Generator" on page 187
7.13.9 SOURce:PHASe Subsystem
This subsystem contains the commands for adjusting the phase of the RF output signal
relative to a reference signal of the same frequency.
[:SOURce<hw>]:PHASe................................................................................................. 309
[:SOURce<hw>]:PHASe:REFerence................................................................................ 309
[:SOURce<hw>]:PHASe <Phase>
Sets the phase variation relative to the current phase. The variation is specified in
RADians.
Parameters:
<Phase>
float
Range:
-720 to 720
Increment: 0.1
*RST:
0
Example:
PHAS 0.1 RAD
changes the phase by 0.1 RAD relative to the current phase.
PHAS:REF
adopts the set phase as the current phase.
Manual operation:
See "Delta Phase" on page 125
[:SOURce<hw>]:PHASe:REFerence
Adopts the phase set with SOURce:PHASe:ADJust as the current phase.
Example:
PHAS 0.1RAD
changes the phase by 0.1 RAD relative to the current phase.
PHAS:REF
adopts the set phase as the current phase.
Usage:
Event
Manual operation:
See "Reset Delta Phase Display" on page 125
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SOURce Subsystem
7.13.10 SOURce:PM Subsystem
The PM subsystem contains the commands for checking the phase modulation. The
settings for the internal modulation source (LF generator) are made in the
SOURce:LFOutput subsystem.
For information on the required options, see Chapter 5.4.4, "Phase Modulation (PhiM)",
on page 175.
[:SOURce<hw>]:PM[:DEViation]...................................................................................... 310
[:SOURce<hw>]:PM:EXTernal:COUPling......................................................................... 310
[:SOURce<hw>]:PM:EXTernal:DEViation......................................................................... 311
[:SOURce<hw>]:PM:INTernal:DEViation.......................................................................... 311
[:SOURce<hw>]:PM:SENSitivity?.................................................................................... 311
[:SOURce<hw>]:PM:SOURce......................................................................................... 312
[:SOURce<hw>]:PM:STATe............................................................................................ 312
[:SOURce<hw>]:PM[:DEViation] <Deviation>
Sets the deviation of the phase modulation signals in RAD. The maximum deviation
depends on the set RF frequency and the selected modulation mode (see data sheet).
Parameters:
<Deviation>
float
Range:
see data sheet
Increment: 1E-6
Example:
PM 2
sets 2 RAD deviation to the phase modulation signal.
Manual operation:
See "ɸM Deviation" on page 176
[:SOURce<hw>]:PM:EXTernal:COUPling <Coupling>
Selects the coupling mode for the external phase modulation signal.
Parameters:
<Coupling>
AC | DC
AC
Uses only the AC signal component of the modulation signal.
DC
Uses the modulation signal as it is, with AC and DC.
*RST:
AC
Example:
PM:EXT:COUP AC
selects the coupling mode AC for the external phase modulation
signal.
Manual operation:
See "PhiM Ext Coupling" on page 177
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[:SOURce<hw>]:PM:EXTernal:DEViation <Deviation>
Sets the modulation deviation of the external phase modulation signal in RAD. The
maximum value depends on the set RF frequency and the selected modulation mode
(see data sheet).
Parameters:
<Deviation>
float
Range:
*RST:
0 to 20
1
Example:
PM 5
sets 5 RAD deviation for the external phase modulation signal.
Manual operation:
See "ɸM Deviation" on page 176
[:SOURce<hw>]:PM:INTernal:DEViation <Deviation>
Sets the deviation of the internal phase modulation signal in RAD.
Parameters:
<Deviation>
float
Range:
see data sheet
Increment: 1E-6
*RST:
1
Example:
PM:INT1:DEV 3RAD
sets 3 RAD deviation for the internal phase modulation signal.
Manual operation:
See "ɸM Deviation" on page 176
[:SOURce<hw>]:PM:SENSitivity?
Queries the input sensitivity of the externally applied signal for phase modulation. The
returned value reports the sensitivity in RAD/V. It is assigned to the voltage value for
full modulation of the input.
Return values:
<Sensitivity>
float
Example:
PM:DEV 1
sets a modulation deviation of 1RAD.
PM:SENS?
queries the input sensitivity at the external modulation input.
Response: 1
since the voltage value for full modulation is 1V, the resulting
sensitivity is precisely 1RAD/V.
Usage:
Query only
Manual operation:
See "ɸM Sensitivity" on page 176
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[:SOURce<hw>]:PM:SOURce <Source>
Selects the modulation signal source for phase modulation.
Parameters:
<Source>
INTernal | EXTernal
INTernal
Uses the internally generated signal for modulation. To configure
the LF signal, use the commands of the SOURce:LFOutput Subsystem subsystem.
EXTernal
Uses an externally applied modulation signal.
*RST:
INT
Example:
PM:SOUR INT
selects the internal modulation source.
Manual operation:
See "ɸM Source" on page 176
[:SOURce<hw>]:PM:STATe <State>
Activates phase modulation.
Note: Activation of PM deactivates frequency modulation (FM).
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
PM:STAT ON
activates PM.
Manual operation:
See "State" on page 176
7.13.11 SOURce:POWer Subsystem
This subsystem contains the commands for setting the output level, level control and
level correction of the RF signal.
Other units can also be used instead of dBm:
●
by entering the unit directly after the numerical value (example :POW 0.5V)
●
by changing the DEFault unit in the UNIT system (see the command :UNIT:
POWer).
[:SOURce<hw>]:POWer:ALC:OMODe............................................................................. 313
[:SOURce<hw>]:POWer:ALC:SONCe.............................................................................. 313
[:SOURce<hw>]:POWer:ALC[:STATe]............................................................................. 313
[:SOURce<hw>]:POWer:ATTenuation:RFOFf:MODE.........................................................314
[:SOURce<hw>]:POWer:EMF:STATe...............................................................................314
[:SOURce<hw>]:POWer[:LEVel][:IMMediate][:AMPLitude]..................................................315
[:SOURce<hw>]:POWer[:LEVel][:IMMediate]:OFFSet........................................................ 315
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[:SOURce<hw>]:POWer[:LEVel][:IMMediate]:RCL.............................................................316
[:SOURce<hw>]:POWer:LIMit[:AMPLitude].......................................................................316
[:SOURce<hw>]:POWer:LMODe..................................................................................... 317
[:SOURce<hw>]:POWer:MANual.....................................................................................317
[:SOURce<hw>]:POWer:MODE.......................................................................................318
[:SOURce<hw>]:POWer:POWer......................................................................................318
[:SOURce<hw>]:POWer:SPC:CRANge............................................................................ 319
[:SOURce<hw>]:POWer:SPC:DELay............................................................................... 319
[:SOURce<hw>]:POWer:SPC:PEAK................................................................................ 320
[:SOURce<hw>]:POWer:SPC:SELect.............................................................................. 320
[:SOURce<hw>]:POWer:SPC:STATe...............................................................................320
[:SOURce<hw>]:POWer:SPC:TARGet............................................................................. 320
[:SOURce<hw>]:POWer:STARt.......................................................................................321
[:SOURce<hw>]:POWer:STEP[:INCRement].................................................................... 321
[:SOURce<hw>]:POWer:STEP:MODE............................................................................. 322
[:SOURce<hw>]:POWer:STOP........................................................................................322
[:SOURce<hw>]:POWer:ALC:OMODe <OffMode>
The command sets the level control mode which becomes active when automatic level
control is deactivated (ALC Off).
Parameters:
<OffMode>
SHOLd
SHOLd
Level control is activated briefly if the level or frequency changes
("ALC Off Sample & Hold").
*RST:
Example:
SHOLd
POW:ALC OFF
deactivates automatic level control for RF output A.
POW:ALC:OMOD SHOL
level control is briefly activated if the frequency or level changes.
[:SOURce<hw>]:POWer:ALC:SONCe
Temporarily activates level control for correction purposes.
Example:
POW:ALC OFF
deactivates automatic level control for RF output A.
POW:ALC:SONC
level control is performed once only.
Usage:
Event
Manual operation:
See "Search Once - ALC" on page 135
[:SOURce<hw>]:POWer:ALC[:STATe] <State>
Activates/deactivates automatic level control.
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Parameters:
<State>
ON | OFF | AUTO
ON
Internal level control is permanently activated.
OFF
Internal level control is deactivated; Sample & Hold mode is activated.
AUTO
Internal level control is activated/deactivated automatically
depending on the operating state.
*RST:
AUTO
Example:
POW:ALC ON
activates automatic level control for RF output A.
Manual operation:
See " State - ALC " on page 135
[:SOURce<hw>]:POWer:ATTenuation:RFOFf:MODE <Mode>
Selects the attenuator mode, when the RF signal is switched off.
The setting of the RF OFF mode is not affected by an instrument preset (PRESET
key), *RST and the "Save/Recall" function. This parameter is influenced only by the
Factory Preset.
Parameters:
<Mode>
UNCHanged | FATTenuation
UNCHanged
Freezes the setting of the attenuator when RF is switched off.
The attenuator is only activated when RF is switched on.
This setting recommended if a constant VSWR (Voltage Standing Wave Ratio) is required.
FATTenuation
Sets attenuation to maximum when the RF signal is switched off.
This setting is recommended for applications that require a high
level of noise suppression.
*RST:
depends on instrument hardware
Example:
SOUR:POW:ATT:RFOF:MODE FATT
sets the RF OFF attenuator to maximum.
Manual operation:
See " RF OFF Mode " on page 132
[:SOURce<hw>]:POWer:EMF:STATe <State>
Displays the signal level as voltage of the EMF. The displayed value represents the
voltage over a 50 Ohm load.
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Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
POW:EMF:STAT 1
activates voltage level display.
Manual operation:
See " Display Level as Voltage of EMF - RF Level " on page 133
[:SOURce<hw>]:POWer[:LEVel][:IMMediate][:AMPLitude] <Amplitude>
Sets the RF level applied to the DUT.
Notes:
If specified, a level offset [:SOURce<hw>]:POWer[:LEVel][:IMMediate]:
OFFSet is included according to the formula:
Minimum level + OFFSet ... Maximum level + OFFSet
In addition to numerical values, you can increase or decrease the values step by step
with the UP and DOWN according to the step width defined with [:SOURce<hw>]:
POWer:STEP[:INCRement].
The RF output is activated with :OUTPut<hw>[:STATe] on page 267 (RF ON / RF
OFF).
Parameters:
<Amplitude>
Minimum level ... Maximum level
Determines the RF output level.
Range:
*RST:
Minimum level to Maximum level
-30
Example:
The keywords of this command are largely optional. Therefore,
both the long and short form of the command are shown.
SOUR:POW:LEV:IMM:AMPL 15
or
:POW 15
sets the RF level at output A to 15 dBm.
Manual operation:
See " RF Level " on page 129
[:SOURce<hw>]:POWer[:LEVel][:IMMediate]:OFFSet <Offset>
Note: The level offset is also effective for level sweeps!
Specifies the constant level offset of a downstream attenuator/amplifier. If a level offset
is entered, the level entered with :POWer no longer corresponds to the RF output
level.
The following correlation applies:
POWer = RF output level + POWer:OFFSet.
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Entering a level offset does not change the RF output level, but rather the query value
of :POWer.
For more information, see "RF level vs. RF output level" on page 129.
Only dB is permitted as the unit here. The linear units (V, W, etc.) are not permitted.
The keywords of this command are largely optional. Therefore, both the long and short
form of the command are shown in the example.
Parameters:
<Offset>
float
Range:
-100 to 100
Increment: 0.01
*RST:
0
Example:
SOURce:POWer:LEVel:IMMediate:OFFSet -10
or
POW:OFFS 10
sets the RF level offset to 10 dB
Manual operation:
See " Offset (Level) " on page 131
[:SOURce<hw>]:POWer[:LEVel][:IMMediate]:RCL <Rcl>
Determines whether the RF level is retained or taken from a loaded instrument configuration, when you recall instrument settings with the command *RCL.
Parameters:
<Rcl>
INCLude | EXCLude
INCLude
Takes the level value of the loaded settings.
EXCLude
Retains the current level when an instrument configuration is
loaded.
*RST:
INCLude
Example:
POW:RCL INCL
takes the level value from an instrument configuration loaded
with command *RCL.
Manual operation:
See " Exclude Level " on page 114
[:SOURce<hw>]:POWer:LIMit[:AMPLitude] <Amplitude>
Limits the maximum RF output level in CW and SWEEP mode. It does not influence
the "Level" display or the response to the POW? query command.
The value is not affected by an instrument preset (PRESET key), *RST and the Save/
Recall function. This parameter is influenced only by the factory preset (SYST:FPR)
and its factory value is equal to the upper limit.
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Parameters:
<Amplitude>
float
Minimum level ... Maximum level
The value range for the level setting varies according to the
instrument model.
The values are given in the data sheet.
Increment: 0.01
*RST:
30
Example:
SOURce:POWer:LIMit:AMPLitude 10
or
:POW:LIM 10
limits the RF level to maximum +10 dBm.
Manual operation:
See " Limit - RF Level " on page 131
[:SOURce<hw>]:POWer:LMODe <LevMode>
Sets the RF level mode.
Parameters:
<LevMode>
NORMal | LOWNoise | LOWDistortion
NORMal
The RF signal is output in the standard values of the instrument.
LOWNoise
A very low noise sinewave signal is output.
LOWDistortion
A very pure sinewave signal is output.
*RST:
NORMal
Example:
POW:LMODE LOWD
sets the LOWDistortion mode. The instrument reduces distortions of the RF signal to a minimum.
Manual operation:
See " RF Mode " on page 130
[:SOURce<hw>]:POWer:MANual <Manual>
In Sweep mode (:SOUR:POW:MODE SWE) the command sets the level for the next
sweep step in the Step sweep mode (:SOUR:SWE:POW:MODE MAN). Here only level
values between the settings [:SOUR]:POW:STAR and [:SOUR]:POW:STOP are permitted. Each sweep step is triggered by a separate :SOUR:POW:MAN command.
As with the "Level" value entered in the "RF Level" menu, the OFFSet value is also
taken into consideration with this command.
The specified value range is therefore only effective if :SOURce:POWer:OFFSet is set
to 0. The value range for other OFFset values can be calculated using the following
formula:
Minimum level + OFFSet ... Maximum level + OFFSet
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SOURce Subsystem
Parameters:
<Manual>
float
Minimum level ... Maximum level
The value range for the level setting varies according to the
instrument model
The values are given in the data sheet.
Increment: 0.01
*RST:
-30
Example:
POW:SWE:MODE MAN
sets the Step sweep mode for RF output A.
POW:MAN -5 dBm
sets an RF level of -5 dBm for the next setting in the Step sweep
mode for RF output A.
POW:MODE SWE
sets the Level Sweep mode for RF output A.
POW:MAN -5.5 dBm
triggers the next sweep step with a level of -5.5 dBm.
Manual operation:
See " Current Level - Level Sweep " on page 167
[:SOURce<hw>]:POWer:MODE <Mode>
Sets the instrument operating mode and therefore also the commands used to set the
output level.
Parameters:
<Mode>
CW | FIXed | SWEep
CW|FIXed
Operates at a constant level.
CW and FIXed are synonyms. To set the output level value, use
the command [:SOURce<hw>]:POWer[:LEVel][:
IMMediate][:AMPLitude].
SWEep
Operates in power sweep mode.
Set the range and current level with the commands [:
SOURce<hw>]:POWer:STARt, [:SOURce<hw>]:POWer:
STOP and [:SOURce<hw>]:POWer:MANual.
*RST:
CW
Example:
POW:MODE SWEep
selects the SWEep mode using the
POW:STAR; POW:STOP; POW:MAN settings.
Manual operation:
See " State - Level Sweep " on page 164
[:SOURce<hw>]:POWer:POWer <Power>
Sets the RF level of the RF output connector.
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The level entered with this command corresponds to the level at the RF output, i.e. any
offset entry is not taken into consideration.
Note: The SCPI command [:SOURce<hw>]:POWer[:LEVel][:IMMediate][:
AMPLitude] sets the level of the "Level" display, i.e. the level containing offset.
Parameters:
<Power>
Minimum level ... Maximum level
The value range for the level setting varies according to the
instrument model.
The values are given in the data sheet.
Increment: 0.01
*RST:
-30
Example:
SOUR:POW:POW 15
sets the RF level at output to 15 dBm.
Manual operation:
See "Amplitude" on page 131
[:SOURce<hw>]:POWer:SPC:CRANge <PowCntrlCRange>
Defines the capture range of the power control system.
Within the range:
Target Level +/- Catch Range
the power control locks and tries to achieve the target level. Readings outside the
range are not considered.
Parameters:
<PowCntrlCRange>
float
Range:
Increment:
*RST:
Default unit:
0 to 50
0.01
30
dB
Example:
POW:SPC:CRAN 15
sets the capture range to +/- 15 dB.
Manual operation:
See "Catch Range +/-" on page 139
[:SOURce<hw>]:POWer:SPC:DELay <PowCntrlDelay>
Defines a waiting period between the level adjustment of the generator and the next
measurement of the power sensor.
Parameters:
<PowCntrlDelay>
integer
Range:
*RST:
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SOURce Subsystem
Example:
:POW:SPC:DEL 2 ms
the sensor starts the next reading 2 ms after the level adjustment.
Manual operation:
See "Delay Time" on page 139
[:SOURce<hw>]:POWer:SPC:PEAK <PowCntrlPeak>
Activates power control by means of the peak power values, provided the power sensor supports this function.
Parameters:
<PowCntrlPeak>
0 | 1 | OFF | ON
*RST:
0
Example:
POW:SPC:PEAK ON
uses the measured peak power for power control.
Manual operation:
See "Use Peak Power" on page 139
[:SOURce<hw>]:POWer:SPC:SELect <PowCntrlSelect>
Defines the currently selected sensor to be used for power control.
Parameters:
<PowCntrlSelect>
SENS1 | SENS2 | SENS3 | SENS4
*RST:
SENS1
Example:
POW:SPC:SEL SENS2
selects the sensor connected to a second USB interface for
power control.
Manual operation:
See " Sensor " on page 138
[:SOURce<hw>]:POWer:SPC:STATe <PowCntrlState>
Activates power control using the selected sensor. The control loop periodically adjusts
the generator output. After switching off, the running loop is completed.
Parameters:
<PowCntrlState>
0 | 1 | OFF | ON
*RST:
0
Example:
POW:SPC:STAT ON
activates power control.
Manual operation:
See "State" on page 138
[:SOURce<hw>]:POWer:SPC:TARGet <PowCntrlTarget>
Sets the nominal level expected at the input of the sensor. To define the unit of the
power value, use command :SENSe<ch>:UNIT[:POWer] on page 277.
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Parameters:
<PowCntrlTarget>
float
Range:
-50 to 30
Increment: 0.01
*RST:
-10
Example:
SENS:UNIT dBm
selects unit dBm for setting the target level value.
POW:SPC:TARG -10
sets -10 dBm target level.
Manual operation:
See "Target Level" on page 139
[:SOURce<hw>]:POWer:STARt <Start>
Sets the start level for the RF sweep.
Note: You can select any level within the setting range. The range is defined by this
start value and the [:SOURce<hw>]:POWer:STOP value.
A defined offset ([:SOURce<hw>]:POWer[:LEVel][:IMMediate]:OFFSet)
affects the level values according to the formula:
Minimum level + OFFSet ... Maximum level + OFFSet
Parameters:
<Start>
float
Determines the first level value of the sweep setting range.
Range:
full specified level range
Increment: see the data sheet: Level sweep > Step size setting
resolution
*RST:
-30
Example:
POW:STAR -20 dBm
sets the start level for the level sweep to -15 dBm for RF output
A.
Manual operation:
See " Start Level - Level Sweep " on page 167
[:SOURce<hw>]:POWer:STEP[:INCRement] <Increment>
Sets the step width for POW:STEP:MODE USER.
To adjust the level step by step with this step size, use the POW:UP and POW:UP commands.
Note: This value also applies to the step width of the rotary knob of the instrument and
increases or decreases the level accordingly, when you work in user-defined step
mode.
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SOURce Subsystem
Parameters:
<Increment>
float
Range:
full specified level range
Increment: see the data sheet: Level sweep > Step size setting
resolution
*RST:
1
Example:
POW:STEP 2
sets the step width for entering the RF level to 2 dB.
Manual operation:
See " Variation Step " on page 133
[:SOURce<hw>]:POWer:STEP:MODE <Mode>
Activates (USER) or deactivates (DECimal) the user-defined step width used when
varying the level value with the level values UP/DOWN. The command is linked to setting "Variation Active" for manual control, i.e. the command also activates/deactivates
the user-defined step width used when varying the level value with the rotary knob.
Parameters:
<Mode>
DECimal | USER
*RST:
DECimal
Example:
POW:STEP 2
sets the step width for the level setting to 2 dB.
POW:STEP:MODE USER
actives this step width for level variation with the rotary knob
(manual control) and with level values UP/DOWN (remote control).
Manual operation:
See " Variation Active " on page 132
[:SOURce<hw>]:POWer:STOP <Stop>
Sets the stop level for the RF sweep.
Note: You can select any level within the setting range. The range is defined by the [:
SOURce<hw>]:POWer:STARt value and this stop value.
A defined offset ([:SOURce<hw>]:POWer[:LEVel][:IMMediate]:OFFSet)
affects the level values according to the formula:
Minimum level + OFFSet ... Maximum level + OFFSet
Parameters:
<Stop>
float
Determines the last level value of the sweep setting range.
Range:
full specified level range
Increment: see the data sheet: Level sweep > Step size setting
resolution
*RST:
-10
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SOURce Subsystem
Example:
POW:STOP 3
sets the stop level for the level sweep to 3 dBm for RF output A.
Manual operation:
See " Stop Level - Level Sweep " on page 167
7.13.12 SOURce:PULM Subsystem
This subsystem contains the commands for setting the pulse modulation.
The LF generator is used as the internal modulation source. The pulse frequency of
the internal rectangular signal is therefore set in the SOURce:LFOutput subsystem.
The external signal is input at the PULSE EXT connector. The connector can be used
as trigger input for internal pulse modulation. The polarity and input impedance of the
connector can be selected. The pulse modulation signal is output at the PULSE VIDEO
connector.
Programming Examples
Example: Performing pulse modulation
This example shows a command sequence to perform pulse modulation.
// ******************************************************************
// Reset the instrument to start from an initial state
// ******************************************************************
*RST; *CLS
// ******************************************************************
// Set the RF signal frequency and level
// ******************************************************************
SOURce:FREQuency:CW 4000000000
SOURce:POWer:LEVel:IMMediate:AMPLitude -25
// ******************************************************************
// Configure the pulse modulation settings
// ******************************************************************
// Select the internal modulation generator
SOURce:PULM:SOURce INT
// Set trigger mode
SOURce:PULM:TRIGger:MODE AUTO
// Select pulse mode
SOURce:PULM:MODE DOUB
// ******************************************************************
// Alternatively configure the pulse modulation settings for
// external modulation source
// ******************************************************************
// Select the external modulation source
SOURce:PULM:SOURce EXT
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// Set the polarity of the externally applied modulation signal.
SOURce:PULM:POLarity NORMal
// Select the impedance for the external pulse modulation trigger input
SOURce:PULM:TRIGger:EXTernal:IMPedance G10K
// ******************************************************************
// Configure the pulse generator settings
// ******************************************************************
// Set pulse period
SOURce:PULM:PERiod 10 us
// Set pulse width
SOURce:PULM:WIDth 8 us
// Set double pulse width
SOURce:PULM:DOUBle:WIDTh 0.0000012
// Set double pulse delay
SOURce:PULM:DOUBle:DELay 0.0000045
// ******************************************************************
// Activate the signal output
// ******************************************************************
SOURce:PGENerator:OUTPut:STATe 1
SOURce:PULM:STATe 1
OUTPut1:STATe 1
Example: Generating a pulse train signal
This example shows a command sequence to create a pulse train signal.
Prior to the selection of the pulse train mode make sure that you have generated and
selected a pulse train data list. Otherwise, the instrument generates an error.
// ******************************************************************
// Reset the instrument to start from an initial state
// ******************************************************************
*RST; *CLS
// ******************************************************************
// Set the RF signal frequency and level
// ******************************************************************
SOURce:FREQuency:CW 4000000000
SOURce:POWer:LEVel:IMMediate:AMPLitude -25
// ******************************************************************
// Create a pulse train data list
// ******************************************************************
// Select the directory
MMEM:CDIR '/var/user/Lists/'
// Create and/or select the pulse train data file
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SOURCe:PULM:TRAin:SEL ‘P_FIVE'
// Enter the pulse train data
SOURCe:PULM:TRAin:ONTime 10ns,30ns,40ns,20ns,10ns
SOURCe:PULM:TRAin:OFFTime 30ns,40ns,50ns,40ns,30ns
SOURCe:PULM:TRAin:REPetition 10,1,3,10,6
// ******************************************************************
// Select pulse train mode
// ******************************************************************
// Select the internal modulation generator and the pulse mode
SOURce:PULM:SOURce INTernal
SOURce:PULM:MODE PTRain
// ******************************************************************
// Activate the signal output
// ******************************************************************
SOURce:PGENerator:OUTPut:STATe 1
SOURce:PULM:STATe 1
OUTPut1:STATe 1
[:SOURce<hw>]:PULM:DELay........................................................................................ 325
[:SOURce<hw>]:PULM:DOUBle:DELay............................................................................326
[:SOURce<hw>]:PULM:DOUBle:STATe........................................................................... 326
[:SOURce<hw>]:PULM:DOUBle:WIDTh........................................................................... 326
[:SOURce<hw>]:PULM:MODE........................................................................................ 326
[:SOURce<hw>]:PULM:PERiod....................................................................................... 327
[:SOURce<hw>]:PULM:POLarity..................................................................................... 327
[:SOURce<hw>]:PULM:SOURce..................................................................................... 328
[:SOURce<hw>]:PULM:STATe........................................................................................ 328
[:SOURce<hw>]:PULM:TRIGger:EXTernal:GATE:POLarity................................................ 328
[:SOURce<hw>]:PULM:TRIGger:EXTernal:SLOPe............................................................329
[:SOURce<hw>]:PULM:TRIGger:MODE........................................................................... 329
[:SOURce<hw>]:PULM:WIDTh........................................................................................ 329
[:SOURce<hw>]:PULM:DELay <Delay>
Sets the pulse delay.
Note: Pulse delay is adjustable for external trigger modes.
Parameters:
<Delay>
float
Range:
100 ns to 1 s
Increment: 100 ns
*RST:
100 ns
Example:
PULM:DEL 13 us
13 us elapse after a trigger before the first pulse is generated.
Manual operation:
See " Pulse Delay - Pulse Generator " on page 188
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SOURce Subsystem
[:SOURce<hw>]:PULM:DOUBle:DELay <Delay>
Sets the delay from the start of the first pulse to the start of the second pulse.
Parameters:
<Delay>
float
Range:
1 us to 1 s
Increment: 100 ns
*RST:
700 us
Example:
PULM:DOUB:DEL 22 us
22 us elapse between the beginning of the first pulse and the
beginning of the second pulse in double-pulse mode.
Manual operation:
See " Double Pulse Delay - Pulse Generator " on page 188
[:SOURce<hw>]:PULM:DOUBle:STATe <State>
Enables/disables double pulse generation. The two pulses are generated in one pulse
period.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
Example:
0
PULM:DOUB:STAT ON
double-pulse mode is enabled.
[:SOURce<hw>]:PULM:DOUBle:WIDTh <Width>
Sets the width of the second pulse in case of double pulse generation.
Parameters:
<Width>
float
Range:
1 us to 1 s
Increment: 100 ns
*RST:
200 us
Example:
PULM:DOUB:WIDT 33 us
sets a width of 33 us for the second pulse.
Manual operation:
See " Double Pulse Width - Pulse Generator " on page 188
[:SOURce<hw>]:PULM:MODE <Mode>
Sets the mode of the pulse generator.
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SOURce Subsystem
Parameters:
<Mode>
SINGle | DOUBle
SINGle
Enables single pulse generation.
DOUBle
Enables double pulse generation. The two pulses are generated
in one pulse period.
*RST:
SINGle
Example:
PULM:MODE DOUB
enables double pulse generation.
Manual operation:
See " Pulse Mode - Pulse Generator " on page 187
[:SOURce<hw>]:PULM:PERiod <Period>
Sets the period of the generated pulse. The period determines the repetition frequency
of the internal signal.
Parameters:
<Period>
float
Range:
2 us to 85 s
Increment: 100 ns
*RST:
1 ms
Example:
PULM:PER 220 us
the pulse period is 220 us.
Manual operation:
See " Pulse Period - Pulse Generator " on page 187
[:SOURce<hw>]:PULM:POLarity <Polarity>
Sets the polarity between modulating and modulated signal. This command is effective
only for an external modulation signal.
Parameters:
<Polarity>
NORMal | INVerted
NORMal
The RF signal is suppressed during the pulse pause.
INVerted
The RF signal is suppressed during the pulse.
*RST:
NORMal
Example:
PULM:SOUR EXT
selects the external modulation source.
Example:
PULM:POL INV
selects inverted polarity.
Manual operation:
See " Polarity " on page 179
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SOURce Subsystem
[:SOURce<hw>]:PULM:SOURce <Source>
Selects the source for the pulse modulation signal.
Parameters:
<Source>
INTernal | EXTernal
INTernal
The internally generated rectangular signal is used for the pulse
modulation. The frequency of the internal signal can be set in
the SOURce:LFOutput subsystem.
EXTernal
The signal applied externally via the EXT MOD connector is
used for the pulse modulation.
*RST:
INTernal
Example:
PULM:SOUR INT
selects the internal modulation source.
PULM:STAT ON
activates the pulse modulation.
Usage:
SCPI confirmed
Manual operation:
See "Source" on page 179
[:SOURce<hw>]:PULM:STATe <State>
Activates the pulse modulation.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
PULM:STAT ON
activates pulse modulation.
Manual operation:
See "State" on page 178
[:SOURce<hw>]:PULM:TRIGger:EXTernal:GATE:POLarity <Polarity>
Selects the polarity of the Gate signal.
The signal is supplied via the PULSE EXT connector.
Parameters:
<Polarity>
NORMal | INVerted
*RST:
NORMal
Example:
PULM:TRIG:EXT:GATE:POL NORM
The pulse signal is generated while the gate signal is high.
Manual operation:
See " Gate Input Polarity - Pulse Generator " on page 189
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SOURce Subsystem
[:SOURce<hw>]:PULM:TRIGger:EXTernal:SLOPe <Slope>
Sets the polarity of the active slope of an applied trigger at the PULSE EXT connector.
Parameters:
<Slope>
NEGative | POSitive
*RST:
POSitive
Example:
PULM:TRIG:EXT:SLOP NEG
The pulse generator is triggered on the negative slope of the
external trigger signal.
Manual operation:
See " External Trigger Input Slope - Pulse Generator "
on page 188
[:SOURce<hw>]:PULM:TRIGger:MODE <Mode>
Selects the trigger mode for pulse modulation.
Parameters:
<Mode>
AUTO | EXTernal | EGATe
AUTO
The pulse modulation is generated continuously.
EXTernal
The pulse modulation is triggered by an external trigger event.
The trigger signal is supplied via the PULSE EXT connector.
EGATe
The pulse modulation is gated by an external gate signal. The
signal is supplied via the PULSE EXT connector.
*RST:
AUTO
Example:
PULM:TRIG:MODE EXT
selects triggering by an external trigger event.
Manual operation:
See " Trigger Mode - Pulse Generator " on page 188
[:SOURce<hw>]:PULM:WIDTh <Width>
Sets the width of the generated pulse. The width determines the pulse length. The
pulse width must be at least 20ns less than the set pulse period.
Parameters:
<Width>
float
Range:
1 us to 1 s
Increment: 100 ns
*RST:
500 us
Example:
PULM:WIDT 33 us
sets a width of 33 us for the pulse.
Manual operation:
See " Pulse Width - Pulse Generator " on page 187
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SOURce Subsystem
7.13.13 SOURce:ROSCillator Subsystem
This subsystem contains the commands for setting the external and internal reference
frequency.
The settings of the reference oscillator are not affected by an instrument reset (*RST
on page 236). They are only reset to factory state by the factory-preset (:SYSTem:
FPReset on page 239).
[:SOURce]:ROSCillator:EXTernal:FREQuency..................................................................330
[:SOURce]:ROSCillator:EXTernal:RFOFf[:STATe]............................................................. 330
[:SOURce]:ROSCillator[:INTernal]:ADJust:VALue..............................................................331
[:SOURce]:ROSCillator[:INTernal]:ADJust[:STATe]............................................................331
[:SOURce]:ROSCillator:SOURce..................................................................................... 331
[:SOURce]:ROSCillator:EXTernal:FREQuency <Frequency>
Indicates the frequency value of the externally applied reference signal (10 MHz).
Parameters:
<Frequency>
5MHZ | 10MHZ | 13MHZ | 10MHZ
*RST:
10MHZ
Example:
ROSC:SOUR EXT
Selects the external source. The reference must be input at the
REF IN connector.
ROSC:EXT:FREQ?
Response: 10 MHz external reference frequency.
Manual operation:
See "External Reference Frequency" on page 128
[:SOURce]:ROSCillator:EXTernal:RFOFf[:STATe] <State>
Activates that RF output is automatically switched off, when in external source mode
no reference signal is supplied.
This setting ensures that no improper RF signal due to the missing external reference
signal is output and used for measurements.
In addition to the error message "Ext Ref missing", the instrument generates the message "RF output deactivated'.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
--
Example:
ROSC:SOUR EXT
Selects the external source. The reference must be input at the
REF IN input.
Example:
ROSC:EXT:RFOF:STAT ON
In case of a missing external signal, no RF signal is output.
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SOURce Subsystem
Manual operation:
See "Deactivate RF Output (if external reference is missing)"
on page 128
[:SOURce]:ROSCillator[:INTernal]:ADJust:VALue <Value>
Specifies the frequency correction value (adjustment value).
Parameters:
<Value>
integer
Range:
0 to maximum value (see data sheet)
Increment: see data sheet
*RST:
---
Example:
ROSC:ADJ:VAL 456
Sets the adjustment value to 456.
Manual operation:
See "Adjustment DAC Value" on page 128
[:SOURce]:ROSCillator[:INTernal]:ADJust[:STATe] <State>
Determines whether the calibrated (OFF) or a user-defined (ON) adjustment value is
used for fine adjustment of the frequency.
If user-defined values are used, the instrument is no longer in the calibrated state.
However, the calibration value is not changed and the instrument resumes the calibrated state after sending the command :SOURce:ROSCillator:INTernal:ADJust:
STATe OFF.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
-
Example:
ROSC:SOUR INT
Selects the internal source.
ROSC:ADJ ON
Activates use of a user-defined adjustment value.
ROSC:ADJ:VAL 1400
Sets the adjustment value to 1400.
Manual operation:
See "Adjustment Active" on page 128
[:SOURce]:ROSCillator:SOURce <Source>
Selects the reference frequency source.
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SOURce Subsystem
Parameters:
<Source>
INTernal | EXTernal | ELOop
INTernal
The internal reference oscillator is used.
EXTernal
An external reference signal is used. It must be input at the REF
IN connector at the rear of the instrument.
The instrument is informed of the frequency of the external reference signal by means of the command [:SOURce]:
ROSCillator:EXTernal:FREQuency.
*RST:
---
Example:
ROSC:SOUR EXT
Selects the external source.
ROSC:EXT:FREQ 5 MHz
Informs the instrument that the external reference has a frequency of 5 MHz.
Manual operation:
See "Source" on page 127
7.13.14 SOURce:SWEep Subsystem
The SOURce: subsystem contains the commands for configuring RF sweep signals.
●
The keyword [:FREQuency] can be ommitted, then the commands are SCPIcompliant.
●
To activate a RF sweep mode, use the following commands:
●
–
RF frequency sweep: SOURce:FREQuency:MODE SWEep
(SOURce:FREQuency:MODE CW (off))
–
RF level sweep: SOURce:POWer:MODE SWEep (SOURce:POWer:MODE CW
(off))
All sweeps, including the LF sweep, can be set independently from each other.
This example shows how to set up a frequency sweep.
1. Set the sweep range.
[SOURce:]FREQuency:CENTer 200 MHz
[SOURce:]FREQuency:SPAN 300 MHz
2. Select linear or logarithmic spacing.
[SOURce:]SWEep[:FREQuency]:SPACing LIN
3. Set the step width and dwell time.
[SOURce:]SWEep[:FREQuency]:STEP:LINear 20 MHz
[SOURce:]SWEep[:FREQuency]:DWELl 12 ms
4. Select the trigger mode.
TRIGger:]FSWeep:SOURce SINGle
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SOURce Subsystem
5. Select the sweep mode and activate the sweep.
[SOURce:]SWEep[:FREQuency]:MODE AUTO
[SOURce:]FREQuency:MODE SWEep
6. Trigger the sweep.
[SOURce:]SWEep[:FREQuency]:EXECute
It is recommended that you switch off the "Start/Stop Display Update" for optimum
sweep performance, especially with short dwell times (SYSTem:DISPlay:UPDate
OFF).
[:SOURce<hw>]:SWEep[:FREQuency]:DWELl..................................................................333
[:SOURce<hw>]:SWEep[:FREQuency]:EXECute.............................................................. 334
[:SOURce<hw>]:SWEep[:FREQuency]:MODE.................................................................. 334
[:SOURce<hw>]:SWEep[:FREQuency]:POINts................................................................. 335
[:SOURce<hw>]:SWEep[:FREQuency]:RETRace..............................................................335
[:SOURce<hw>]:SWEep[:FREQuency]:RUNNing?............................................................ 336
[:SOURce<hw>]:SWEep[:FREQuency]:SHAPe................................................................. 336
[:SOURce<hw>]:SWEep[:FREQuency]:SPACing...............................................................336
[:SOURce<hw>]:SWEep[:FREQuency]:STEP[:LINear].......................................................337
[:SOURce<hw>]:SWEep[:FREQuency]:STEP:LOGarithmic................................................ 338
[:SOURce<hw>]:SWEep:POWer:DWELl.......................................................................... 339
[:SOURce<hw>]:SWEep:POWer:EXECute....................................................................... 339
[:SOURce<hw>]:SWEep:POWer:MODE...........................................................................339
[:SOURce<hw>]:SWEep:POWer:POINts.......................................................................... 340
[:SOURce<hw>]:SWEep:POWer:RETRace.......................................................................341
[:SOURce<hw>]:SWEep:POWer:RUNNing?..................................................................... 341
[:SOURce<hw>]:SWEep:POWer:SHAPe.......................................................................... 341
[:SOURce<hw>]:SWEep:POWer:SPACing:MODE?........................................................... 342
[:SOURce<hw>]:SWEep:POWer:STEP[:LOGarithmic]....................................................... 342
[:SOURce<hw>]:SWEep:RESet[:ALL].............................................................................. 343
[:SOURce<hw>]:SWEep[:FREQuency]:DWELl <Dwell>
Sets the time taken for each frequency step of the sweep.
The keyword [:FREQuency] can be omitted (see example). The command is then
SCPI-compliant.
Tip: It is recommended to switch off the "Display Update" for optimum sweep performance especially with short dwell times (SYSTem:DISPlay:UPDate OFF).
Parameters:
<Dwell>
float
Range:
2E-3 to 100
Increment: 100E-6
*RST:
15E-3
Example:
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SWE:DWEL 12 ms
sets a dwell time of 12 ms for a frequency sweep at the RF output.
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R&S®SMC100A
Remote Control Commands
SOURce Subsystem
Manual operation:
See " Dwell Time - Frequency Sweep " on page 163
[:SOURce<hw>]:SWEep[:FREQuency]:EXECute
Starts an RF frequency sweep cycle manually.
The command is only effective in single mode.
Example:
TRIG:FSW:SOUR SING
SOUR:SWE:FREQ:MODE AUT
SWE:FREQ:EXEC
triggers a frequency sweep at the RF output.
Usage:
Event
Manual operation:
See " Execute Single Sweep - Frequency Sweep " on page 160
[:SOURce<hw>]:SWEep[:FREQuency]:MODE <Mode>
Sets the sweep mode.
The keyword [:FREQuency] can be omitted (see example). The command is then
SCPI-compliant.
Parameters:
<Mode>
AUTO | MANual | STEP
AUTO
Each trigger triggers exactly one complete sweep.
MANual
The trigger system is not active. Each frequency step of the
sweep is triggered individually, either by varying the "Current
Frequency" value using the rotary knob under manual control or
by means of a FREQ:MAN command under remote control. With
manual control, the frequency increases or decreases (depending on the direction of the rotary encoder) by the value specified
under FREQ:STEP:INCRement. With remote control, the frequency is set directly with the command :FREQ:MAN.
STEP
Each trigger triggers one sweep step only (Mode Single Step).
The frequency increases by the value entered under
SOUR:SWE:FREQ:STEP:LIN (linear spacing) or ...:STEP:
LOG (logarithmic spacing).
*RST:
AUTO
Example:
SWE:MODE AUTO
selects Mode Auto for a frequency sweep at the RF output.
Manual operation:
See " Mode - RF Frequency Sweep " on page 157
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Remote Control Commands
SOURce Subsystem
[:SOURce<hw>]:SWEep[:FREQuency]:POINts <Points>
Determines the number of steps for the RF frequency sweep within the sweep range.
This parameter always applies to the currently set sweep spacing and correlates with
the step size as follows:
●
for linear sweeps
freq_points = (fSPAN / step_lin) + 1
To determine the step size, use the command SWE:STEP[:LIN].
●
logarithmic sweeps and fSTARt < fSTOP
freqq_points = ((log fSTOP - log fSTARt) / log step_log) + 1
To determine the logarithmic step size, use the command SWE:STEP:LOG.
If you change the number of sweep points, the step size changes accordingly. The
sweep range remains the same.
Parameters:
<Points>
integer
Range:
Example:
2..max
FREQ:STAR
sets the start frequency to 100 MHz.
FREQ:STOP
sets the stop frequency to 500 MHz.
SWE:SPAC LIN
sets linear sweep spacing.
SWE:POIN 401
sets 401 sweep steps for linear sweep spacing. The sweep step
width (STEP) is automatically set to 1 MHz.
[:SOURce<hw>]:SWEep[:FREQuency]:RETRace <State>
Activates that the signal changes to the start frequency value while it is waiting for the
next trigger event.
You can enable this feature, when you are working with sawtooth shapes in sweep
mode "Single" or "External Single".
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
TRIG0:SWE:SOUR SING
FREQ:MODE SWE
SWE:SHAP SAWT
SWE:RETR ON
activates retrace function, i.e. the frequency changes to the
value at start frequency while waiting for the next trigger event.
Manual operation:
See " Retrace - RF Frequency Sweep " on page 162
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SOURce Subsystem
[:SOURce<hw>]:SWEep[:FREQuency]:RUNNing?
Queries the current state of the frequency sweep mode.
Return values:
<State>
0 | 1 | OFF | ON
Example:
SWE:RUNN?
Response "1": signal generation in level sweep active.
Usage:
Query only
[:SOURce<hw>]:SWEep[:FREQuency]:SHAPe <Shape>
Sets the cycle mode for a sweep sequence (shape).
Parameters:
<Shape>
SAWTooth | TRIangle
SAWTooth
One sweep runs from start to stop frequency. Each subsequent
sweep starts at the start frequency, i.e. the shape of the sweep
sequence resembles a sawtooth.
TRIangle
One sweep runs from start to stop frequency and back, i.e. the
shape of the sweep resembles a triangle. Each subsequent
sweep starts at the start frequency.
*RST:
SAWTooth
Example:
SOUR:SWE:SHAP TRI
selects the sweep cycle with alternating ascending and
descending sweep directions.
Manual operation:
See " Shape - RF Frequency Sweep " on page 161
[:SOURce<hw>]:SWEep[:FREQuency]:SPACing <Spacing>
Selects the mode for the calculation of the frequency sweep intervals. The frequency
increases or decreases by this value at each step.
The keyword [:FREQuency] can be omitted. Then the command is SCPI-compliant.
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SOURce Subsystem
Parameters:
<Spacing>
LINear | LOGarithmic
LINear
With the linear sweep, the step width is a fixed frequency value
which is added to the current frequency. The step width for linear sweep is entered in Hz (see [:SOURce<hw>]:SWEep[:
FREQuency]:STEP[:LINear] on page 337).
LOGarithmic
With the logarithmic sweep, the step width is a constant fraction
of the current frequency. This fraction is added to the current frequency. The logarithmic step width is entered in % (see [:
SOURce<hw>]:SWEep[:FREQuency]:STEP:LOGarithmic
on page 338).
*RST:
LINear
Example:
SWE:SPAC LIN
selects linear sweep spacing for a frequency sweep at the RF
output.
Manual operation:
See " Spacing - Frequency Sweep " on page 161
[:SOURce<hw>]:SWEep[:FREQuency]:STEP[:LINear] <Linear>
Sets the step size for linear RF frequency sweep steps.
This parameter is related to the number of steps ([:SOURce<hw>]:SWEep[:
FREQuency]:POINts) within the sweep range as follows:
fSTARt < fSTOP
freq_points = (fSPAN / step_lin) + 1
If you change the step size, the number of steps changes accordingly. The sweep
range remains the same.
The keywords [:FREQuency] and [:LINear] can be omitted. The command is then
SCPI-compliant.
Parameters:
<Linear>
float
Range:
full frequency range
Increment: see the data sheet: RF characteristics > Resolution
of setting
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Remote Control Commands
SOURce Subsystem
Example:
FREQ:STAR 1GHz
sets the start frequency to 1 GHz.
FREQ:STOP 5GHz
sets the stop frequency to 5 GHz.
SWE:SPAC LIN
sets linear sweep spacing.
SWE:STEP 2 MHz
sets the step width for linear sweep spacing to 2 MHz (RF
sweep) at the RF output. The number of sweep steps for linear
sweep spacing (POINts) is automatically set to 2001.
Manual operation:
See " Step Lin/Log - Frequency Sweep " on page 162
[:SOURce<hw>]:SWEep[:FREQuency]:STEP:LOGarithmic <Logarithmic>
Sets a logarithmically determined sweep step size for the RF frequency sweep. It is
expressed in percent and you must enter the value and the unit PCT with the command.
The frequency is increased by a logarithmically calculated fraction of the current frequency according to:
step_logn+1 = fn + step_logn x fn
fn+1 = fn + step_logn+1
with fSTARt < fSTOP and n = number of sweep steps
This parameter correlates with the number of steps SWE:FREQ:POIN within the
sweep range as follows:
freq_points = ((log fSTOP - log fSTARt) / log step_log) + 1
If you change the step size, the number of steps changes accordingly. The sweep
range remains the same.
Parameters:
<Logarithmic>
float
Range:
0.01 to 100
Increment: 1E-3
*RST:
1
Example:
FREQ:STAR 1GHz
sets the start frequency to 1 GHz.
FREQ:STOP 5GHz
sets the stop frequency to 5 GHz.
SWE:SPAC LOG
sets logarithmic sweep spacing.
SWE:STEP:LOG 10PCT
sets the step width for logarithmic sweep spacing to 10% of the
previous frequency in each instance (for a frequency sweep).
Manual operation:
See " Step Lin/Log - Frequency Sweep " on page 162
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R&S®SMC100A
Remote Control Commands
SOURce Subsystem
[:SOURce<hw>]:SWEep:POWer:DWELl <Dwell>
Sets the time taken for each level step of the sweep.
Tip: It is recommended to switch off the "Display Update" for optimum sweep performance especially with short dwell times (SYSTem:DISPlay:UPDate OFF).
Parameters:
<Dwell>
float
Range:
1E-3 to 100
Increment: 100E-6
*RST:
15E-3
Example:
SWE:POW:DWEL 12 ms
sets a dwell time of 12 ms for a level sweep at the RF output.
Manual operation:
See " Dwell Time - Level Sweep " on page 168
[:SOURce<hw>]:SWEep:POWer:EXECute
Triggers a sweep.
The command is only valid for sweep mode Single (SOURce:SWEep:POWer:MODE
SINGle). The command corresponds to the manual-control command "Execute Single
Sweep".
Example:
SOURce:SWEep:POWer:MODE SINGle
sets the single cycle mode of the level sweep.
SWE:POW:EXEC
triggers a level sweep at the RF output.
Usage:
Event
Manual operation:
See " Execute Single Sweep - Level Sweep " on page 166
[:SOURce<hw>]:SWEep:POWer:MODE <Mode>
Sets the cycle mode of the level sweep.
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Remote Control Commands
SOURce Subsystem
Parameters:
<Mode>
AUTO | MANual | STEP
AUTO
Each trigger triggers exactly one complete sweep.
MANual
The trigger system is not active. Each level step of the sweep is
triggered individually, either by varying the "Current Level" value
using the rotary knob under manual control or by means of a
POW:MAN command under remote control.
With manual control, the level increases or decreases (depending on the direction of the rotary encoder) by the value specified
under SOUR:SWE:POW:STEP. With remote control, the level
increases by the value specified under SWEep:POW:STEP which
each sent :POW:MAN command, irrespective the value entered
there.
STEP
Each trigger triggers one sweep step only. The level increases
by the value entered under :SWEep:POWer:STEP.
*RST:
AUTO
Example:
SWE:POW:MODE AUTO
selects Mode Auto for a level sweep at RF output.
Manual operation:
See " Mode - Level Sweep " on page 164
[:SOURce<hw>]:SWEep:POWer:POINts <Points>
Determines the number of steps for the RF level sweep within the sweep range.
This parameter always applies to the currently set sweep spacing and correlates with
the step size as follows:
pow_points = (fSTOP - fSTARt / step_log) + 1
To determine the step size use the command SWE:POW:STEP[:LOG].
If you change the number of sweep points, the step size changes accordingly. The
sweep range remains the same.
Parameters:
<Points>
integer
Range:
Example:
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2...max
POW:STAR - 30 dBm
sets the start frequency to -30 dBm.
POW:STOP - 10 dBm
sets the stop frequency to -10 dBm.
SWE:POW:POIN 20
sets 20 sweep steps. The sweep step width (STEP) is automatically set to 1 dB.
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Remote Control Commands
SOURce Subsystem
[:SOURce<hw>]:SWEep:POWer:RETRace <State>
Activates that the signal changes to the start level value while it is waiting for the next
trigger event.
You can enable this feature, when you are working with sawtooth shapes in sweep
mode "Single" or "External Single".
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
0
Example:
TRIG0:SWE:SOUR SING
POW:MODE SWE
SWE:POW:SHAP SAWT
SWE:POW:RETR ON
activates retrace function, i.e. the level changes to the value at
start level while waiting for the next trigger event.
Manual operation:
See " Retrace - RF Level Sweep " on page 167
[:SOURce<hw>]:SWEep:POWer:RUNNing?
Queries the current state of the level sweep mode.
Return values:
<State>
0 | 1 | OFF | ON
Example:
SWE:POW:RUNN?
Response "1": signal generation in level sweep active.
Usage:
Query only
[:SOURce<hw>]:SWEep:POWer:SHAPe <Shape>
Sets the cycle mode for a sweep sequence (shape).
Parameters:
<Shape>
SAWTooth | TRIangle
SAWTooth
One sweep runs from the start level to the stop level. The subsequent sweep starts at the start level again, i.e. the shape of
sweep sequence resembles a sawtooth.
TRIangle
One sweep runs from start to stop level and back, i.e. the shape
of the sweep resembles a triangle.Each subsequent sweep
starts at the start level again.
*RST:
Example:
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SAWTooth
SOUR:SWE:POW:SHAP TRI
selects the sweep cycle with alternating ascending and
descending sweep directions.
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SOURce Subsystem
Manual operation:
See "Shape - RF Level Sweep" on page 167
[:SOURce<hw>]:SWEep:POWer:SPACing:MODE?
Queries the sweep spacing mode. The sweep spacing for level sweeps is always linear.
Return values:
<Mode>
LINear
*RST:
LINear
Example:
SWE:POW:SPAC:MODE?
queries the sweep spacing for a level sweep at RF output.
Result: LIN
linear spacing
Usage:
Query only
[:SOURce<hw>]:SWEep:POWer:STEP[:LOGarithmic] <Logarithmic>
Sets a logarithmically determined sweep step size for the RF level sweep. It is
expressed in decibels and you must enter the value and the unit dB with the command.
The level is increased by a logarithmically calculated fraction of the current level
according to:
step_sizen+1 = Leveln + step_sizen x Leveln
Leveln+1 = Leveln + step_sizen+1
with LevelSTARt < levelSTOP, step_size = SWE:POW:STEP[:LOG] and n = number of
sweep steps
This parameter correlates with the number of steps SWE:POW:POIN within the sweep
range as follows:
level_points = ((LevelSTOP - LevelSTARt) / step_size) + 1)
If you change the step size, the number of steps changes accordingly. The sweep
range remains the same.
Parameters:
<Logarithmic>
float
Increment: 0.01
*RST:
1
Example:
SWE:POW:STEP 10dB
sets the step width for logarithmic sweep spacing to 10 dB of the
previous level in each instance (for a level sweep).
Manual operation:
See " Step - Level Sweep " on page 168
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STATus Subsystem
[:SOURce<hw>]:SWEep:RESet[:ALL]
Resets all active sweeps to the starting point.
Example:
SWE:RES
resets all active sweeps to the starting point.
Usage:
Event
Manual operation:
See " Reset Sweep - Frequency Sweep " on page 160
7.14 STATus Subsystem
This system contains the commands for the status reporting system. See also Chapter 6.5, "Status Reporting System", on page 223 for detailed information.
*RST on page 236 has no effect on the status registers.
Value ranges
●
Queries return the current value of the respective register, which permits a check of
the device status.
Return values: A decimal value in the range 0 to 32767 (=215-1)
●
The configuration commands set the respective register thus determining which
status changes of the R&S SMC cause the status registers to be changed.
Setting values: A decimal value in the range 0 to 32767 (=215-1)
:STATus:OPERation:CONDition...................................................................................... 343
:STATus:OPERation:ENABle.......................................................................................... 344
:STATus:OPERation[:EVENt].......................................................................................... 344
:STATus:OPERation:NTRansition....................................................................................344
:STATus:OPERation:PTRansition.................................................................................... 344
:STATus:PRESet........................................................................................................... 345
:STATus:QUEStionable:CONDition..................................................................................345
:STATus:QUEStionable:ENABle...................................................................................... 345
:STATus:QUEStionable[:EVENt]......................................................................................345
:STATus:QUEStionable:NTRansition................................................................................346
:STATus:QUEStionable:PTRansition................................................................................346
:STATus:QUEue[:NEXT]?............................................................................................... 346
:STATus:OPERation:CONDition <Condition>
Sets the content of the CONDition part of the STATus:OPERation register. This part
contains information on the action currently being performed in the instrument. The
content is not deleted after being read out because it indicates the current hardware
status.
Parameters:
<Condition>
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R&S®SMC100A
Remote Control Commands
STATus Subsystem
Example:
:STATus:OPERation:CONDition?
queries the Status:Operation:Condition register.
:STATus:OPERation:ENABle <Enable>
Sets the bits of the ENABle part of the STATus:OPERation register. This setting determines which events of the Status-Event part are forwarded to the sum bit in the status
byte. These events can be used for a service request.
Parameters:
<Enable>
Example:
string
:STAT:OPER:ENAB 32767
all events are forwarded to the sum bit of the status byte.
:STATus:OPERation[:EVENt] <Event>
Queries the content of the EVENt part of the STATus:OPERation register. This part
contains information on the actions performed in the instrument since the last readout.
The content of the EVENt part is deleted after being read out.
Parameters:
<Event>
Example:
string
:STAT:OPER:EVEN?
queries the STATus:OPERation:EVENt register.
:STATus:OPERation:NTRansition <Ntransition>
Sets the bits of the NTRansition part of the STATus:OPERation register. If a bit is set,
a transition from 1 to 0 in the condition part causes an entry to be made in the EVENt
part of the register. The disappearance of an event in the hardware is thus registered,
for example the end of an adjustment.
Parameters:
<Ntransition>
Example:
string
:STAT:OPER:NTR 0
a transition from 1 to 0 in the condition part of the Status:Operation register does not cause an entry to be made in the EVENt
part.
:STATus:OPERation:PTRansition <Ptransition>
Sets the bits of the PTRansition part of the STATus:OPERation register. If a bit is set,
a transition from 0 to 1 in the condition part causes an entry to be made in the EVENt
part of the register. A new event in the hardware is thus registered, for example the
start of an adjustment.
Parameters:
<Ptransition>
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Remote Control Commands
STATus Subsystem
Example:
:STAT:OPER:PTR 32767
all transitions from 0 to 1 in the condition part of the Status:Operation register cause an entry to be made in the EVENt part.
:STATus:PRESet <Preset>
Resets the status registers. All PTRansition parts are set to FFFFh (32767), i.e. all
transitions from 0 to 1 are detected. All NTRansition parts are set to 0, i.e. a transition
from 1 to 0 in a CONDition bit is not detected. The ENABle parts of STATus:OPERation and STATus:QUEStionable are set to 0, i.e. all events in these registers are not
passed on.
Parameters:
<Preset>
Example:
string
STAT:PRES
resets the status registers.
:STATus:QUEStionable:CONDition <Condition>
Queries the content of the CONDition part of the STATus:QUEStionable register. This
part contains information on the action currently being performed in the instrument.
The content is not deleted after being read out since it indicates the current hardware
status.
Parameters:
<Condition>
Example:
string
:STATus:QUEStionable:CONDition?
queries the Status:Questionable:Condition register.
:STATus:QUEStionable:ENABle <Enable>
Sets the bits of the ENABle part of the STATus:QUEStionable register. This setting
determines which events of the Status-Event part are enabled for the sum bit in the
status byte. These events can be used for a service request.
Parameters:
<Enable>
Example:
string
STAT:OPER:ENAB 1
problems when performing an adjustment cause an entry to be
made in the sum bit.
:STATus:QUEStionable[:EVENt] <Event>
Queries the content of the EVENt part of the STATus:QUEStionable register. This
part contains information on the actions performed in the instrument since the last
readout. The content of the EVENt part is deleted after being read out.
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Remote Control Commands
STATus Subsystem
Parameters:
<Event>
Example:
string
STAT:QUES:EVEN?
queries the Status:Questionable:Event register.
:STATus:QUEStionable:NTRansition <Ntransition>
Sets the bits of the NTRansition part of the STATus:QUEStionable register. If a bit is
set, a transition from 1 to 0 in the condition part causes an entry to be made in the
EVENt part of the register.
Parameters:
<Ntransition>
Example:
string
STAT:OPER:NTR 0
a transition from 1 to 0 in the condition part of the Status:Questionable register does not cause an entry to be made in the
EVENt part
:STATus:QUEStionable:PTRansition <PTransition>
Sets the bits of the NTRansition part of the STATus:QUEStionable register. If a bit is
set, a transition from 1 to 0 in the condition part causes an entry to be made in the
EVENt part of the register.
Parameters:
<PTransition>
Example:
string
:STAT:OPER:PTR 32767
all transitions from 0 to 1 in the condition part of the Status:Questionable register cause an entry to be made in the
EVENt part
:STATus:QUEue[:NEXT]?
Queries the oldest entry in the error queue and then deletes it. Positive error numbers
denote device-specific errors, and negative error numbers denote error messages
defined by SCPI. If the error queue is empty, 0 ("No error") is returned.
The command is identical to :SYSTem:ERRor[:NEXT]? on page 349.
Return values:
<Next>
string
Example:
:STATus:QUEue?
queries the oldest entry in the error queue.
Response: 0, 'no error'
no errors have occurred since the error queue was last read out
Usage:
Query only
Manual operation:
See "History" on page 60
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Remote Control Commands
SYSTem Subsystem
7.15 SYSTem Subsystem
The SYSTem subsystem contains a series of commands for general functions which do
not directly affect signal generation.
:SYSTem:ERRor:ALL?................................................................................................... 348
:SYSTem:ERRor:CODE:ALL?......................................................................................... 348
:SYSTem:ERRor:CODE[:NEXT]?.................................................................................... 349
:SYSTem:ERRor:COUNt?...............................................................................................349
:SYSTem:ERRor[:NEXT]?...............................................................................................349
:SYSTem:SERRor?........................................................................................................350
:SYSTem:DLOCk...........................................................................................................350
:SYSTem:KLOCk........................................................................................................... 350
:SYSTem:ULOCk...........................................................................................................351
:SYSTem:COMMunicate:GPIB:LTERminator.................................................................... 351
:SYSTem:COMMunicate:GPIB[:SELF]:ADDRess.............................................................. 352
:SYSTem:COMMunicate:NETWork[:COMMon]:DOMain.....................................................352
:SYSTem:COMMunicate:NETWork[:COMMon]:HOSTname............................................... 352
:SYSTem:COMMunicate:NETWork[:COMMon]:WORKgroup.............................................. 352
:SYSTem:COMMunicate:NETWork[:IPADdress]:DNS........................................................ 353
:SYSTem:COMMunicate:NETWork:IPADdress:MODE.......................................................353
:SYSTem:COMMunicate:NETWork:IPADdress................................................................. 353
:SYSTem:COMMunicate:NETWork[:IPADdress]:GATeway.................................................353
:SYSTem:COMMunicate:NETWork[:IPADdress]:SUBNet:MASK......................................... 354
:SYSTem:COMMunicate:NETWork:MACaddress.............................................................. 354
:SYSTem:COMMunicate:NETWork:STATus?................................................................... 354
:SYSTem:COMMunicate:NETWork:RESTart.....................................................................354
:SYSTem:COMMunicate:GPIB:RESource?.......................................................................355
:SYSTem:COMMunicate:NETWork:RESource?................................................................ 355
:SYSTem:COMMunicate:HISLip:RESource?.....................................................................355
:SYSTem:COMMunicate:USB:RESource?........................................................................355
:SYSTem:COMMunicate:SERial:RESource?.....................................................................356
:SYSTem:COMMunicate:SERial:BAUD............................................................................ 356
:SYSTem:COMMunicate:SERial:PARity........................................................................... 356
:SYSTem:COMMunicate:SERial:SBITs............................................................................ 357
:SYSTem:COMMunicate:SOCKet:RESource?...................................................................357
:SYSTem:IDENtification..................................................................................................357
:SYSTem:LANGuage..................................................................................................... 357
:SYSTem:PROTect<ch>[:STATe].................................................................................... 358
:SYSTem:REBoot.......................................................................................................... 358
:SYSTem:RESTart......................................................................................................... 358
:SYSTem:SHUTdown..................................................................................................... 359
:SYSTem:STARtup:COMPlete?.......................................................................................359
:SYSTem:DISPlay:UPDate..............................................................................................359
:SYSTem:DATE.............................................................................................................359
:SYSTem:HCLear.......................................................................................................... 360
:SYSTem:TIME..............................................................................................................360
:SYSTem:TIME:ZONE....................................................................................................360
:SYSTem:TIME:ZONE:CATalog?.....................................................................................360
:SYSTem:VERSion?.......................................................................................................361
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Remote Control Commands
SYSTem Subsystem
:SYSTem:OSYStem?..................................................................................................... 361
:SYSTem:MMEMory:PATH:USER?................................................................................. 361
:SYSTem:WAIT............................................................................................................. 361
:SYSTem:ERRor:ALL?
Queries the error/event queue for all unread items and removes them from the queue.
The response is a comma separated list of error number and a short description of the
error in FIFO order.
Positive error numbers are instrument-dependent. Negative error numbers are
reserved by the SCPI standard.
Return values:
<All>
string
List of: Error/event_number,"Error/event_description>[;Devicedependent info]"
If the queue is empty, the response is 0,"No error"
Example:
SYST:ERR:ALL?
queries all entries in the error queue.
Response: 0, 'no error'
No errors have occurred since the error queue was last read out.
Usage:
Query only
:SYSTem:ERRor:CODE:ALL?
Queries all entries in the error queue and then deletes them. Only the error numbers
are returned and not the entire error text.
Return values:
<All>
string
0
"No error", i.e. the error queue is empty
positive value
Positive error numbers denote device-specific errors
negative value
Negative error numbers denote error messages defined by
SCPI.
Example:
SYST:ERR:CODE:ALL
queries all entries in the error queue.
Response: 0
no errors have occurred since the error queue was last read out.
Usage:
Query only
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R&S®SMC100A
Remote Control Commands
SYSTem Subsystem
:SYSTem:ERRor:CODE[:NEXT]?
Queries the oldest entry in the error queue and then deletes it. Only the error number
is returned and not the entire error text.
Return values:
<Next>
string
0
"No error", i.e. the error queue is empty
positive value
Positive error numbers denote device-specific errors
negative value
Negative error numbers denote error messages defined by
SCPI.
Example:
SYST:ERR:CODE
queries the oldest entry in the error queue.
Response: 0
No errors have occurred since the error queue was last read out.
Usage:
Query only
:SYSTem:ERRor:COUNt?
Queries the number of entries in the error queue. If the error queue is empty, '0' is
returned.
Return values:
<Count>
string
Example:
SYST:ERR:COUN
queries the number of entries in the error queue.
Response: 1
One error has occurred since the error queue was last read out.
Usage:
Query only
:SYSTem:ERRor[:NEXT]?
Queries the error/event queue for the oldest item and removes it from the queue. The
response consists of an error number and a short description of the error.
Positive error numbers are instrument-dependent. Negative error numbers are
reserved by the SCPI standard.
Return values:
<Next>
string
Error/event_number,"Error/event_description>[;Device-dependent info]"
If the queue is empty, the response is 0,"No error"
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R&S®SMC100A
Remote Control Commands
SYSTem Subsystem
Example:
SYST:ERR?
queries the oldest entry in the error queue.
Response: 0, 'no error'
No errors have occurred since the error queue was last read out.
Usage:
Query only
Manual operation:
See "History" on page 60
:SYSTem:SERRor?
This command returns a list of all errors existing at the time when the query is started.
This list corresponds to the display on the info page under manual control.
Return values:
<StaticErrors>
string
Example:
SYSTem:SERRor?
queries all errors existing in the error queue.
Response: -221, 'Settings conflict', 153,
'Input voltage out of range'
the two returned errors have occurred since the error queue was
last queried.
Usage:
Query only
:SYSTem:DLOCk <DispLockStat>
Disables the display, or enables it again (OFF).
The command disables also the front panel keyboard of the instrument including the
LOCAL key.
Parameters:
<DispLockStat>
0 | 1 | OFF | ON
*RST:
0
Example:
SYST:DLOC ON
locks the display. To unlock the display SYST:DLOC OFF.
Manual operation:
See "User Interface" on page 103
:SYSTem:KLOCk <State>
Keyboard LOCk disables the front panel keyboard of the instrument including the
LOCAL key, or enables it again (OFF).
The command disables also the front panel keyboard of the instrument including the
LOCAL key.
Parameters:
<State>
0 | 1 | OFF | ON
*RST:
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Remote Control Commands
SYSTem Subsystem
Example:
SYST:KLOC ON
locks the front panel and external controls. To enable the controls, set SYST:KLOC OFF.
Manual operation:
See "User Interface" on page 103
:SYSTem:ULOCk <Mode>
Locks or unlocks the user interface of the instrument.
Parameters:
<Mode>
ENABled | DONLy | DISabled
ENABled
Unlocks the display and all controls for the manual operation.
DONLy
Locks the controls for the rmanual operation of the instrument.
The display shows the current settings.
DISabled
Locks the controls for the rmanual operation, and enables
remote operation over VNC. The display shows the current settings.
*RST:
ENABled
Example:
SYST:ULOC ON
activates the user interface lock.
Manual operation:
See "User Interface" on page 103
:SYSTem:COMMunicate:GPIB:LTERminator <LTerminator>
Sets the terminator recognition for remote control via GPIB bus.
Parameters:
<LTerminator>
STANdard | EOI
EOI
The terminator must be sent together with the line message EOI
(End of Line). This setting is recommended for binary block
transmissions where a character could coincidentally have the
value LF (Line Feed) but is not intended as the terminator. This
setting must be selected for block data with undefined length.
STANdard
An LF (Line Feed) is recognized as the terminator regardless of
whether it is sent with or without EOI.
*RST:
Example:
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STANdard
SYSTem:COMMunicate:GPIB:LTERminator EOI
only a character which is sent simultaneously with the line message EOI is accepted as the terminator.
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Remote Control Commands
SYSTem Subsystem
:SYSTem:COMMunicate:GPIB[:SELF]:ADDRess <Address>
Sets the GPIB address.
Parameters:
<Address>
integer
Range:
*RST:
1 to 30
28
Example:
SYSTem:COMMunicate:GPIB:SELF:ADDRess 28
sets GPIB address.
Manual operation:
See "GPIB channel address" on page 95
:SYSTem:COMMunicate:NETWork[:COMMon]:DOMain <Domain>
Sets the primary suffix, that is the DNS name without the host name part.
Parameters:
<Domain>
string
Example:
SYSTem:COMMunicate:NETWork:COMMon:DOMain
'ABC.DE'
sets the domain of the network.
Manual operation:
See "DNS Suffix" on page 93
:SYSTem:COMMunicate:NETWork[:COMMon]:HOSTname <Hostname>
Sets the individual host name of the R&S SMC.
Note: it is recommended that you do not change the host name in order to avoid problems with the networdk connection. However, if you change the host name be sure to
use an unique name.
The host name is a protected parameter, To change it, first disable protection level 1
with command :SYSTem:PROTect<ch>[:STATe] on page 358.
Parameters:
<Hostname>
string
Example:
SYSTem:PROTect1:STATe OFF,123456
SYSTem:COMMunicate:NETWork:HOSTname 'SIGGEN'
sets the individual computer name of the R&S SMC.
Manual operation:
See "Hostname" on page 92
:SYSTem:COMMunicate:NETWork[:COMMon]:WORKgroup <Workgroup>
Sets the individual workgroup name of the instrument.
Parameters:
<Workgroup>
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Remote Control Commands
SYSTem Subsystem
Example:
SYSTem:COMMunicate:NETWork:COMMon:WORKgroup
'TEST_09'
sets the workgroup name
Manual operation:
See "Workgroup" on page 92
:SYSTem:COMMunicate:NETWork[:IPADdress]:DNS <DNS>
Determines the net DNS server to resolve the name.
Parameters:
<DNS>
string
Example:
SYST:COMM:NETW:IPAD:DNS 123.456.0.1
Manual operation:
See "DNS Server" on page 93
:SYSTem:COMMunicate:NETWork:IPADdress:MODE <Mode>
Selects manual or automatic setting of the IP address.
Parameters:
<Mode>
AUTO | STATic
*RST:
AUTO
Example:
SYSTem:COMMunicate:NETWork:IPADdress:MODE AUTO
the IP address is assigned automatically (DHCP)
Manual operation:
See "Address Mode" on page 92
:SYSTem:COMMunicate:NETWork:IPADdress <IpAddress>
Sets the IP address.
Parameters:
<IpAddress>
string
Range:
0.0.0.0. to ff.ff.ff.ff
Example:
SYSTem:COMMunicate:NETWork:IPADdress '7.8.9.10'
sets the IP address of the instrument.
Manual operation:
See "IP Address" on page 92
:SYSTem:COMMunicate:NETWork[:IPADdress]:GATeway <Gateway>
Sets the IP address of the default gateway.
Parameters:
<Gateway>
string
Range:
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0.0.0.0 to ff.ff.ff.ff
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Remote Control Commands
SYSTem Subsystem
Example:
SYSTem:COMMunicate:NETWork:IPADdress:GATeway
'1.2.3.4'
sets the IP address of the default gateway.
Manual operation:
See "Default Gateway" on page 93
:SYSTem:COMMunicate:NETWork[:IPADdress]:SUBNet:MASK <Mask>
Sets the subnet mask.
Parameters:
<Mask>
string
Example:
SYSTem:COMMunicate:NETWork:IPADdress:SUBNet:
MASK '255.255.0.0'
determines the subnet mask.
Manual operation:
See "Subnet Mask" on page 93
:SYSTem:COMMunicate:NETWork:MACaddress <MacAddress>
Queries the MAC address of the network adapter.
Parameters:
<MacAddress>
string
Example:
SYST:COMM:NETW:MAC
queries the MAC address.
Manual operation:
See "MAC Address" on page 93
:SYSTem:COMMunicate:NETWork:STATus?
Queries the network configuration state.
Return values:
<State>
0 | 1 | OFF | ON
Usage:
Query only
Manual operation:
See "Network Status" on page 91
:SYSTem:COMMunicate:NETWork:RESTart
Restarts the network connection to the instrument, terminates the connection and sets
it up again.
Example:
SYSTem:COMMunicate:NETWork:RESTart
Usage:
Event
Manual operation:
See "Restart Network" on page 93
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Remote Control Commands
SYSTem Subsystem
:SYSTem:COMMunicate:GPIB:RESource?
Queries the visa resource string for remote control via the GPIB interface.
To change the GPIB address, use the command :SYSTem:COMMunicate:GPIB[:
SELF]:ADDRess.
Return values:
<Resource>
string
Example:
SYSTem:COMMunicate:GPIB:RESource?
queries the VISA resource string.
Response: "GPIB::28::INSTR"'
Usage:
Query only
Manual operation:
See "Visa Resource Strings" on page 96
:SYSTem:COMMunicate:NETWork:RESource?
Queries the VISA resource string, used for remote control of the instrument with
VXI-11 protocol.
Return values:
<Resource>
string
Example:
SYSTem:COMMunicate:NETWork:RESource?
Response: "TCPIP::192.1.2.3::INSTR"
Usage:
Query only
Manual operation:
See "Visa Resource Strings" on page 96
:SYSTem:COMMunicate:HISLip:RESource?
Queries the VISA resource string, used for remote control of the instrument with
HiSLIP protocol.
Return values:
<Resource>
string
Example:
SYSTem:COMMunicate:HISLip:RESource?
Response: "TCPIP::192.1.2.3::hislip0::INSTR"
Usage:
Query only
Manual operation:
See "Visa Resource Strings" on page 96
:SYSTem:COMMunicate:USB:RESource?
Queries the visa resource string for remote control via the USB interface.
Return values:
<Resource>
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Remote Control Commands
SYSTem Subsystem
Example:
SYSTem:COMMunicate:USB:RESource?
queries the VISA resource string for remote control via the USB
interface.
Response: "USB::72::000000::INSTR"
Usage:
Query only
Manual operation:
See "Visa Resource Strings" on page 96
:SYSTem:COMMunicate:SERial:RESource?
Queries the visa resource string for the serial remote control interface. This string is
used for remote control of the instrument.
Return values:
<Resource>
string
Example:
SYSTem:COMMunicate:SERial:RESource?
queries the VISA resource string.
Response: "ASRL1::INSTR"
Usage:
Query only
Manual operation:
See "Visa Resource Strings" on page 96
:SYSTem:COMMunicate:SERial:BAUD <Baud>
Sets the baudrate for the serial remote control interface.
Parameters:
<Baud>
2400 | 4800 | 9600 | 19200 | 38400 | 57600 | 115200
*RST:
115200
Example:
SYSTem:COMMunicate:SERial:BAUD 115200
determines 115200 baudrate.
Manual operation:
See "Baud Rate" on page 96
:SYSTem:COMMunicate:SERial:PARity <Parity>
Sets the parity for the serial remote control interface.
Parameters:
<Parity>
NONE | ODD | EVEN
*RST:
NONE
Example:
SYST:COMM:SER:PAR NONE
selects parity NONE.
Manual operation:
See "Parity" on page 96
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R&S®SMC100A
Remote Control Commands
SYSTem Subsystem
:SYSTem:COMMunicate:SERial:SBITs <SBits>
Sets the number of stop bits for the serial remote control interface.
Parameters:
<SBits>
1|2
*RST:
1
Example:
SYST:COMM:SER:SBIT 2
selects 2 stop bits.
Manual operation:
See "Stop Bits" on page 96
:SYSTem:COMMunicate:SOCKet:RESource?
Queries the visa resource string for remote control via LAN interface, using TCP/IP
socket protocol.
Return values:
<Resource>
string
Example:
SYSTem:COMMunicate:SOCKet:RESource?
Response: "TCPIP::10.113.1.150::5025::SOCKET"
Usage:
Query only
Manual operation:
See "Visa Resource Strings" on page 96
:SYSTem:IDENtification <Identification>
Selects the mode the instrument identification is performed.
Parameters:
<Identification>
AUTO | USER
AUTO
The "IDN String" and the "OPT String" are set automatically.
USER
Enables the selection of user definable "IDN String" and "OPT
String".
*RST:
AUTO
Example:
SYST:IDEN USER
selects the user defined identification string.
Manual operation:
See "Mode" on page 97
:SYSTem:LANGuage <Language>
Sets the remote control command set.
The instrument can also be remote controlled via the command set of several other
generators, for example HP generator. See the Application Note 1GP71 at the download area of the product site on the Internet.
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R&S®SMC100A
Remote Control Commands
SYSTem Subsystem
Note: While working in a emulation mode, the instrument's specific command set is
disabled, i.e. the SCPI command SYSTem:LANGuage will be discarded.
The return to the SCPI command set of the R&S SMC can only be performed by using
the appropriate command of the selected command set. For example, the HP command EX returns to the instrument-specific GPIB command set (selection SYST:LANG
'HPxxxx').
Parameters:
<Language>
string
Example:
SYSTem:LANGuage "SCPI"
sets the SCPI command set.
Manual operation:
See "Language" on page 97
:SYSTem:PROTect<ch>[:STATe] <State>[, <Key>]
Activates/deactivates the specified protection level.
Parameters:
<State>
select
*RST:
1
Setting parameters:
<Key>
integer
The respective functions are disabled when the protection level
is activated. No password is required for activation. A password
must be entered to deactivate the protection level. The password for the first level is 123456.
This protection level can be used to lock-out internal adjustments.
Example:
SYSTem:PROTect1:STATe ON
activates protection level 1. Internal adjustments are only possible after deactivating the lock-out.
SYSTem:PROTect1:STATe OFF,123456
deactivates protection level 1. Internal adjustments are enabled
again.
Manual operation:
See "Protection Level/Password" on page 99
:SYSTem:REBoot
Restarts the firmware and the operating system.
Usage:
Event
:SYSTem:RESTart
Restarts the firmware. The operating system remains active.
Usage:
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Event
358
R&S®SMC100A
Remote Control Commands
SYSTem Subsystem
:SYSTem:SHUTdown
Shuts down the instrument.
Usage:
Event
:SYSTem:STARtup:COMPlete?
Queries if the startup of the instrument is completed.
Return values:
<Complete>
0 | 1 | OFF | ON
*RST:
0
Example:
SYST:STAR:COMP
Response: 1
The startup of the instrument is completed.
Usage:
Query only
:SYSTem:DISPlay:UPDate <Update>
Switches the update of the display on/off. A switchover from remote control to manual
control always sets the status of the update of the display to ON.
Parameters:
<Update>
0 | 1 | OFF | ON
*RST:
ON
Example:
SYST:DISP:UPD OFF
switches update of displayed parameter values off.
Manual operation:
See "Display Update is On/Off" on page 88
:SYSTem:DATE <Year>, <Month>, <Day>
Queries or sets the date for the instrument-internal calendar.
This parameter is protected, in order to prevent accidental changes.
It can be accessed with protection level 1, see :SYSTem:PROTect<ch>[:STATe]
on page 358.
Parameters:
<Year>
<year>,<month>,<day>
<Month>
integer
Range:
<Day>
integer
Range:
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1 to 12
1 to 31
359
R&S®SMC100A
Remote Control Commands
SYSTem Subsystem
Example:
SYST:DATE?
Response: "2011,05,01"
it is the 1st of May, 2011.
:SYSTem:HCLear
Clears the history.
Example:
SYST:HCL
Deletes the history entries.
Usage:
Event
:SYSTem:TIME <Hour>, <Minute>, <Second>
Queries or sets the time for the instrument-internal clock.
The parameter is protected, in order to prevent accidental changes.
It can be accessed with protection level 1, see :SYSTem:PROTect<ch>[:STATe]
on page 358.
Parameters:
<Hour>
0...23,0...59,0...59
Range:
<Minute>
integer
Range:
<Second>
0 to 59
integer
Range:
Example:
0 to 23
0 to 59
SYSTem:TIME?
Response: "12,0,0" it is precisely 12 pm.
:SYSTem:TIME:ZONE <TimeZone>
Sets the time zone. You can query the list of the available time zones with :SYSTem:
TIME:ZONE:CATalog?.
Parameters:
<TimeZone>
string
:SYSTem:TIME:ZONE:CATalog?
Querys the list of available time zones.
Return values:
<Catalog>
Usage:
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Query only
360
R&S®SMC100A
Remote Control Commands
SYSTem Subsystem
:SYSTem:VERSion?
Queries the SCPI version the instrument's command set complies with.
Return values:
<Version>
string
Example:
SYST:VERS
queries the SCPI version.
Response: "1996"
The instrument complies with the SCPI version from 1996.
Usage:
Query only
:SYSTem:OSYStem?
Queries the operating system of the instrument.
Return values:
<OperSystem>
string
Example:
SYSTem:OSYStem?
Response: "Linux"
Usage:
Query only
:SYSTem:MMEMory:PATH:USER?
Queries the user directory, that means the directory the instrument stores user files on.
Return values:
<PathUser>
string
Example:
SYSTem:MMEMory:PATH:USER?
Response: "/var/user/"'
Usage:
Query only
:SYSTem:WAIT <TimeMs>
Delays the execution of the subsequent remote command by the specified time.
This function is useful, for example to execute an SCPI sequence automatically but
with a defined time delay between some commands.
Setting parameters:
<TimeMs>
integer
Wait time in ms
Range:
*RST:
Example:
0 to 10000
0
:SYSTem:WAIT 10000
// waits 10s before resetting the instrument
*RST
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R&S®SMC100A
Remote Control Commands
TEST Subsystem
Usage:
Setting only
7.16 TEST Subsystem
The TEST system contains the commands for performing selftest routines, and for
direct adjustment of the hardware assemblies (:TEST:DIRect).
The self tests return a "0" if the test is performed successfully, otherwise a value other
than "0" is returned. None of the commands of this system have an *RST value.
Improper use can destroy the assembly
The respective hardware assembly responds directly to the :TEST:DIRect command;
any safety mechanisms are bypassed. The command is intended for servicing purposes and should be used only by the Rohde & Schwarz service personnel.
:TEST<hw>:ALL:STARt.................................................................................................. 362
:TEST<hw>:ALL:RESult?................................................................................................362
:TEST<hw>:DIRect........................................................................................................ 363
:TEST<hw>:ALL:STARt
Starts a self-test on all installed hardware options.
To query the result, use the command :TEST<hw>:ALL:RESult? on page 362.
Example:
See :TEST<hw>:ALL:RESult? on page 362
Usage:
Event
Manual operation:
See "Start Selftest" on page 88
:TEST<hw>:ALL:RESult?
Queries the result of the performed self-test (command :TEST<hw>:ALL:STARt
on page 362).
Return values:
<Result>
0 | 1 | RUNning | STOPped
0
Success
1
Fail
*RST:
Example:
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STOPped
TEST:ALL:STAR
Starts the self-test
TEST:ALL:RES?
362
R&S®SMC100A
Remote Control Commands
TRIGger Subsystem
Usage:
Query only
Manual operation:
See "Start Selftest" on page 88
:TEST<hw>:DIRect <HW_assembly>,<subadress>,<hex data string>
:TEST<hw>:DIRect? <HW_assembly>,<subadress>
The respective hardware assembly responds directly to the command; any safety
mechanisms are bypassed. This function is only available via remote control.
Example:
TEST:DIR 'SSYN',0,#H12345678
TEST:DIR? 'SSYN',0
Response: #H12345678
7.17 TRIGger Subsystem
The TRIGger system contains the commands for selecting the trigger source for the
RF and LF sweep. The trigger input connectors are configured in the SOURce:INPut
subsystem.
The trigger system of the R&S SMC is a simplified implementation of the SCPI trigger
system. The TRIGger system differs from the SCPI system as follows:
●
No INITiate command; the instrument behaves as if INITiate:CONTinuous
ON were set.
●
Under TRIGger several sweep subsystems exist.
Other commands associated with the trigger system of the R&S SMC can be found in
the modulation and RF signal subsystems.
TRIGger<hw>
●
Suffix TRIGger<1|2> is not permitted
●
TRIGger0 activates the LF output.
Table 7-2: Cross-reference between the manual and remote control
R&S name
SCPI name
Command under manual control
AUTO
IMMediate
"Auto" mode
SINGle
BUS
"Single" mode.
EXTernal
EXTernal
"Ext Single" and "Ext Step" mode.
Use command LFO:SWEep:MODE
to select between the two sweep
modes.
EAUTo
-
"Ext Start/Stop" mode.
:TRIGger<hw>:FSWeep:SOURce....................................................................................364
:TRIGger<hw>:FSWeep[:IMMediate]................................................................................364
:TRIGger<hw>:LFFSweep.............................................................................................. 365
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R&S®SMC100A
Remote Control Commands
TRIGger Subsystem
:TRIGger<hw>:LFFSweep:SOURce.................................................................................365
:TRIGger<hw>:LFFSweep:IMMediate.............................................................................. 366
:TRIGger<hw>:PSWeep:SOURce....................................................................................366
:TRIGger<hw>:PSWeep[:IMMediate]................................................................................367
:TRIGger<hw>[:SWEep]:SOURce....................................................................................367
:TRIGger<hw>[:SWEep][:IMMediate]................................................................................368
:TRIGger<hw>[:IMMediate]............................................................................................. 369
:TRIGger<hw>:FSWeep:SOURce <Source>
Sets the trigger source for the RF frequency sweep.
The names of the parameters correspond directly to the various settings under manual
control. SCPI uses other names for the parameters; these names are also accepted by
the instrument. The SCPI names should be used if compatibility is an important consideration.
An overview of the various names is given in Table 7-2.
Parameters:
<Source>
AUTO | IMMediate | SINGle | BUS | EXTernal | EAUTo
AUTO|IMMediate
The trigger is free-running, i.e. the trigger condition is fulfilled
continuously. As soon as one sweep is finished, the next sweep
is started.
SINGle|BUS
One complete sweep cycle is triggered by the GPIB commands
[:SOURce<hw>]:SWEep[:FREQuency]:EXECute, :
TRIGger<hw>:FSWeep[:IMMediate] or *TRG. The mode
has to be set to AUTO (:SOURce:SWEep:FREQuency:MODE
AUTO).
EXTernal
The sweep is triggered externally via the INST TRIG connector.
EAUTo
The sweep is triggered externally via the INST TRIG connector.
As soon as one sweep is finished, the next sweep is started. A
second trigger event stops the sweep at the current frequency, a
third trigger event starts the trigger at the start frequency, and so
on.
*RST:
AUTO
Example:
TRIG:FSW:SOUR EXT
selects triggering with an external trigger.
Manual operation:
See " Mode - RF Frequency Sweep " on page 157
:TRIGger<hw>:FSWeep[:IMMediate]
Immediately starts an RF frequency sweep cycle.
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R&S®SMC100A
Remote Control Commands
TRIGger Subsystem
The command is only effective for sweep mode "Single" (SOUR:SWE:FREQ:MODE
AUTO in combination with TRIG:FSW:SOUR SING).
The command corresponds to the manual control "Execute Single Sweep".
Example:
SWE:FREQ:MODE AUTO
sets the triggered sweep mode, i.e. a trigger is required to start
the sweep.
TRIG:FSW:SOUR SING
sets the "Single" trigger mode, i.e. a trigger starts a single
sweep.
TRIG:FSW
starts a single RF frequency sweep.
Usage:
Event
Manual operation:
See " Execute Single Sweep - Frequency Sweep " on page 160
:TRIGger<hw>:LFFSweep
Usage:
Event
Manual operation:
See " Execute Single Sweep " on page 183
Immediately starts an LF frequency sweep.
The command is effective in sweep mode "Single" (LFO:SWE:MODE AUTO in combination with TRIG:LFFS:SOUR SING).
:TRIGger<hw>:LFFSweep:SOURce <Source>
Sets the trigger source for the LF sweep. The trigger is triggered by the command :SOURce:LFOutput:SWEep[:FREQuency]EXECute.
The names of the parameters correspond directly to the various settings under manual
control. SCPI uses other names for the parameters; these names are also accepted by
the instrument. The SCPI names should be used if compatibility is an important consideration.
An overview of the various names is given in the Table 7-2.
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R&S®SMC100A
Remote Control Commands
TRIGger Subsystem
Parameters:
<Source>
AUTO | IMMediate | SINGle | BUS | EXTernal | EAUTo
AUTO|IMMediate
The trigger is free-running, i.e. the trigger condition is fulfilled
continuously. As soon as one sweep is finished, the next sweep
is started.
SINGle|BUS
One complete sweep cycle is triggered by the GPIB commands
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:
EXECute or *TRG.
The mode has to be set to AUTO ([:SOURce<hw>]:
LFOutput:SWEep[:FREQuency]:MODE).
EXTernal
The sweep is triggered externally via the INST TRIG connector.
EAUTo
The sweep is triggered externally via the INST TRIG connector.
As soon as one sweep is finished, the next sweep is started. A
second trigger event stops the sweep at the current frequency, a
third trigger event starts the trigger at the start frequency, and so
on.
*RST:
Example:
AUTO
TRIG:LFFS:SOUR EXT
selects triggering with an external trigger.
:TRIGger<hw>:LFFSweep:IMMediate
Immediately starts an LF frequency sweep.
The command is effective in sweep mode "Single" (LFO:SWE:MODE AUTO in combination with TRIG:LFFS:SOUR SING).
Usage:
Event
Manual operation:
See " Execute Single Sweep " on page 183
:TRIGger<hw>:PSWeep:SOURce <Source>
Sets the trigger source for the RF level sweep.
The names of the parameters correspond directly to the various settings under manual
control. SCPI uses other names for the parameters; these names are also accepted by
the instrument. The SCPI names should be used if compatibility is an important consideration.
An overview of the various names is given in Table 7-2.
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R&S®SMC100A
Remote Control Commands
TRIGger Subsystem
Parameters:
<Source>
AUTO | IMMediate | SINGle | BUS | EXTernal | EAUTo
AUTO|IMMediate
The trigger is free-running, i.e. the trigger condition is fulfilled
continuously. As soon as one sweep is finished, the next sweep
is started.
SINGle|BUS
One complete sweep cycle is triggered by the GPIB commands
[:SOURce<hw>]:SWEep:POWer:EXECute, :TRIGger<hw>:
PSWeep[:IMMediate] or *TRG. The mode has to be set to
AUTO (:SOURce:SWEep:LEVel:MODE AUTO).
EXTernal
The sweep is triggered externally via the INST TRIG connector.
EAUTo
The sweep is triggered externally via the INST TRIG connector.
As soon as one sweep is finished, the next sweep is started. A
second trigger event stops the sweep at the current frequency, a
third trigger event starts the trigger at the start frequency, and so
on.
*RST:
AUTO
Example:
TRIG:PSW:SOUR EXT
selects triggering with an external trigger.
Manual operation:
See " Mode - Level Sweep " on page 164
:TRIGger<hw>:PSWeep[:IMMediate]
Immediately starts an RF level sweep.
The command is only effective for sweep mode "Single" (SOURce:SWEep:POWer:
MODE AUTO in combination with TRIG:PSW:SOUR SING).
The command corresponds to the manual control "Execute Single Sweep".
Example:
SWE:POW:MODE AUTO
selects the triggered sweep mode, i.e. a trigger is required to
start the sweep.
TRIG:PSW:SOUR SING
sets the single trigger mode, i.e. a trigger starts a single sweep.
TRIG:PSW
starts a single RF level sweep.
Usage:
Event
Manual operation:
See " Execute Single Sweep - Level Sweep " on page 166
:TRIGger<hw>[:SWEep]:SOURce <Source>
The command sets the trigger source for all sweeps.
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R&S®SMC100A
Remote Control Commands
TRIGger Subsystem
The names of the parameters correspond directly to the various settings under manual
control. SCPI uses other names for the parameters; these names are also accepted by
the instrument. The SCPI names should be used if compatibility is an important consideration.
An overview of the various names is given in the Table 7-2.
Setting parameters:
<Source>
AUTO | IMMediate | SINGle | BUS | EXTernal | EAUTo
AUTO|IMMediate
The trigger is free-running, i.e. the trigger condition is fulfilled
continuously. As soon as one sweep is finished, the next sweep
is started.
SINGle|BUS
One complete sweep cycle is triggered by the GPIB commands :SOURce:SWEep:POWer|FREQuency:EXEC,
TRIGger:PSWeep|FSWeep:IMMediate or *TRG.
If :SOURce:SWEep:POWer:MODE is set to STEP, one step is
executed.
The mode has to be set to AUTO.
EXTernal
The sweep is triggered externally via the INST TRIG connector.
EAUTo
The sweep is triggered externally via the INST TRIG connector.
As soon as one sweep is finished, the next sweep is started. A
second trigger event stops the sweep at the current frequency, a
third trigger event starts the trigger at the start frequency, and so
on.
*RST:
AUTO
Example:
TRIG0:SOUR EXT
selects triggering with an external trigger. The trigger is input via
the INST TRIG connector.
Usage:
Setting only
Manual operation:
See " Mode " on page 181
:TRIGger<hw>[:SWEep][:IMMediate]
Starts all sweeps which are activated for the respective path. The command starts all
sweeps which are activated.
The sweep to be executed depends on the respective MODE setting
(:SOUR:SWEep:POW|FREQ:MODE and :SOUR:LFO:SWEep[:FREQ]:MODE).
The command corresponds to the manual-control command "Execute Trigger".
Example:
TRIG
starts all active sweeps.
Usage:
Event
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R&S®SMC100A
Remote Control Commands
UNIT Subsystem
Manual operation:
See " Execute Single Sweep - Frequency Sweep " on page 160
:TRIGger<hw>[:IMMediate]
The command immediately starts the activated sweep.
The command performs a single sweep and therefore applies to sweep mode AUTO
with sweep source SINGle. Use the commands
TRIG:FSW|LFFS|PSW|[:SWE]:SOUR SING, and SOUR:SWE:FREQ|POW:MODE, or
SOUR:LFO:SWE:[FREQ:]MODE to set the respective sinlge sweep. You can alternatively use an IMMediate command instead of the respective SWEep:
[FREQ:]|POW:EXECute command.
Example:
TRIG
starts all active sweeps.
Usage:
Event
Manual operation:
See " Execute Single Sweep " on page 183
7.18 UNIT Subsystem
The UNIT subsystem contains the commands specifying which units are valid if no unit
is indicated in a command. These settings are valid for the entire instrument.
:UNIT:ANGLe <Angle>
Defines the default unit for the phase modulation angle. It is not valid for commands
which determine angle values, e.g. RF phase. It does not influence the manual control
parameter unit and the display.
Parameters:
<Angle>
DEGRee | RADian
*RST:
Example:
RADian
UNIT:ANGL DEG
sets DEG as a default unit for all commands which determine
angle values.
:UNIT:POWer <Power>
Defines the default unit for power parameters. This setting affects the GUI, as well as
all remote control commands that determine power values.
Parameters:
<Power>
V | DBUV | DBM
*RST:
Example:
Operating Manual 1411.4060.32 ─ 09
DBM
UNIT:POW V
sets V as a default unit for all commands which determine power
values.
369
R&S®SMC100A
Maintenance
Cleaning
8 Maintenance
The instrument does not need periodic maintenance. Only the cleaning of the instrument is essential.
Follow the instructions in the service manual and the safety instructions when
exchanging modules or ordering spares. The order no. for spare parts is included in
the service manual. The service manual includes further information particularly on
troubleshooting, repair, exchange of modules and alignment.
The address of our support center and a list of all Rohde & Schwarz service centers
can be found at the beginning of this manual.
Risk of damage during shipment
Insufficient protection against mechanical and electrostatic effects during shipment can
damage the instrument.
●
When shipping an instrument, use the original packaging. If you do not have the
original packaging, use sufficient padding to prevent the instrument from moving
around inside the box.
●
Pack the instrument in antistatic wrap to protect it from electrostatic charging.
●
Secure the instrument to prevent any movement and other mechanical effects during transportation.
8.1 Cleaning
Risk of electric shock
If moisture enters the casing, for example if you clean the instrument using a moist
cloth, contact with the instrument can lead to electric shock. Before cleaning the instrument other than with a dry cloth, make sure that the instrument is switched off and disconnected from all power supplies.
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R&S®SMC100A
Maintenance
Storing and Packing
Instrument damage caused by cleaning agents
Cleaning agents contain substances such as solvents (thinners, acetone, etc.), acids,
bases, or other substances. Solvents can damage the front panel labeling, plastic
parts, or screens, for example.
Never use cleaning agents to clean the outside of the instrument. Use a soft, dry, lintfree dust cloth instead.
Risk of instrument damage due to obstructed fans
If the instrument is operated in dusty areas, the fans become obstructed by dust or
other particles over time. Check and clean the fans regularly to ensure that they always
operate properly. If the instrument is run with obstructed fans for a longer period, the
instrument overheats, which can disturb the operation and even cause damage.
1. Clean the outside of the instrument using a soft, dry, lint-free dust cloth.
2. Check and clean the fans regularly to ensure that they always operate properly.
3. Clean the touchscreen as follows:
a) Apply a small amount of standard screen cleaner to a soft cloth.
b) Wipe the screen gently with the moist, but not wet, cloth.
c) If necessary, remove any excess moisture with a dry, soft cloth.
8.2 Storing and Packing
The storage temperature range of the instrument is given in the data sheet. If the
instrument is to be stored for a longer period of time, it must be protected against dust.
Repack the instrument as it was originally packed when transporting or shipping. The
two protective foam plastic parts prevent the control elements and connectors from
being damaged. The antistatic packing foil avoids any undesired electrostatic charging
to occur.
If you do not use the original packaging, use a sturdy cardboard box of suitable size
and provide for sufficient padding to prevent the instrument from slipping inside the
package. Wrap antistatic packing foil around the instrument to protect it from electrostatic charging.
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R&S®SMC100A
Status Information, Error Messages and Troubleshooting
Status Information
9 Status Information, Error Messages and
Troubleshooting
The R&S SMC distinguishes between a variety of different messages such as status
messages, error messages, warnings, or information that are displayed in the "Info"
line on the screen, and also entered in the error/event queue of the status reporting
system.
This section describes the information and status messages concerning the operating
status of the instrument and the types of error messages and warnings. Some error
messages require that the error must be eliminated before correct instrument operation
can be ensured. The info window with a list of current messages and a detailed
description of each message can be opened with the INFO key.
In the remote control mode, error messages are entered in the error/event queue of the
status reporting system and can be queried with the command SYSTem:ERRor?. If the
error queue is empty, 0 ("No error") is returned. The status reporting system is described in detail in Chapter 6.5, "Status Reporting System", on page 223.
Section Chapter 9.5, "Resolving Network Connection Failures", on page 378 provides
recommended solutions for network connection errors, and helps you to collect the
information required for quick and efficient support.
9.1 Status Information
The status messages are displayed in the header section of the screen. The status
information gives the user an overview of the main operating states and settings of the
instrument. The states are indicated for information only and do not necessitate any
action by the user. Status information is displayed between the frequency and level
fields, at the left of the info line or in the info line itself.
9.1.1 Status information displayed between the frequency and level
fields
This section gives an overview of the status messages displayed between the frequency and level fields.
RF OFF
The RF output is switched off
MOD OFF
All modulations are switched off
FREQ OFFSET
A frequency offset is set.
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Status Information
The frequency entered and displayed in the "Frequency" field takes any set frequency
offset into consideration, e.g. an offset set for a downstream instrument. This means
that with a frequency offset the frequency displayed in the header does not correspond
to the frequency at the RF output, but rather to the frequency at the output of the downstream instrument.
This allows the target frequency at the output of a downstream instrument to be
entered in the frequency field. The signal generator changes the RF output frequency
according to the entered offset.
However, the frequency entered and displayed in the "Frequency/Phase" dialog of the
"RF" function block always corresponds to the RF output frequency. Any frequency offset is not taken into consideration.
The correlation is as follows:
Freq in header = RF output frequency (= Freq in dialog) + Freq offset (= Offset in dialog)
OVERLOAD
The power of the external signal applied to the RF output is too high. The overload protection is tripped and the connection between the RF output and attenuator is interrupted. The overload protection is reset by pressing the RF ON/OFF key. The RF input is
activated when the overload protection is reset.
LEVEL OFFSET
A level offset is set.
The level entered and displayed in the "Level" field takes the offset of any downstream
attenuators/amplifiers into consideration by way of calculation. This means that with a
level offset the level displayed in the header does not correspond to the level at the RF
output, but rather to the level at the output of the downstream instrument.
This allows the target level at the output of downstream instruments to be entered. The
signal generator changes the RF output level according to the set offset.
However, the level entered and displayed in the "Level" dialog of the "RF" function
block always corresponds to the RF output level. Any level offset is not taken into consideration.
The correlation is as follows:
Level in header = RF output level (= Level in dialog) + Level offset
EXT REF
An external reference is used.
The external signal with selectable frequency and defined level must be input at the
REF IN connector. It is output at the REF OUT connector.
BUSY
A setting or calculation is executed.
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Status Information
9.1.2 Status information displayed to the left of the Info line
This section gives an overview of the status messages displayed to the left of the Info
line.
REMOTE
Indicates that the instrument is in remote control mode.
The keys on the front panel are usable, but all parameters are in read only mode.
To return to manual control, use the LOCAL key or the command &GTL. The current
command must be fully processed before the mode is switched, otherwise the instrument switches immediately back to remote control.
REM-LLO
Indicates that the instrument is in remote control mode with local lockout enabled.
The LOCAL key is locked. To set the local lockout, use the command &LLO (local lockout).
The keys on the front panel are usable, but all parameters are in read only mode.
To return to manual operation or to "REMOTE" state, use one of the following commands:
● &LOCS
swichtes directly from "REM-LLO" to manual operation.
● &REMS
changes the remote control state from "REM-LLO" to "REMOTE".
● CALL IBLOC (generator%) (Visual Basic command)
switches from remote control state to manual operation.
LOC-LLO
For the direct operation the state has been changed from remote control to manual
operation (local state). The LOCAL key was disabled with the command LLO (local
lockout).
With the next activating of the remote control mode, the instrument cannot be switched
to manual operation by the operator. The status information changes to "REM-LLO".
The instrument can be switched to manual operation by means of remote control only
(e.g. with the Visual Basic command CALL IBLOC (generator%)).
9.1.3 Status information displayed in the Info line
This section gives an overview of the status messages displayed in the Info line.
RFSweep / LevelSweep / LFSweep
The indicated sweep is enabled.
ALC On / Auto / S&H
The status of the automatic level control is indicated:
● ON
automatic level control permanently on
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Error Messages
●
●
Auto
automatic level control is automatically adapted to the operating states
S&H
automatic level control off, recalibration of the level whenever the level or frequency is set (sample and hold mode)
AttFixed
Attenuator fixed mode is active.
The uninterrupted level settings are made in a fixed range without attenuator switching.
The variation range is set automatically when this mode is activated. The range is displayed under "Attenuator Fixed Range" in the "Level" dialog.
UCorr
User Correction is active.
The level is corrected by the given values in the selected user correction list. Correction is performed by the user-defined list values being added to the output level for the
respective RF frequency. With frequencies which are not contained in the list, the level
correction is determined by interpolation of the closest correction values.
OvenCold
The reference oscillator has not yet reached its nominal frequency.
When switching on from the STANDBY mode, the specified frequency accuracy is
reached immediately. If the power switch was switched off, the reference oscillator
needs some warm-up time to reach its nominal frequency. During this period of time,
the output frequency does not yet reach its final value either.
9.2 Error Messages
Messages indicate errors in the instrument. They are displayed in the info line in different colors depending on their importance and display duration. Errors (e.g. no calibration data) are displayed in red, information (e.g. file not found) and warnings in black.
Warnings indicate less significant errors (e.g. the instrument operates outside specified
data).
9.2.1 Volatile messages
Volatile messages report automatic settings in the instrument (e.g. switching off of
incompatible types of modulation) or on illegal entries that are not accepted by the
instrument (e.g. range violations). They are displayed in the info line on a yellow background. They are displayed on top of status information or permanent messages.
Volatile messages do not normally demand user actions and disappear automatically
after a brief period of time. They are stored in the history, however.
SCPI command: :SYSTem:ERRor:ALL? or :SYSTem:ERRor[:NEXT]?
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Device-Specific Error Messages
9.2.2 Permanent messages
Permanent messages are displayed if an error occurs that impairs further instrument
operation, e.g. a hardware fault. The error signaled by a permanent message must be
eliminated before correct instrument operation can be ensured.
The message is displayed until the error is eliminated. It covers the status display in
the info line. After error elimination, the message automatically disappears and is also
recorded in the history.
SCPI command: :SYSTem:SERRor?
9.3 SCPI-Error Messages
The SCPI error messages are the same in all SCPI instruments. Detailed information
and an overview of all error messages as defined in SCPI standard can be found in the
corresponding documentation.
The errors are assigned negative numbers. The error text being entered into the error/
event queue or being displayed is printed in bold face on the left together with the error
code. Below the error text, there is an explanation as to the respective error.
9.4 Device-Specific Error Messages
The following table contains all error messages specific for the instrument in alphabetical order, as well as an explanation of the error situation. The positive error codes
mark the errors specific of the instrument.
The device-specific error messages set bit 3 in the ESR register.
The index provides a list of the error messages sorted according to their error codes.
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Device-Specific Error Messages
Error
Code
Error
Description
50
Extern reference out of External reference is selected but no
range or disconnected external signal is applied or the signal
is out of range.
Remedy
●
●
140
This modulation forces
other modulations off
Check the selected reference signal source (internal
or external) in the "Setup >
Reference Oscillator" dialog.
Change setting to 'internal' if
no appropriate external
source is available.
A modulation has been switched on
which cannot be used at the same
time as an already active modulation.
The previous modulation has been
switched off.
Example: Enabling FM modulation
switches PM modulation off.
180
Adjustment failed
Adjustment could not be executed
The adjustment data have to be
generated first by an internal or
external adjustment or to be loaded into the device (see Chapter 5.2.3.1, "Internal Adjustments", on page 81.
182
Adjustment data missing
Adjustment data are missing.
The adjustment data have to be
generated first by an internal or
external adjustment or to be loaded into the instrument.
183
Adjustment data invalid
Adjustment data are invalid and must
be restored.
The adjustment data have to be
generated again by an internal or
external adjustment or to be loaded into the instrument.
200
Cannot access hardware
The data transmission to a module
was unsuccessful.
The module is not installed, not
properly installed or missing.
201
Hardware revision out
of date
A later version of certain parts of the
instrument is necessary to execute
the function selected.
The driver does not support the
installed version of a module.
202
Cannot access the
EEPROM
A error occurs when writing or reading The EEPROM might be defect
a EEPROM.
and has to be replaced.
203
Invalid EEPROM data
Reading a EEPROM is possible, however the data are inconsistent.
204
Driver initialization
failed
Initialization of a driver fails when
booting the instrument firmware.
The driver is not compatible with
the hardware or software configuration of the instrument.
241
No current list
There is no list selected. To execute
the required operation, a list has to be
selected in the related menu.
If no list is available, a new list
must be created.
242
Unknown list type
specified
The list type selected is not valid for
the required operation.
Check the selected list type.
For instance, the file extension for
waveform list files is *.wv. It is not
possible to enter another file extension when selecting a list.
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Resolving Network Connection Failures
Error
Code
Error
Description
Remedy
460
Cannot open file
The selected file can not be opened.
Check the path and file name.
461
Cannot write file
The file can not be written.
Check if the file is read-only.
462
Cannot read file
The file can not be read.
Check if the file contents are
compatible with the file type.
463
Filename missing
The required operation cannot be
executed because the file name is not
specified.
A file name has to be entered
when creating a new list.
464
Invalid filename extension
The file extension is not valid for the
required operation.
Check the file extension.
File contains invalid
data
The selected file contains data that is
not valid for the file type.
Check the file extension.
465
For instance, the file extension
for waveform list files is *.wv. It
is not possible to enter another
file extension when storing a list.
The file extension determines the
data that is valid for this file type. If
the file extension is changed the lists
are no longer recognized and the data
are therefore invalid.
Example: the extension of a waveform file (= *.wv) was changed to
*.txt
9.5 Resolving Network Connection Failures
Several issues may cause failures in the network connection to the instrument. This
section lists the most likely reasons and the recommended solutions.
Common reasons for network connection failures
●
Network connecting cables and cable connectors of poor quality
●
Incompatibility between the network interface of the R&S SMC and certain
switches or routers available on the market
●
An invalid IP address assigned to the instrument
Possible solutions
Risk of connection errors
Before configuring the network, changing IP addresses or exchanging hardware, consult your network administrator.
Connection errors can affect the entire network.
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Obtaining Technical Support
●
Check the network infrastructure. Exchange connecting cables if obvious damage
is visible.
●
Observe the link status LED on the R&S SMC or the connected network device.
The link status LED is located next to the LAN connector.
If a link failure is detected, connect the instrument to a different device port or to a
different network device.
●
Check whether the LAN interface and the required LAN services are enabled.
See "LAN Services" on page 101.
●
Check whether the IP address of the instrument is within the network's address
range.
See Chapter 5.2.3.10, "Network Settings ", on page 91.
Check whether IP addresses that were set manually or obtained via the Zeroconf
(APIPA) protocol are valid.
9.6 Obtaining Technical Support
If problems occur, the instrument generates error messages which in most cases will
be sufficient for you to detect the cause of an error and find a remedy. Error message
types are described in Chapter 9, "Status Information, Error Messages and Troubleshooting", on page 372.
In addition, our customer support centers are there to assist you in solving any problems that you may encounter with your R&S SMC. We will find solutions more quickly
and efficiently if you provide us with the information listed below.
●
●
The following dialog boxes in the "Setup > System" menu provide useful information:
–
Hardware Configuration: hardware assemblies
–
Software/Options: the status of all software and hardware options installed on
your instrument
System Messages: displayed in the "Info" line and provide information on any
errors that may have occurred
Collect the error information and send an e-mail in which you describe the problem to
the customer support address for your region as listed at the beginning of the
R&S SMC Getting Started manual.
To remove sensitive data
► For information on how to handle or remove the sensitive data from your instrument, refer to the description "Resolving Security Issues when working with
R&S SMC", provided at the product homepage.
Packing and transporting the instrument
If the instrument needs to be transported or shipped, e.g. due to damage during delivery, observe the notes described in Chapter 2.3.2, "Unpacking and Checking the
Instrument", on page 25.
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Hardware Interfaces
GPIB Bus Interface
Annex
A Hardware Interfaces
This section covers hardware related topics, like pin assignment of the GPIB bus interface.
The remote control interfaces are described in detailes in Chapter 6, "Remote Control
Basics", on page 190.
All other interfaces are described in sections "Legend of Front Planel" and "Legend of
Rear Panel" in the Quick Start Guide.
For specifications refer to the data sheet.
A.1 GPIB Bus Interface
Pin assignment
Figure A-1: Pin assignment of GPIB bus interface
Bus lines
●
Data bus with 8 lines D0 to D7:
The transmission is bit-parallel and byte-serial in the ASCII/ISO code. D0 is the
least significant bit, D7 the most significant bit.
●
Control bus with five lines:
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GPIB Bus Interface
IFC (Interface Clear): active LOW resets the interfaces of the instruments connected to the default setting.
ATN (Attention): active LOW signals the transmission of interface messages, inactive HIGH signals the transmission of device messages.
SRQ (Service Request): active LOW enables the connected device to send a service request to the controller.
REN (Remote Enable): active LOW permits switchover to remote control.
EOI (End or Identify): has two functions in connection with ATN:
●
–
ATN=HIGH active LOW marks the end of data transmission.
–
ATN=LOW active LOW triggers a parallel poll.
Handshake bus with three lines:
DAV (Data Valid): active LOW signals a valid data byte on the data bus.
NRFD (Not Ready For Data): active LOW signals that one of the connected devices is not ready for data transfer.
NDAC (Not Data Accepted): active LOW signals that the instrument connected is
accepting the data on the data bus.
Interface Functions
Instruments which can be controlled via GPIB bus can be equipped with different interface functions. The interface function for the R&S SMC are listed in the following table.
Table A-1: GPIB bus interface functions
Control character
Interface function
SH1
Handshake source function (source handshake), full capability
AH1
Handshake sink function (acceptor handshake), full capability
L4
Listener function, full capability, de-addressed by MTA.
T6
Talker function, full capability, ability to respond to serial poll, deaddressed by MLA
SR1
Service request function (Service Request), full capability
PP1
Parallel poll function, full capability
RL1
Remote/Local switch over function, full capability
DC1
Reset function (Device Clear), full capability
DT1
Trigger function (Device Trigger), full capability
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List of Commands
List of Commands
:CALibration<hw>:ALL[:MEASure]?...............................................................................................................240
:CALibration<hw>:FMOFfset[:MEASure]?..................................................................................................... 240
:CALibration<hw>:FREQuency[:MEASure]?................................................................................................. 240
:CALibration<hw>:LEVel:EXTern:DATA........................................................................................................ 241
:CALibration<hw>:LEVel[:MEASure]?........................................................................................................... 241
:CALibration<hw>:ROSCillator[:DATA]..........................................................................................................241
:DIAGnostic:INFO:OTIMe?............................................................................................................................ 243
:DIAGnostic:INFO:POCount?........................................................................................................................ 243
:DIAGnostic<hw>:BGINfo:CATalog?............................................................................................................. 243
:DIAGnostic<hw>:BGINfo?............................................................................................................................ 242
:DISPlay:ANNotation:AMPLitude...................................................................................................................244
:DISPlay:ANNotation:FREQuency................................................................................................................. 244
:DISPlay:ANNotation[:ALL]............................................................................................................................ 244
:DISPlay:DIALog:CLOSe............................................................................................................................... 245
:DISPlay:DIALog:CLOSe:ALL........................................................................................................................245
:DISPlay:DIALog:ID?..................................................................................................................................... 245
:DISPlay:DIALog:OPEN.................................................................................................................................245
:DISPlay:PSAVe:HOLDoff............................................................................................................................. 245
:DISPlay:PSAVe[:STATe].............................................................................................................................. 246
:DISPlay:UPDate........................................................................................................................................... 246
:FORMat:BORDer..........................................................................................................................................247
:FORMat:SREGister...................................................................................................................................... 247
:FORMat[:DATA]............................................................................................................................................247
:HCOPy:DATA?............................................................................................................................................. 248
:HCOPy:DEVice.............................................................................................................................................249
:HCOPy:DEVice:LANGuage..........................................................................................................................249
:HCOPy:FILE[:NAME]....................................................................................................................................250
:HCOPy:FILE[:NAME]:AUTO:DIRectory........................................................................................................250
:HCOPy:FILE[:NAME]:AUTO:DIRectory:CLEar.............................................................................................251
:HCOPy:FILE[:NAME]:AUTO:FILE?.............................................................................................................. 251
:HCOPy:FILE[:NAME]:AUTO:STATe.............................................................................................................254
:HCOPy:FILE[:NAME]:AUTO?.......................................................................................................................250
:HCOPy:FILE[:NAME]:AUTO[:FILE]:DAY:STATe..........................................................................................252
:HCOPy:FILE[:NAME]:AUTO[:FILE]:DAY?....................................................................................................251
:HCOPy:FILE[:NAME]:AUTO[:FILE]:MONTh:STATe.................................................................................... 252
:HCOPy:FILE[:NAME]:AUTO[:FILE]:MONTh?...............................................................................................252
:HCOPy:FILE[:NAME]:AUTO[:FILE]:NUMBer?............................................................................................. 253
:HCOPy:FILE[:NAME]:AUTO[:FILE]:PREFix................................................................................................. 253
:HCOPy:FILE[:NAME]:AUTO[:FILE]:PREFix:STATe.....................................................................................253
:HCOPy:FILE[:NAME]:AUTO[:FILE]:YEAR:STATe....................................................................................... 254
:HCOPy:FILE[:NAME]:AUTO[:FILE]:YEAR?................................................................................................. 254
:HCOPy:IMAGe:FORMat............................................................................................................................... 254
:HCOPy:IMAGe:SIZE.....................................................................................................................................255
:HCOPy[:EXECute]........................................................................................................................................249
:INITiate<ch>[:POWer]:CONTinuous.............................................................................................................269
:KBOard:LANGuage...................................................................................................................................... 255
:KBOard:LAYout............................................................................................................................................ 255
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List of Commands
:MEMory:HFRee?.......................................................................................................................................... 262
:MMEMory:CATalog:LENGth?.......................................................................................................................259
:MMEMory:CATalog?.....................................................................................................................................259
:MMEMory:CDIRectory.................................................................................................................................. 260
:MMEMory:COPY.......................................................................................................................................... 260
:MMEMory:DATA...........................................................................................................................................261
:MMEMory:DCATalog:LENGth?.................................................................................................................... 262
:MMEMory:DCATalog?..................................................................................................................................261
:MMEMory:DELete.........................................................................................................................................262
:MMEMory:LOAD:STATe...............................................................................................................................263
:MMEMory:MDIRectory..................................................................................................................................263
:MMEMory:MOVE.......................................................................................................................................... 263
:MMEMory:MSIS............................................................................................................................................264
:MMEMory:RDIRectory.................................................................................................................................. 264
:MMEMory:STORe:STATe............................................................................................................................ 264
:OUTPut<hw>:AFIXed:RANGe:LOWer?....................................................................................................... 265
:OUTPut<hw>:AFIXed:RANGe:UPPer?........................................................................................................ 265
:OUTPut<hw>:AMODe.................................................................................................................................. 266
:OUTPut<hw>:IMPedance?...........................................................................................................................266
:OUTPut<hw>:PROTection:CLEar................................................................................................................ 266
:OUTPut<hw>:PROTection:TRIPped?.......................................................................................................... 267
:OUTPut<hw>[:STATe]..................................................................................................................................267
:OUTPut<hw>[:STATe]:PON......................................................................................................................... 267
:READ<ch>[:POWer]?................................................................................................................................... 269
:SENSe<ch>:UNIT[:POWer].......................................................................................................................... 277
:SENSe<ch>[:POWer]:APERture:DEFault:STATe........................................................................................ 268
:SENSe<ch>[:POWer]:APERture:TIMe......................................................................................................... 269
:SENSe<ch>[:POWer]:CORRection:SPDevice:STATe................................................................................. 270
:SENSe<ch>[:POWer]:DISPlay:PERManent:PRIority................................................................................... 271
:SENSe<ch>[:POWer]:DISPlay:PERManent:STATe.....................................................................................270
:SENSe<ch>[:POWer]:FILTer:LENGth:AUTO?............................................................................................. 271
:SENSe<ch>[:POWer]:FILTer:LENGth[:USER]............................................................................................. 271
:SENSe<ch>[:POWer]:FILTer:NSRatio......................................................................................................... 272
:SENSe<ch>[:POWer]:FILTer:NSRatio:MTIMe............................................................................................. 272
:SENSe<ch>[:POWer]:FILTer:SONCe.......................................................................................................... 273
:SENSe<ch>[:POWer]:FILTer:TYPE............................................................................................................. 273
:SENSe<ch>[:POWer]:FREQuency...............................................................................................................274
:SENSe<ch>[:POWer]:LOGGing:STATe....................................................................................................... 274
:SENSe<ch>[:POWer]:OFFSet......................................................................................................................274
:SENSe<ch>[:POWer]:OFFSet:STATe..........................................................................................................274
:SENSe<ch>[:POWer]:SOURce.................................................................................................................... 275
:SENSe<ch>[:POWer]:ZERO........................................................................................................................ 276
:SOURce<hw>:PRESet................................................................................................................................. 238
:STATus:OPERation:CONDition....................................................................................................................343
:STATus:OPERation:ENABle........................................................................................................................ 344
:STATus:OPERation:NTRansition................................................................................................................. 344
:STATus:OPERation:PTRansition................................................................................................................. 344
:STATus:OPERation[:EVENt]........................................................................................................................ 344
:STATus:PRESet........................................................................................................................................... 345
:STATus:QUEStionable:CONDition............................................................................................................... 345
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List of Commands
:STATus:QUEStionable:ENABle....................................................................................................................345
:STATus:QUEStionable:NTRansition............................................................................................................ 346
:STATus:QUEStionable:PTRansition.............................................................................................................346
:STATus:QUEStionable[:EVENt]................................................................................................................... 345
:STATus:QUEue[:NEXT]?..............................................................................................................................346
:SYSTem:COMMunicate:GPIB:LTERminator................................................................................................351
:SYSTem:COMMunicate:GPIB:RESource?...................................................................................................355
:SYSTem:COMMunicate:GPIB[:SELF]:ADDRess......................................................................................... 352
:SYSTem:COMMunicate:HISLip:RESource?................................................................................................ 355
:SYSTem:COMMunicate:NETWork:IPADdress.............................................................................................353
:SYSTem:COMMunicate:NETWork:IPADdress:MODE................................................................................. 353
:SYSTem:COMMunicate:NETWork:MACaddress......................................................................................... 354
:SYSTem:COMMunicate:NETWork:RESource?............................................................................................355
:SYSTem:COMMunicate:NETWork:RESTart................................................................................................ 354
:SYSTem:COMMunicate:NETWork:STATus?............................................................................................... 354
:SYSTem:COMMunicate:NETWork[:COMMon]:DOMain.............................................................................. 352
:SYSTem:COMMunicate:NETWork[:COMMon]:HOSTname.........................................................................352
:SYSTem:COMMunicate:NETWork[:COMMon]:WORKgroup....................................................................... 352
:SYSTem:COMMunicate:NETWork[:IPADdress]:DNS.................................................................................. 353
:SYSTem:COMMunicate:NETWork[:IPADdress]:GATeway.......................................................................... 353
:SYSTem:COMMunicate:NETWork[:IPADdress]:SUBNet:MASK..................................................................354
:SYSTem:COMMunicate:SERial:BAUD.........................................................................................................356
:SYSTem:COMMunicate:SERial:PARity........................................................................................................356
:SYSTem:COMMunicate:SERial:RESource?................................................................................................ 356
:SYSTem:COMMunicate:SERial:SBITs.........................................................................................................357
:SYSTem:COMMunicate:SOCKet:RESource?.............................................................................................. 357
:SYSTem:COMMunicate:USB:RESource?....................................................................................................355
:SYSTem:DATE.............................................................................................................................................359
:SYSTem:DISPlay:UPDate............................................................................................................................359
:SYSTem:DLOCk...........................................................................................................................................350
:SYSTem:ERRor:ALL?.................................................................................................................................. 348
:SYSTem:ERRor:CODE:ALL?....................................................................................................................... 348
:SYSTem:ERRor:CODE[:NEXT]?..................................................................................................................349
:SYSTem:ERRor:COUNt?............................................................................................................................. 349
:SYSTem:ERRor[:NEXT]?............................................................................................................................. 349
:SYSTem:FPReset.........................................................................................................................................239
:SYSTem:HCLear.......................................................................................................................................... 360
:SYSTem:IDENtification.................................................................................................................................357
:SYSTem:KLOCk...........................................................................................................................................350
:SYSTem:LANGuage.....................................................................................................................................357
:SYSTem:MMEMory:PATH:USER?...............................................................................................................361
:SYSTem:OSYStem?.....................................................................................................................................361
:SYSTem:PRESet..........................................................................................................................................239
:SYSTem:PROTect<ch>[:STATe]..................................................................................................................358
:SYSTem:REBoot.......................................................................................................................................... 358
:SYSTem:RESTart.........................................................................................................................................358
:SYSTem:SERRor?....................................................................................................................................... 350
:SYSTem:SHUTdown.................................................................................................................................... 359
:SYSTem:STARtup:COMPlete?.................................................................................................................... 359
:SYSTem:TIME..............................................................................................................................................360
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List of Commands
:SYSTem:TIME:ZONE................................................................................................................................... 360
:SYSTem:TIME:ZONE:CATalog?.................................................................................................................. 360
:SYSTem:ULOCk...........................................................................................................................................351
:SYSTem:VERSion?......................................................................................................................................361
:SYSTem:WAIT..............................................................................................................................................361
:TEST<hw>:ALL:RESult?.............................................................................................................................. 362
:TEST<hw>:ALL:STARt.................................................................................................................................362
:TEST<hw>:DIRect........................................................................................................................................363
:TRIGger<hw>:FSWeep:SOURce................................................................................................................. 364
:TRIGger<hw>:FSWeep[:IMMediate].............................................................................................................364
:TRIGger<hw>:LFFSweep.............................................................................................................................365
:TRIGger<hw>:LFFSweep:IMMediate........................................................................................................... 366
:TRIGger<hw>:LFFSweep:SOURce..............................................................................................................365
:TRIGger<hw>:PSWeep:SOURce................................................................................................................. 366
:TRIGger<hw>:PSWeep[:IMMediate]............................................................................................................ 367
:TRIGger<hw>[:IMMediate]............................................................................................................................369
:TRIGger<hw>[:SWEep]:SOURce................................................................................................................. 367
:TRIGger<hw>[:SWEep][:IMMediate]............................................................................................................ 368
:UNIT:ANGLe.................................................................................................................................................369
:UNIT:POWer.................................................................................................................................................369
[:SOURce]:CORRection:CSET:CATalog?..................................................................................................... 280
[:SOURce]:CORRection:CSET:DELete......................................................................................................... 282
[:SOURce]:INPut:TRIGger:SLOPe................................................................................................................ 298
[:SOURce]:LFOutput:VOLTage..................................................................................................................... 307
[:SOURce]:LFOutput[:STATe]........................................................................................................................302
[:SOURce]:LFOutput<ch>:FREQuency......................................................................................................... 300
[:SOURce]:ROSCillator:EXTernal:FREQuency............................................................................................. 330
[:SOURce]:ROSCillator:EXTernal:RFOFf[:STATe]........................................................................................330
[:SOURce]:ROSCillator:SOURce...................................................................................................................331
[:SOURce]:ROSCillator[:INTernal]:ADJust:VALue.........................................................................................331
[:SOURce]:ROSCillator[:INTernal]:ADJust[:STATe]...................................................................................... 331
[:SOURce<hw>]:AM:EXTernal:COUPling......................................................................................................278
[:SOURce<hw>]:AM:SENSitivity?..................................................................................................................278
[:SOURce<hw>]:AM:SOURce....................................................................................................................... 279
[:SOURce<hw>]:AM:STATe.......................................................................................................................... 279
[:SOURce<hw>]:AM[:DEPTh]........................................................................................................................ 278
[:SOURce<hw>]:CORRection:CSET:DATA:FREQuency.............................................................................. 281
[:SOURce<hw>]:CORRection:CSET:DATA:FREQuency:POINts?............................................................... 281
[:SOURce<hw>]:CORRection:CSET:DATA:POWer......................................................................................281
[:SOURce<hw>]:CORRection:CSET:DATA:POWer:POINts?....................................................................... 282
[:SOURce<hw>]:CORRection:CSET:DATA[:SENSor<ch>][:POWer]:SONCe.............................................. 282
[:SOURce<hw>]:CORRection:CSET[:SELect]...............................................................................................287
[:SOURce<hw>]:CORRection:DEXChange:AFILe:CATalog?....................................................................... 283
[:SOURce<hw>]:CORRection:DEXChange:AFILe:EXTension......................................................................283
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SELect............................................................................284
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SEParator:COLumn....................................................... 284
[:SOURce<hw>]:CORRection:DEXChange:AFILe:SEParator:DECimal....................................................... 285
[:SOURce<hw>]:CORRection:DEXChange:EXECute................................................................................... 285
[:SOURce<hw>]:CORRection:DEXChange:MODE....................................................................................... 286
[:SOURce<hw>]:CORRection:DEXChange:SELect...................................................................................... 286
Operating Manual 1411.4060.32 ─ 09
385
R&S®SMC100A
List of Commands
[:SOURce<hw>]:CORRection:VALue?..........................................................................................................288
[:SOURce<hw>]:CORRection:ZERoing:STATe.............................................................................................288
[:SOURce<hw>]:CORRection[:STATe]..........................................................................................................287
[:SOURce<hw>]:FM:EXTernal:COUPling......................................................................................................289
[:SOURce<hw>]:FM:EXTernal:DEViation......................................................................................................289
[:SOURce<hw>]:FM:INTernal:DEViation....................................................................................................... 289
[:SOURce<hw>]:FM:SENSitivity?.................................................................................................................. 290
[:SOURce<hw>]:FM:SOURce........................................................................................................................290
[:SOURce<hw>]:FM:STATe...........................................................................................................................291
[:SOURce<hw>]:FM[:DEViation]....................................................................................................................288
[:SOURce<hw>]:FREQuency:CENTer.......................................................................................................... 291
[:SOURce<hw>]:FREQuency:MANual...........................................................................................................293
[:SOURce<hw>]:FREQuency:MODE.............................................................................................................294
[:SOURce<hw>]:FREQuency:MULTiplier...................................................................................................... 294
[:SOURce<hw>]:FREQuency:OFFSet...........................................................................................................295
[:SOURce<hw>]:FREQuency:SPAN..............................................................................................................295
[:SOURce<hw>]:FREQuency:STARt.............................................................................................................296
[:SOURce<hw>]:FREQuency:STEP:MODE.................................................................................................. 297
[:SOURce<hw>]:FREQuency:STEP[:INCRement]........................................................................................ 297
[:SOURce<hw>]:FREQuency:STOP..............................................................................................................296
[:SOURce<hw>]:FREQuency[:CW|FIXed].....................................................................................................292
[:SOURce<hw>]:FREQuency[:CW|FIXed]:RCL.............................................................................................293
[:SOURce<hw>]:INPut:MODext:IMPedance..................................................................................................298
[:SOURce<hw>]:LFOutput:FREQuency:MANual...........................................................................................300
[:SOURce<hw>]:LFOutput:FREQuency:MODE.............................................................................................301
[:SOURce<hw>]:LFOutput:FREQuency:STARt.............................................................................................301
[:SOURce<hw>]:LFOutput:FREQuency:STOP..............................................................................................302
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:DWELl............................................................................. 302
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:EXECute......................................................................... 302
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:MODE............................................................................. 303
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:POINts.............................................................................304
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:RETRace.........................................................................304
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:RUNNing?....................................................................... 305
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:SHAPe............................................................................ 305
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:SPACing..........................................................................305
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP:LOGarithmic..........................................................307
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP[:LINear]................................................................. 306
[:SOURce<hw>]:MODulation[:ALL][:STATe]................................................................................................. 308
[:SOURce<hw>]:PGENerator:STATe............................................................................................................ 308
[:SOURce<hw>]:PHASe................................................................................................................................ 309
[:SOURce<hw>]:PHASe:REFerence............................................................................................................. 309
[:SOURce<hw>]:PM:EXTernal:COUPling......................................................................................................310
[:SOURce<hw>]:PM:EXTernal:DEViation......................................................................................................311
[:SOURce<hw>]:PM:INTernal:DEViation.......................................................................................................311
[:SOURce<hw>]:PM:SENSitivity?..................................................................................................................311
[:SOURce<hw>]:PM:SOURce....................................................................................................................... 312
[:SOURce<hw>]:PM:STATe.......................................................................................................................... 312
[:SOURce<hw>]:PM[:DEViation]....................................................................................................................310
[:SOURce<hw>]:POWer:ALC:OMODe.......................................................................................................... 313
[:SOURce<hw>]:POWer:ALC:SONCe...........................................................................................................313
Operating Manual 1411.4060.32 ─ 09
386
R&S®SMC100A
List of Commands
[:SOURce<hw>]:POWer:ALC[:STATe].......................................................................................................... 313
[:SOURce<hw>]:POWer:ATTenuation:RFOFf:MODE................................................................................... 314
[:SOURce<hw>]:POWer:EMF:STATe........................................................................................................... 314
[:SOURce<hw>]:POWer:LIMit[:AMPLitude]...................................................................................................316
[:SOURce<hw>]:POWer:LMODe...................................................................................................................317
[:SOURce<hw>]:POWer:MANual.................................................................................................................. 317
[:SOURce<hw>]:POWer:MODE.................................................................................................................... 318
[:SOURce<hw>]:POWer:POWer................................................................................................................... 318
[:SOURce<hw>]:POWer:SPC:CRANge.........................................................................................................319
[:SOURce<hw>]:POWer:SPC:DELay............................................................................................................ 319
[:SOURce<hw>]:POWer:SPC:PEAK............................................................................................................. 320
[:SOURce<hw>]:POWer:SPC:SELect........................................................................................................... 320
[:SOURce<hw>]:POWer:SPC:STATe............................................................................................................320
[:SOURce<hw>]:POWer:SPC:TARGet..........................................................................................................320
[:SOURce<hw>]:POWer:STARt.....................................................................................................................321
[:SOURce<hw>]:POWer:STEP:MODE.......................................................................................................... 322
[:SOURce<hw>]:POWer:STEP[:INCRement]................................................................................................ 321
[:SOURce<hw>]:POWer:STOP..................................................................................................................... 322
[:SOURce<hw>]:POWer[:LEVel][:IMMediate]:OFFSet.................................................................................. 315
[:SOURce<hw>]:POWer[:LEVel][:IMMediate]:RCL........................................................................................316
[:SOURce<hw>]:POWer[:LEVel][:IMMediate][:AMPLitude]........................................................................... 315
[:SOURce<hw>]:PULM:DELay...................................................................................................................... 325
[:SOURce<hw>]:PULM:DOUBle:DELay........................................................................................................ 326
[:SOURce<hw>]:PULM:DOUBle:STATe........................................................................................................326
[:SOURce<hw>]:PULM:DOUBle:WIDTh........................................................................................................326
[:SOURce<hw>]:PULM:MODE...................................................................................................................... 326
[:SOURce<hw>]:PULM:PERiod.....................................................................................................................327
[:SOURce<hw>]:PULM:POLarity................................................................................................................... 327
[:SOURce<hw>]:PULM:SOURce...................................................................................................................328
[:SOURce<hw>]:PULM:STATe......................................................................................................................328
[:SOURce<hw>]:PULM:TRIGger:EXTernal:GATE:POLarity......................................................................... 328
[:SOURce<hw>]:PULM:TRIGger:EXTernal:SLOPe.......................................................................................329
[:SOURce<hw>]:PULM:TRIGger:MODE....................................................................................................... 329
[:SOURce<hw>]:PULM:WIDTh......................................................................................................................329
[:SOURce<hw>]:SWEep:POWer:DWELl.......................................................................................................339
[:SOURce<hw>]:SWEep:POWer:EXECute................................................................................................... 339
[:SOURce<hw>]:SWEep:POWer:MODE....................................................................................................... 339
[:SOURce<hw>]:SWEep:POWer:POINts...................................................................................................... 340
[:SOURce<hw>]:SWEep:POWer:RETRace.................................................................................................. 341
[:SOURce<hw>]:SWEep:POWer:RUNNing?.................................................................................................341
[:SOURce<hw>]:SWEep:POWer:SHAPe...................................................................................................... 341
[:SOURce<hw>]:SWEep:POWer:SPACing:MODE?......................................................................................342
[:SOURce<hw>]:SWEep:POWer:STEP[:LOGarithmic]................................................................................. 342
[:SOURce<hw>]:SWEep:RESet[:ALL]...........................................................................................................343
[:SOURce<hw>]:SWEep[:FREQuency]:DWELl............................................................................................. 333
[:SOURce<hw>]:SWEep[:FREQuency]:EXECute......................................................................................... 334
[:SOURce<hw>]:SWEep[:FREQuency]:MODE............................................................................................. 334
[:SOURce<hw>]:SWEep[:FREQuency]:POINts.............................................................................................335
[:SOURce<hw>]:SWEep[:FREQuency]:RETRace.........................................................................................335
[:SOURce<hw>]:SWEep[:FREQuency]:RUNNing?....................................................................................... 336
Operating Manual 1411.4060.32 ─ 09
387
R&S®SMC100A
List of Commands
[:SOURce<hw>]:SWEep[:FREQuency]:SHAPe............................................................................................ 336
[:SOURce<hw>]:SWEep[:FREQuency]:SPACing..........................................................................................336
[:SOURce<hw>]:SWEep[:FREQuency]:STEP:LOGarithmic..........................................................................338
[:SOURce<hw>]:SWEep[:FREQuency]:STEP[:LINear]................................................................................. 337
*CLS...............................................................................................................................................................234
*ESE.............................................................................................................................................................. 234
*ESR?............................................................................................................................................................ 234
*IDN?............................................................................................................................................................. 235
*IST?..............................................................................................................................................................235
*OPC..............................................................................................................................................................235
*OPT?............................................................................................................................................................ 235
*PRE.............................................................................................................................................................. 236
*PSC.............................................................................................................................................................. 236
*RCL.............................................................................................................................................................. 236
*RST.............................................................................................................................................................. 236
*SAV.............................................................................................................................................................. 237
*SRE.............................................................................................................................................................. 237
*STB?.............................................................................................................................................................237
*TRG..............................................................................................................................................................237
*TST?.............................................................................................................................................................237
*WAI...............................................................................................................................................................238
SENSe<ch>[:POWer]:SNUMber?..................................................................................................................275
SENSe<ch>[:POWer]:STATus[:DEVice]?..................................................................................................... 275
SENSe<ch>[:POWer]:SVERsion?.................................................................................................................276
SENSe<ch>[:POWer]:TYPE?........................................................................................................................276
Operating Manual 1411.4060.32 ─ 09
388
R&S®SMC100A
Index
Index
Symbols
*OPC ............................................................................... 222
*OPC? ............................................................................. 222
*RST ................................................................................ 231
*WAI ................................................................................ 222
/var directory ................................................................... 256
&GTL ............................................................................... 200
&GTR .............................................................................. 200
&LLO ............................................................................... 200
9.91E37
Remote control ......................................................... 220
50 - Extern reference out of range or disconnected ........ 377
140 - This modulation forces other modulations off ........ 377
180 - Adjustment failed ................................................... 377
182 - Adjustment data missing ........................................ 377
183 - Adjustment data invalid .......................................... 377
200 - Cannot access hardware ....................................... 377
201 - Hardware revision out of date ................................ 377
202 - Cannot access the EEPROM ................................. 377
203 - Invalid EEPROM data ............................................ 377
204 - river initialization failed ........................................... 377
241 - No current list ......................................................... 377
242 - Unknown list type specified .................................... 377
460 - Cannot open file ..................................................... 378
461 - Cannot write file ..................................................... 378
462 - Cannot read file ...................................................... 378
463 - Filename missing ................................................... 378
464 - Invalid filename extension ...................................... 378
465 - File contains invalid data ........................................ 378
A
Abort button .......................................................................69
Abort calculation ................................................................ 69
AC supply ......................................................................... 22
Accept
Security Settings ....................................................... 105
Access denied ................................................................... 62
Address mode
Network settings ......................................................... 92
Adjust All ........................................................................... 82
Adjust FM Offset ............................................................. 240
Adjust Level ....................................................................... 82
Adjust Synthesis ................................................................ 82
Adjust Synthesis Extension ............................................... 82
Adjustment active
Reference oscillator .................................................. 128
Adjustment Data .............................................................. 133
Adjustment frequency
Reference oscillator .................................................. 128
Adjustments
All ................................................................................ 82
ALC (automatic level control) .................................. 134, 313
ALC Auto ......................................................................... 374
ALC On ................................................................... 134, 374
ALC S&H ......................................................................... 374
ALC Table ....................................................................... 374
AM Depth ........................................................................ 172
AM External Coupling ..................................................... 172
AM Sensitivity .................................................................. 172
AM Source ...................................................................... 171
AM State ......................................................................... 171
Operating Manual 1411.4060.32 ─ 09
Amplitude
Annotation (setup security) ....................................... 103
Annotation
Amplitude (security) .................................................. 103
Frequency (security) ................................................. 103
Aperture time
Power sensors .......................................................... 155
Application cards ............................................................... 14
Application notes ............................................................... 14
Applications of the R&S SMC ........................................... 47
Architecture of the instrument ........................................... 45
Arrow keys ........................................................................ 20
Assemblies display ............................................................ 82
ATN ................................................................................. 380
Attention .......................................................................... 380
Attenuator Mode ..............................................................131
Attenuator Settings
Fixed Range (PEP) in ............................................... 132
mode ......................................................................... 131
RF OFF Mode ........................................................... 132
AttFixed ........................................................................... 375
Auto once
Power Sensors ......................................................... 154
Auto Once - Power Sensors ............................................ 273
Auto-negotiation
see Autonegotiation .................................................... 35
Autonegotiation
Failed ........................................................................ 378
Failure ......................................................................... 35
Avahi
LAN Services ............................................................ 102
B
Baudrate
RS232 interface .......................................................... 96
Block data ....................................................................... 217
Bluetooth
RS232 Interface .......................................................... 95
Bluetooth Pin ................................................................... 105
Boolean parameters ........................................................ 217
Brackets .......................................................................... 218
Brochure ............................................................................13
BUSY .............................................................................. 373
C
Case-sensitivity
SCPI ......................................................................... 213
Catch range
NRP-Z level control ................................................... 139
NRP-Z power control ................................................ 319
Center Freq ..................................................................... 161
Change password
Setup (security) ......................................................... 101
Check front panel .............................................................. 89
Performing .................................................................. 89
Settings ....................................................................... 89
Cleaning .......................................................................... 370
Clear status
Remote ..................................................................... 234
Closed loop power control
see NRP-Z level control ............................................ 135
389
R&S®SMC100A
CLPC
see NRP-Z level control ............................................ 135
Colon ............................................................................... 218
Column Separator Import/Export - User Correction data 144
Comma ............................................................................ 218
Command sequence
recommendation ....................................................... 231
Remote ..................................................................... 238
Commands ...................................................................... 192
Brackets .................................................................... 218
Colon ........................................................................ 218
Comma ..................................................................... 218
Command line structure ............................................ 219
Common ................................................................... 192
Double dagger .......................................................... 218
GBIP, addressed ...................................................... 198
GBIP, universal ......................................................... 197
Instrument control ..................................................... 192
Overlapping .............................................................. 221
Question mark .......................................................... 218
Quotation mark ......................................................... 218
SCPI confirmed ......................................................... 192
Sequential ................................................................. 221
Syntax elements ....................................................... 218
Vertical stroke ........................................................... 218
White space .............................................................. 218
Common commands
Syntax ....................................................................... 213
Computer name
Changing .................................................................... 36
see hostname ............................................................. 92
use instead of IP address ........................................... 36
CONDition ....................................................................... 226
Confirm user password
Setup (security) ......................................................... 101
Connection fault
169.254.*.* ................................................................ 378
Connection to an external controller ................................. 37
Connector
GPIB ........................................................................... 22
IEC/IEEE ..................................................................... 22
INSTR TRIG ............................................................... 23
LAN ............................................................................. 23
LF ................................................................................ 21
MOD EXT ................................................................... 20
PULSE EXT ................................................................ 23
PULSE VIDEO ............................................................ 23
REF IN ........................................................................ 23
REF OUT .................................................................... 23
RF ............................................................................... 21
USB type A ................................................................. 23
USB type B ................................................................. 24
Control bus ...................................................................... 380
Controller, external ............................................................ 37
Copy
Several files .............................................................. 117
Copy instrument settings ................................................. 116
Counter ..................................................................... 82, 243
Coupling mode ................................................................ 174
Coupling mode - EXT MOD (AM) .................................... 172
Create New Directory ...................................................... 117
Current Freq (LF Sweep) ................................................ 184
Current Freq (RF Sweep) ................................................ 161
Current Level ................................................................... 167
Current Sensors ................................................................ 86
Cursor keys ....................................................................... 20
Cut ...................................................................................116
Operating Manual 1411.4060.32 ─ 09
Index
D
Data sheet ......................................................................... 13
Data Valid ........................................................................380
DAV ................................................................................. 380
DCL ................................................................................. 197
Deactivate RF output ...................................................... 128
Decimal Point Import/Export - User Correction data ....... 144
DEF ................................................................................. 216
Default gateway
Network settings ......................................................... 93
Default instrument settings .................................. 29, 79, 239
Default values
Remote ..................................................................... 236
Delay
Double pulse ............................................................. 188
Pulse generator ........................................................ 188
Delay time
NRP-Z level control ................................................... 139
NRP-Z power control ................................................ 319
Delete instrument settings ....................................... 117, 262
Delta Phase .....................................................................125
Destination - Hardcopy .................................................... 107
Destination Import/Export
User Correction data ................................................. 144
Device ID ........................................................................... 85
Device-specific commands ............................................. 192
Device-specific error messages ...................................... 376
DHCP ................................................................................ 35
Display .............................................................................. 57
Lock (security) .......................................................... 103
Display priority
Power sensors .......................................................... 151
DISPlay subsystem ......................................................... 243
DNS server
Network settings ......................................................... 93
DNS suffix
Network settings ......................................................... 93
Documentation overview ................................................... 13
Double dagger .................................................................218
Double Pulse ................................................................... 187
Double pulse delay
Pulse generator ........................................................ 188
Double pulse width
Pulse generator ........................................................ 188
DOWN ............................................................................. 216
Dwell time
RF sweep .................................................................. 163
Dwell Time .............................................................. 168, 185
E
Edit User Correction Data ............................................... 141
EFC mode (Electronic Frequency Control) ..................... 127
Electrostatic discharge ...................................................... 25
EMF - Level display ......................................................... 133
EMI suppression ............................................................... 25
Emulation
IDN string .................................................................... 98
Language .................................................................... 97
Mode ........................................................................... 97
Set IDN and OPT to default ........................................ 98
Enable
LAN interface ............................................................ 102
ENABle ............................................................................226
Enable registers
Remote ..................................................................... 236
390
R&S®SMC100A
Enter License Key ............................................................. 85
EOI .................................................................................. 380
Error log .......................................................................... 379
Error messages ......................................................... 59, 372
Adjustment data invalid (183) ................................... 377
Adjustment data missing (182) ................................. 377
Adjustment failed (180) ............................................. 377
Cannot access hardware (200) ................................. 377
Cannot access the EEPROM (202) .......................... 377
Cannot open file (460) .............................................. 378
Cannot read file (462) ............................................... 378
Cannot write file (461) ............................................... 378
Driver initialization failed (204) .................................. 377
Extern reference out of range or disconnected (50) . 377
File contains invalid data (465) ................................. 378
Filename missing (463) ............................................ 378
Hardware revision out of date (201) ......................... 377
Invalid EEPROM data (203) ..................................... 377
Invalid filename extension (464) ............................... 378
No current list (241) .................................................. 377
This modulation forces other modulations off (140) .. 377
Unknown list type specified (242) ............................. 377
Error Messages ............................................................... 375
device-specific .......................................................... 376
SCPI ......................................................................... 376
Error messages - display list ........................................... 350
Error queue ..................................................................... 227
Error queue query ................................................... 348, 349
Error queues
recommendations ..................................................... 232
ESD ................................................................................... 25
ESE (event status enable register ) ................................ 228
ESR ................................................................................. 224
ESR (event status register) ............................................. 228
EVENt ............................................................................. 226
Event status enable register (ESE) ................................. 228
Remote ..................................................................... 234
Event status register (ESR) ............................................. 228
Remote ..................................................................... 234
Exclude Frequency ......................................................... 114
Exclude Level .................................................................. 114
Execute single sweep
Frequency sweep ..................................................... 160
Execute Single Sweep
Level Sweep ............................................................. 166
Execute Single Sweep - LF Sweep ................................. 183
Expiration date of option ................................................... 84
Export Deactivation Response .......................................... 85
EXT REF ......................................................................... 373
Extension Import/Export - User Correction data ............. 144
External frequency
Reference oscillator .................................................. 128
External modulation signal .............................................. 171
FM ............................................................................. 173
ɸM ............................................................................ 175
F
Factory preset ................................................................. 105
Failure
Network connection .................................................... 35
Features of R&S SMC ....................................................... 47
File - Hardcopy dialog ..................................................... 107
File list ............................................................................. 259
File menu
Save/Recall ............................................................... 112
File Name - Hardcopy ..................................................... 108
Operating Manual 1411.4060.32 ─ 09
Index
File setup - Hardcopy ...................................................... 108
File type selection ........................................................... 116
Fill Table Range .............................................................. 145
Filter
Power Sensors ......................................................... 153
Filter Length
Power Sensors ......................................................... 153
Filter Length - Power Sensors ......................... 271, 272, 273
Firmware version ............................................................... 84
Floating licenses ............................................................... 84
FM deviation .................................................................... 174
FM external coupling ....................................................... 174
FM sensitivity .................................................................. 174
FM source ....................................................................... 173
FM state .......................................................................... 173
FM-DC mode ................................................................... 126
FREQ OFFSET ............................................................... 372
Frequency ....................................................................... 129
Annotation (setup security) ....................................... 103
LF generator ..................................... 172, 174, 176, 180
Multiplier ................................................................... 124
PM ............................................................................ 187
Power sensors .......................................................... 152
RF signal ................................................................... 121
Set Frequency .......................................................... 122
Frequency - RF sweep ............................................ 160, 161
Frequency (status bar)
RF signal ................................................................... 122
Frequency dialog
RF signal ................................................................... 123
Frequency display ............................................................. 57
Front panel key emulation ................................................. 77
Front panel test
Performing .................................................................. 89
FTP
How to ....................................................................... 117
LAN Services ............................................................ 102
Fuses ................................................................................ 27
G
Gate input polarity ........................................................... 189
Gated
Pulse trigger input ..................................................... 189
Gated signal
Pulse modulation ...................................................... 188
Gateway ............................................................................ 93
GET ................................................................................. 198
Getting started ................................................................... 45
Goto local
Remote channel settings ............................................ 96
GPIB ..................................................................................96
bus address ................................................................ 95
Characteristics .......................................................... 196
interface messages ................................................... 197
Remote control interface ........................................... 190
GPIB address .................................................................. 198
GTL ................................................................................. 198
GUI Language ................................................................... 94
H
Hardcopy - Destination .................................................... 107
Hardcopy - File setup ...................................................... 108
Hardcopy dialog - File ..................................................... 107
Hardware Config ............................................................... 82
Hardware options .............................................................. 83
391
R&S®SMC100A
HiSLIP
Protocol ..................................................................... 194
Resource string ......................................................... 193
Host name
see Computer name ................................................... 36
Hostname
Network settings ......................................................... 92
see Computer name ................................................... 36
HTTP
LAN Services ............................................................ 102
I
Identification
Emulation mode .......................................................... 97
Remote ..................................................................... 235
Identification mode ............................................................ 97
IDN string
Emulation .................................................................... 98
Emulation mode .......................................................... 98
IFC .......................................................................... 197, 380
Impedance
External input ............................................ 172, 175, 177
Import License Key ........................................................... 85
Import/Export
User Correction data ......................................... 143, 144
INF .................................................................................. 216
INFO key ........................................................................... 59
Input connector ........................................................... 20, 23
Installed Assembly ............................................................ 83
Instrument Config .............................................................. 82
Instrument Emulations ...................................................... 96
Instrument messages ...................................................... 191
Instrument settings
Recall ........................................................ 113, 236, 263
Save .......................................................... 112, 237, 264
Instrument Trigger ........................................... 163, 169, 186
Interface
functions (GPIB bus) ................................................. 381
Interface Clear ................................................................. 380
Interface messages ................................................. 191, 195
Interfaces
GPIB ......................................................................... 196
USB .......................................................................... 195
Internal adjustments
Setup .......................................................................... 81
Interrupt ........................................................................... 229
Invalid results
Remote control ......................................................... 220
IP address ....................................................................... 193
Changing .................................................................... 35
Network settings ......................................................... 92
Not recognized .......................................................... 378
IP address mode ............................................................... 92
IST ................................................................................... 224
IST flag
Remote ..................................................................... 235
K
Key
Arrow key .................................................................... 20
BACKSPACE .............................................................. 18
Cursor key .................................................................. 20
DIAGRAM ................................................................... 18
ENTER ........................................................................ 19
ESC ............................................................................ 18
Operating Manual 1411.4060.32 ─ 09
Index
FILE .......................................................................... 111
FREQ .......................................................................... 18
HELP .......................................................................... 16
INFO ........................................................................... 18
LEVEL ......................................................................... 18
LOCAL ........................................................................ 16
MOD ON/OFF ..................................................... 18, 170
PRESET ......................................................... 16, 29, 79
RF ON/OFF ................................................................ 19
SETUP .................................................................. 16, 80
Key - HELP ..................................................................... 110
Key - LOCAL ................................................................... 106
Key combinations .............................................................. 76
Keyboard
Layout ......................................................................... 95
Keyboard Language ........................................................ 255
Keypad .............................................................................. 19
Keywords
see Mnemonics ......................................................... 212
L
LAN
Configuration .............................................................. 34
Interface .................................................................... 192
IP address ................................................................. 193
Remote control interface ........................................... 190
VISA .......................................................................... 193
VXI protocol .............................................................. 194
LAN connection
Not working ................................................................. 35
LAN interface
Avahi ......................................................................... 102
enable ....................................................................... 102
FTP ........................................................................... 102
HTTP ........................................................................ 102
LAN over SCPI ......................................................... 102
SMB (Samba) ........................................................... 102
SSH .......................................................................... 102
VNC .......................................................................... 102
LAN Interface
Services .................................................................... 101
Setup ........................................................................ 101
Language
Emulation .................................................................... 97
Language Keyboard ........................................................ 255
Layout
Keyboard .................................................................... 95
Level ...............................................................................129
limit ................................................................... 131, 139
Power sensors .......................................................... 151
RF output .................................................................. 131
uninterrupted setting ................................................. 131
Level - Step width ............................................................133
Level (Avg.)
Power sensors .......................................................... 151
Level control ............................................................ 134, 313
Level display ..................................................................... 57
Level display EMF ........................................................... 133
Level limit
RF level ............................................................. 131, 139
Level offset ...................................................................... 131
Power Sensors ......................................................... 153
State (power sensors) ............................................... 153
LEVEL OFFSET .............................................................. 373
Level Sweep ....................................................................164
Level user correction ....................................................... 140
392
R&S®SMC100A
LevelSweep .....................................................................374
LF frequency sweep
Retrace ..................................................................... 185
LF gen frequency .................................... 172, 174, 176, 180
LF Gen Voltage ............................................................... 180
LF generator ....................................................................179
Frequency ......................................... 172, 174, 176, 180
LF output ......................................................................... 179
LF Output
State ......................................................................... 180
LF sweep
Step lin ...................................................................... 185
Step log ..................................................................... 185
Step width ................................................................. 185
LF Sweep ........................................................................ 184
LFSweep ......................................................................... 374
License for software option ............................................... 84
License Key .......................................................................84
Limit
Level ................................................................. 131, 139
Linux ..................................................................................32
Linux controller .................................................................. 39
LLO ................................................................................. 197
Load instrument settings ................................. 113, 236, 263
LOC-LLO ......................................................................... 374
Local to remote switchover ..................................... 199, 200
Lock
Display (setup security) ............................................ 103
M
Mac address ...................................................................... 93
Maintenance ......................................................................81
Malfunctions
reacting ..................................................................... 232
Manual Remote Control .................................................... 37
MAX ................................................................................ 216
Maximum deviation ......................................................... 176
FM ............................................................................. 174
Measured level
NRP-Z level control ................................................... 138
Menu structure
Access denied ............................................................ 62
Header ........................................................................ 61
Menu area ................................................................... 62
Messages
Commands ............................................................... 192
Instrument ................................................................. 191
Instrument responses ............................................... 192
Interface .................................................................... 191
MIN .................................................................................. 216
Mnemonics ...................................................................... 212
Optional .................................................................... 214
Mod Gen block .................................................................. 48
MOD OFF ........................................................................ 372
MOD ON/OFF Key .......................................................... 170
Mode
Emulation .................................................................... 97
Level Sweep ............................................................. 164
LF Gen ...................................................................... 181
LF sweep .................................................................. 181
Pulse generator ........................................................ 187
RF frequency sweep ................................................. 157
RF level ..................................................................... 130
Mode Import/Export - User Correction data .................... 143
Operating Manual 1411.4060.32 ─ 09
Index
Modulation
AM ............................................................................ 171
FM ............................................................................. 173
PM ............................................................................ 177
Pulse modulation ...................................................... 177
ɸM ............................................................................ 175
Modulation depth - AM .................................................... 172
Modulation deviation
FM ............................................................................. 174
ɸM ............................................................................ 176
Multi transmitter measurements ...................................... 134
Multiple files
Copy ......................................................................... 117
Multiplier
Frequency ................................................................. 124
N
NAN .................................................................................216
NAN (not a number)
Remote control ......................................................... 220
Navigation keys ................................................................. 20
NDAC .............................................................................. 380
Network
Connection fails ........................................................ 378
Network connection
Error ............................................................................ 35
Network settings ................................................................ 91
Address mode ............................................................. 92
Default gateway .......................................................... 93
DNS server ................................................................. 93
DNS suffix ................................................................... 93
Hostname ................................................................... 92
IP address ................................................................... 92
Status .......................................................................... 91
Subnet mask ............................................................... 93
Workgroup .................................................................. 92
Network status .................................................................. 91
New password
Setup (security) ......................................................... 101
New user password
Setup (security) ......................................................... 101
NINF ................................................................................ 216
No-load voltage (EMF) .................................................... 133
NRFD .............................................................................. 380
NRP-Z Info ........................................................................ 86
NRP-Z level control ......................................................... 135
catch range ............................................................... 139
delay time ................................................................. 139
measured level ......................................................... 138
sensor ....................................................................... 138
state .......................................................................... 138
target level ................................................................ 139
use peak power ........................................................ 139
NRP-Z power control
catch range ............................................................... 319
delay time ................................................................. 319
RF level limit ..................................................... 131, 139
sensor ....................................................................... 320
state .......................................................................... 320
target level ................................................................ 320
use peak power ........................................................ 320
use SParameter ................................................ 139, 155
NRP-Z power viewer
use SParameter ................................................ 139, 155
NTRansition .................................................................... 226
Number of licenses ........................................................... 84
393
R&S®SMC100A
Numeric parameters ........................................................ 215
Numeric values
Special ...................................................................... 216
O
OCXO ................................................................................ 23
Offset
RF signal ................................................................... 124
Offset - Level ................................................................... 131
Old password
Setup (security) ......................................................... 101
Old user password
Setup (security) ......................................................... 101
Online help ........................................................................ 13
Working with ............................................................... 71
Online manual ................................................................... 13
Open source acknowledgment .......................................... 14
Operating concept ............................................................. 45
Operating manual .............................................................. 13
Operating system .............................................................. 32
Operation complete
Remote ..................................................................... 235
Operation hours .............................................................. 243
OPT String ........................................................................ 98
Option
Hardware .................................................................... 83
Software ...................................................................... 83
Option: expiration date ...................................................... 84
Options
Identification (remote) ............................................... 235
Options - Hardcopy ......................................................... 107
OSA ...................................................................................14
Oscillator
Reference ................................................................. 126
Source (reference) .................................................... 127
Output
LF .............................................................................. 179
Output connector ......................................................... 21, 23
Output queue .................................................................. 224
Output Voltage - LF output .............................................. 180
OvenCold ........................................................................ 375
Overlapping commands .................................................. 221
Preventing ................................................................. 222
Overload .......................................................................... 147
OVERLOAD .................................................................... 373
P
Packing ........................................................................... 371
Parallel poll register enable
Remote ..................................................................... 236
Parameters
Block data ................................................................. 217
Boolean ..................................................................... 217
Numeric values ......................................................... 215
SCPI ......................................................................... 215
Special numeric values ............................................. 216
String ........................................................................ 217
Text ........................................................................... 217
Parity
RS232 interface .......................................................... 96
Part numbers ..................................................................... 82
Password
Change (security password) ..................................... 101
Confirm (security password) ..................................... 101
Confirm (user password (security)) ........................... 101
Operating Manual 1411.4060.32 ─ 09
Index
New (security password) .......................................... 101
New (user password (security) ................................. 101
Old (security password) ............................................ 101
Paste ............................................................................... 116
PCI bus ............................................................................. 83
Period
Pulse generator ........................................................ 187
Permanent display
Power sensors .......................................................... 151
Phase
RF signal ................................................................... 125
PhiM
see ɸM ..................................................................... 175
Point-to-point connection .................................................. 34
Polarity
Pulse Modulation ...................................................... 179
Power sensors
Aperture time ............................................................ 155
Auto once .................................................................. 154
Display priority .......................................................... 151
Filter .......................................................................... 153
Frequency ................................................................. 152
Level ......................................................................... 151
Level (Avg.) ............................................................... 151
Level offset ............................................................... 153
NRP-Z level control ................................................... 135
Permanent display .................................................... 151
Power viewer ............................................................ 150
Source ...................................................................... 152
State ......................................................................... 150
State (level offset) ..................................................... 153
Type .......................................................................... 150
Unit ........................................................................... 151
Use default aperture time ......................................... 154
zero ................................................................... 138, 152
Power-On Count ......................................................... 82, 83
Power-On Counter .......................................................... 243
Power-On State ............................................................... 133
PPC ................................................................................. 198
PPE ................................................................................. 224
PPU ................................................................................. 197
Preset ................................................................................ 29
Preset - instrument settings .............................................. 79
Preset instrument settings ......................................... 29, 239
Protection .......................................................................... 98
Protocol
VXI ............................................................................ 194
PTRansition ..................................................................... 226
Pulse delay
Pulse generator ........................................................ 188
Pulse generator ............................................................... 186
Delay ......................................................................... 188
Double pulse delay ................................................... 188
Double pulse width ................................................... 188
Mode ......................................................................... 187
Period ....................................................................... 187
Settings ..................................................................... 186
Trigger mode ............................................................ 188
Video-Sync signal state ............................................ 187
Width ......................................................................... 187
Pulse generator state ...................................................... 187
Pulse mode
Pulse generator ........................................................ 187
Pulse Mode ..................................................................... 187
Pulse modulation .............................................................177
repetition frequency .................................................. 187
Source ...................................................................... 179
394
R&S®SMC100A
State ......................................................................... 178
Trigger mode ............................................................ 188
Pulse period
Pulse generator ........................................................ 187
Pulse trigger input slope .................................................. 188
Pulse width
Pulse generator ........................................................ 187
ɸM
Modulation deviation ................................................. 176
Source ...................................................................... 176
ɸM External Coupling ..................................................... 177
ɸM Sensitivity ................................................................. 176
ɸM State ......................................................................... 176
Q
Queries .................................................................... 192, 220
Status ........................................................................ 230
Question mark ......................................................... 218, 220
Questionable status register ................................... 228, 229
Quick start guide ............................................................... 13
Quotation mark ................................................................ 218
R
Rackmounting ................................................................... 27
Recall instrument settings ....................... 113, 114, 236, 263
Recall intermediate ......................................................... 236
Recall Intermediate ......................................................... 115
Recommendations
remote control programming ..................................... 231
Reference
Source (oscillator) ..................................................... 127
Reference frequency
External ..................................................................... 128
Reference oscillator ........................................................ 126
Adjustment active ..................................................... 128
Adjustment frequency ............................................... 128
External frequency .................................................... 128
RF off state ............................................................... 128
Settings ..................................................................... 127
Source ...................................................................... 127
Registers ......................................................................... 224
Release notes ................................................................... 14
REM-LLO ........................................................................ 374
Remote
Bluetooth ..................................................................... 95
RS232 ......................................................................... 95
REMOTE ......................................................................... 374
Remote access ................................................................. 37
Remote channel
GPIB address ............................................................. 95
Remote channel settings ................................................... 95
Goto local .................................................................... 96
GPIB resource (VISA resource string) ........................ 96
HISLIP resource (VISA resource string) ..................... 96
Network resource (Ethernet resource string) .............. 96
Serial ........................................................................... 96
Socket resource (VISA resource string) ..................... 96
USB VISA resource string .......................................... 96
Remote connection
Not working ................................................................. 35
Remote control
Basics ....................................................................... 190
GPIB address ........................................................... 198
Interfaces .................................................................. 190
Protocols ................................................................... 190
Operating Manual 1411.4060.32 ─ 09
Index
Remote Control
GPIB ......................................................................... 200
Remote control switchover .............................................. 199
Removing sensitive data ................................................. 379
REN .................................................................................380
Rename ...........................................................................117
File ............................................................................ 263
Reset ............................................................................... 160
Reset - RF sweep ........................................................... 160
Reset Delta Phase Display ............................................. 125
Reset instrument settings .................................... 29, 79, 239
Reset values
Remote ..................................................................... 236
Resolving network problems ............................................. 93
Restart network
Setting ......................................................................... 93
Retrace
LF frequency sweep ................................................. 185
RF frequency sweep ................................................. 162
RF level sweep ......................................................... 167
Reverse power protection ............................................... 147
Revisions ...........................................................................82
RF block ............................................................................ 49
RF frequency
Multiplier ................................................................... 124
Settings ..................................................................... 123
RF Frequency
Set frequency (dialog) ............................................... 123
RF frequency sweep
Retrace ..................................................................... 162
RF frequency vs. RF output frequency ........................... 122
RF level
Mode ......................................................................... 130
RF Level
limit ................................................................... 131, 139
RF level limit
NRP-Z power control ........................................ 131, 139
RF Level Sweep
Retrace ..................................................................... 167
RF OFF ................................................................... 120, 372
RF off state
Reference oscillator .................................................. 128
RF ON ............................................................................. 120
RF ON/OFF key .............................................................. 120
RF output
Power-on state .......................................................... 133
RF Output ........................................................................ 120
RF output level ................................................................ 131
RF output state ................................................................121
RF signal
Frequency ................................................................. 121
Frequency dialog ...................................................... 123
Frequency offset ....................................................... 124
Multiplier ................................................................... 124
Offset ........................................................................ 124
Phase ........................................................................ 125
Phase adjustment ..................................................... 125
Set frequency (status bar) ........................................ 122
User variation ............................................................ 124
RF State .......................................................................... 120
RF sweep
Step lin ...................................................................... 162
Step log ..................................................................... 162
Step width ................................................................. 162
RFSweep ........................................................................ 374
Rotary knob ....................................................................... 20
395
R&S®SMC100A
RS232
Baud rate .................................................................... 96
Parity ........................................................................... 96
Serial interface ............................................................ 95
Stop bits ...................................................................... 96
Run Update ....................................................................... 86
S
Safety instructions ............................................................. 13
SAMBA/SMB
How to ....................................................................... 117
Sample-and-Hold mode .................................................. 313
Sample&Hold mode ........................................................ 134
Save immediate .............................................................. 112
Save instrument settings ................................. 112, 237, 264
Save intermediate ........................................................... 237
SCPI
LAN Services ............................................................ 102
Parameters ............................................................... 215
Syntax ....................................................................... 213
Version ...................................................................... 191
SCPI - error messages .................................................... 376
SCPI confirmed commands ............................................ 192
Screen Saver .................................................................... 94
SDC ................................................................................. 198
Search Once - ALC ......................................................... 135
Security
Accept settings ......................................................... 105
Annotation amplitude (setup) .................................... 103
Annotation frequency (setup) .................................... 103
Change password (setup) ......................................... 101
Confirm password (setup) ......................................... 101
Confirm user password (setup) ................................. 101
Display lock (setup) .................................................. 103
New password (setup) .............................................. 101
New user password (setup) ...................................... 101
Old password (setup) ................................................ 101
Security password .................................................... 101
User interface ........................................................... 103
User password .......................................................... 100
Security password
Security ..................................................................... 101
Setup ........................................................................ 101
Security Password
Setup ........................................................................ 105
Security settings
LAN services ............................................................. 101
Security Settings
Security Password .................................................... 105
USB storage ............................................................. 103
User Name ................................................................ 100
Write nonvolatile memory ......................................... 103
Select ASCII Destination
User Correction data ................................................. 144
Select ASCII Source
User Correction data ................................................. 144
Select NRP File ................................................................. 86
Select operation
File menu .................................................................. 112
Select sensor
Power viewer ............................................................ 150
Self-test
Remote ..................................................................... 237
Selftest .............................................................................. 88
Operating Manual 1411.4060.32 ─ 09
Index
Sensor
NRP-Z level control ................................................... 138
NRP-Z power control ................................................ 320
Power viewer ............................................................ 150
Sequential commands ..................................................... 221
Serial bus .......................................................................... 83
Serial interface
RS232 ......................................................................... 95
Serial numbers .................................................................. 82
Service manual ................................................................. 13
Service request (SRQ) ............................................ 227, 229
Service request enable register (SRE) ............................ 227
Remote ..................................................................... 237
Set frequency
RF signal ................................................................... 123
Set IDN and OPT to default
Emulation mode .......................................................... 98
Setting commands .......................................................... 192
Setting not possible ........................................................... 62
Setting parameters ............................................................ 63
Settings
Check front panel ........................................................ 89
Pulse generator ........................................................ 186
Reference oscillator .................................................. 127
Setup
Accept security settings ............................................ 105
Annotation amplitude (security) ................................ 103
Annotation frequency (security) ................................ 103
Change password (security) ..................................... 101
Confirm password (security) ..................................... 101
Confirm password (user) .......................................... 101
Display lock (security) ............................................... 103
Internal adjustments ................................................... 81
LAN services ............................................................. 101
New password (security) .......................................... 101
New password (user) ................................................ 101
Old password (security) ............................................ 101
Old password (user) ................................................. 101
Perfoming the front panel test ..................................... 89
Security password .................................................... 101
User interface (security) ............................................ 103
User password .......................................................... 100
Setup key .......................................................................... 80
Shape
RF Level Sweep ....................................................... 167
Shape - LF Frequency Sweep ........................................ 184
Shape - RF Sweep .......................................................... 161
Show level permanent - Power Sensors ......................... 270
Single Pulse .................................................................... 187
Slope
Pulse trigger input ..................................................... 188
SMB (Samba)
LAN Services ............................................................ 102
Software options ............................................................... 83
Source
FM ............................................................................. 173
Level Sweep Trigger ................................................. 164
LF sweep trigger ....................................................... 181
Power sensors .......................................................... 152
Pulse modulation ...................................................... 179
ɸM ............................................................................ 176
Reference oscillator .................................................. 127
RF frequency sweep trigger ...................................... 157
Source - AM .................................................................... 171
Source - Power Sensors ................................................. 275
Source Import/Export
User Correction data ................................................. 144
396
R&S®SMC100A
Spacing
Level Sweep ............................................................. 168
Spacing - LF Sweep ........................................................ 184
Spacing - RF Sweep ....................................................... 161
Span (RF sweep) ............................................................ 161
SPD ................................................................................. 197
SPE ................................................................................. 197
SRE ................................................................................. 224
SRE (service request enable register) ............................ 227
SRQ ................................................................................ 380
SRQ (service request) ............................................. 227, 229
SSH
LAN Services ............................................................ 102
Standby mode ................................................................... 17
Start
Power Sensors ......................................................... 269
Start Freq ........................................................................ 160
Start Freq - LF sweep ..................................................... 184
Start Level ....................................................................... 167
Start/Stop Display Update ................................................. 87
Startup complete ............................................................. 359
State
Adjustment (reference oscillator) .............................. 128
ALC ........................................................................... 135
LF Output .................................................................. 180
NRP-Z level control ................................................... 138
NRP-Z power control ................................................ 320
Power sensors .......................................................... 150
Pulse modulation ...................................................... 178
ɸM ............................................................................ 176
Video-Sync signal ..................................................... 187
State - User Correction ................................................... 141
Status
Network settings ......................................................... 91
Queries ..................................................................... 230
Status byte
Remote ............................................................. 234, 237
Status byte (STB) ............................................................ 227
Status information ........................................................... 372
Status Information ............................................................. 85
status messages
FREQ OFFSET ......................................................... 372
MOD OFF ................................................................. 372
OVERLOAD .............................................................. 373
RF OFF ..................................................................... 372
Status messages
ALC On ..................................................................... 374
AttFixed ..................................................................... 375
Auto .......................................................................... 374
BUSY ........................................................................ 373
EXT REF ................................................................... 373
LEVEL OFFSET ....................................................... 373
LevelSweep .............................................................. 374
LFSweep .................................................................. 374
LOC-LLO ................................................................. 374
OvenCold .................................................................. 375
REM-LLO ................................................................. 374
REMOTE .................................................................. 374
RFSweep .................................................................. 374
S&H .......................................................................... 374
Table ......................................................................... 374
UCorr ........................................................................ 375
Status registers ............................................................... 224
CONDition ................................................................. 226
ENABle ..................................................................... 226
EVENt ....................................................................... 226
model ........................................................................ 225
Operating Manual 1411.4060.32 ─ 09
Index
NTRansition .............................................................. 226
parts .......................................................................... 225
PTRansition .............................................................. 226
Status reporting system .................................................. 223
Application ................................................................ 229
Common commands ................................................. 234
STB ................................................................................. 224
Step
Level Sweep ............................................................. 168
Step lin
LF sweep .................................................................. 185
RF sweep .................................................................. 162
Step log
LF sweep .................................................................. 185
RF sweep .................................................................. 162
Step width
Frequency ................................................................. 124
Level Sweep ............................................................. 168
LF sweep .................................................................. 185
RF sweep .................................................................. 162
Stop bits
RS232 interface .......................................................... 96
Stop Freq - LF Sweep ..................................................... 184
Stop Freq - RF Sweep .................................................... 161
Stop Level ....................................................................... 167
Storing ............................................................................. 371
String in remote commands ............................................ 217
Subnet mask
Network settings ......................................................... 93
Suffixes ........................................................................... 214
Support ............................................................................379
Sweep
Retrace (LF frequency) ............................................. 185
Retrace (RF frequency) ............................................ 162
Retrace (RF level) ..................................................... 167
RF frequency sweep ................................................. 157
Start Level ................................................................. 167
Stop Level ................................................................. 167
Trigger .............................................................. 160, 166
Sweep - Center frequency .............................................. 161
Sweep - LF start frequency ............................................. 184
Sweep - LF stop frequency ............................................. 184
Sweep - Trigger ............................................................... 183
Sweep shape
RF Level Sweep ....................................................... 167
Sweep shape - LF Frequency Sweep ............................. 184
Sweep shape - RF Sweep .............................................. 161
Sweep spacing
Level Sweep ............................................................. 168
Sweep spacing - RF Sweep ............................................ 161
Syntax elements
SCPI ......................................................................... 218
System
Identification ................................................................ 97
IDN string .................................................................... 98
Language .................................................................... 97
Network Mac address ................................................. 93
Set IDN and OPT to default ........................................ 98
System directory ............................................................. 256
T
Target level
NRP-Z level control ................................................... 139
NRP-Z power control ................................................ 320
Test
Check front panel ........................................................ 89
397
R&S®SMC100A
Text paramters in remote commands ............................. 217
Toggle Summary Screen .................................................. 94
Trigger
Event (remote) .......................................................... 237
Trigger Input Slope .......................................... 163, 169, 186
Trigger mode
Pulse modulation ...................................................... 188
Trigger source
LF sweep .................................................................. 181
RF frequency sweep ................................................. 157
Trigger Source
Level Sweep ............................................................. 164
Triggering sweep manually ............................................. 166
Troubleshooting .............................................................. 372
TS-USB1
USB adapter ............................................................... 95
Type
Power sensors .......................................................... 150
Type - Power Sensors ............................................. 276, 277
U
UCorr ............................................................................... 375
Ultr@VNC ......................................................................... 39
Uninterrupted level setting .............................................. 131
Unit
Power sensors .......................................................... 151
Units
Input ............................................................................ 19
UNIX controller .................................................................. 39
UP ................................................................................... 216
Update sensor ................................................................... 86
USB
Adapter TS-USB1 ....................................................... 95
Interfaces .................................................................. 195
Remote control interface ........................................... 190
USB Storage - Setup ....................................................... 103
Use default aperture time
Power sensors .......................................................... 154
Use peak power
NRP-Z level control ................................................... 139
NRP-Z power control ................................................ 320
Use SParameter
NRP-Z power control ........................................ 139, 155
NRP-Z power viewer ......................................... 139, 155
Use SParameters - Power Sensors ................................ 270
User Correction ............................................................... 140
User Correction Data ...................................................... 141
User interface
Lock (security) .......................................................... 103
User Name - Setup ......................................................... 100
User password
Security ..................................................................... 100
Setup ........................................................................ 100
User variation
RF frequency settings ............................................... 124
Variation active ......................................................... 124
Variation step ............................................................ 125
Index
Video-Sync signal state
Pulse generator ........................................................ 187
VISA ........................................................................ 190, 193
Libraries .................................................................... 191
Resource string ................................................. 191, 193
VISA resource string
Ethernet ...................................................................... 96
GPIB ........................................................................... 96
HISLIP ........................................................................ 96
Serial ........................................................................... 96
Socket ......................................................................... 96
USB ............................................................................ 96
VNC
LAN Services ............................................................ 102
VNC connection ................................................................ 39
VXI protocol .....................................................................194
W
Wait
Remote ..................................................................... 238
Wait Time .......................................................................... 94
Warnings ................................................................... 59, 375
White papers ..................................................................... 14
White space .................................................................... 218
Width
Double pulse ............................................................. 188
Pulse generator ........................................................ 187
Workgroup
Network settings ......................................................... 92
Write nonvolatile memory
Setup ........................................................................ 103
Z
Zero
Power sensors .................................................. 138, 152
Zero - Power Sensors ..................................................... 276
Zeroconf
IP address ................................................................. 378
V
Value - User Correction ................................................... 141
Variation Active ............................................................... 124
Variation step .................................................................. 125
Variation Step ..........................................................124, 133
Vertical stroke ................................................................. 218
Operating Manual 1411.4060.32 ─ 09
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