MDO4000C Series Oscilloscope User Manual

MDO4000C Series Oscilloscope User Manual
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
MDO4000C Series
Mixed Domain Oscilloscope
User Manual
*P077116700*
077-1167-00
MDO4000C Series
Mixed Domain Oscilloscope
User Manual
Warning
The servicing instructions are for use by qualified personnel only. To avoid
personal injury, do not perform any servicing unless you are qualified to do
so. Refer to all safety summaries prior to performing service.
Supports Firmware V1.02 and above
Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are
protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued
and pending. Information in this publication supersedes that in all previously published material. Specifications and price change privileges
reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Table of Contents
Important safety information ................................................................................................................................
General safety summary ...............................................................................................................................
Service safety summary ................................................................................................................................
Terms in the manual .....................................................................................................................................
Terms on the product ....................................................................................................................................
Symbols on the product ................................................................................................................................
Compliance Information .....................................................................................................................................
EMC compliance ..........................................................................................................................................
Safety compliance .......................................................................................................................................
Environmental compliance ...........................................................................................................................
Preface .............................................................................................................................................................
Key features ................................................................................................................................................
Conventions used in this manual ................................................................................................................
Warranty .....................................................................................................................................................
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Installation
Before installation ...........................................................................................................................................
Operating positions ........................................................................................................................................
Connecting probes .........................................................................................................................................
Securing the oscilloscope ............................................................................................................................
Power-On .....................................................................................................................................................
Powering off the oscilloscope .......................................................................................................................
Functional check ..........................................................................................................................................
Compensating a TPP0500B or TPP1000 passive voltage probe ................................................................
Compensating a non-TPP0500B or non-TPP1000 passive voltage probe ..................................................
Application module free trial .........................................................................................................................
Installing an application module ...................................................................................................................
Upgrading bandwidth ...................................................................................................................................
Changing the language of the user interface or keyboard ...........................................................................
Changing the date and time .........................................................................................................................
Signal path compensation for time and frequency domains ........................................................................
Upgrading firmware ......................................................................................................................................
Connecting your oscilloscope to a computer ...............................................................................................
Using VISA .............................................................................................................................................
Using e*Scope ........................................................................................................................................
Using the LXI web page and e*Scope ....................................................................................................
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Using a socket server .............................................................................................................................
Connecting a USB keyboard to your oscilloscope .......................................................................................
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Get acquainted with the instrument
Front-panel menus, controls, and connectors ..............................................................................................
Front panel menus and controls ...................................................................................................................
Using the menu system ..........................................................................................................................
Using the menu buttons .........................................................................................................................
Below the display buttons .......................................................................................................................
Using spectral analysis controls .............................................................................................................
Using other controls ...............................................................................................................................
Identifying items in the time domain display ...........................................................................................
Identifying items in the frequency domain display ..................................................................................
Identifying items in the arbitrary/function generator display ...................................................................
Identifying Items in the digital voltmeter display .....................................................................................
Rear-Panel Connectors ................................................................................................................................
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Acquire the signal
Setting up analog channels ..........................................................................................................................
Labeling channels and buses .......................................................................................................................
Using the default setup ................................................................................................................................
Using autoset ...............................................................................................................................................
Acquisition concepts ....................................................................................................................................
Using FastAcq ..............................................................................................................................................
How the analog acquisition modes work ......................................................................................................
Changing the Acquisition Mode, Record Length, and Delay Time ...............................................................
Using Roll Mode ...........................................................................................................................................
Act on Event .................................................................................................................................................
Setting up a serial or parallel bus .................................................................................................................
Using buses in two steps ........................................................................................................................
Setting up bus parameters .....................................................................................................................
I2C bus ...................................................................................................................................................
SPI bus ...................................................................................................................................................
RS 232 bus .............................................................................................................................................
CAN bus .................................................................................................................................................
LIN bus ...................................................................................................................................................
FlexRay bus ...........................................................................................................................................
Ethernet ..................................................................................................................................................
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Audio bus ...............................................................................................................................................
USB bus .................................................................................................................................................
MIL STD 1553 ........................................................................................................................................
Physical layer bus activity ......................................................................................................................
Labeling channels and buses .................................................................................................................
Setting up digital channels ...........................................................................................................................
When and why to turn on MagniVu ..............................................................................................................
Using MagniVu .............................................................................................................................................
Setting up the RF inputs ...............................................................................................................................
Frequency and span parameters ...........................................................................................................
Reference Level .....................................................................................................................................
Resolution bandwidth .............................................................................................................................
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Trigger setup
Triggering concepts ......................................................................................................................................
Trigger event ..........................................................................................................................................
Trigger modes ........................................................................................................................................
Trigger holdoff ........................................................................................................................................
Trigger coupling ......................................................................................................................................
Horizontal Position .................................................................................................................................
Slope and level .......................................................................................................................................
Choosing a trigger type ................................................................................................................................
Selecting triggers .........................................................................................................................................
Triggering on buses .....................................................................................................................................
Parallel bus trigger .......................................................................................................................................
I2C bus trigger ..............................................................................................................................................
SPI bus trigger .............................................................................................................................................
RS-232 bus trigger .......................................................................................................................................
CAN bus trigger ............................................................................................................................................
LIN bus trigger ..............................................................................................................................................
FlexRay bus trigger ......................................................................................................................................
Audio bus trigger ..........................................................................................................................................
USB bus trigger ............................................................................................................................................
Ethernet bus trigger ......................................................................................................................................
MIL-STD-1553 bus trigger ............................................................................................................................
Data value matching ....................................................................................................................................
Parallel bus trigger data matching ................................................................................................................
Checking trigger settings ..............................................................................................................................
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Using sequence trigger (A (main) and B (delayed)) .....................................................................................
B trigger after delay time ........................................................................................................................
Trigger on B events ................................................................................................................................
Starting and stopping an acquisition ............................................................................................................
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Display waveform or trace data
Adding and removing a waveform
................................................................................................................
Setting the display style and persistence .....................................................................................................
Setting the graticule style .......................................................................................................................
Setting the LCD backlight brightness and dimming settings ..................................................................
Setting waveform intensity ...........................................................................................................................
Scaling and positioning a waveform .............................................................................................................
Setting input parameters ..............................................................................................................................
Positioning and labeling bus signals ............................................................................................................
Positioning, scaling, and grouping digital channels ....................................................................................
Viewing digital channels .............................................................................................................................
Annotating the screen ................................................................................................................................
Viewing the trigger frequency .....................................................................................................................
Displaying the Frequency domain menu ....................................................................................................
Trace types ...........................................................................................................................................
Detection types .....................................................................................................................................
Spectrogram display .............................................................................................................................
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Analyze waveform or trace data
Using markers in the frequency domain .....................................................................................................
Automatic peak markers .......................................................................................................................
Manual markers ....................................................................................................................................
Taking automatic measurements in the time domain .................................................................................
Selecting automatic measurements in the time domain .............................................................................
Customizing an automatic measurement in the time domain ....................................................................
Gating ...................................................................................................................................................
Statistics ...............................................................................................................................................
Snapshot ..............................................................................................................................................
Reference levels ...................................................................................................................................
Taking automatic measurements in the frequency domain ........................................................................
Taking digital voltmeter measurements .....................................................................................................
Taking manual measurements with cursors ...............................................................................................
Using cursor readouts ................................................................................................................................
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Setting up a histogram ...............................................................................................................................
To display a histogram .........................................................................................................................
To add measurements on histogram data ............................................................................................
To reset histogram measurements and statistics .................................................................................
Using math waveforms ...............................................................................................................................
Using FFT ..................................................................................................................................................
Using advanced math ................................................................................................................................
Using spectrum math .................................................................................................................................
Using reference waveforms and traces ......................................................................................................
Using Wave Inspector to manage long record length waveforms ..............................................................
Zooming a waveform ............................................................................................................................
Panning a waveform .............................................................................................................................
Playing and pausing a waveform .........................................................................................................
Searching and marking waveforms ......................................................................................................
Auto-magnify ..............................................................................................................................................
Limit and mask testing ...............................................................................................................................
Create or select the mask ....................................................................................................................
Set up the test ......................................................................................................................................
Run the test and view the results .........................................................................................................
Making video tests .....................................................................................................................................
Taking automated power measurements ...................................................................................................
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Save and recall information
External file structure .................................................................................................................................
Naming your file .........................................................................................................................................
Editing file directory reference waveform or instrument setup names .......................................................
Saving a screen image ...............................................................................................................................
Saving and recalling waveform and trace data ..........................................................................................
Saving a waveform to file .....................................................................................................................
Saving a waveform or trace to reference memory ...............................................................................
Displaying a reference waveform .........................................................................................................
Removing a reference waveform from the display ...............................................................................
Saving and recalling setups .......................................................................................................................
Saving with one button push ......................................................................................................................
Managing drives directories and files .........................................................................................................
Mounting a network drive ...........................................................................................................................
Printing a hard copy ...................................................................................................................................
Connect a printer to your oscilloscope .................................................................................................
Set up print parameters ........................................................................................................................
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Printing to a pictbridge printer ..............................................................................................................
Printing over ethernet ...........................................................................................................................
E mail printing .......................................................................................................................................
Printing with one button push ...............................................................................................................
Using oscilloscope security features ..........................................................................................................
Erasing oscilloscope memory ...............................................................................................................
Using TekSecure without the MDO4SEC option installed ....................................................................
Using TekSecure with the MDO4SEC option installed .........................................................................
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Arbitrary/Function Generator
How to access the AFG
.............................................................................................................................
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Using application modules
Using application modules
.........................................................................................................................
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Appendix A: MDO4000C Series specifications
...................................................................................................................................................................
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Appendix B: TPP0500B and TPP1000 500 MHz and 1 GHz 10X
passive probes information
Operating information .................................................................................................................................
Connecting the probe to the oscilloscope ..................................................................................................
Compensating the probe with the MDO4000C series oscilloscope ...........................................................
Standard accessories .................................................................................................................................
Optional accessories ..................................................................................................................................
Replacing the probe tip ..............................................................................................................................
Specifications .............................................................................................................................................
Performance graphs .............................................................................................................................
Safety summary .........................................................................................................................................
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Appendix C: P6616 general-purpose logic probe information
Product description ....................................................................................................................................
Connecting the probe to the oscilloscope ..................................................................................................
Connecting the probe to your circuit ..........................................................................................................
Functional check ........................................................................................................................................
Typical application ......................................................................................................................................
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Accessories ................................................................................................................................................
Specifications .............................................................................................................................................
Safety summary .........................................................................................................................................
Connect and disconnect properly .........................................................................................................
Observe all terminal ratings ..................................................................................................................
Do not operate without covers ..............................................................................................................
Avoid exposed circuitry ........................................................................................................................
Do not operate with suspected failures ................................................................................................
Do not operate in wet or damp conditions ............................................................................................
Keep product surfaces clean and dry ...................................................................................................
Safety terms and symbols in this manual. ............................................................................................
Symbols on the product .............................................................................................................................
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MDO4000C Series Oscilloscope User Manual
Important safety information
This manual contains information and warnings that must be followed by the user for safe operation and to keep the product in a
safe condition.
To safely perform service on this product, see the Service safety summary that follows the General safety summary.
General safety summary
Use the product only as specified. Review the following safety precautions to avoid injury and prevent damage to this product or
any products connected to it. Carefully read all instructions. Retain these instructions for future reference.
Comply with local and national safety codes.
For correct and safe operation of the product, it is essential that you follow generally accepted safety procedures in addition to
the safety precautions specified in this manual.
The product is designed to be used by trained personnel only.
Only qualified personnel who are aware of the hazards involved should remove the cover for repair, maintenance, or adjustment.
Before use, always check the product with a known source to be sure it is operating correctly.
This product is not intended for detection of hazardous voltages.
Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.
While using this product, you may need to access other parts of a larger system. Read the safety sections of the other
component manuals for warnings and cautions related to operating the system.
When incorporating this equipment into a system, the safety of that system is the responsibility of the assembler of the system.
To avoid fire or personal injury
Use proper power cord. Use only the power cord specified for this product and certified for the country of use. Do not use the
provided power cord for other products.
Ground the product. This product is grounded through the grounding conductor of the power cord. To avoid electric shock, the
grounding conductor must be connected to earth ground. Before making connections to the input or output terminals of the
product, ensure that the product is properly grounded. Do not disable the power cord grounding connection.
Power disconnect. The power cord disconnects the product from the power source. See instructions for the location. Do not
position the equipment so that it is difficult to operate the power cord; it must remain accessible to the user at all times to allow for
quick disconnection if needed.
Connect and disconnect properly. Do not connect or disconnect probes or test leads while they are connected to a voltage
source. Use only insulated voltage probes, test leads, and adapters supplied with the product, or indicated by Tektronix to be
suitable for the product.
Observe all terminal ratings. To avoid fire or shock hazard, observe all rating and markings on the product. Consult the product
manual for further ratings information before making connections to the product. Do not exceed the Measurement Category
MDO4000C Series Oscilloscope User Manual
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Important safety information
(CAT) rating and voltage or current rating of the lowest rated individual component of a product, probe, or accessory. Use caution
when using 1:1 test leads because the probe tip voltage is directly transmitted to the product.
Observe all terminal ratings. To avoid fire or shock hazard, observe all rating and markings on the product. Consult the product
manual for further ratings information before making connections to the product.
Do not apply a potential to any terminal, including the common terminal, that exceeds the maximum rating of that terminal.
Do not float the common terminal above the rated voltage for that terminal.
Do not operate without covers. Do not operate this product with covers or panels removed, or with the case open. Hazardous
voltage exposure is possible.
Avoid exposed circuitry. Do not touch exposed connections and components when power is present.
Do not operate with suspected failures. If you suspect that there is damage to this product, have it inspected by qualified
service personnel.
Disable the product if it is damaged. Do not use the product if it is damaged or operates incorrectly. If in doubt about safety of the
product, turn it off and disconnect the power cord. Clearly mark the product to prevent its further operation.
Before use, inspect voltage probes, test leads, and accessories for mechanical damage and replace when damaged. Do not use
probes or test leads if they are damaged, if there is exposed metal, or if a wear indicator shows.
Examine the exterior of the product before you use it. Look for cracks or missing pieces.
Use only specified replacement parts.
Use proper fuse. Use only the fuse type and rating specified for this product.
Wear eye protection. Wear eye protection if exposure to high-intensity rays or laser radiation exists.
Do not operate in wet/damp conditions. Be aware that condensation may occur if a unit is moved from a cold to a warm
environment.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry. Remove the input signals before you clean the product.
Provide proper ventilation. Refer to the manual's installation instructions for details on installing the product so it has proper
ventilation.
Slots and openings are provided for ventilation and should never be covered or otherwise obstructed. Do not push objects into
any of the openings.
Provide a safe working environment. Always place the product in a location convenient for viewing the display and indicators.
Avoid improper or prolonged use of keyboards, pointers, and button pads. Improper or prolonged keyboard or pointer use may
result in serious injury.
Be sure your work area meets applicable ergonomic standards. Consult with an ergonomics professional to avoid stress injuries.
Use care when lifting and carrying the product. This product is provided with handles for lifting and carrying.
Use only the Tektronix rackmount hardware specified for this product.
Probes and test leads
Before connecting probes or test leads, connect the power cord from the power connector to a properly grounded power outlet.
Keep fingers behind the finger guards on the probes.
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MDO4000C Series Oscilloscope User Manual
Important safety information
Remove all probes, test leads and accessories that are not in use.
Use only correct Measurement Category (CAT), voltage, temperature, altitude, and amperage rated probes, test leads, and
adapters for any measurement.
Beware of high voltages. Understand the voltage ratings for the probe you are using and do not exceed those ratings. Two
ratings are important to know and understand:
■
The maximum measurement voltage from the probe tip to the probe reference lead.
■
The maximum floating voltage from the probe reference lead to earth ground.
These two voltage ratings depend on the probe and your application. Refer to the Specifications section of the manual for more
information.
WARNING. To prevent electrical shock, do not exceed the maximum measurement or maximum floating voltage for the
oscilloscope input BNC connector, probe tip, or probe reference lead.
Connect and disconnect properly. Connect the probe output to the measurement product before connecting the probe to the
circuit under test. Connect the probe reference lead to the circuit under test before connecting the probe input. Disconnect the
probe input and the probe reference lead from the circuit under test before disconnecting the probe from the measurement
product.
Connect and disconnect properly. De-energize the circuit under test before connecting or disconnecting the current probe.
Connect the probe reference lead to earth ground only.
Do not connect a current probe to any wire that carries voltages above the current probe voltage rating.
Inspect the probe and accessories. Before each use, inspect probe and accessories for damage (cuts, tears, or defects in the
probe body, accessories, or cable jacket). Do not use if damaged.
Ground-referenced oscilloscope use. Do not float the reference lead of this probe when using with ground-referenced
oscilloscopes. The reference lead must be connected to earth potential (0 V).
Service safety summary
The Service safety summary section contains additional information required to safely perform service on the product. Only
qualified personnel should perform service procedures. Read this Service safety summary and the General safety summary
before performing any service procedures.
MDO4000C Series Oscilloscope User Manual
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Important safety information
To avoid electric shock. Do not touch exposed connections.
Do not service alone. Do not perform internal service or adjustments of this product unless another person capable of rendering
first aid and resuscitation is present.
Disconnect power. To avoid electric shock, switch off the product power and disconnect the power cord from the mains power
before removing any covers or panels, or opening the case for servicing.
Use care when servicing with power on. Dangerous voltages or currents may exist in this product. Disconnect power, remove
battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components.
Verify safety after repair. Always recheck ground continuity and mains dielectric strength after performing a repair.
Terms in the manual
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.
Terms on the product
These terms may appear on the product:
■
DANGER indicates an injury hazard immediately accessible as you read the marking.
■
WARNING indicates an injury hazard not immediately accessible as you read the marking.
■
CAUTION indicates a hazard to property including the product.
Symbols on the product
When this symbol is marked on the product, be sure to consult the manual to find out the nature of the potential
hazards and any actions which have to be taken to avoid them. (This symbol may also be used to refer the user to
ratings in the manual.)
The following symbols may appear on the product:
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MDO4000C Series Oscilloscope User Manual
Compliance Information
This section lists the EMC (electromagnetic compliance), safety, and environmental standards with which the instrument
complies.
EMC compliance
EC Declaration of Conformity – EMC
Meets intent of Directive 2004/108/EC for Electromagnetic Compatibility. Compliance was demonstrated to the following
specifications as listed in the Official Journal of the European Communities:
EN 61326-1, EN 61326-2-1. EMC requirements for electrical equipment for measurement, control, and laboratory use.
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2
3
4
5
6
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CISPR 11. Radiated and conducted emissions, Group 1, Class A
■
IEC 61000-4-2. Electrostatic discharge immunity
■
IEC 61000-4-3. RF electromagnetic field immunity
■
IEC 61000-4-4. Electrical fast transient / burst immunity
■
IEC 61000-4-5. Power line surge immunity
■
IEC 61000-4-6. Conducted RF immunity
1234
5
6
This product is intended for use in nonresidential areas only. Use in residential areas may cause electromagnetic interference.
Emissions which exceed the levels required by this standard may occur when this equipment is connected to a test object.
Equipment may not meet the immunity requirements of applicable listed standards when test leads and/or test probes are connected due to coupling of electromagnetic
interference onto those leads/probes. To minimize the influence of electromagnetic interference, minimize the loop area between the unshielded portions of signal and
associated return leads, and keep leads as far away as possible from electromagnetic disturbance sources. Twisting unshielded test leads together is an effective way to
reduce loop area. For probes, keep the ground return lead as short as possible and close to the probe body. Some probes have accessory probe tip adapters to
accomplish this most effectively. In all cases, observe all safety instructions for the probes or leads used.
For compliance with the EMC standards listed here, high quality shielded interface cables should be used.
≤ 4.0 division waveform displacement or ≤ 8.0 division increase in peak-to-peak noise.
Residual spurious signals in the RF section can typically increase to -65 dBm when the instrument is subjected to electromagnetic interference per the IEC
61000-4-3 test for frequencies up to 1 GHz, and to -45 dBm for frequencies above 1GHz.
≤ 4.0 division waveform displacement or ≤ 8.0 division increase in peak-to-peak noise.
Residual spurious signals in the RF section can typically increase to -80 dBm when the instrument is subjected to electromagnetic interference per the IEC
61000-4-6 test.
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Compliance Information
■
IEC 61000-4-8. Power frequency magnetic field immunity test
■
IEC 61000-4-11. Voltage dips and interruptions immunity
EN 61000-3-2. AC power line harmonic emissions
EN 61000-3-3. Voltage changes, fluctuations, and flicker
Australia / New Zealand Declaration of Conformity – EMC
Complies with the EMC provision of the Radiocommunications Act per the following standard, in accordance with ACMA:
■
CISPR 11. Radiated and conducted emissions, Group 1, Class A, in accordance with EN 61326-1 and EN 61326-2-1.
Russian federation
This product is approved by the Russian government to carry the GOST mark.
Safety compliance
This section lists the safety standards with which the product complies and other safety compliance information.
EU declaration of conformity – low voltage
Compliance was demonstrated to the following specification as listed in the Official Journal of the European Union:
Low Voltage Directive 2006/95/EC.
■
EN 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General
Requirements.
■
EN 61010-2-030. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part
2-030: Particular requirements for testing and measuring circuits.
U.S. nationally recognized testing laboratory listing
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■
UL 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General
Requirements.
■
UL 61010-2-030. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part
2-030: Particular requirements for testing and measuring circuits.
MDO4000C Series Oscilloscope User Manual
Compliance Information
Canadian certification
■
CAN/CSA-C22.2 No. 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use
– Part 1: General Requirements.
■
CAN/CSA-C22.2 No. 61010-2-030. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory
Use – Part 2-030: Particular requirements for testing and measuring circuits.
Additional compliances
■
IEC 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1:
General Requirements.
■
IEC 61010-2-030. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part
2-030: Particular requirements for testing and measuring circuits.
Equipment type
Test and measuring equipment.
Safety class
Class 1 – grounded product.
Pollution degree description
A measure of the contaminants that could occur in the environment around and within a product. Typically the internal
environment inside a product is considered to be the same as the external. Products should be used only in the environment for
which they are rated.
■
Pollution Degree 1. No pollution or only dry, nonconductive pollution occurs. Products in this category are generally
encapsulated, hermetically sealed, or located in clean rooms.
■
Pollution Degree 2. Normally only dry, nonconductive pollution occurs. Occasionally a temporary conductivity that is caused
by condensation must be expected. This location is a typical office/home environment. Temporary condensation occurs only
when the product is out of service.
■
Pollution Degree 3. Conductive pollution, or dry, nonconductive pollution that becomes conductive due to condensation.
These are sheltered locations where neither temperature nor humidity is controlled. The area is protected from direct
sunshine, rain, or direct wind.
■
Pollution Degree 4. Pollution that generates persistent conductivity through conductive dust, rain, or snow. Typical outdoor
locations.
Pollution degree
Pollution Degree 2 (as defined in IEC 61010-1). Note: Rated for indoor, dry location use only.
IP rating
IP20 (as defined in IEC 60529).
Measurement and overvoltage category descriptions
Measurement terminals on this product may be rated for measuring mains voltages from one or more of the following categories
(see specific ratings marked on the product and in the manual).
■
Measurement Category II. For measurements performed on circuits directly connected to the low-voltage installation.
■
Measurement Category III. For measurements performed in the building installation.
■
Measurement Category IV. For measurements performed at the source of low-voltage installation.
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Compliance Information
NOTE. Only mains power supply circuits have an overvoltage category rating. Only measurement circuits have a measurement
category rating. Other circuits within the product do not have either rating.
Mains overvoltage category rating
Overvoltage Category II (as defined in IEC 61010-1)
Environmental compliance
This section provides information about the environmental impact of the product.
Product end-of-life handling
Observe the following guidelines when recycling an instrument or component:
Equipment recycling. Production of this equipment required the extraction and use of natural resources. The equipment may
contain substances that could be harmful to the environment or human health if improperly handled at the product’s end of life.
To avoid release of such substances into the environment and to reduce the use of natural resources, we encourage you to
recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately.
This symbol indicates that this product complies with the applicable European Union requirements according to
Directives 2012/19/EU and 2006/66/EC on waste electrical and electronic equipment (WEEE) and batteries.
Perchlorate materials. This product contains one or more type CR lithium batteries. According to the state of California, CR
lithium batteries are classified as perchlorate materials and require special handling.
xvi
MDO4000C Series Oscilloscope User Manual
Preface
This manual provides operating information the following oscilloscopes:
MDO4024C
MDO4034C
MDO4054C
MDO4104C
Key features
MDO4000C Mixed Domain Oscilloscopes include up to six built-in instruments, each with exceptional performance to address
tough challenges. Every oscilloscope features powerful triggering, search and analysis, and these are the only scopes to offer
synchronized analog, digital, and RF signal analysis. The MDO4000C is completely customizable and fully upgradeable.
■
Models are available with bandwidths from 200 MHz to 1 GHz
■
Sample rates of either 2.5 or 5 GS/s on all analog channels depending on the model
■
20 M points record length on all channels
■
>340,000 waveforms/second maximum waveform capture rate
■
A dedicated RF input channel for frequency domain measurements (optional)
■
Time-synchronized acquisition of analog, digital, and RF signals in a single instrument
■
50 MHz arbitrary/function generator (optional)
■
16 digital channels and four analog channels for time domain measurements (optional)
■
Advanced triggering and analysis: I2C, SPI, USB 2.0, CAN, LIN, FlexRay, RS-232, RS-422, RS-485, UART, I2S, Left
Justified (LJ), Right Justified (RJ), TDM, Ethernet, MIL-STD-1553 (with the appropriate application module), and Parallel
(optional)
■
Power analysis, and limit and mask testing application modules (optional)
Conventions used in this manual
The following icons are used throughout this manual.
Sequence Step
Front panel power
Connect power
Network
USB
Warranty
Three-year warranty covering all parts and labor, excluding probes.
MDO4000C Series Oscilloscope User Manual
xvii
Preface
xviii
MDO4000C Series Oscilloscope User Manual
Installation
Before installation
Unpack the oscilloscope and check that you received all items listed as standard accessories. The following pages list
recommended accessories and probes, instrument options, and upgrades.
All products are shipped with a printed Installation and Safety manual that is in English, Japanese, Simplified Chinese, and
French.
Table 1: Standard accessories
Accessory
Description
Tektronix part number
MDO4000C Series Oscilloscopes User
Manual
English (Option L0)
077-1167-XX
French (Option L1)
077-1168-XX
Italian (Option L2)
077-1170-XX
German (Option L3)
077-1169-XX
Spanish (Option L4)
077-1171-XX
Japanese (Option L5)
077-1177-XX
Portuguese (Option L6)
077-1172-XX
Simplified Chinese (Option L7)
077-1174-XX
Traditional Chinese (Option L8)
077-1175-XX
Korean (Option L9)
077-1176-XX
Russian (Option L10)
077-1173-XX
Calibration certificate documenting
traceability to national metrology
institute(s), and ISO9001 quality system
registration.
MDO4000C Series Oscilloscope User Manual
––
1
Installation
Accessory
Description
Tektronix part number
Front Panel Overlay
When selecting a language option, you
will receive two front-panel overlays in the
language selected. Use the overlay that
matches your instrument.
French (Option L1) SA version
Non-SA version
335-3598-XX
335-3608-XX
Italian (Option L2) SA version
Non-SA version
335-3600-XX
335-3610-XX
German (Option L3) SA version
Non-SA version
335-3601-XX
335-3611-XX
Spanish (Option L4) SA version
Non-SA version
335-3602-XX
335-3612-XX
Japanese (Option L5) SA version
Non-SA version
335-3603-XX
335-3613-XX
Portuguese (Option L6) SA version
Non-SA version
335-3604-XX
335-3614-XX
Simplified Chinese (Option L7) SA
version
Non-SA version
335-3605-XX
335-3615-XX
Traditional Chinese (Option L8) SA
version
Non-SA version
335-0306-XX
335-3616-XX
Korean (Option L9) SA version
Non-SA version
335-3607-XX
335-3617-XX
Russian (Option L10) SA version
Non-SA version
335-3599-XX
335-3609-XX
Probes
2
For 200, 350 and 500 MHz models, one TPP0500B
500 MHz, 10X passive probe per channel
For 1 GHz models, one 1 GHz, 10X
passive probe per channel
TPP1000
Adapter, for models with options SA3 or
SA6
N Male to BNC Female
103-0045-00
Front Cover
Hard plastic cover to help protect the
instrument
200-5130-00
Power Cord
North America (Option A0)
161-0348-00
Universal Euro (Option A1)
161-0343-00
United Kingdom (Option A2)
161-0344-00
Australia (Option A3)
161-0346-00
Switzerland (Option A5)
161-0347-00
Japan (Option A6)
161-0342-00
China (Option A10)
161-0341-00
India (Option A11)
161-0349-00
Brazil (Option A12)
161-0356-00
No power cord or AC adapter (Option
A99)
––
MDO4000C Series Oscilloscope User Manual
Installation
Accessory
Description
Tektronix part number
Logic probe, with Option MDO4MSO
One, 16-channel logic probe, with
accessories
P6616
Probe and accessory pouch
Bag to hold probes and related
accessories
016-2030-XX
Accessory
Description
Tektronix part number
Aerospace serial triggering and analysis
application module
This module enables triggering on MIL- DPO4AERO
STD-1553 serial buses. Also, it provides
digital views of the signal, bus views, bus
decoding, search tools, and decode
tables with time stamp information.
Audio serial triggering and analysis
application module
This module enables triggering on I2S,
Left Justified (LJ), Right Justified (RJ),
and TDM audio buses. Also, it provides
digital views of the signal, bus views,
packet decoding, search tools, and
packet decode tables with time stamp
information
Table 2: Optional accessories
DPO4AUDIO
Automotive serial triggering and analysis This module enables triggering on packet DPO4AUTO
application module
level information on CAN and LIN serial
buses. Also, it provides a digital view of
the signal, bus view, packet decoding,
search tools, and a packet decode table
with time stamp information.
FlexRay, CAN, and LIN serial triggering
and analysis application module
This module enables triggering on packet DPO4AUTOMAX
level information in FlexRay, CAN, and
LIN buses. Also, it provides digital views
of the signal, bus views, packet decoding,
search tools, packet decode tables with
time stamp information and eye diagram
analysis software.
Bundle application module
This module enables functionality for
DPO4BND
DPO4AERO, DPO4AUDIO, DPO4AUTO,
DPO4COMP, DPO4EMBD, DPO4ENET,
DPO4LMT, DPO4PWR, DPO4USB, and
DPO4VID
Computer triggering and analysis
application module
This module enables triggering on
DPO4COMP
RS-232, RS-422, RS-485 and UART
serial buses. Also, it provides digital views
of the signal, bus views, packet decoding,
search tools, and packet decode tables
with time stamp information.
MDO4000C Series Oscilloscope User Manual
3
Installation
Accessory
Description
Tektronix part number
Embedded serial triggering and analysis
application module
This module enables triggering on packet DPO4EMBD
level information on I2C and SPI serial
buses. Also, it provides digital views of
the signal, bus views, packet decoding,
search tools, and packet decode tables
with time stamp information.
Ethernet serial triggering and analysis
application module
This module enables triggering on
DPO4ENET
10BASE-T and 100BASE-TX buses. Also,
it provides search tools, bus views, and
decode tables with time stamp
information.
NOTE. ≥350 MHz bandwidth models are
recommended for 100BASE-TX.
Limit and mask test application module
This module supports limit testing and
testing on telecom standard masks or
custom masks.
DPO4LMT
NOTE. ≥350 MHz bandwidth models are
recommended for Telecomm standards
>55 Mb/s. 1 GHz bandwidth models are
recommended for high-speed (HS) USB.
Power analysis application module
This module supports measurements of DPO4PWR
power quality, switching loss, harmonics,
ripple, modulation, safe operating area,
and slew rate (dV/dt and dI/dt).
Universal Serial Bus triggering and
analysis application module
This module enables triggering on packet DPO4USB
level information on USB 2.0 serial buses.
Also, it provides digital views of the
signal, bus views, bus decoding data in
hex, binary, and ASCII, search tools, and
packet decode tables with time stamp
information.
NOTE. 1 GHz bandwidth models are
required for high-speed (HS) USB.
Extended video application module
This module enables triggering on a
DPO4VID
variety of standard HDTV signals, as well
as on custom (non-standard) bilevel and
trilevel video signals with 3 to 4,000 lines.
Advanced RF triggering application
This module enables triggering with RF
module (for instruments with options SA3 power as the source for Pulse Width,
or SA6)
Timeout, Runt, Logic, and Sequence
triggers.
4
MDO4TRIG
NEX-HD2HEADER
Adapter that routes the channels from a NEX-HD2HEADER
Mictor connector to 0.1 inch header pins.
TEK-USB-488 Adapter
GPIB to USB Adapter
TEK-USB-488
MDO4000C Series Oscilloscope User Manual
Installation
Accessory
Description
Tektronix part number
Rackmount kit
Adds rackmount brackets
RMD5000
Soft transit case
Case for carrying instrument
ACD4000B
Hard transit case
Traveling case, which requires use of the HCTEK54
soft transit case (ACD4000B).
MSO4000B, DPO4000B, MDO4000/B/C, Describes commands for remote control
and MDO3000 Series Oscilloscopes
of the oscilloscope.
Programmer Manual
077-0510-XX
MDO4000C Series Oscilloscopes
Describes the oscilloscope specifications 077-1178-XX
Specifications and Performance
and performance verification procedure.
Verification Technical Reference Manual
MDO4000C Series Oscilloscopes Service Service information on MDO4000C Series 077-1179-XX
Manual
oscilloscopes.
MDO4000C Series Application Module
Installation Instructions
Describes how to install application
modules on your oscilloscope.
071-3253-XX
DPO3PWR and DPO4PWR Power
Measurement Module User Manual
English (Option L0)
071-2631-XX
French (Option L1)
077-0235-XX
Italian (Option L2)
077-0236-XX
German (Option L3)
077-0237-XX
Spanish (Option L4)
077-0238-XX
Japanese (Option L5)
077-0239-XX
Portuguese (Option L6)
077-0240-XX
Simplified Chinese (Option L7)
077-0241-XX
Traditional Chinese (Option L8)
077-0242-XX
Korean (Option L9)
077-0243-XX
Russian (Option L10)
077-0244-XX
MDO4000C Series Oscilloscopes
Describes how to sanitize or remove
Declassification and Security Instructions memory devices from the Tektronix
MDO4000C Series oscilloscopes.
TekVPI Probes
077-1180-00
Visit the Oscilloscope Probe and
Accessory Selector Tool on the Tektronix
website
NOTE. A subset of TekVPI probes can be
used on the RF input as well. These
probes require the use of the TPA-N-VPI
adapter listed below.
TPA-N-VPI adapter
Adapter from N connection (RF input) to
TekVPI probe.
TPA-N-VPI
TPA-BNC adapter
TekVPI to TekProbe II BNC Adapter
TPA-BNC
MDO4000C Series Oscilloscope User Manual
5
Installation
6
MDO4000C Series Oscilloscope User Manual
Installation
Operating positions
Use the handle and front flip feet to place the oscilloscope in a convenient operating position. When the feet are extended,
always have the handle in a down position.
MDO4000C Series Oscilloscope User Manual
7
Installation
Connecting probes
The oscilloscope supports probes with the following:
1.
Tektronix Versatile Probe Interface
(TekVPI)
These probes support two-way
communication with the oscilloscope
through on-screen menus and remotely
through programmable support. The
remote control is useful in applications
like ATE where you want the system to
preset probe parameters.
2.
Tektronix Versatile Probe Interface
(TekVPI) for Passive Probes
These probes build upon the functionality
of the TekVPI interface. Each probe is
matched with its corresponding
oscilloscope channel, allowing the
oscilloscope to optimize the signal input
path. This provides AC compensation
across the frequency band.
3.
TPA-BNC Adapter
The TPA-BNC Adapter allows you to use
TEKPROBE II probe capabilities, such as
providing probe power, and passing
scaling and unit information to the
oscilloscope.
8
MDO4000C Series Oscilloscope User Manual
Installation
4.
BNC Interfaces
Some of these use TEKPROBE
capabilities to pass the waveform signal
and scaling to the oscilloscope. Some
only pass the signal and there is no other
communication.
5.
Logic Probe Interface
The P6616 probe provides 16 channels
of digital (on or off state) information.
6.
The TPA-N-VPI Adapter allows you to
use TekVPI probes in the RF input.
For more information on the many probes available for use with MDO4000C Series oscilloscopes, visit the Oscilloscope Probe
and Accessory Selector Tool on the Tektronix website
MDO4000C Series Oscilloscope User Manual
9
Installation
Securing the oscilloscope
1.
Use a standard laptop computer style
security lock to secure your oscilloscope
to your location.
Power-On
1.
Connect the supplied power cord to the rear-panel power connector.
2.
Push the power button on the instrument front-panel and the instrument will turn on.
NOTE. The Standby button on the front-panel does not disconnect mains power. Only the power cord at the rear of the product
can disconnect mains power.
10
MDO4000C Series Oscilloscope User Manual
Installation
Powering off the oscilloscope
To power off the oscilloscope, push the power button on the front of the oscilloscope.
To de-energize the instrument, cycle the power button on the instrument front panel to off, and then remove the power cord.
MDO4000C Series Oscilloscope User Manual
11
Installation
Functional check
Perform this quick functional check to verify that your oscilloscope is operating correctly.
12
1.
Connect the oscilloscope power cable.
2.
Power on the oscilloscope.
3.
Connect the probe connector to
oscilloscope channel 1 and the probe tip
and reference lead to the PROBE COMP
terminals on the right side of the
oscilloscope front panel.
4.
Push Default Setup.
MDO4000C Series Oscilloscope User Manual
Installation
5.
Push Autoset. The screen should now
display a square wave, approximately
2.5 V at 1 kHz.
If the signal appears but is misshapen,
perform the procedures for compensating
the probe.
If no signal appears, rerun the procedure.
If this does not remedy the situation, have
the instrument serviced by qualified
service personnel.
MDO4000C Series Oscilloscope User Manual
13
Installation
Compensating a TPP0500B or TPP1000 passive voltage probe
Your Tektronix oscilloscope can automatically compensate TPP0500B and TPP1000 probes. This eliminates the need for
manual probe compensation, as is typically performed with other probes.
Each compensation generates values for a specific probe and channel combination. If you want to use the probe on another
channel and desire to compensate the new probe-channel pair, you must run a new set of compensation steps for that new
combination.
1.
Connect the oscilloscope power cable.
2.
Connect the oscilloscope power cable.
3.
Connect the probe connector to the oscilloscope channel, and the probe tip and reference lead to the PROBE COMP
terminals on the oscilloscope front panel.
NOTE. Connect only one probe at a time to the probe comp terminals.
4.
Push a front panel button for an input
channel connected to the probe you wish
to compensate. (1, 2, 3, or 4)
5.
Notice on the lower menu that the
oscilloscope has automatically set the
probe termination value.
6.
Push More repeatedly to select Probe
Setup from the resulting pop-up menu.
Coupling DC | Termination set
AC
by TPP1000
5
Invert
On | Off
Bandwidth Full
Label
More
6
TPP1000 Probe
Setup
SN:
000001 Atten:
10X
7.
Notice that the compensation status
starts as Default.
8.
Push Compensate probe and follow the
instructions that appear on the display.
Compensation
Status
Default
Compensate
probe for 1
7
8
Measure
Current
Yes | No
14
MDO4000C Series Oscilloscope User Manual
Installation
When compensating TPP0500B/TPP1000 probes on the oscilloscope:
■
Each compensation generates values for a specific probe and channel combination. If you want to use the probe on another
channel and desire to compensate the new probe-channel pair, you must run a new set of compensation steps.
■
Each channel can store compensation values for 10 individual probes. If you try to compensate an 11th probe on a channel,
the oscilloscope will delete the values for the least recently used probe and add the values for the new probe.
■
The oscilloscope will assign default compensation values to a TPP0500B or TPP1000 probe connected to the Aux In
channel.
NOTE. A factory calibration will delete all stored compensation values
NOTE. A probe compensation failure is most likely due to intermittent connection of the probe tip or ground connection during the
probe compensation operation. If a failure occurs, the oscilloscope will re-use the old probe compensation values, if they existed
prior to the failed probe compensation operation.
MDO4000C Series Oscilloscope User Manual
15
Installation
Compensating a non-TPP0500B or non-TPP1000 passive voltage probe
Whenever you attach a passive voltage probe for the first time to any input channel, compensate the probe to match it to the
corresponding oscilloscope input channel.
If you are interested in using the automatic probe compensation procedure described above for the TPP0500B and TPP1000
probes See GUID-C0DD4580-7DCF-46A8-81FC-738AEA7742D1#GUID-C0DD4580-7DCF-46A8-81FC-738AEA7742D1. on a
non-TPP0500B/TPP1000 Tektronix passive probe, check the instruction manual for your probe to see if it qualifies. Otherwise, to
properly compensate your passive probe:
1.
Follow the steps for the functional check.
See Functional check on page 12.
2.
Check the shape of the displayed
waveform to determine if your probe is
properly compensated.
Properly compensated
Under compensated
Over compensated
3.
If necessary, adjust your probe. Repeat
as needed.
Quick Tips
Use the shortest possible ground lead and signal path to minimize probe-induced ringing and distortion on the measured signal.
Signal with a short ground lead
16
Signal with a long ground lead
MDO4000C Series Oscilloscope User Manual
Installation
Application module free trial
A 30-day free trial is available for all application module licenses not installed in your oscilloscope. The trial period begins when
you power on the oscilloscope for the first time.
After 30 days, you must purchase the module if you want to continue using the application. To see the date when your free trial
period expires, push Utility on the front panel, push Utility Page on the lower menu, use multipurpose knob a to select Config,
push About on the lower menu, and then push Application Modules on the side menu to see the expiration date.
Installing an application module
CAUTION. To avoid damage to the oscilloscope or application module, observe ESD (electrostatic discharge) precautions. See
Power-On on page 10.
Turn off the oscilloscope power while removing or adding an application module.
See Powering off the oscilloscope on page 11.
Optional application module packages extend the capability of your oscilloscope.
You can physically install up to four application modules at one time. Application modules go into the two slots with windows in
the upper right corner of the front panel. Two additional slots are directly behind the two that you can see. To use these slots,
install the module with the label facing away from you.
Some of the modules have licenses which allow you to transfer the license between your application modules and the
oscilloscope. You can keep each license in the module, which will allow you to move the module from one instrument to another.
Alternatively, you can move the license from the module to the oscilloscope. This approach will allow you to store the module
separately from the oscilloscope for safe keeping. This approach will also allow you to use more than four applications on your
oscilloscope simultaneously. To transfer a license from a module to your oscilloscope or from your oscilloscope to a module:
1.
Turn off the power to the oscilloscope. Insert the application modules into the oscilloscope. Turn on the power.
2.
Push Utility on the front panel. If needed, push Utility Page on the lower menu and turn multipurpose knob a to select
Config. Push Manage Modules and Options on the lower menu, and then push License Type on the side menu until
“Modules” is selected. The licenses contained in the oscilloscope will be listed in the side menu. Push the button next to the
appropriate license to transfer. You may transfer up to four licenses at one time.
3.
After you turn off the power to the oscilloscope, you can remove the physical application module from the oscilloscope.
Refer to the MDO3000 and MDO4000 Series Application Module Installation Manual that came with your application module for
instructions on installing and testing an application module.
NOTE. If you transfer a license from a module to an oscilloscope, the module will not work on another oscilloscope until you
transfer the license back from the oscilloscope to the module. Consider putting the physical module in an envelope or other
storage with a label recording the date, module name, model and serial number of the oscilloscope which holds the license. This
will help prevent confusion later if someone finds the module, installs it in some other oscilloscope, and wonders why it does not
work.
MDO4000C Series Oscilloscope User Manual
17
Installation
Upgrading bandwidth
You may increase the bandwidth of an instrument when your project requirements demand higher performance. Do this by
purchasing an upgrade.
All upgrades require that you send your instrument to a Tektronix Service Center and require a full calibration.
Model to be upgraded Option SA3 or Option Bandwidth before
SA6 (spectrum
upgrade
analyzer)
Bandwidth after
upgrade
Order product
MDO4024C
200 MHz
350 MHz
MDO4BW2T34
200 MHz
500 MHz
MDO4BW2T54
200 MHz
1 GHz
MDO4BW2T104
350 MHz
500 MHz
MDO4BW3T54
350 MHz
1 GHz
MDO4BW3T104
500 MHz
1 GHz
MDO4BW5T104
350 MHz
500 MHz
MDO4BW3T54
350 MHz
1 GHz
MDO4BW3T104
500 MHz
1 GHz
MDO4BW5T104
MDO4034C
No
MDO4054C
No
500 MHz
1 GHz
MDOBW5T104
MDO4024C
Yes
200 MHz
350 MHz
MDO4BW2T34-SA
200 MHz
500 MHz
MDO4BW2T54-SA
200 MHz
1 GHz
MDO4BW2T104-SA
350 MHz
500 MHz
MDO4BW3T54-SA
350 MHz
1 GHz
MDO4BW3T104-SA
500 MHz
1 GHz
MDO4BW5T104-SA
350 MHz
500 MHz
MDO4BW3T54-SA
350 MHz
1 GHz
MDO4BW3T104-SA
500 MHz
1 GHz
MDO4BW5T104-SA
500 MHz
1 GHz
MDO4BS5T104-SA
MDO4034C
MDO4054C
18
No
Yes
Yes
MDO4000C Series Oscilloscope User Manual
Installation
Changing the language of the user interface or keyboard
To change the language of the oscilloscope user interface or keyboard, and to change the front panel button labels through the
use of an overlay:
1.
Push Utility.
2.
Push Utility Page.
3.
Turn multipurpose knob a and select
Config.
4.
Push Language from the resulting lower
menu.
5.
Push Menus from the resulting side
menu and turn multipurpose knob a to
select the desired language for the user
interface.
6.
Push USB Keyboard from the resulting
side menu and turn multipurpose knob a
to select the desired language version of
keyboard to use.
7.
If you choose to use an English user
interface, be sure that the plastic front
panel overlay is removed.
Language
Menus
(a) English
USB Keyboard
English
5
6
If you choose a language other than
English, place the plastic overlay for the
language that you desire over the front
panel to display labels in that language.
NOTE. If you order a language option, you will receive two front-panel overlays in the language you ordered: One for models with
RF options (options SA3 or SA6) and one with no RF option. Follow the instructions that come with the front-panel overlays.
MDO4000C Series Oscilloscope User Manual
19
Installation
Changing the date and time
To set the internal clock with the current date and time:
20
1.
Push Utility.
2.
Push Utility Page.
3.
Turn multipurpose knob a and select Config.
5.
Push the side menu buttons and turn both multipurpose knobs (a and b) to set the time and date values.
6.
Push OK Set Date & Time.
MDO4000C Series Oscilloscope User Manual
Installation
Signal path compensation for time and frequency domains
Signal Path Compensation (SPC) corrects for DC inaccuracies caused by temperature variations and/or long-term drift. Run the
compensation whenever the ambient temperature has changed by more than 10 °C (18 °F) or once a week if you use vertical
settings of 5 mV/division or less. Failure to do so may result in the instrument not meeting warranted performance levels at those
volts/div settings.
To compensate the signal path:
1.
Warm up the oscilloscope for at least
20 minutes. Remove all input signals
(probes and cables) from channel inputs.
Input signals with AC components
adversely affect SPC.
2.
Push Utility.
3.
Push Utility Page.
4.
Turn multipurpose knob a and select
Calibration.
5.
Push Signal Path on the lower menu.
6.
Utility Page
Calibration
Signal Path
Pass
4
5
Factory
Pass
Push OK Compensate Signal Paths on
the resulting side menu.
The calibration will take approximately
10 minutes to complete.
MDO4000C Series Oscilloscope User Manual
21
Installation
7.
After calibration, verify that the status
indicator on the lower menu displays
Pass. If it does not, then recalibrate the
instrument or have the instrument
serviced by qualified service personnel.
Service personnel use the factory
calibration functions to calibrate the
internal voltage references of the
oscilloscope using external sources.
Contact your Tektronix field office or
representative for assistance with factory
calibration.
Utility Page
Calibration
Signal Path
Pass
Factory
Pass
7
7
NOTE. Signal Path Compensation does not include calibration to the probe tip.
22
MDO4000C Series Oscilloscope User Manual
Installation
Upgrading firmware
To upgrade the firmware of the oscilloscope:
1.
Open up a Web browser and go to the
tektronix website. Proceed to the software
finder. Download the latest firmware for
your oscilloscope on your PC.
Unzip the files and copy the firmware.img file
into the root folder of a USB flash drive or USB
hard drive.
2.
Power off your oscilloscope.
3.
Insert the USB flash or hard drive into the
USB port on the front panel of your
oscilloscope.
4.
Power on the oscilloscope. The
instrument automatically recognizes the
replacement firmware and installs it.
If the instrument does not install the
firmware, rerun the procedure. If the
problem continues, try a different model
of USB flash or hard drive. Finally, if
needed, contact qualified service
personnel.
NOTE. Do not power off the oscilloscope
or remove the USB drive until the
oscilloscope finishes installing the
firmware.
MDO4000C Series Oscilloscope User Manual
23
Installation
5.
Power off the oscilloscope and remove
the USB flash or hard drive.
6.
Power on the oscilloscope.
7.
Push Utility.
8.
Push Utility Page.
9.
Turn multipurpose knob a and select
Config.
10. Push About.
11. Confirm that the version number matches that of the new firmware.
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MDO4000C Series Oscilloscope User Manual
Installation
Connecting your oscilloscope to a computer
Connect your oscilloscope directly to a computer to let the PC analyze your data, collect screen images, or to control your
oscilloscope.
Three ways to connect your oscilloscope to a computer are through the VISA drivers, the e*Scope Web-enabled tools, and a
socket server. Use VISA to communicate with your oscilloscope from your computer through a software application, such as
Tektronix OpenChoice Desktop®. Use e*Scope to communicate with your oscilloscope through a Web browser, such as
Microsoft Internet Explorer. For best results, use a browser that supports html 5.
Using VISA
VISA lets you use your MS-Windows computer to acquire data from your oscilloscope for use in an analysis package that runs on
your PC, such as Microsoft Excel, National Instruments LabVIEW, Tektronix OpenChoice Desktop software, or a program of your
own creation. You can use a common communications connection, such as USB, Ethernet, or GPIB, to connect the computer to
the oscilloscope.
For VISA, load the VISA drivers on your computer. Also, load your application, such as OpenChoice Desktop. You will find the
drivers and OpenChoice Desktop software on the Tektronix website
Using e*Scope
With e*Scope, you can access and control any Internet-connected MDO4000C Series oscilloscope from a web browser on your
computer.
Connect the oscilloscope to your network using the LAN port. The built-in LXI web interface (Core 2011, Version 1.4) provides
network configuration information, which you can edit and customize. It also provides remote instrument control through the
e*Scope user interface. There you can control instrument settings, save screen images, save instrument data or setups, and
much more. Do all this through a password-protectable web-interface.
To set up VISA communication between your oscilloscope and a computer, perform these steps.
1.
Load the VISA drivers on your computer. Also, load your application, such as OpenChoice Desktop.
2.
Connect the oscilloscope to your computer with the appropriate USB or Ethernet cable.
To communicate between the oscilloscope and a GPIB system, connect the oscilloscope to the TEK-USB-488 GPIB-to-USB
Adapter with a USB cable. Then connect the adapter to your GPIB system with a GPIB cable. Cycle the power on the
oscilloscope.
3.
Push Utility.
4.
Push Utility page.
5.
Turn the Multipurpose a and select I/O.
6.
If you are using USB, the system sets itself up automatically for you, if USB is enabled.
Check USB on the lower menu to be sure that USB is enabled. If it is not enabled, push USB. Then push Connect to
Computer on the side menu.
7.
To use Ethernet, push Ethernet & LXI on the lower menu.
Use the side menu buttons to adjust your network settings, as needed. For more information, see the e*Scope setup
information below.
8.
If you want to change socket server parameters, push Socket Server and enter new values through the resulting side
menu.
9.
If you are using GPIB, push GPIB. Enter the GPIB address on the side menu, by turning the Multipurpose a knob.
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Installation
This will set the GPIB address on an attached TEK-USB-488 Adapter.
10. Run your application software on your computer.
TIP.
■
The Tektronix website provides access to a variety of Windows-based software tools for efficient connectivity between your
oscilloscope and your computer. These include tool bars that speed connectivity with Microsoft Excel and Word and a
standalone acquisition program called Tektronix OpenChoice Desktop.
■
The rear-panel USB 2.0 device port is the correct USB port for computer connectivity. Use the rear and front panel USB
2.0 host port to connect your oscilloscope to USB flash drives. Use the USB Device port on the rear panel to connect your
oscilloscope to a PC or a PictBridge printer.
Using the LXI web page and e*Scope
With e*Scope, you can access any Internet-connected MDO4000C oscilloscope from a web browser on your computer or tablet.
To set up e*Scope communications between your oscilloscope and a Web browser running on a remote computer:
1.
Connect the oscilloscope to your computer network with an appropriate Ethernet cable.
2.
Push Utility.
3.
Push Utility Page.
4.
Turn Multipurpose knob and select I/O.
5.
Push Ethernet & LXI.
6.
View the top item on the side menu to determine the condition of the LAN. An indicator turns green for good status and red if
the device detects a fault.
7.
Push LAN Settings to display the network parameters configured on your oscilloscope.
8.
Push LAN Reset to restore the LAN defaults to your oscilloscope.
9.
Push Test Connection to check if your oscilloscope can find an attached network.
10. Push more to see another page of side menu items.
11. Push Change Names to change the name of the oscilloscope, the network domain, or the service name.
12. Push Change Ethernet & LXI Password to change the name of the password.
13. Push Change e*Scope Password to use the LXI password to also protect your oscilloscope from changes made to LAN
settings from a Web browser.
14. Start your browser on your remote computer. In the browser address line, enter the host name, a dot, and the domain name
together. Alternatively, just enter the IP address of the instrument. Either way, you should then see the LXI Welcome page
on your Web browser on your computer screen.
15. Click Network Configuration to view and edit the network configuration settings. If you are using a password and changing
your settings, you need to know that the default user name is “lxiuser”.
16. For e*Scope, click the Instrument Control (e*Scope) link on the left side of the LXI Welcome page. You should then see a
new tab (or window) open in your browser with e*Scope running.
Using a socket server
A socket server provides two-way communication over an Internet Protocol-based computer network. You can use your
oscilloscope’s socket server feature to let your oscilloscope communicate with a remote-terminal device or computer.
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MDO4000C Series Oscilloscope User Manual
Installation
To set up and use a socket server between your oscilloscope and a remote terminal or computer:
1.
Push the Utility button.
2.
Push Utility Page.
3.
Turn Multipurpose a and select I/O.
4.
Push Socket Server.
5.
On the resulting Socket Server side menu, push the top entry to highlight Enabled.
6.
Choose whether the protocol should be None or Terminal.
A communication session run by a human at a keyboard typically uses a terminal protocol. An automated session might
handle its own communications without such protocol from the oscilloscope.
7.
If required, change the port number by turning Multipurpose a.
8.
If required, press OK to set the new port number.
9.
After you have set up the socket server parameters, the computer is now ready to communicate with the oscilloscope. If you
are running an MS Windows PC, you could run its default client Telnet, which has a command interface. One way to do this
is by typing “ Telnet ” in the Run window. The Telnet window will open on the PC.
NOTE. On MS Windows 7, you must first enable Telnet in order for Telnet to work.
10. Start a terminal session between your computer and your oscilloscope by typing in an open command with the
oscilloscope's LAN address and port #.
You can obtain the LAN address by pushing the Ethernet & LXI lower menu button and the resulting LAN Settings side
menu button to view the resulting Ethernet and LXI Settings screen. You can obtain the port # by pushing Socket Server on
the lower menu and viewing Current Port on the side menu.
For example, if the oscilloscope IP address was 123.45.67.89 and the post # was the default of 4000, you could open a
session by writing into the MS Windows Telnet screen: o 123.45.67.89 4000.
The oscilloscope will send a help screen to the computer when it has finished connecting.
11. You can now type in a standard query, such as, *idn?.
The Telnet session window will respond by displaying a character string describing your instrument.
You can type in more queries and view more results using this Telnet session window. You can find the syntax for relevant
commands, queries and related status codes in the Programmer Manual that is available at the Tektronix website.
NOTE. Do not use the computer’s backspace key during an MS Windows Telnet session with the oscilloscope.
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Installation
Connecting a USB keyboard to your oscilloscope
You can connect a USB keyboard to a USB Host port on the rear or front panel of the oscilloscope. The oscilloscope will detect
the keyboard, even if it is plugged in while the oscilloscope is powered on.
You can use the keyboard to quickly create names or labels. You can bring up the Label button on the lower menu by pushing a
Channel or Bus button. Use the arrow keys on the keyboard to move the insertion point, and then type in a name or label.
Labeling channels and buses makes the information on the screen easier to identify.
To choose whether to use a keyboard with a United States (US) key layout or one with an alternative layout:
28
1.
Push Utility.
2.
Push Utility Page.
3.
Turn multipurpose knob a and select Config.
4.
Push Language on the lower menu.
5.
Push USB Keyboard on the side menu.
6.
Turn multipurpose knob a and select the desired keyboard layout style from the resulting menu.
MDO4000C Series Oscilloscope User Manual
Get acquainted with the instrument
Front-panel menus, controls, and connectors
The front panel has buttons and controls for the functions that you use most often. Use the menu buttons to access more
specialized functions.
1.
Traditional oscilloscope front panel controls
2.
10-digit keypad
3.
Application module slots
4.
Ground strap connector
5.
Ground
6.
PROBE COMP
7.
Auxiliary Input (only on instruments without option SA3 or SA6)
8.
Dedicated spectral analysis controls, available with Option SA3 and SA6
9.
Dedicated RF input with N-connector, available with Option SA3 and SA6
10. Analog channel (1, 2, 3, 4) inputs with TekVPI versatile probe interface
11. Digital channel input
12. Display: shows frequency and/or time domain
13. Arbitrary/function generator (AFG) enable button
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Get acquainted with the instrument
Front panel menus and controls
The front panel has buttons and controls for the functions that you use most often. Use the menu buttons to access more
specialized functions.
Using the menu system
To use the menu system:
1.
Push a front panel menu button to display the menu that you want to use.
NOTE. The B1, B2, and B3 buttons support multiple serial or parallel buses.
2.
Push a lower menu button. If a pop-out menu appears, turn Multipurpose a knob to select the desired choice. If a pop-up
menu appears, push the button again to select the desired choice.
3.
Push a side menu button.
If the menu item contains more than one choice, push the side button repeatedly to cycle through the choices.
If a pop-out menu appears, turn Multipurpose a knob to select the desired choice.
4.
30
To remove a side menu, push the lower button again or push Menu Off.
MDO4000C Series Oscilloscope User Manual
Get acquainted with the instrument
5.
Certain menu choices require you to set a numeric value to complete the setup. Use the upper and lower multipurpose
knobs a and b to adjust values. You can also set many numerical values with the 10-digit keypad on the front panel.
6.
Push Fine to turn off or on the ability to make smaller adjustments.
Using the menu buttons
Use the menu buttons to perform many functions in the oscilloscope.
1.
Measure. Push to perform automated measurements on waveforms and to access the digital voltmeter (DVM) and
waveform histogram functions.
2.
Search. Push to perform an automated search through an acquisition for user-defined events/criteria.
3.
Autoset. Push to perform an automatic setup of oscilloscope settings.
4.
Test. Push to activate advanced or application-specific testing features.
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Get acquainted with the instrument
5.
Acquire. Push to set the acquisition mode and adjust the record length.
6.
Trigger Menu. Push to specify trigger settings.
7.
M. Push to manage the math waveform, including the display or removal of the math waveform from the display.
8.
R. Push to manage reference waveforms, including the display or removal of each reference waveform from the display.
9.
B1, B2, or B3. Push to define a serial bus if you have the appropriate modules. Parallel bus support is available on
MDO4000C products with the MDO4MSO option installed. Push the appropriate button to display or remove the
corresponding bus from the display.
10. AFG. Push to enable the arbitrary/function generator output and access the AFG menu.
11. Vertical Position. Turn to adjust the vertical position of the corresponding waveform. Push to center the waveform baseline
indicator.
12. Channel 1, 2, 3 or 4 Menu. Push to set vertical parameters for input waveforms and to display or remove the corresponding
waveform from the display.
13. Vertical Scale. Turn to adjust the vertical scale factor of the corresponding waveform (volts/division). Push to toggle
between Fine and Coarse adjustment.
Below the display buttons
Use the buttons below the display to perform many functions in the oscilloscope.
32
1.
Save / Recall Menu. Push to define the Save button to save and recall setups, waveforms, or screen images to internal
memory, a USB flash drive, or a mounted network drive.
2.
Default Setup. Push to perform an immediate restore of the oscilloscope to the default settings.
MDO4000C Series Oscilloscope User Manual
Get acquainted with the instrument
3.
Utility. Push to activate the system utility functions, such as selecting a language or setting the date/time.
4.
B1, B2, or B3. Push to define and display a bus if you have the appropriate module application keys.
■
DPO4AERO supports MIL-STD-1553 buses.
■
DPO4AUDIO supports I2S, Left Justified (LJ), Right Justified (RJ), and TDM buses.
■
DPO4AUTO supports CAN and LIN buses.
■
DPO4AUTOMAX supports CAN, LIN and FlexRay, including physical layer testing on FlexRay.
■
DPO4BND adds support for DPO4AERO, DPO4AUDIO, DPO4AUTO, DPO4COMP, DPO4EMBD, DPO4ENET,
DPO4USB, DPO4LMT, DPO4PWR, and DPO4VID.
■
DPO4COMP supports RS-232, RS-422, RS-485, and UART buses.
■
DPO4EMBD supports I2C and SPI buses.
■
DPO4ENET supports 100BASE-T and 1000BASE-T buses.
■
DPO4USB supports USB 2.0 buses.
Push the B1, B2, or B3 button to display or remove the corresponding bus from the display.
■
MDO4TRIG supports advanced RF power level triggering.
■
MDO4MSO adds 16 digital channels; includes P6616 digital probe and accessories .
■
MDO4AFG adds the arbitrary/function generator to any MDO4000C Series product.
5.
R. Push to manage reference waveforms and traces, including the display or removal of each reference waveform or trace
from the display.
6.
M. Push to manage the math waveform or trace, including the display or removal of the math waveform or trace from the
display.
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Get acquainted with the instrument
Using spectral analysis controls
These buttons configure the acquisition and display of the RF input.
1.
RF. Push to bring up the frequency domain display and menu. The RF menu provides access to the Spectrogram display.
2.
Freq/Span. Push to specify the portion of the spectrum to view on the display. Set the center frequency and the span – or
set the start and stop frequency.
3.
Ampl. Push to set the reference level.
4.
BW. Push to define the resolution bandwidth.
5.
Markers. Push to set automatic or manual markers.
Using other controls
1.
Cursors. Push once to activate the two vertical cursors. Push again to turn off all cursors. Push and hold to bring up the
cursor menu. Use the menu to select the cursor features, such as type, source, orientation, linked status, and units.
When the cursors are on, you can turn the multipurpose knobs to control their position.
2.
Turn the upper multipurpose knob a, when activated, to move a cursor, to set a numerical parameter value for a menu item,
or to select from a pop-out list of choices. Push the Fine button to toggle between coarse and fine adjustment.
Screen icons tell you when a or b are active.
3.
Select. Push to activate special functions.
For example, when using the two vertical cursors (and no horizontal ones are visible), you can push this button to link or
unlink the cursors. When the two vertical and two horizontal cursors are both visible, you can push this button to make either
the vertical cursors or the horizontal cursors active.
34
4.
Fine. Push to toggle between making coarse and fine adjustments with the many operations of multipurpose knobs a and b.
5.
Turn the lower Multipurpose b knob, when activated, to move a cursor or set a numerical parameter value for a menu item.
Push Fine to make adjustments more slowly.
MDO4000C Series Oscilloscope User Manual
Get acquainted with the instrument
6.
Intensity. Push to enable Multipurpose a to control waveform display intensity and knob b to control graticule intensity.
7.
Zoom button. Push to activate zoom mode.
8.
Pan (outer knob). Turn to scroll the zoom window through the acquired waveform.
9.
Zoom-scale (inner knob). Turn to control the zoom factor. Turning it clockwise zooms in further. Turning it counterclockwise
zooms out.
10. Play-pause button. Push to start or stop the automatic panning of a waveform. Control the speed and direction with the pan
knob.
11. ← Prev. Push to jump to the previous waveform mark.
12. Set/Clear Mark. Push to establish or delete a waveform mark.
13. → Next. Push to jump to the next waveform mark.
14. Horizontal Position. Turn to adjust the trigger point location relative to the acquired waveforms. Push to center when delay
is on. Push to set to 10% when delay is off.
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Get acquainted with the instrument
15. Horizontal Scale. Turn to adjust the horizontal scale (time/division).
16. Autoset. Push to automatically set the vertical, horizontal, and trigger controls for a usable, stable display.
17. Single. Push to make a single sequence acquisition.
18. Run/Stop. Push to start or stop acquisitions.
19. Trigger Level. Turn to adjust the trigger level.
Push Level to Set 50%. Push the Trigger level knob to set the trigger level to the midpoint of the waveform.
20. Force Trig. Push to force an immediate trigger event.
21. Print. Push to print to the selected printer.
22. Power switch. Push to power on or off the oscilloscope.
23. USB 2.0 Host port. Insert a USB peripheral to the oscilloscope, such as a keyboard or a flash drive.
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MDO4000C Series Oscilloscope User Manual
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24. Save. Push to perform an immediate save operation. The save operation uses the current save parameters, as defined in
the Save / Recall menu.
25. Save / Recall Menu. Push to save and recall setups, waveforms, and screen images to internal memory, or a USB flash
drive.
26. Default Setup. Push to perform an immediate restore of the oscilloscope to the default settings.
27. Utility. Push to activate the system utility functions, such as selecting a language or setting the date/time.
28. D15 - D0. Push to display or remove the digital channels from the display, and to access the digital channel setup menu
(with option MDO4MSO only).
29. Menu Off. Push to clear a displayed menu from the screen.
Identifying items in the time domain display
The items shown in the graphic below may appear in the display. Not all of these items are visible at any given time. Some
readouts move outside the graticule area when menus are turned off.
1.
The acquisition readout shows when an acquisition is running, stopped, or when acquisition preview is in effect.
■
Run = acquisitions enabled.
■
Stop = Acquisitions not enabled.
■
Roll = roll mode (40 ms/div or slower).
■
PreVu = The oscilloscope is stopped or between triggers.
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You can change the horizontal or vertical position or scale to see approximately what the next acquisition will look like. A/B =
When using the average acquisition mode, B shows the total number of acquisitions to be averaged (set this using the
Acquisition Mode side menu), and A shows the current progress towards this total number.
2.
The trigger position icon shows the trigger position in the acquisition.
3.
The expansion point icon shows the point that the horizontal scale expands and compresses around. To make the
expansion point the same as the trigger point (as it is here), push Acquire and set the lower menu Delay item to Off.
4.
The waveform record view shows the trigger location relative to the waveform record. The line color corresponds to the
selected waveform color. The brackets show the part of the record currently displayed on the screen.
5.
The trigger status readout shows trigger status. Status conditions are:
6.
38
■
PrTrig: Acquiring pretrigger data.
■
Trig? = Waiting for trigger.
■
Trig’d: Triggered.
■
Auto: Acquiring untriggered data.
The security icon indicates when the I/O ports are disabled.
MDO4000C Series Oscilloscope User Manual
Get acquainted with the instrument
7.
The cursor readout shows time, amplitude, and delta (Δ) values for each cursor. For FFT measurements, it shows frequency
and magnitude. For serial and parallel buses, the readout shows the decoded values.
8.
The trigger level icon shows the trigger level on the waveform. The icon color corresponds to the trigger source color.
9.
The trigger readout shows the trigger source, slope, and level. The trigger readouts for other trigger types show other
parameters.
10. The top line of the record length/sampling rate readout shows the sampling rate. You can adjust it with the Horizontal Scale
knob. The bottom line shows the record length. You can adjust it by pushing Acquire and Record Length on the lower
menu.
11. The horizontal position/scale readout shows on the top line the horizontal scale (adjust with the Horizontal Scale knob).
With Delay Mode on, the bottom line shows the time from the T symbol to the expansion point icon (adjust with the
Horizontal Position knob). Use horizontal position to insert added delay between when the trigger occurs and when you
actually capture the data. Insert a negative time to capture more pre-trigger information. With Delay Mode off, the bottom
line shows the time location of the trigger within the acquisition, as a percentage.
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Get acquainted with the instrument
12. The Timing Resolution readout shows the timing resolution of the digital channels. Timing resolution is the time between
samples. It is the reciprocal of the digital sample rate. When the MagniVu control is on, “MagniVu” appears in the readout.
13. Measurement readouts show the selected measurements. You can select up to four measurements to display at one time. A
symbol
appears instead of the expected numerical measurement if a vertical clipping condition exists. (Part of the
waveform is above or below the display.) To obtain a proper numerical measurement, turn the vertical scale and position
knobs to make all of the waveform appear in the display.
14. The auxiliary waveform readouts show the vertical and horizontal scale factors of the math and reference waveforms.
15. The channel readout shows the channel scale factor (per division), coupling, invert, and bandwidth status. Adjust with the
Vertical Scale knob and in the channel 1, 2, 3, or 4 menus.
16. For digital channels, the baseline indicators point to the high and low levels. The indicator colors follow the color code used
on resistors. The D0 indicator is black, the D1 indicator is brown, the D2 indicator is red, and so on.
17. The group icon indicates when digital channels are grouped.
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MDO4000C Series Oscilloscope User Manual
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18. The bus display shows decoded packet level information for serial buses or for parallel buses. The bus indicator shows the
bus number and bus type.
19. For analog channels, the waveform baseline indicator shows the zero-volt level of a waveform, assuming you have not used
any offset. The icon colors correspond to the waveform colors.
Identifying items in the frequency domain display
Activate the frequency domain display by pressing the front panel RF button.
1.
Vertical graticule labels
2.
Start frequency
3.
Reference level
4.
Vertical scale
5.
Center frequency
6.
Span and resolution bandwidth
7.
Stop frequency
8.
Reference marker
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Identifying items in the arbitrary/function generator display
1.
If visible, the AFG output is on
2.
AFG label
3.
Waveform type, e.g. “Sine”
4.
Additive Noise icon
5.
Frequency
6.
Amplitude
(Refer to Arbitrary / Function Generator.)
Identifying Items in the digital voltmeter display
1.
Measurement type (AC+DC RMS, DC, AC RMS, or Frequency)
2.
Numerical value of the current measurement
3.
Graphic (min, max, value, five-second rolling range)
The number on the left side of the graphic’s linear scale is the minimum value of the range (e.g. 0.000 V).
The number on the right side of the graphic’s linear scale is the maximum value of the range (e.g. 400.0 mV).
The gray bar shows the five second rolling average of measurements.
The inverted triangle shows the location on the scale of the current measurement value.
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MDO4000C Series Oscilloscope User Manual
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4.
Minimum measurement value recorded since you powered on the instrument or since you last pushed the Reset DVM
Statistics menu item.
5.
Maximum measurement value recorded since you powered on the instrument or since you last pushed the Reset DVM
Statistics menu item.
6.
Average of all measurement values recorded since you powered on the instrument or since you last pushed the Reset DVM
Statistics menu item.
7.
Frequency
NOTE. An “Over bandwidth” message appears for voltage measurements ≥ 10 kHz. An “Under bandwidth” message
appears for voltage measurements ≤ 10 Hz. A “?” message appears next to min or max measurements that have gone out
of bounds. Push Reset DVM Statistics to remove the “?” messages from the display.
(Refer to Taking Digital Voltmeter Measurements.).
Rear-Panel Connectors
1.
AFG OUT. Use the AFG OUT port to transmit signals from the arbitrary function generator.
2.
AUX OUT. Use to output Trigger, Signal Out, or AFG Sync Out. Also used to generate a signal on a main trigger pulse, as a
10 MHz reference signal, or to output a signal when other events happen, such as mask-limit test events.
3.
REF IN. Use the 10 MHz external reference input to provide an external timebase.
4.
LAN. Use the LAN (Ethernet) port (RJ-45 connector) to connect the oscilloscope to a 10/100/1000 Base-T local area
network.
5.
Video Out. Use the Video Out port (DB-15 female connector) to show the oscilloscope display on an external monitor or
projector.
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6.
USB 2.0 Device port. Use the USB 2.0 High Speed Device port to connect a PictBridge compatible printer, or for direct PC
control of the oscilloscope using USBTMC protocol.
NOTE. The cable connected from the USB 2.0 Device port to the host computer must meet the USB2.0 specification for
high speed operation when connected to a high speed host controller.
7.
USB 2.0 Host port. Use the USB 2.0 High Speed Host port to connect a USB memory device or USB keyboard.
8.
Power input. Attach to an AC power line with integral safety ground.
9.
Lock. Use to secure the oscilloscope.
10. VESA mounts. Use to secure the oscilloscope.
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MDO4000C Series Oscilloscope User Manual
Acquire the signal
This section describes concepts of and procedures for setting up the oscilloscope to acquire the signal as you want it to.
Setting up analog channels
Use front panel buttons and knobs to set up your instrument to acquire signals using the analog channels.
1.
Connect the TPP0500B, TPP1000, or VPI probe to the input signal source.
2.
Select the input channel by pushing the front panel buttons.
NOTE. If you are using a probe that does not supply probe encoding, set the attenuation (probe factor) in the oscilloscope
vertical menu for the channel to match the probe.
3.
Push Default Setup.
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Acquire the signal
4.
Push Autoset.
5.
Push the desired channel button. Then adjust the vertical position and scale.
6.
Adjust the horizontal position and scale. The horizontal position determines the number of pretrigger and posttrigger
samples.
The horizontal scale determines the size of the acquisition window relative to the waveform. You can scale the window to
contain a waveform edge, a cycle, several cycles, or thousands of cycles.
TIP. Use the zoom feature to see multiple cycles of your signal in the upper part, and a single cycle in the lower part of the
display. (Using Wave Inspector to Manage Long Record Length Waveforms.)
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Acquire the signal
Labeling channels and buses
You can add a label to the channels and buses shown on the display for easy identification. The label is placed on the waveform
baseline indicator in the left side of the screen. The label can have up to 32 characters.
To label a channel, push a channel input button for an analog channel.
1.
Push a front panel button for an input channel or a bus.
2.
Push a lower menu button to create a label, such as for channel 1 or B1.
3.
Push Choose Preset Label to view a list of labels.
4.
Turn Multipurpose b to scroll through the list to find a suitable label. You can edit the label after you insert it if necessary.
5.
Push Insert Preset Label to add the label.
If you are using a USB keyboard, use the arrow keys to position the insertion point and edit the inserted label, or type in a
new label. (Connecting a USB Keyboard to Your Oscilloscope.)
6.
If you do not have a USB keyboard connected, push the side and lower menu arrow keys to position the insertion point.
7.
Turn Multipurpose a to scroll through the list of letters, numbers, and other characters to find the character in the name that
you want to enter.
8.
Push Select or Enter Character to let the oscilloscope know that you have picked the proper character to use.
You can use the lower menu buttons to edit the label as needed.
9.
Continue scrolling and pushing Select until you have entered all the desired characters. For another label, push the side
and lower menu arrow keys to reposition the insertion point.
10. Push Display Labels and select On to see the label.
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Acquire the signal
Using the default setup
To return the oscilloscope to its default settings:
48
1.
Push Default Setup.
2.
If you change your mind, push Undo
Default Setup to undo the last default
setup.
Undo Default
Setup
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Using autoset
Autoset adjusts the instrument (acquisition, horizontal, trigger, and vertical controls) such that it displays four or five waveform
cycles for analog channels with the trigger near the mid level, and ten cycles for digital channels.
Autoset works with both the analog and digital channels.
1.
To autoset an analog channel, connect
the analog probe, and then select the
input channel.
To autoset a digital channel, connect the
logic probe and select the input channel.
Setting up digital channels on page 70.
2.
Push Autoset to execute an Autoset.
3.
If desired, push Undo Autoset to undo
the last Autoset.
Undo Autoset
3
You can also disable the Autoset function. To disable or enable the Autoset function:
1.
Push and hold Autoset.
2.
Push and hold Menu Off.
3.
Release Menu Off, and then release
Autoset.
4.
Select the desired setting (Autoset Enabled or Autoset Disabled) using the side menu.
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Acquire the signal
Quick Tips
■
To position the waveform appropriately, Autoset may change the vertical position. Autoset always sets vertical offset to 0 V.
■
If you use Autoset when no channels are displayed, the instrument turns on channel 1 and scales it.
■
If you use Autoset and the oscilloscope detects a video signal, the oscilloscope automatically sets the trigger type to video
and makes other adjustments to display a stable video signal.
Acquisition concepts
Before a signal can be displayed, it must pass through the input channel where it is scaled and digitized. Each channel has a
dedicated input amplifier and digitizer. Each channel produces a stream of digital data from which the instrument extracts
waveform records.
Sampling Process
Acquisition is the process of sampling an analog signal, converting it into digital data, and assembling it into a waveform record,
which is then stored in acquisition memory.
Real-Time Sampling
MDO4000C Series oscilloscopes use real-time sampling. In real-time sampling, the instrument digitizes all of the points it
acquires using a single trigger event.
Waveform Record
The instrument builds the waveform record through use of the following parameters:
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■
Sample interval: The time between recorded sample points. Adjust this by turning the Horizontal Scale knob or pushing
Acquire and changing the record length in the Acquire menu.
■
Record length: The number of samples required to fill a waveform record. Set this by pushing the Acquire button and
using the lower and side menus.
■
Trigger point: The zero time reference in a waveform record. It is shown on the screen by an orange T.
■
Horizontal position: When Delay Mode is on, this is the time from the trigger point to the expansion point. Adjust this by
turning the Horizontal Position knob.
Use a positive time to acquire the record after the trigger point. Use a negative time to acquire it before the trigger point.
■
Expansion point: The point that the horizontal scale expands and contracts around. It is shown by an orange triangle.
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Acquire the signal
Using FastAcq
FastAcq™ provides high-speed waveform capture. It is helpful in finding elusive signal anomalies. Fast acquisition mode reduces
the dead time between waveform acquisitions, enabling the capture and display of transient events such as glitches and runt
pulses. Fast acquisition mode can also display waveform phenomena at an intensity that reflects their rate of occurrence.
1.
Push Acquire on the front panel.
2.
Push FastAcq on the lower menu.
Mode
Sample
Record Length
10k
FastAcq
Off
Delay
On Off
Set Horiz.
Position to
10%
Waveform
Display
XY Display
Off
2
FastAcq
3.
Toggle FastAcq on the side menu to
Select On.
Fast Acq
On Off
3
Waveform
Palette
a Temperature
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4.
Push Waveform Palette on the side menu
and use the multipurpose knob to select
the desired display palette.
The display palette lets you enhance the visibility of events. This choice uses intensity grading to indicate how often rare
transients occur relative to normal signals. The choices are Temperature, Spectral, Normal and Inverted.
■
Temperature uses color-grading to indicate frequency of occurrence with hot colors like red/yellow indicating frequently
occurring events and colder colors like blue/green indicating rarely occurring events.
■
Spectral uses color-grading to indicate frequency of occurrence with colder colors like blue indicating frequently occurring
events and hot colors like red indicating rarely occurring events.
■
Normal uses the default channel color (like yellow for channel one) along with gray-scale to indicate frequency of
occurrence where frequently occurring events are bright.
■
Inverted uses the default channel color along with gray scale to indicate frequency of occurrence where rarely occurring
events are bright.
These color palettes help highlight the events that over time occur more often or, in the case of infrequent anomalies, occur less
often.
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Acquire the signal
How the analog acquisition modes work
Sample mode retains the first sampled point
from each acquisition interval. Sample is the
default mode.
Peak Detect mode uses the highest and
lowest of all the samples contained in two
consecutive acquisition intervals. This mode
only works with real-time, noninterpolated
sampling and is useful for catching high
frequency glitches.
Hi Res mode calculates the average of all the
samples for each acquisition interval. This
mode also only works with real-time,
noninterpolated sampling. Hi-Res provides a
higher-resolution, lower-bandwidth waveform.
Envelope mode finds the highest and lowest
record points over all acquisitions. Envelope
uses Peak Detect for each individual
acquisition.
Average mode calculates the average value
for each record point over a user-specified
number of acquisitions. Average uses Sample
mode for each individual acquisition. Use
average mode to reduce random noise.
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Changing the Acquisition Mode, Record Length, and Delay Time
Use this procedure to change the acquisition mode.
1.
Push Acquire.
2.
Push Mode.
3.
Then choose the acquisition mode from
the side menu. You can chose from:
Sample, Peak Detect, Hi Res, Envelope,
or Average.
4.
If you chose Average, turn multipurpose
knob a to set the number of waveforms to
average over.
5.
Push Record Length.
MDO4000C Series Oscilloscope User Manual
Mode
Sample
Record Length
10k
2
5
FastAcq
Off
Delay
On Off
Set Horiz.
Position to
10%
Waveform
Display
XY Display
Off
7
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Acquire the signal
6.
Scroll through the available choices.
Choose among 1000, 10k, 100k, 1M, 5M,
10M, and 20M points.
7.
Push Delay on the lower menu to select
On when you want to delay the
acquisition relative to the trigger event.
With Delay set to On, turn the Horizontal Position knob counterclockwise to increase the delay. The trigger point will move to
the left and ultimately outside of the acquired waveform. Then you can adjust the Horizontal Scale knob to acquire more detail
around the area of interest at the center of the screen.
When this delay is on, the trigger point separates from the horizontal expansion point. The horizontal expansion point stays at the
center of the screen. The trigger point can move off the screen. When this happens, the trigger marker turns to point in the
direction of the trigger point.
Use the delay feature when you want to acquire waveform detail that is separated from the trigger event by a significant interval
of time. For example, you can trigger on a sync pulse that occurs once every 10 ms and then look at high-speed signal
characteristics that occur 6 ms after the sync pulse.
When the delay feature is set to Off, the expansion point is tied to the trigger point so that scale changes are centered around the
trigger point.
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Using Roll Mode
Roll mode gives a display similar to a strip chart recorder for low-frequency signals. Roll mode lets you see acquired data points
without waiting for the acquisition of a complete waveform record.
Roll mode is enabled when the trigger mode is auto and the horizontal scale is set to 40 ms/div or slower.
Quick Tips
■
Switching to Envelope or Average
acquisition mode, using digital channels,
using math waveforms, turning on a bus,
or switching to Normal trigger will disable
Roll mode.
■
Roll mode is disabled when you set the
horizontal scale to 20 ms per division or
faster.
■
Push Run/Stop to halt Roll mode.
Act on Event
Have the oscilloscope perform a defined action after a defined event has occurred. The event can be a trigger or a certain
number of acquisitions. The action can be to:
■
Stop acquisitions
■
Save a waveform or a screen image to a file
■
Print
■
Send a pulse out the AUX OUT port
■
Generate a remote interface SRQ
■
Send an e-mail notification
■
Display a message on the oscilloscope display
1.
Push Test on the front panel.
2.
Push Application on the lower menu.
3.
Turn the multipurpose knob to select Act on Event.
4.
Push Event on the lower menu, which will display the Event Type side menu. Select the desired event type.
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5.
Push Actions on the lower menu, which will display the Actions side menu. Use this menu to select a action to occur upon
the event just selected.
6.
Select the action type from the pop-up menu.
7.
Select whether or not to enable the action.
8.
If you selected Email Notification from the list of actions, you can now select Configure E-mail from the side menu to define
the parameters of the email.
NOTE. There is a single set of SMTP server settings saved for both Act on Event e-mail notification and for the e-mail
printer (set through the Utility > Print Setup > Select Printer > Add E-mail Printer menus). If you modify the SMTP settings in
one of these two locations, they will be similarly modified in the other location.
9.
Push Repeat from the lower menu to set how many times you want this event and action pair to repeat.
Setting up a serial or parallel bus
Your oscilloscope can decode and trigger on signal events or conditions that occur on:
Bus type
With this hardware
MIL-STD-1553
DPO4AERO application module
Audio (I2S, Left Justified (LJ), Right Justified (RJ), and TDM)
DPO4AUDIO application module
CAN and LIN
DPO4AUTO application module
CAN, LIN, and FlexRay
DPO4AUTOMAX application module
I2C
DPO4EMBD application module
and SPI
10BASE-T/100BASE-TX Ethernet
DPO4ENET application module
Parallel
MDO4000C Series oscilloscope with the MDO4MSO option
RS-232, RS-422, RS-485, and URT
DPO4COMP application module
USB 2.0
DPO4USB application module
NOTE. 1 GHz bandwidth models are required for high-speed
(HS) USB.
(Application Module Free Trial.)
Using buses in two steps
To quickly use serial bus triggering:
1.
58
Push B1, B2, or B3 and enter parameters of the bus you want to decode.
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You can separately assign a different bus to each of the B1, B2, or B3 buttons.
2.
Push Trigger Menu and enter trigger parameters.
You can display bus information without triggering on the bus signal.
Setting up bus parameters
NOTE. For most bus sources, you may use any combination of channels 1 through 4, and D15 through D0. With some buses,
you may also use Ref 1 through 4 and Math as sources for protocol decode.
To trigger on serial or parallel bus conditions, refer to Triggering on Buses. (Triggering on Buses.)
To set up bus parameters:
1.
Push B1, B2, or B3 to bring up the lower bus menu.
2.
Push Bus. Turn Multipurpose a to scroll through the list of bus types and select the desired bus: Parallel, I2C, SPI, RS-232,
CAN, LIN, FlexRay, Audio, USB, Ethernet, or MIL-STD-1553.
The actual menu items shown will depend on your model oscilloscope and the application modules installed.
3.
Push Define Inputs. The choices depend on the selected bus.
■
Use the side menu buttons to define parameters for the inputs, such as specific signals to an analog or digital channel.
■
If you select Parallel, push the side menu button to enable or disable Clocked Data.
■
Push the side menu button to select the Clock Edge on which to clock data: rising edge, falling edge, or both edges.
■
Turn Multipurpose a to select the Number of Data Bits in the parallel bus.
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4.
■
Turn Multipurpose a to select the desired bit to define.
■
Turn Multipurpose b to select the desired analog or digital channel as the source for the bit.
Push Thresholds.
You can set the threshold for all channels in the parallel or serial bus from a list of preset values. The preset values vary,
depending on the bus type.
Alternatively, you can set the threshold to a specific value for the signals that make up the parallel or serial bus. To do so,
push Select on the side menu and turn Multipurpose a to select a Bit or a Channel number (Signal name).
Then, turn Multipurpose b to define the voltage level above which the oscilloscope treats the signal as a logic high and
below which as a logic low.
NOTE. Some buses use two thresholds per channel.
5.
60
Optionally, push B1 Label to edit the label for the bus. (Labeling Channels and Buses.)
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Acquire the signal
6.
Push Bus Display and use the side menu to define how to display the parallel or serial bus.
7.
Depending on the bus, use the side menu or the knobs to set the number format.
Push Event Table and select On to display a list of bus packets with timestamps.
For a clocked parallel bus, the table lists the value of the bus at each clock edge. For an unclocked parallel bus, the table
lists the value of the bus whenever any one of its bits changes.
8.
The Event Table lists bytes, words, or packets, depending on the bus type.
Push Save Event Table to save the event table data in a .csv (spreadsheet) format on the currently selected storage
device.
This example of an Event Table is from an RS-232 bus.
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Acquire the signal
RS-232 event tables display one line for each 7- or 8-bit byte when Packets are set to Off. RS-232 event tables display one
line for each packet when Packets are set to On.
Other buses display one word, frame, or packet per row, depending on the bus type.
9.
Push B1, B2, or B3 and turn Multipurpose a to move the bus display up or down on the screen.
I2C bus
To acquire data from an I2C bus, you need to also set up these items:
1.
If you select I2C, push Define Inputs and the appropriate side menu choices.
You can assign the predefined SCLK Input or SDA Input to the channel connected to the signal.
2.
Push Include R/W in Address and then push the desired side button.
This control determines how the oscilloscope shows the I2C addresses in bus decode traces, cursor readouts, Event Table
listings, and trigger settings.
If you select Yes, the oscilloscope displays 7-bit addresses as eight bits, where the eighth bit (LSB) is the R/W bit. It
displays 10-bit addresses as 11 bits where the third bit is the R/W bit.
If you select No, the oscilloscope displays 7-bit addresses as seven bits, and 10-bit addresses as ten bits.
In the physical layer of the I2C protocol, 10 bit I2C addresses are preceded by the five bit code, 11110. The oscilloscope
does not include these five bits in address readouts.
SPI bus
To acquire data from an SPI bus, you need to also set up these items:
1.
If you selected SPI, push Define Inputs and the appropriate side menu choices.
You can set the Framing to SS (Slave Select) or to Idle Time.
You can assign the predefined SCLK, SS, MOSI, or MISO signals to any channel.
2.
62
Push Configure and the desired side menu choices.
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3.
Push SCLK to set the edge of the signal to match the SPI bus being acquired.
4.
Set the level of the SS, MOSI, and MISO signals to match the SPI bus.
Active High means that a signal is considered active when the signal is greater than the threshold value.
Active Low means that the signal is considered active when the signal is lower than the threshold value.
5.
Use Multipurpose a to set the number of bits of the SPI Word Size.
6.
Push either side menu button to set the bit order of the SPI bus.
RS 232 bus
To acquire data from a RS-232 bus, you need to also set up these items:
1.
If you selected RS-232, push Configure and the desired side menu choices.
Use the side menu to configure the bus. Use Normal polarity for RS-232 signals and Inverted polarity for RS-422, RS-485,
and UART buses.
2.
Push Bit Rate, and turn Multipurpose a to select the appropriate bit rate.
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3.
Push Data Bits and select the number to match the bus.
4.
Push Parity and turn Multipurpose a to match the polarity used by the bus as None, Odd, or Even.
5.
Push Packets and select On or Off.
6.
Turn Multipurpose a to select an end-of-packet character.
RS-232 decoding displays a stream of bytes. You can organize the stream into packets with an end-of-packet character.
If you defined an end-of-packet character to use for RS-232 decoding, the stream of bytes will be displayed as packets.
When decoding an RS-232 bus in ASCII mode, a large dot indicates that the value represents a character outside the printable
ASCII range.
CAN bus
To acquire data from a CAN bus, you need to also set up these items:
1.
64
If you selected CAN, push Define Inputs and the appropriate side menu choices.
MDO4000C Series Oscilloscope User Manual
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2.
Turn Multipurpose a to select the channel connected to the CAN bus source.
3.
Turn Multipurpose a to select the type of CAN signal: CAN_H, CAN_L, Rx, Tx, or Differential.
4.
Turn Multipurpose a to set the Sample Point from 5% to 95% of the position within the bit period or the unit interval.
5.
Push Bit Rate and turn Multipurpose a to select from the list of predefined bit rates.
Alternatively, you can set the bit rate to a specific value. To do so, select Custom, and then turn Multipurpose b to set the
bit rate from 10,000 to 1,000,000.
LIN bus
To acquire data from a LIN bus, you need to also set up these items:
1.
If you selected LIN, push Define Inputs and the appropriate side menu choices.
2.
Turn Multipurpose a to select the channel connected to the LIN bus source.
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Acquire the signal
3.
Turn Multipurpose a to set the Sample Point from 5% to 95% of the position within the bit period or the unit interval.
4.
Select the Polarity to match the LIN bus being acquired.
5.
Push Configure and the appropriate side menu choices.
6.
Push Bit Rate, and turn Multipurpose a to select from the list of predefined bit rates.
Alternatively, you can set the bit rate to a specific value. To do so, select Custom, and then turn Multipurpose b to set the
bit rate from 800 bps to 100,000 bps.
7.
Push LIN Standard, and turn Multipurpose a to select the appropriate standard.
8.
Push Include Parity Bits with Id to select whether or not to include parity bits.
FlexRay bus
To acquire data from a FlexRay bus, you need to also set up these items:
66
1.
If you selected FlexRay , push Define Inputs and the desired side menu choices.
2.
As appropriate, push the Threshold, Bit Rate, Label, Bus Display and Event Table buttons and set their corresponding
parameter values.
MDO4000C Series Oscilloscope User Manual
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Ethernet
To acquire data from an Ethernet bus, you need to also set up these items:
1.
If you selected Ethernet, push Define
Inputs and the desired side menu
choices.
Bus (B1)
Ethernet
Define Inputs
100BASE-TX
Thresholds
1
2.
The Thresholds, Bus Display, and Event
Table menus operate similarly to the
other serial buses.
3.
Push IPv4 to decide whether or not to
decode and trigger on Internet Protocol
version 4 signals.
IPv4
Yes | No
(B1) Label
Ethernet
Bus Display
Event Table
3
Audio bus
To acquire data from an Audio bus, you need to also set up these items:
1.
If you selected Audio, push Define Inputs and the desired side menu choices.
2.
Push Type, and turn Multipurpose a to select the type of audio bus data configuration on which to trigger.
3.
Select I2S to trigger on the standard Inter-IC Sound, or Integrated Interchip Sound, electrical serial bus interface standard
stereo format.
4.
Select Left Justified to trigger on an I2S stream where there is no bit clock delay and the data starts right on the edge of
the word select clock.
5.
Select Right Justified to trigger on an I2S stream where the data lines up with the right edge of the word select clock.
6.
Select TDM to trigger on time-division multiplexing.
7.
Push Configure, and the appropriate buttons on the side menu to further set up I2S triggering.
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USB bus
To acquire data from a USB bus, you need to also set up these items:
1.
If you selected USB, push Define Inputs to set the USB bus speed and probe type.
2.
The Thresholds, Label, Bus Display, and Event Table menus operate similarly to the other serial buses.
NOTE. 1 GHz bandwidth models are required for high-speed (HS) USB.
MIL STD 1553
To acquire data from a MIL-STD 1553 bus, you need to also set up these items:
1.
Push Define Inputs and turn Multipurpose a to select the desired side menu choices.
Select the polarity desired to match the MIL-STD-1553 bus being acquired.
2.
The Thresholds, Label, Bus Display, and Event Table menu items operate similarly to how they work on other serial bus
menus.
3.
Push RT if you wish to change the Response Time (RT) maximum and minimum default values.
Physical layer bus activity
Oscilloscope waveform traces from analog channels 1 to 4, digital channels D15 to D0, Math waveforms, and the traces you see
when you choose to display a bus always show the physical layer bus activity. In the physical layer display, bits that were
transmitted earlier are to the left, and bits that were transmitted later are to the right.
■
I2C, and CAN buses transmit the MSB (most significant bit) first
■
SPI buses do not specify a bit order
■
RS-232 and LIN buses transmit the LSB (least significant bit) first
NOTE. The oscilloscope displays the decode traces and event tables for all buses with the MSB on the left and LSB on the right.
For example, an RS-232 signal (after the start bit) might be high, high, high, low, high, low, low, and high. Since the
RS-232 protocol uses high for zero and low for one, this value would be 0001 0110.
Since the decode displays the MSB first, the oscilloscope reverses the order of the bits and displays as h.
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Labeling channels and buses
You can add a label to the channels and buses shown on the display for easy identification. The label is placed on the waveform
baseline indicator in the left side of the screen. The label can have up to 32 characters.
To label a channel, push a channel input button for an analog channel.
1.
Push a front panel button for an input channel or a bus.
2.
Push a lower menu button to create a label, such as for channel 1 or B1.
3.
Push Choose Preset Label to view a list of labels.
4.
Turn Multipurpose b to scroll through the list to find a suitable label. You can edit the label after you insert it if necessary.
5.
Push Insert Preset Label to add the label.
If you are using a USB keyboard, use the arrow keys to position the insertion point and edit the inserted label, or type in a
new label. (Connecting a USB Keyboard to Your Oscilloscope.)
6.
If you do not have a USB keyboard connected, push the side and lower menu arrow keys to position the insertion point.
7.
Turn Multipurpose a to scroll through the list of letters, numbers, and other characters to find the character in the name that
you want to enter.
8.
Push Select or Enter Character to let the oscilloscope know that you have picked the proper character to use.
You can use the lower menu buttons to edit the label as needed.
9.
Continue scrolling and pushing Select until you have entered all the desired characters. For another label, push the side
and lower menu arrow keys to reposition the insertion point.
10. Push Display Labels and select On to see the label.
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Setting up digital channels
Use front panel buttons and knobs to set up your instrument to acquire signals using the digital channels.
1.
Connect the P6616 16-channel logic
probe to the input signal source.
2.
Connect the ground lead or leads to the
circuit ground.
You can connect a separate lead for each
channel or a common ground lead for
each group of 8 wires.
70
3.
If needed, connect the appropriate
grabber for each probe to the probe tip.
4.
Connect each probe to the desired circuit
test point.
5.
Push D15 - D0 on the front panel to
display the menu.
6.
Push D15 - D0 on the lower menu to
access the D15 - D0 On or Off menu.
D15 – D0
On/Off
Thresholds
Edit Labels
Monitor On | Off
MagniVu
On | Off
Height
S |ML
6
8
9
10
11
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7.
Turn multipurpose knob a to scroll through the list of digital channels. Turn multipurpose knob b to position the selected
channel.
As you position channels close to each other on the display, the oscilloscope groups the channels, and adds the group to
the pop-up list. You can select the group from the list to move all the channels in the group instead of individual
channels.
8.
Push Thresholds on the lower menu. You can assign a different threshold value to each channel.
9.
Push Edit Labels on the lower menu and create the label. You can create labels through the front panel or with an
optional USB keyboard.
10. Push Monitor to show activity on digital
channels at a glance.
11. Push MagniVu on the lower menu to
increase the timing resolution.
12. Push Height on the lower menu
repeatedly to set the signal height. You
only need to do this once to set the height
for all of the digital channels.
Quick Tips
■
Use the zoom feature to see multiple cycles of the signal in the upper part, and a single cycle in the lower part of the display.
■
When setting up the logic probe, the first set of eight leads (pins 7 to 0) on the logic probe are marked GROUP 1 on the lead
box. The second set (pins 15 to 8) is marked GROUP 2.
■
The lead for the first channel in each group is colored blue for easy identification while you connect the logic probe to the
device under test. The other leads are gray.
■
Digital channels store a high or low state for each sample. The threshold that separates high from low can be set separately
for each channel.
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When and why to turn on MagniVu
Tektronix MagniVu acquisition technology allows you to have higher timing resolution so that you can more accurately determine
edge placement and make more precise timing measurements on digital edges. Using MagniVu, you can see up to 32 times
more detail than you can using normal digital channel sampling.
The MagniVu record is acquired in parallel to the main digital acquisition and is available at any time, running or stopped.
MagniVu provides an ultra high resolution view of your data sampled at a maximum resolution of 60.6 ps for 10,000 points
centered around the trigger.
NOTE. MagniVu centers itself around the trigger point. If you turn MagniVu on while using a large record length and you are
looking somewhere other than the trigger point, then the digital signal may be off screen. In most of these cases, you can find the
digital record by looking for the digital signal in the upper overview and panning accordingly.
NOTE. You should turn on MagniVu when light gray shading is displayed to indicate the uncertainty of the edge position. If the
shading is not displayed, you do not need to use MagniVu. Refer Viewing digital channels on page 102.
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Using MagniVu
1.
Push D15 – D0.
2.
Push MagniVu and select On.
D15 – D0
On/Off
Thresholds
Edit Labels
Monitor On | Off
MagniVu
On | Off
Height
S |ML
2
Quick Tips
■
If you think you need more timing resolution, turn on MagniVu to increase the resolution.
■
MagniVu is always acquired. If the oscilloscope is in a stopped state, you can turn on MagniVu and still get the resolution
without taking another acquisition.
■
The serial bus features do not use data acquired in MagniVu mode.
Setting up the RF inputs
Frequency and span parameters
1.
The center frequency is a precise frequency at the center of the display. In many applications, it is a carrier frequency.
2.
The span is the range of frequencies you can observe around the center frequency.
To define the center frequency and the span:
1.
Push Freq/Span on the front panel.
2.
Push Center Frequency on the side menu and use either the Multipurpose a knob or the oscilloscope keypad to enter the
desired center frequency. If you use the keypad, you can also use the resulting side menu choices to enter units.
3.
Push Span and use either the Multipurpose b knob or the keypad to enter the desired span. If you use the keypad, you
can also use the resulting side menu choices to enter units.
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Acquire the signal
4.
Push Start to set the lowest frequency to capture.
5.
Push Stop to set the highest frequency to capture.
6.
Push
To Center to move the frequency identified by the reference marker to the center frequency.
Reference Level
1.
Push Ampl to bring up the side menu for adjusting RF amplitude settings.
2.
Push Ref Level and turn Multipurpose a to set the approximate maximum power level, as shown by the baseline indicator at
the top of the frequency graticule.
3.
Push Vertical and turn Multipurpose a to adjust the vertical position. You will move the baseline indicator up or down. This is
useful if you want to move signals onto the visible display.
Turn Multipurpose b to adjust the vertical scale.
4.
Push Vertical Units and turn Multipurpose a to define the vertical units of measure for the frequency domain. Choices are:
dBm, dBµW, dBmV, dBµV, dBmA, and dBµA.
This is useful if your application requires a different unit of measurement than that being currently displayed.
5.
Push Auto Level to direct the oscilloscope to automatically calculate and set the reference level for you.
Resolution bandwidth
The resolution bandwidth (RBW) determines the level to which the oscilloscope can resolve individual frequencies in the
frequency domain. For example, if the test signal contains two carriers separated by 1 kHz, you will not be able to discriminate
between them unless the RBW is less than 1 kHz.
The views below both show the same signal. The difference between them is their RBW.
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Acquire the signal
1.
Push BW to bring up the resolution bandwidth side menu. This allows you to set the smallest frequency difference that the
instrument can discern in the frequency axis.
2.
Push RBW Mode to select either Auto or Manual.
Auto sets the resolution bandwidth automatically as you change the span. The default behavior is RBW = Span/1000.
Manual allows you to set your own resolution bandwidth.
3.
To manually adjust the RBW, push RBW and turn Multipurpose a.
4.
Push Span : RBW and turn Multipurpose a to set the span/RBW ratio.
This ratio is used when the RBW Mode is set to Auto. The default is 1000:1 but you can set it to other values in a
1-2-5 sequence (e.g. 1000, 20000, 50000).
5.
Push Window and turn Multipurpose a to choose which FFT window type to use.
The choices are: Kaiser, Rectangular, Hamming, Hanning, Blackman-Harris, or Flat-Top.
The RF bandwidth FFT feature provides six windows. Each offers a trade-off between frequency resolution and magnitude
accuracy. The choice of which window to use depends upon what you want to measure and your source’s signal characteristics.
Use the following guidelines to select the best window:
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Acquire the signal
Description
Window
Kaiser
The frequency resolution when using the Kaiser window is fair; the spectral leakage
and amplitude accuracy are both good.
The Kaiser window is best used when frequencies are very close to the same value
but have widely differing amplitudes (the side lobe level and shape factor are closest
to the traditional Gaussian RBW). This window is also good for random signals.
Rectangular
The frequency resolution when using the Rectangular (a.k.a. boxcar or none) window
is very good, the spectral leakage is high, and amplitude accuracy is poor.
Use the Rectangular window for measuring transients or bursts where the signal
levels before and after the event are nearly equal. Also, use this window for equalamplitude sine waves with frequencies that are very close together, and for
broadband random noise with a relatively slow varying spectrum. This window is the
best type for measuring the frequency spectrum of non-repetitive signals, and
measuring frequency components near DC.
Hamming
The frequency resolution when using the Hamming window is good (slightly better
than Hanning), the spectral leakage is moderate, and amplitude accuracy is fair.
Use the Hamming window for measuring sine, periodic, and narrow band random
noise. This window works well on transients or bursts where the signal levels before
and after the event are significantly different.
Hanning
The frequency resolution when using the Hanning (a.k.a. Hann) window is good, the
spectral leakage is low and amplitude accuracy is fair.
Use the Hanning window for measuring sine, periodic, and narrow band random
noise. This window works well on transients or bursts where the signal levels before
and after the event are significantly different.
Blackman-Harris
The frequency resolution when using the Blackman-Harris window is poor, the
spectral leakage is very low and amplitude accuracy is good.
Use the Blackman-Harris window for measuring predominantly single frequency
waveforms to look for higher order harmonics, or several moderately or widely
spaced sinusoidal signals.
Flat-Top
The frequency resolution when using a Flat-Top window is poor, the spectral leakage
is low and amplitude accuracy is very good.
Use the Flat-Top window for making accurate amplitude measurements of
moderately or widely spaced sinusoidal signals.
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Trigger setup
This section contains concepts and procedures for setting up the oscilloscope to trigger on your signal.
Triggering concepts
Trigger event
The trigger event establishes the time-reference point in the waveform record. All waveform record data is located in time with
respect to that point. The instrument continuously acquires and retains enough sample points to fill the pretrigger portion of the
waveform record. That is the part of the waveform that is displayed before, or to the left of, the triggering event on screen. When
a trigger event occurs, the instrument starts acquiring samples to build the posttrigger portion of the waveform record, that is, the
part displayed after or to the right of the trigger event. After a trigger is recognized, the instrument will not accept another trigger
until the acquisition is complete and the holdoff time has expired.
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Trigger setup
Trigger modes
The trigger mode determines how the instrument behaves in the absence of a trigger event:
■ Normal trigger mode enables the instrument to acquire a waveform only when it is triggered. If no trigger occurs, the last
waveform record acquired remains on the display. If no last waveform exists, no waveform is displayed.
■ Auto trigger mode enables the instrument to acquire a waveform even if a trigger does not occur. Auto mode uses a timer
that starts when the acquisition is started, and the pretrigger information is obtained. If a trigger event is not detected before
the timer times out, the instrument forces a trigger. The length of time it waits for a trigger event depends on the time base
setting.
Auto mode, when forcing triggers in the absence of valid triggering events, does not synchronize the waveform on the display.
The waveform will appear to roll across the screen. If valid triggers occur, the display will become stable.
You can also force the instrument to trigger by pushing the front panel Force Trig button.
Trigger holdoff
Adjust holdoff to obtain stable triggering when the instrument is triggering on undesired trigger events.
Trigger holdoff can help stabilize triggering, since the oscilloscope does not recognize new triggers during the holdoff time. When
the instrument recognizes a trigger event, it disables the trigger system until acquisition is complete. In addition, the trigger
system remains disabled during the holdoff period that follows each acquisition.
Trigger coupling
Trigger coupling determines what part of the signal is passed to the trigger circuit. Edge and Sequence triggering can use all
available coupling types: DC, AC, Low Frequency Rejection, High Frequency Rejection, and Noise Rejection. All other trigger
types use DC coupling only.
Horizontal Position
When Delay Mode is on, use horizontal position to acquire waveform detail in a region that is separated from the trigger location
by a significant interval of time.
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Trigger setup
1.
Adjust the position (delay) time by rotating the Horizontal Position knob.
2.
Turn horizontal SCALE to acquire the detail that you need around the position (delay) expansion point.
The part of the record that occurs before the trigger is the pretrigger portion. The part that occurs after the trigger is the
posttrigger portion. Pretrigger data can help you troubleshoot. For example, to find the cause of an unwanted glitch in your test
circuit, you can trigger on the glitch and make the pretrigger period large enough to capture data before the glitch. By analyzing
what happens before the glitch, you may uncover information that helps you find the source of the glitch. Alternatively, to see
what is happening in your system as a result of the trigger event, make the posttrigger period large enough to capture data after
the trigger
Slope and level
The slope control determines whether the instrument finds the trigger point on the rising or the falling edge of a signal.
The level control determines where on that edge the trigger point occurs.
The oscilloscope provides a long horizontal bar or bars across the graticule to temporarily show the trigger level.
1.
Turn the front panel Trigger Level knob to adjust the trigger level without going to a menu.
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Trigger setup
2.
Push the front panel Trigger Level knob to quickly set the trigger level to the midpoint of the waveform.
Choosing a trigger type
To select a trigger.
1.
Push Trigger Menu.
2.
Push Type to bring up the Trigger Type side menu.
NOTE. The bus trigger in the MDO4000C Series works on parallel buses even without an application module. Using the bus
trigger on other buses requires use of a DPO4AERO, DPO4AUDIO, DPO4AUTO, DPO4AUTOMAX, DPO4COMP,
DPO4EMBD, DPO4ENET, or DPO4USB application module.
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3.
Turn Multipurpose a to select the desired trigger type.
4.
Complete the trigger setup using the lower menu controls displayed for the trigger type. The controls to set up the trigger
vary depending on the trigger type.
MDO4000C Series Oscilloscope User Manual
Trigger setup
Selecting triggers
Trigger Type
Trigger Conditions
Edge
Trigger on a rising edge, a falling edge, or both edges as
defined by the slope control. Coupling choices are DC, LF
Reject, HF Reject, and Noise Reject.
Edge triggers are the simplest and most commonly used trigger
type, with both analog and digital signals. An edge trigger event
occurs when the trigger source passes through a specified
voltage level in the specified direction.
Sequence
(B Trigger)
Combine an edge A Event (Main) trigger with the B Event
(Delayed) trigger to capture more complex signals.
Time. After the A Event occurs, the trigger system waits the
specified amount of time, and then looks for the B Event before
triggering and displaying the waveform.
Events. After the A Event occurs, the trigger system looks for a
specified number of B Events before triggering and displaying
the waveform.
Pulse Width
Trigger on pulses that are less than, greater than, equal to, or
not equal to a specified time. Additionally, you can trigger when
a pulse width is within or outside a range of two different
specified times. You can trigger on positive or negative pulses.
Pulse width triggers are primarily used on digital signals.
Timeout
Trigger when no pulse is detected within a specified time. The
signal stays above or below (or either above or below) a set
value for a set amount of time.
Runt
Trigger on a pulse amplitude that crosses one threshold but
fails to cross a second threshold before recrossing the first.
You can detect positive or negative (or either) runts, or only
those wider than, less than, greater than, equal to, or not equal
to a specified width. Runt triggers are primarily used on digital
signals.
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Trigger setup
Trigger Type
Trigger Conditions
Logic
Trigger when all channels transition to the specified state. Use
multipurpose knob a to select a channel. Push the appropriate
button on the side menu to set that channel's state to High (H),
Low (L), or Don't Care (X).
Push Clock on the side menu to enable clocked (state)
triggering. You can have at most a single clock channel. Push
Clock Edge on the lower menu to change the polarity of the
clock edge. Turn off clocked triggering and return to unclocked
(pattern) triggering by selecting the clock channel and setting it
to high, low, or don't care.
For unclocked triggering, by default, triggering occurs when the
selected condition goes true. You can also select triggering
when the condition goes false, or time-qualified triggering.
You can use up to 21 channels for a Logic trigger (4 analog,
16 digital, and 1 RF).
NOTE. To use the RF input in a Logic trigger, you must first
install the MDO4TRIG application module.
NOTE. Optimum Logic trigger performance is achieved by
using only analog channels or only digital channels.
Setup and Hold
Trigger when a logic data input changes state inside of the
setup or hold time relative to a clock edge.
Setup is the amount of time that data should be stable and not
change before a clock edge occurs. Hold is the time that data
should be stable and not change after a clock edge occurs.
MDO4000C Series oscilloscopes are capable of multiple
channel Setup and Hold triggering, and can monitor the state of
an entire bus for setup and hold violations. You can use up to
20 channels for a Setup and Hold trigger (4 analog and
16 digital).
Push Clock on the side menu to select the clock channel. Push
the Select control, Data, and Not used buttons to select one or
more channels you want to monitor for setup and hold
violations.
NOTE. Optimum Setup and Hold trigger performance is
achieved by using only analog channels or only digital
channels.
Rise/Fall Time
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Trigger on rise and fall times. Trigger on pulse edges that
traverse between two thresholds at faster or slower rates than
the specified time. Specify pulse edges as positive or negative
or either.
MDO4000C Series Oscilloscope User Manual
Trigger setup
Trigger Type
Trigger Conditions
Video
Trigger on specified fields or lines of a composite video signal.
Only composite signal formats are supported.
Trigger on NTSC, PAL, or SECAM. Works with Macrovision
signals.
With the DPO4VID module, trigger on a variety of HDTV video
standard signals, as well as custom (non-standard) bilevel and
trilevel video signals with 3 to 4,000 lines.
Bus
Trigger on various bus conditions.
I2C requires a DPO4EMBD module.
SPI requires a DPO4EMBD module.
CAN requires a DPO4AUTO or DPO4AUTOMAX module.
RS-232, RS-422, RS-485, and UART require a DPO4COMP
module.
LIN requires either a DPO4AUTO or a DPO4AUTOMAX
module.
FlexRay requires a DPO4AUTOMAX module.
Audio requires a DPO4AUDIO module.
USB requires a DPO4USB module.
Ethernet requires a DPO4ENET module.
MIL-STD-1553 requires a DPO4AERO module.
See Application module free trial on page 17.
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Trigger setup
Triggering on buses
You can use your oscilloscope to trigger on multiple data buses, if you have the appropriate application module installed. The
MDO4000C Series with Option MDO4MSO can trigger on parallel buses without an application module. The oscilloscope can
display both the physical layer (as analog waveforms) and the protocol level information (as digital and symbolic waveforms).
To set up the bus trigger:
1.
If you have not already defined your bus
using the front panel B1, B2, or B3
buttons, do so now.
2.
Push Trigger Menu.
3.
Push Type.
4.
Turn multipurpose knob a to scroll through the trigger type side menu until you select Bus.
5.
Push Source Bus and use the Source Bus side menu to select the bus that you want to trigger on.
6.
Push Trigger On and select the desired trigger on feature from the side menu.
Parallel bus trigger
(Requires option MDO4MSO.)
You can trigger on a binary or hex data value. Push Data on the lower menu and enter the parameters of interest with
multipurpose knobs a and b.
I2C bus trigger
You can trigger on Start, Repeated Start, Stop, Missing Ack, Address, Data, or Address/Data.
If you are setting up an I2C trigger and have made a Trigger On selection of Address or Address/Data, push Address on the
lower menu to access the I2C Address side menu.
Push Addressing Mode on the side menu and select 7 bit or 10 bit. Push Address on the side menu. Enter the address
parameters of interest with multipurpose knobs a and b.
Then push Direction on the lower menu and select the direction of interest: Read, Write, or Read or Write.
If you have made a Trigger On selection of Data or Address/Data, push Data on the lower menu to access the I2C Data side
menu.
Push Number of Bytes and enter the number of bytes with multipurpose knob a.
Push Addressing Mode on the side menu and select 7-bit or 10–bit. Push Data on the side menu. Enter the data parameters of
interest with multipurpose knobs a and b.
For more information on the I2C address formats, refer to item 2 under Setting Up Bus Parameters.
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Trigger setup
SPI bus trigger
You can trigger on SS Active, MOSI, MISO, or MOSI & MISO.
If you are setting up an SPI trigger and have made a Trigger On selection of MOSI or MISO, push Data on the lower menu, push
MOSI or MISO on the side menu, and enter the data parameters of interest using multipurpose knobs a and b.
Then push Number of Bytes and enter the number of bytes with multipurpose knob a.
If you select MOSI & MISO, push Data on the lower menu and enter the parameters of interest in the side menus.
RS-232 bus trigger
You can trigger on Tx Start Bit, Rx Start Bit, Tx End of Packet, Rx End of Packet, Tx Data, or Rx Data.
If you are setting up an RS-232 trigger and have made a Trigger On selection of Tx Data or Rx Data, push Data on the lower
menu.
Push Number of Bytes and enter the number of bytes with multipurpose knob a.
Push Data on the side menu, and enter the parameters of interest with multipurpose knobs a and b.
CAN bus trigger
You can trigger on Start of Frame. Type of Frame, Identifier, Data, Id & Data, End of Frame, and Missing Ack.
If you are setting up a CAN trigger and have made a Trigger On selection of Type of Frame, push Frame Type on the lower
menu, and select Data Frame, Remote Frame, Error Frame, or Overload Frame.
If you have made a Trigger On selection of Identifier, push Identifier on the lower menu and select a Format. Then push
Identifier on the side menu, and enter a binary or hex value with multipurpose knobs a and b.
Push Direction on the lower menu and select the direction of interest: Read, Write, or Read or Write.
If you have made a Trigger On selection of Data, push Data on the lower menu and enter the parameters of interest.
LIN bus trigger
You can trigger on Sync, Identifier, Data, Id & Data, Wakeup Frame, Sleep Frame, or Error.
If you are setting up an LIN trigger and have made a Trigger On selection of Identifier, Data, or Identifier & Data, push
Identifier or Data on the lower menu and enter the parameters of interest on the resulting side menu.
If you have made a Trigger On selection of Error, push Error Type on the lower menu and enter the parameters of interest on
the side menu.
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Trigger setup
FlexRay bus trigger
You can trigger on Start of Frame, Type of Frame, Identifier, Cycle Count, Header Fields, Data, Id & Data, End of Frame or
Error.
Audio bus trigger
If you are using an I2C, Left Justified (LJ), or Right Justified (RJ) audio bus, you can trigger on Word Select or Data.
If you are using an TDM audio bus, you can trigger on Frame Sync or Data.
USB bus trigger
You can trigger on Sync, Reset, Suspend, Resume, End of Packet, Token (Address) Packet, Data Packet, Handshake
Packet, Special Packet, or Error.
NOTE. For triggering on a high speed USB bus (480 MB/s), use an oscilloscope with 350 MHz or higher bandwidth.
Ethernet bus trigger
You can trigger on Start Frame Delimiter, MAC Addresses, MAC Length/Type, TCP/IPv4 Client Data, End of Packet, Idle, or
an FCS (CRC) Error. If you turn on Q-(VLAN) Tagging, you can also trigger on MAC Q-Tag Control Information.
MIL-STD-1553 bus trigger
You can trigger on Sync, Command, Status, Data, Time (RT/IMG), or Error.
If you are setting up a MIL-STD-1553 trigger and have made a Trigger On selection of Command, push RT Address on the
lower menu to enter specific values of RT Address to trigger on. Push Command Word Details on the lower menu to enter the
T/R bit value, Subaddress/Mode value, Word Count/Mode Code value, and Parity value.
If you are setting up a MIL-STD-1553 trigger and have made a Trigger On selection of Status, push RT-Address on the lower
menu to enter specific values of RT Address to trigger on. Push Status Word Bits on the lower menu to enter values for
Message Error (bit 9), Instr. (bit 10), Service Req. (bit 11), BCR (bit 15), Busy (bit 16), Subsystem Flag (bit 17), DBCA (bit
18), Terminal Flag (bit 19) and Parity.
If you are setting up a MIL-STD-1553 trigger and have made a Trigger On selection of Data, push Data on the lower menu to
enter specific Data values, and the Parity value.
If you are setting up a MIL-STD-1553 trigger and have made a Trigger On selection of Time (RT/IMG), push Trigger When on
the lower menu to set the trigger condition. Push Times on the lower menu to set the Maximum and Minimum times.
If you are setting up a MIL-STD-1553 trigger and have made a Trigger On selection of Error, push l Error Type on the lower
menu to select the type of error to trigger on.
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Trigger setup
Data value matching
You can trigger on a specific data value for RS-232 bytes. If you defined an end-of-packet character to use for RS-232 bus
decoding, you can use the same end-of-packet character as a data value for trigger data matching. To do so, choose the Tx End
of Packet or the Rx End of Packet character as the Trigger On selection.
You can also trigger on a specific data value for other buses.
Parallel bus trigger data matching
Optimum parallel bus trigger performance is achieved by using only analog channels or only digital channels.
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Trigger setup
Checking trigger settings
To quickly determine the settings of some key
trigger parameters, check the Trigger readout
at the bottom of the display. The readouts
differ for edge and the advanced triggers.
1.
Trigger source = channel 1.
2.
Trigger slope = rising.
3.
Trigger level = 0.00 V.
Using sequence trigger (A (main) and B (delayed))
Combine an edge A Event (Main) trigger with the B Event (Delayed) trigger to capture more complex signals. After the A Event
occurs, the trigger system looks for the B Event before triggering and displaying the waveform.
A and B triggers can (and typically do) have separate sources.
NOTE. You can select sequence triggering when you choose the slope type Falling or Rising — but not when you pick the slope
type Both.
Use the Edge trigger menu to set up the A trigger first. Then, to use the B trigger:
1.
Push Trigger Menu.
2.
Push Type.
3.
Turn Multipurpose a to select a trigger type of Sequence (B Trigger).
This brings up the Sequence (B Trigger) menu.
4.
Push B Trigger After A.
Select the method for sequencing the B trigger after the A by pushing a side menu button.
5.
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Set the other Sequence Trigger parameters in the related side and lower menus.
MDO4000C Series Oscilloscope User Manual
Trigger setup
B trigger after delay time
The A trigger arms the instrument. Posttrigger acquisition starts on the first B edge after the trigger delay time.
Trigger on B events
The A trigger arms the instrument. Posttrigger acquisition starts on the nth B event.
TIP.
■
B-trigger delay time and horizontal position are independent functions. When you establish a trigger condition using either
the A trigger alone or the A and B triggers together, you can also use the horizontal position control to delay the acquisition
by an additional amount.
■
When using the B trigger, the A and B trigger types can only be Edge.
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Trigger setup
Starting and stopping an acquisition
1.
After you have defined the acquisition
and trigger parameters, start the
acquisition with Run/Stop or Single.
■
Push Run/Stop to start acquisitions. The oscilloscope acquires repeatedly until you push the button again to stop the
acquisition.
■
Push Single to take a single acquisition.
■
If any RF trace and any other analog or digital waveform are active, then pressing Run/Stop to stop acquisitions will
cause the oscilloscope to wait for one more trigger event before stopping. While waiting for the trigger event, the Run/
Stop button will turn yellow and the Single button will turn green. Once the acquisition occurs, the Run/Stop button will
turn red and the Single button will become unlit.
Single sets the trigger mode to Normal for the single acquisition.
If the Trigger Mode is set to Auto and another trigger event does not occur within the Auto trigger timeout period then an
acquisition will be made and the instrument will stop.
If the Trigger mode is set to Normal, the oscilloscope will continue waiting for a trigger event to occur as long as necessary
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MDO4000C Series Oscilloscope User Manual
Display waveform or trace data
This section contains concepts and procedures for displaying the acquired waveform or trace.
Adding and removing a waveform
1.
To add or remove a waveform from the
display, push the corresponding front
panel channel button or the D15-D0
button.
You can use the channel as a trigger
source whether or not it is displayed.
Setting the display style and persistence
1.
To set the display style, push Acquire.
2.
Push Waveform Display.
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Display waveform or trace data
3.
Push Dots Only On Off on the side menu. Dots on will display the waveform record points as dots on the screen. Dots off
connects the dots with vectors.
4.
Push Persistence to Off to display the display persistence.
5.
Push Persist Time, and turn Multipurpose a to have waveform data remain on screen for a user-specified amount of time.
6.
Push Set to Auto to have the oscilloscope automatically determine a persistence time for you.
7.
Push Clear Persistence to reset the persistence information.
8.
To display the amplitude from one waveform against the amplitude from another, push XY Display. Then push Triggered XY
from the side menu.
A data point from the first waveform specifies the horizontal location while the corresponding data point from the second
waveform specifies the vertical location for each displayed point.
You can optionally view both the YT and XY displays simultaneously on the same screen.
NOTE.
92
■
Variable persistence accumulates record points for a specified time interval. Each record point decays independently
according to the time interval. Use variable persistence for displaying infrequently appearing signal anomalies, such as
glitches.
■
Infinite persistence continuously accumulates record points until you change one of the acquisition display settings.
Use infinite persistence for displaying unique signal anomalies, such as glitches.
■
The XY Display mode graphs the data in fixed pairs of waveforms against one another.
MDO4000C Series Oscilloscope User Manual
Display waveform or trace data
Setting the graticule style
1.
To set the graticule style, push Utility.
2.
Push Utility Page.
3.
Turn Multipurpose a and select Display.
4.
Push Graticule on the lower menu.
5.
Select the desired style on the side menu.
The Frame graticule provides a clean screen on which you can most easily read automatic measurement results and other
screen text.
The Full graticule can help you make cursor measurements on hard copies.
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Display waveform or trace data
TIP. You can display IRE and mV graticules. To do this, set the trigger type to video and set the vertical scale to 114 mV/division.
(The 114 mV/division selection is available in the fine vertical scale settings for the channel when you set the trigger type to
video.) The oscilloscope will automatically display the IRE graticule for NTSC signals, and the mV graticule for other video
signals (PAL, SECAM, HDTV, and custom).
Setting the LCD backlight brightness and dimming settings
94
1.
Push Utility.
2.
Push Utility Page.
3.
Turn Multipurpose a and select Display.
4.
Push Backlight .
5.
Select the intensity level on the side menu. Choices are: High, Medium, and Low.
6.
Enabling Auto-Dim will turn down the screen lighting after a set time. Using it may help prolong the LCD life.
MDO4000C Series Oscilloscope User Manual
Display waveform or trace data
Setting waveform intensity
1.
Push Intensity on the front panel.
This will bring up the intensity readout on the
display.
2.
Rotate multipurpose knob a to select the
desired waveform intensity.
3.
Rotate multipurpose knob b to select the
desired intensity for the graticule.
4.
Push Intensity again to clear the
intensity readout from the display.
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Display waveform or trace data
Scaling and positioning a waveform
Use the horizontal controls to adjust the time base, adjust the trigger point, and to examine waveform details more closely. You
can also use the Wave Inspector Pan and Zoom controls to adjust the display of waveforms. See Using Wave Inspector to
manage long record length waveforms on page 135.
If you push the Horizontal Position knob and Delay is set to On, the horizontal position is set to 0 seconds. If you push it and
Delay is set to Off, the horizontal position is set to 10%.
Original waveform
Scaled horizontally
Positioned horizontally
Use the vertical controls to select waveforms, adjust the waveform vertical position and scale, and set input parameters. Push a
channel menu button (1, 2, 3, or 4), button as many times as needed and the associated menu items to select, add, or remove a
waveform.
Pushing the Vertical position control will center the waveform on the screen vertically, and pushing the Vertical scale control will
switch from Coarse to Fine scaling.
Original waveform
Original waveform
Scaled vertically
Scaled vertically
Positioned vertically
Positioned vertically
Quick Tips
■
Preview. If you change the Position or Scale controls when the acquisition is stopped or when it is waiting for the next
trigger, the oscilloscope rescales and repositions the relevant waveforms in response to the new control settings. It
simulates what you will see when you next push the RUN button. The oscilloscope uses the new settings for the next
acquisition.
You may see a clipped waveform if the original acquisition went off the screen.
The math waveform, cursors, and automatic measurements remain active and valid when using preview.
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Display waveform or trace data
Setting input parameters
Use the vertical controls to select waveforms, adjust the waveform vertical position and scale, and set input parameters.
1.
Push a channel menu button 1, 2, 3, or 4
to bring up the vertical menu for the
designated waveform. The vertical menu
only affects the selected waveform.
Pushing a channel button will also select
or cancel that waveform selection.
2.
Push Coupling repeatedly to select the
coupling to use.
Coupling DC |
AC
Termination
1MΩ | 50Ω
Invert On | Off
Bandwidth Full
(1) Label
2
3
4
5
6
Use DC coupling to pass both AC and
DC components.
More
7
8
Use AC coupling to block the DC
component and show only the AC signal.
3.
Push Termination repeatedly to select the input impedance to use.
Set the input impedance (termination) to 50 Ω or 1 MΩ if using DC coupling. Input impedance is automatically set to
1 MΩ when using AC coupling.
4.
Push Invert to invert the signal.
Select Off for normal operation and On to invert the polarity of the signal in the preamplifier.
5.
Push Bandwidth, and select the desired bandwidth on the side menu.
The set choices are: Full, 250 MHz, and 20 MHz. Additional choices may appear, depending on the probe that you use.
Select Full to set the bandwidth to the full oscilloscope bandwidth.
Select 250 MHz to set the bandwidth to 250 MHz.
Select 20 MHz to set the bandwidth to 20 MHz.
NOTE. 200 MHz model oscilloscopes do not include a 250 MHz option on the menu.
6.
Push Label to create a label for the channel.
7.
For some types of probes, you can push this button to instruct the oscilloscope to perform an AC calibration on the entire
signal path from the probe tip to the specific oscilloscope channel. This can result in a flatter frequency response over the
entire frequency range.
8.
Push More to access additional side menus.
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Display waveform or trace data
9.
Select Fine Scale to enable multipurpose
knob a to make fine vertical scale
adjustments.
Fine Scale
Offset
Probe setup
Deskew
9
10
11
12
10. Select Offset to enable multipurpose
knob a to make vertical offset
adjustments.
Push Set to 0 V on the side menu to set
the vertical offset to 0 V.
11. Select Probe Setup to define probe parameters.
On the side menu:
■
Select Voltage or Current to set the probe type for probes that do not have a TekProbe Level 1, TekProbe II
(requires a TPA-BNC adapter) or TekVPI interface.
■
For probes that do not have a Tek interface, when Probe Type is set to Voltage, use multipurpose knob a to set
Attenuation to match the probe
■
For probes that do not have a Tek interface, when Probe Type is set to Current, use multipurpose knob a to set the
Amps/Volts ratio (Attenuation) to match the probe.
■
If you are measuring current by probing the voltage drop across a resistor, set Measure Current to Yes. Push A/V
ratio on the side menu and turn multipurpose knob a to set the Amps/Volts or Volts/Amp ratio of your setup. For
example, if you are measuring the drop across a 2 Ω resistor, set the V/A ratio to 2.
12. Select Deskew to make display and measurement adjustments for probes that have differing propagation delays. This is
especially important when using a current probe in conjunction with a voltage probe.
For best results, use a deskew fixture, such as the Tektronix 067-1686-xx.
If you do not have a deskew fixture, you can use the controls in the Deskew menu to set the oscilloscope's deskew parameters to
recommended values, based on the nominal propagation delay of each probe. The oscilloscope automatically loads the nominal
propagation delay values of TekVPI and TekProbe II (requires use of a TPA-BNC adaptor) probes. For other common probes,
first push Select on the side menu, and select the channel to which the probe is attached. Then push Probe Model on the side
menu, and select the probe model. If your probe is not in the list, set probe model to Other, and push Propagation Delay on the
side menu and dial in its propagation delay with multipurpose knob a.
To display the recommended deskew values calculated by the oscilloscope, set Show rec. deskews on the side menu to Yes.
To set the deskew values of each channel to the recommended values, push Set all deskews to recommended values on the
side menu.
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TIP.
■
Using Probes with the TekProbe II and TekVPI Interfaces. When you attach a probe with the TekProbe II or the TekVPI
interface, the oscilloscope sets the channel sensitivity, coupling, and termination resistance automatically to match the
probe requirements. Tek Probe II probes require use of the TPA-BNC Adapter.
■
The Difference Between Vertical Position and Offset. Adjust the vertical position to place the waveforms where you want
to see them. The waveform baseline indicators indicate the zero Volts (or Amps) level for each waveform. If you adjust the
channel's Vertical Scale, the waveform expands or contracts around the waveform's baseline indicator.
When you use the Channel<x> > More >Offset > Vertical Offset control to move a waveform, the baseline indicator no
longer represents zero. Instead, it represents the level of the offset. If you adjust the channel's Vertical Scale, the waveform
expands or contracts around the waveform's baseline indicator.
■
50 Ω Protection. If you select 50 Ω termination, the maximum vertical scale factor is limited to 1 V/div, except that with a
10X probe the scale factor is 10 V. If you apply excessive input voltage, the oscilloscope automatically switches to
1 MΩ termination to protect the internal 50 Ω termination. For more details, refer to the specifications in the MDO4000C
Series Oscilloscopes Technical Reference.
Positioning and labeling bus signals
Positioning bus signals.
Push the appropriate front panel bus button and turn the Multipurpose a knob to adjust the vertical position of the selected bus.
1.
Push the appropriate front panel bus button to select that bus.
2.
Turn the Multipurpose a knob to adjust the vertical position of the selected bus.
Labeling bus signals. To label a bus, do the following steps:
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Display waveform or trace data
1.
Push the appropriate front panel bus button.
2.
Push Label.
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Positioning, scaling, and grouping digital channels
1.
Push the front panel D15–D0 button.
2.
Push D15–D0 on the lower menu.
D15 – D0
On/Off
Thresholds
Edit Labels
2
3.
Push Select on the side menu.
Select
(a) D0
(b) 1.04 div
Monitor
MagniVu
On | Off
Height
S |ML
6
3
Display
On | Off
Turn on
D7–D0
Turn on
D15–D8
4.
Turn multipurpose knob a to select the
channel to move.
5.
Turn multipurpose knob b to move the
selected channel.
NOTE. The display of the channel (or
group) only moves after you stop rotating
the knob.
6.
To change the scale (height) of the digital channels, push Height on the lower menu.
NOTE. The S (Small) selection will display each waveform at 0.2 divisions tall. The M (Medium) selection will display
each waveform at 0.5 divisions tall. The L (Large) selection will display each waveform at 1 division tall. L only works if
there is enough room in the display to display the waveforms. You can display up to 10 L waveforms at one time.
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7.
You can label individual digital channels for easier identification. Labeling Channels and Buses on page 47.
8.
To group some or all of the digital channels together, move the channels right next to each other. All the channels that
are next to each other automatically form a group.
You can see the groups by pushing Select on the side menu and turning multipurpose knob a.
When a group is selected, turn multipurpose knob b to move the whole group.
Viewing digital channels
The various ways of displaying data from the digital channels help you analyze the signals. Digital channels store a high or low
state for each sample.
Logic high levels are displayed in green. Logic low levels are displayed in blue. When a single transition occurs during the time
represented by one pixel column, the transition (edge) is displayed in gray.
When multiple transitions occur during the
time represented by one pixel column, the
transition (edge) is displayed in white.
When the display shows a white edge,
indicating multiple transitions, you may be
able to zoom in and see the individual edges.
When you are zoomed in so far that there is
more than one pixel column per sample, the
uncertainty of the edge position is indicated
by light gray shading.
NOTE. When the light gray shading is
displayed, use MagniVu.
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Annotating the screen
You can add your own text to the screen by doing the following:
1.
Push Utility.
2.
Push Utility Page.
3.
Turn multipurpose knob a and select
Display.
4.
Push Screen Annotation on the
resulting lower menu.
5.
Push Display Annotation to select On on the side menu.
Utility Page
Display
3
Backlight
Intensity
High
Graticule
Full
Screen
Annotation
Trigger
Frequency
Readout
4
The annotation window now appears. Position it by turning multipurpose knobs a and b.
6.
Push Edit Annotation on the side menu
7.
Turn multipurpose knob a to scroll through the list of letters, numbers, and other characters to select each desired
character.
Alternatively, use a USB keyboard to type in characters. See Connecting a USB keyboard to your oscilloscope on
page 28.
To reposition the annotated text, push Position on the side menu and turn multipurpose knobs a and b, as desired.
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Display waveform or trace data
Viewing the trigger frequency
You can display a readout of trigger frequency. It counts all of the triggerable events, whether the oscilloscope triggered on them
or not, and displays the number of times per second that they occur. To display this readout, do the following:
1.
Push Utility.
2.
Push Utility Page.
3.
Turn multipurpose knob a and select
Display.
4.
Push Trigger Frequency Readout from
the resulting lower menu.
5.
Push On on the side menu.
Utility Page
Display
3
Backlight
Intensity
High
Graticule
Full
Screen
Annotation
Trigger
Frequency
Readout
4
The trigger frequency now appears in the
Trigger readout, toward the lower right of the
display.
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Display waveform or trace data
Displaying the Frequency domain menu
1.
Push RF to display the frequency domain
menu.
2.
Push Spectrum Traces to bring up the
side menu of four different spectrum trace
types that the instrument can display.
Spectrum
Traces
RF Versus Time
Traces
Spectrogram
Off
2
3
4
Spectrum
Triggered
Detection
Method
Auto
Edit Labels
5
6
More
3.
Push RF Versus Time Traces to bring up the side menu of three different RF versus time traces that the MDO4000B
can display.
4.
Push Spectrogram to bring up a side menu to enable and configure the spectrogram display.
5.
Push Detection Method to bring up a side menu of ways to reduce the FFT output to the 1,000 pixel wide display.
6.
Push Edit Label to label the RF and RF versus time traces.
7.
Push More to choose between side menus to compensate the RF signal path or to configure the RF input probe.
7
Trace types
The frequency domain window supports four spectrum traces. You may turn each of these traces on and off independently. You
can display all or some of them simultaneously.
1.
Push Spectrum Traces from the RF
Menu to bring up the related side menu.
Spectrum
Traces
2.
Set Normal to On to display the normal
trace.
3.
Set Average to On to display the
average trace. Turn multipurpose knob a
to set the number of waveforms to
include in each average.
4.
Set Max Hold to On to display the max
hold trace.
5.
Set Min Hold to On to display the min
hold trace.
MDO4000C Series Oscilloscope User Manual
Normal
On | Off
Average
16 On |Off
Max Hold
On |Off
Min Hold
On |Off
2
3
4
5
105
Display waveform or trace data
This figure illustrates the different trace types.
1.
Normal trace: Each acquisition is
discarded as new data is acquired.
2.
Max hold trace: The maximum data
values are accumulated over multiple
acquisitions of the Normal trace.
3.
Min hold trace: The minimum data values
are accumulated over multiple
acquisitions of the Normal trace.
4.
Average trace: Data from the Normal
trace is averaged over multiple
acquisitions. This is true power
averaging, which occurs before the log
conversion. Each power of 2 averaging
reduces the displayed noise by 3 dB.
This figure shows the frequency domain
window’s trace. indicator.
1.
An RF trace indicator is placed at the
Reference Level.
2.
A capital M appears if the maximum trace
is turned on.
3.
A capital A appears if the average trace
is turned on.
4.
A capital N appears if the normal trace is
turned on.
5.
The small m appears if the minimum
trace is turned on.
Orange highlighting indicates the
currently selected trace. In the figure to
the right, the small m, which stands for
the minimum trace, is highlighted. This
indicates that the minimum trace is
currently selected.
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Detection types
The MDO4000C oscilloscope calculates FFTs with a 1,000 to ~2,000,000 point output, depending on the acquisition settings. It
then reduces that FFT output into a 750 pixel-wide display. This means that approximately 1 to 2,000 FFT points get compressed
into each pixel column. The MDO4000C gives you several choices as to how this compression is done. The choices are: +peak,
sample, average, and -peak. The figure below illustrates how these detection methods work in a 5:1 compression, where five
points are reduced to each pixel column.
1.
FFT points
2.
Decimation
3.
+Peak: Uses the highest amplitude point in each interval.
4.
Sample: Uses the first point in each interval.
5.
Average: Averages all points in each interval.
6.
–Peak: Uses the lowest amplitude point in each interval.
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Display waveform or trace data
Spectrogram display
The spectrogram display is particularly useful for monitoring slowly-changing RF phenomena. The x-axis represents frequency,
just like the typical spectrum display. The y-axis represents time. Color indicates amplitude.
Spectrogram slices are generated by taking each spectrum and flipping it on its edge so that it is one pixel row tall, and then
assigning colors to each pixel based on the amplitude at that frequency with the cold colors of blue and green representing low
amplitude, and the hotter colors of yellow and red indicating higher amplitude. Each new acquisition adds another slice at the
bottom of the spectrogram, and the history moves up one row.
When acquisitions are stopped, you can navigate through the history of the spectrogram by pressing the side menu slice control
and turning the Multipurpose a knob. When acquisitions are stopped and the spectrogram is displayed, the spectrogram slice
trace is displayed as the Normal spectrum trace.
To use the spectrogram feature, push Spectrogram from the RF Menu to bring up the related side menu.
108
1.
Push Display to On to start the spectrogram.
2.
To review each spectrum captured in the spectrogram, push Run / Stop to stop acquiring RF acquisitions. Turn
Multipurpose a.
MDO4000C Series Oscilloscope User Manual
Analyze waveform or trace data
After having properly set up the acquisition, triggering, and display of your desired waveform or trace, you can analyze the
results. Select from features such as cursors, automatic measurements, statistics, waveform histograms, math, and FFT.
Using markers in the frequency domain
1.
Push Markers. This brings up the Markers side menu.
2.
Push Peak Markers and turn Multipurpose a to select how many peaks to label on the display.
NOTE. This is the maximum number of peaks that will be marked. If there are more peaks that meet the threshold and
excursion criteria than the specified number of Peak Markers identified in this control, then only the specified number of
highest amplitude peaks will be marked.
3.
Push
To Center to set the center frequency to the frequency indicated by the Reference Marker. The Reference Marker is
automatically placed on the highest amplitude peak.
4.
Push Threshold and turn Multipurpose a to define the threshold of the peak markers. Turn Multipurpose b to define their
excursion value.
5.
Push Manual Markers to activate manual markers. Use manual markers to measure non-peak areas of interest in the
spectrum.
6.
Push Readout to choose between Absolute and Delta readouts. Delta readouts are relative to the Reference Marker.
Automatic peak markers
Automatic peak markers are on by default and assist with quickly identifying the frequency and amplitude of peaks in the
spectrum.
1.
The Reference Marker is placed on the highest amplitude peak. It is marked with a red R in a triangle.
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2.
The automatic markers indicate frequency and amplitude.
3.
Absolute readouts show the actual frequency and amplitude of the automatic markers.
4.
Delta readouts show the frequency and amplitude of the automatic markers relative to the reference marker.
In this screen shot, a marker has been placed on each of the obvious peaks in the display. The Reference Marker is the highest
peak. It is marked with the red R in a triangle, and its readout is shown in red text.
1.
Reference marker
2.
Automatic markers
Use Threshold and Excursion to define which peaks are marked.
The threshold is a minimum amplitude that a signal must cross to be a valid peak. If the threshold is lower, more peaks will tend
to qualify to have markers. If the threshold is higher, fewer peaks tend to qualify to have markers.
The excursion is how far a signal needs to fall in amplitude between marked peaks to be another valid peak. If the excursion is
low, more peaks will tend to qualify to have associated markers. If the excursion is high, fewer peaks will tend to qualify to have
associated markers.
Each automatic marker has a readout associated with it. These can be absolute or delta readouts. An absolute marker readout
shows the actual frequency and amplitude of the associated marker. A delta marker readout shows the frequency and amplitude
differences from the Reference Marker. The Reference Marker’s readout indicates absolute frequency and amplitude, regardless
of the readout type.
Manual markers
Two manual markers are provided for you to measure non-peak areas of the spectrum and to measure Noise Density and Phase
Noise. When the manual markers are turned on, the Reference Marker is no longer automatically attached to the highest
amplitude peak. It is now assigned to the Multipurpose a knob and can be moved to any location you desire. This enables easy
measurement of any part of the spectrum as well as delta measurements to any part of the spectrum. This also lets you measure
non-peak spectral content of interest. The readouts for manual markers indicate frequency and amplitude, just like automatic
marker readouts.
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As with automatic peak marker readouts, the manual marker readouts can show either absolute or delta values.
1.
One manual marker is controlled by Multipurpose a.
2.
The other manual marker is controlled by Multipurpose b.
3.
Delta readouts for frequency and amplitude are shown at the top of the display.
4.
The third line of the manual marker a always shows the noise density (dBm/Hz).
5.
The third line of manual marker b always shows noise density when you choose absolute markers. It shows phase noise
when you choose delta markers (dBc/Hz).
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Taking automatic measurements in the time domain
To take an automatic measurement in the time domain:
1.
Push Measure.
2.
Push Domain to select Time domain
measurements.
3.
Push Add Measurement.
4.
Turn multipurpose knob b to select the
specific measurement. If needed, then
turn multipurpose knob a to select the
channel to measure on.
5.
To remove a measurement, push
Remove Measurement, turn
multipurpose knob a to select the specific
measurement, and push OK Remove
Measurement on the side menu.
Quick Tips
112
■
To remove all measurements, select Remove All Measurements.
■
A
symbol appears instead of the expected numerical measurement if a vertical clipping condition exists. Part of the
waveform is above or below the display. To obtain a proper numerical measurement, turn the vertical scale and position
knobs to make all of the waveform appear in the display.
■
If the oscilloscope displays a Low Resolution message, increase the record length of the acquisition so that the
oscilloscope has more points from which to calculate the measurement.
MDO4000C Series Oscilloscope User Manual
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Selecting automatic measurements in the time domain
The following tables list each automatic measurement by category: time or amplitude. See Taking automatic measurements in
the time domain on page 112.
Table 3: Time measurements
Measurement
Description
Frequency
The first cycle in a waveform or gated region. Frequency is the reciprocal of the
period; it is measured in hertz (Hz) where one Hz is one cycle per second.
Period
The time required to complete the first cycle in a waveform or gated region. Period is
the reciprocal of frequency and is measured in seconds.
Rise Time
The time required for the leading edge of the first pulse in the waveform or gated
region to rise from the low reference value (default = 10%) to the high reference
value (default = 90%) of the final value.
Fall Time
The time required for the falling edge of the first pulse in the waveform or gated
region to fall from the high reference value (default = 90%) to the low reference value
(default = 10%) of the final value.
Delay
The time between the mid reference (default 50%) amplitude point of two different
waveforms.
Phase
The amount of time that one waveform leads or lags another waveform, expressed in
degrees where 360° makes up one waveform cycle.
Positive Pulse Width
The distance (time) between the mid reference (default 50%) amplitude points of a
positive pulse. The measurement is made on the first pulse in the waveform or gated
region.
Negative Pulse
Width
The distance (time) between the mid reference (default 50%) amplitude points of a
negative pulse. The measurement is made on the first pulse in the waveform or
gated region.
Positive Duty Cycle
The ratio of the positive pulse width to the signal period expressed as a percentage.
The duty cycle is measured on the first cycle in the waveform or gated region.
Negative Duty Cycle
The ratio of the negative pulse width to the signal period expressed as a percentage.
The duty cycle is measured on the first cycle in the waveform or gated region.
Burst Width
The duration of a burst (a series of transient events) and is measured over the entire
waveform or gated region.
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Table 4: Amplitude measurements
114
Measurement
Description
Peak-to-Peak
The absolute difference between the maximum and minimum amplitude in the entire
waveform or gated region.
Amplitude
The high value less the low value measured over the entire waveform or gated
region.
Max
The most positive peak voltage. Max is measured over the entire waveform or gated
region.
Min
The most negative peak voltage. Min is measured over the entire waveform or gated
region.
High
This value is used as 100% whenever high reference, mid reference, or low
reference values are needed, such as in fall time or rise time measurements.
Calculate using either the min/max or histogram method. The min/max method uses
the maximum value found. The histogram method uses the most common value
found above the midpoint. This value is measured over the entire waveform or gated
region.
Low
This value is used as 0% whenever high reference, mid reference, or low reference
values are needed, such as in fall time or rise time measurements. Calculate using
either the min/max or histogram method. The min/max method uses the minimum
value found. The histogram method uses the most common value found below the
midpoint. This value is measured over the entire waveform or gated region.
Positive Overshoot
This is measured over the entire waveform or gated region and is expressed as:
Positive Overshoot = (Maximum – High) / Amplitude x 100%.
Negative Overshoot
This is measured over the entire waveform or gated region and is expressed as:
Negative Overshoot = (Low – Minimum) / Amplitude x 100%.
Mean
The arithmetic mean over the entire waveform or gated region.
Cycle Mean
The arithmetic mean over the first cycle in the waveform or the first cycle in the gated
region.
MDO4000C Series Oscilloscope User Manual
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Measurement
Description
RMS
The true Root Mean Square voltage over the entire waveform or gated region.
Cycle RMS
The true Root Mean Square voltage over the first cycle in the waveform or the first
cycle in the gated region.
Table 5: Miscellaneous measurements
Measurement
Description
Positive Pulse
Count
The number of positive pulses that rise above the mid reference crossing in the
waveform or gated region.
Negative Pulse
Count
The number of negative pulses that fall below the mid reference crossing in the
waveform or gated region.
Rising Edge Count
The number of positive transitions from the low reference value to the high reference
value in the waveform or gated region.
Falling Edge Count
The number of negative transitions from the high reference value to the low
reference value in the waveform or gated region.
Area
Area measurement is a voltage over time measurement. It returns the area over the
entire waveform or gated region in volt-seconds. Area measured above ground is
positive; area measured below ground is negative.
Cycle Area
A voltage over time measurement. The measurement is the area over the first cycle
in the waveform or the first cycle in the gated region expressed in volt-seconds. The
area above the common reference point is positive, and the area below the common
reference point is negative.
Table 6: Histogram measurements
Measurement
Description
Waveform Count
Displays the number of waveforms that contributed to the histogram.
Hits in Box
Displays the number of samples within the histogram box or on its boundaries.
Peak Hits
Displays the number of samples in the bin that contains the most hits.
Median
Displays the middle histogram data value, where half of all histogram data points are less than this
value and half are greater than this value.
Peak-to-peak
Displays the peak-to-peak value of the histogram. Vertical histograms display the voltage of the
highest nonzero bin minus the voltage of the lowest nonzero bin. Horizontal histograms display the
time of the rightmost nonzero bin minus the time of the leftmost nonzero bin.
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Analyze waveform or trace data
Measurement
Description
Histogram Max
Displays the voltage of the highest nonzero bin in vertical histograms or the time of the rightmost
nonzero bin in horizontal histograms.
Histogram Min
Displays the voltage of the lowest nonzero bin in vertical histograms or the time of the leftmost
nonzero bin in horizontal histograms.
Histogram Mean
Measures the average of all histogram data points within or on the histogram box.
Standard Deviation
Measures the standard deviation (Root Mean Square (RMS) deviation) of all histogram data points
within or on the histogram box.
Sigma1
Displays the percentage of the hits in the histogram that are within one standard deviation of the
histogram mean.
Sigma2
Displays the percentage of the hits in the histogram that are within two standard deviations of the
histogram mean.
Sigma3
Displays the percentage of the hits in the histogram that are within three standard deviations of the
histogram mean.
Customizing an automatic measurement in the time domain
You can customize automatic measurements by using gating, modifying measurement statistics, adjusting the measurement
reference levels, or taking a snapshot.
Gating
Gating confines the measurement to a certain portion of a waveform. To use:
1.
Push Measure.
2.
Push More as many times as needed to select Gating from the resulting pop-up menu.
3.
Position the gates using the side menu options.
Statistics
Statistics characterize the stability of measurements. To adjust statistics:
1.
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Push Measure.
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Analyze waveform or trace data
2.
Push More as many times as needed to select Statistics from the resulting pop-up menu.
3.
Push the side menu options. These include whether to turn statistics on or off and how many samples to use for mean and
standard deviation calculations.
Snapshot
To see all the single-sourced measurements at one moment in time:
1.
Push Measure.
2.
Push Add Measurement.
3.
Turn Multipurpose a to select the desired Source channel.
4.
Turn Multipurpose b to select the Measurement Type of Snapshot.
5.
Push OK Snapshot All Measurements.
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6.
View the results.
Reference levels
Reference levels determine how time-related measurements are taken. For example, they are used in calculating rise and fall
times.
1.
Push Measure.
2.
Push More as many times as needed to select Reference Levels from the resulting pop-up menu.
3.
Set the levels using the side menu. Reference
Use High and Low reference to calculate rise and fall times.
Use Mid reference primarily for measurements between edges such as pulse widths.
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Taking automatic measurements in the frequency domain
To take an automatic measurement in the frequency domain (available for models with option SA3 or SA6 installed):
1.
Push Measure.
2.
Push Domain to select Frequency.
3.
Push Select Measurement.
4.
Choose a frequency domain measurement from the side menu.
■
Channel power: The total power within the bandwidth, defined by the Channel Width.
■
Adjacent channel power ratio: The power in the main channel and the ratio of channel power to main power, for the
upper and lower halves of each adjacent channel.
■
Occupied bandwidth: The bandwidth that contains the specified % of power within the analysis bandwidth.
As you select each frequency measurement, on screen help will appear to explain the purpose of that measurement. A
Configure item will appear on the lower menu. After you press Configure and set the measurement parameters in the resulting
side menu, the oscilloscope will automatically set the span. When the RF measurements are on, the Auto detection method will
set all frequency domain traces to the Average detection method. This provides optimal measurement accuracy.
Taking digital voltmeter measurements
Use the digital voltmeter to measure the potential difference between two points in an electrical circuit.
1.
Push channel 1.
2.
Push Measure.
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120
3.
Push the bottom-menu button labeled DVM.
4.
From the side menu, select the desired Mode, Source and Display Style.
5.
View the finished results.
MDO4000C Series Oscilloscope User Manual
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Taking manual measurements with cursors
Cursors are on-screen markers that you position in the waveform display to take manual measurements on acquired data. They
appear as horizontal and/or as vertical lines. To use cursors on analog or digital channels:
1.
Push Cursors to turn cursors on.
NOTE. A second push turns cursors off.
You can also push and hold Cursors to
display the cursor menu.
In this example, two vertical cursors appear on
the selected waveform. As you turn
multipurpose knob a, you move one cursor to
the right or left. As you turn knob b, you move
the other cursor.
2.
With cursors on, push Select.
This turns the cursor linking on and off. If
linking is on, turning multipurpose knob a
moves the two cursors together. Turning
multipurpose knob b adjusts the time
between the cursors.
3.
Push Fine to toggle between a coarse
and a fine adjustment for multipurpose
knobs a and b.
Pushing Fine also changes the sensitivity
of other knobs as well.
4.
Push and hold Cursors to display the
cursor menu.
5.
Push Cursors on the lower menu to set
the cursors to Screen.
In screen mode, two horizontal bars and
two vertical bars span the graticule.
MDO4000C Series Oscilloscope User Manual
Cursors
Waveform
Screen
Source
Selected
Waveform
5
11
Bars
Horizontal
Vertical
Linked
On Off
Bring Cursors
On Screen
Cursor Units
121
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6.
Turn multipurpose knobs a and b to move
the pair of horizontal cursors.
7.
Push Select.
This makes the vertical cursors active
and the horizontal cursors inactive. Now,
as you turn the multipurpose knobs, the
vertical cursors will move.
Push Select to make the horizontal
cursors active again.
8.
View the cursor and the cursor readout.
NOTE. On digital channels, you can take
timing measurements with cursors, but
not amplitude measurements.
9.
Display multiple waveforms on the screen
by pushing one or more of the channel 1
through 4 buttons or by pushing the D15
– D0 button.
10. Push and hold Cursors to display the
cursor menu again.
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11. Push Source on the lower menu.
A pop-up menu will appear. The default
menu selection of Selected Waveform
will cause the cursors to take
measurements on the selected (last
used) waveform.
12. Turn multipurpose knob a to choose a
channel to measure other than the one
pointed to by Selected Waveform.
13. Push Menu Off to remove the pop-up
menu.
14. Turn multipurpose knob a and take cursor
measurements on the alternate
waveform.
15. Push Cursors again. This turns off the
cursors. The screen no longer displays
the cursors and the cursor readout.
Using cursor readouts
Cursor readouts supply textual and numeric information relating to the current cursor positions. The oscilloscope always shows
the readouts when the cursors are turned on.
Readouts appear in the upper right corner of the graticule. If Zoom is on, the readout appears in the upper right corner of the
zoom window.
When a bus is selected, the readout shows the decoded bus data in the format you have selected from the choices in the bus
menu. When a digital channel is selected, the cursors show the values of all displayed digital channels.
NOTE. When serial or parallel buses are selected, the data value at that point is displayed in the cursor readout.
Δ Readout:
The Δ readouts indicate the difference between the cursor positions.
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a Readout:
Indicates that the value is controlled by the Multipurpose a knob.
b Readout:
Indicates that the value is controlled by the Multipurpose b knob.
The horizontal cursor lines on the display measure the vertical parameters, typically voltage.
The vertical cursor lines on the display measure horizontal parameters, typically time.
The square and circle shapes in the readout map to the multipurpose knobs when both vertical and horizontal cursors are
present.
Using XY Cursors
When the XY Display mode is on, the cursor readouts will appear to the right of the lower graticule (XY). They will include
rectangular, polar, product, and ratio readouts. The oscilloscope will display vertical-bar waveform cursors in the upper graticule
(YT).
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Setting up a histogram
You can display a vertical (voltage) or horizontal (time) histogram. Use histogram measurements to get statistical measurement
data for a section of a waveform along one axis. The sources for a histogram can be any of the four or two analog channels, a
math waveform, or any of the four or two reference waveforms.
To display a histogram
1.
Set up the oscilloscope to show the
waveform on which to measure the
histogram. Use Autoset if appropriate.
2.
Push Measure.
3.
Push Waveform Histograms on the
lower menu.
Add
Measurement
Remove
Measurement
Indicators
Waveform
Histograms
More
Bring Cursors
On Screen
3
4.
Push the top button on the side menu to
select the waveform axis for which you
want to show the histogram values:
Vertical or Horizontal.
5.
Push Source on the side menu and use
multipurpose knob a to select the channel
for which to display histogram
measurements.
6.
Push Horiz. Limits on the side menu and
use the multipurpose knobs a and b to
set the L (left) and R (right) boundaries of
the histogram box.
7.
Push Vert. Limits on the side menu and
use the multipurpose knobs a and b to
set the T (top) and B (bottom) boundaries
of the histogram box.
8.
Push - more - 1 of 2.
MDO4000C Series Oscilloscope User Manual
Off
Vertical
Horizontal
Source
(a) 1
4
5
Horiz. Limits
L (a) -584ns
R (b) 760ns
6
Vert. Limits
T (a) -584ns
B (b) 760ns
7
- more 1 of 2
8
125
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To add measurements on histogram data
1.
Push Add Measurement on the lower menu to add measurements on the histogram data.
2.
Push Source on the side menu and turn Multipurpose a to select H for histogram measurements.
3.
Push Measurement Type on the side menu and turn Multipurpose b to select a histogram measurement.
4.
Push OK Add Measurement on the side menu to add the measurement to the measurement readout list.
To reset histogram measurements and statistics
1.
Push More on the side menu.
2.
Push Waveform Histograms on the lower menu.
3.
Push - more - 1 of 2 on the side menu. - more - 1 of 2
4.
Push Reset Histogram Counts on the side menu.
5.
5. Push Reset Statistics on the side menu. Reset Statistics
You can view the histogram at the top (for horizontal histograms) or the left edge (for vertical histograms) of the graticule.
TIP.
126
■
Use horizontal histograms to measure signal jitter.
■
Use vertical histograms to measure signal noise.
MDO4000C Series Oscilloscope User Manual
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Using math waveforms
Create math waveforms to support the analysis of your channel and reference waveforms. By combining and transforming
source waveforms and other data into math waveforms, you can derive the data view that your application requires.
NOTE. Math waveforms are not available for use with serial buses.
Use the following procedure for executing simple (+, –, x, ÷) math operations on two waveforms:
1.
Push Math.
2.
Push Dual Wfm Math.
Dual Wfm Math
FFT
Advanced Math Spectrum Math
(M) Label
2
3.
On the side menu, set the sources to either channel 1, 2, 3, 4, or reference waveforms R1, 2, 3, or 4. Choose the +, –, x,
or ÷ operators.
4.
For example, you might calculate power
by multiplying a voltage waveform and a
current waveform.
Quick Tips
■
Math waveforms can be created from channel or reference waveforms or a combination of them.
■
Measurements can be taken on math waveforms in the same way as on channel waveforms.
■
Math waveforms derive their horizontal scale and position from the sources in their math expressions. Adjusting these
controls for the source waveforms also adjusts the math waveform.
■
You can zoom in on math waveforms using the inner knob of the Pan-Zoom control. Use the outer knob for positioning the
zoomed area. See Using Wave Inspector to manage long record length waveforms on page 135.
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Using FFT
An FFT function breaks down signals into component frequencies, which the oscilloscope uses to display a graph of the
frequency domain of a signal, as opposed to the oscilloscope's standard time domain graph. You can match these frequencies
with known system frequencies, such as system clocks, oscillators, or power supplies.
1.
Push Math.
2.
Push FFT.
Dual Wfm Math
FFT
Advanced Math Spectrum Math
(M) Label
2
FFT
128
3.
Push FFT Source on the side menu, if
needed, and turn multipurpose knob a to
select the source to use. Choices are:
channels 1, 2, 3, 4, reference waveforms
1, 2, 3, and 4.
4.
Push Vertical Scale on the side menu
repeatedly to select either Linear RMS or
dBV RMS.
5.
Push Window on the side menu
repeatedly to select the desired window.
Window choices are: Rectangular,
Hamming, Hanning, and BlackmanHarris.
6.
Push Horizontal on the side menu to
activate multipurpose knobs a and b to
pan and zoom the FFT display.
FFT Source
1
Vertical Units
Linear RMS
Window
Hanning
Horizontal
625kHz
1.25kHz/div
3
4
5
6
MDO4000C Series Oscilloscope User Manual
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7.
The FFT will appear on the display.
Quick Tips
■
Use short record lengths for faster instrument response.
■
Use long record lengths to lower the noise relative to the signal and increase the frequency resolution.
■
If desired, use the zoom feature along with the horizontal Position and Scale controls to magnify and position the FFT
waveform.
■
Use the default dBV RMS scale to see a detailed view of multiple frequencies, even if they have very different amplitudes.
Use the linear RMS scale to see an overall view of how all frequencies compare to each other.
■
The math FFT feature provides four windows. Each offers a trade-off between frequency resolution and magnitude
accuracy. The choice of which window to use depends upon what you want to measure and your source’s signal
characteristics. Use the following guidelines to select the best window:
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Table 7: Window choices
Window
Shape
Rectangular
The frequency resolution when using the Rectangular (a.k.a. boxcar or none) window is very
good, the spectral leakage is high, and amplitude accuracy is poor.
Use the Rectangular window for measuring transients or bursts where the signal levels
before and after the event are nearly equal. Also, use this window for equal-amplitude sine
waves with frequencies that are very close together, and for broadband random noise with a
relatively slow varying spectrum. This window is the best type for measuring the frequency
spectrum of non-repetitive signals, and measuring frequency components near DC.
Hamming
The frequency resolution when using the Hamming window is good (slightly better than
Hanning), the spectral leakage is moderate, and amplitude accuracy is fair.
Use the Hamming window for measuring sine, periodic, and narrow band random noise.
This window works well on transients or bursts where the signal levels before and after the
event are significantly different.
Hanning
The frequency resolution when using the Hanning (a.k.a. Hann) window is good, the
spectral leakage is low and amplitude accuracy is fair.
Use the Hanning window for measuring sine, periodic, and narrow band random noise. This
window works well on transients or bursts where the signal levels before and after the event
are significantly different.
Blackman-Harris
The frequency resolution when using the Blackman-Harris window is poor, the spectral
leakage is very low and amplitude accuracy is good.
Use the Blackman-Harris window for measuring predominantly single frequency waveforms
to look for higher order harmonics, or several moderately or widely spaced sinusoidal
signals.
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Using advanced math
The advanced math feature lets you create a custom math waveform expression that can incorporate active and reference
waveforms, measurements, and/or numeric constants. To use this feature:
1.
Push Math.
2.
Push Advanced Math.
Dual Wfm Math
FFT
Advanced
Math
Spectrum Math
(M) Label
2
3.
Use the side menu buttons to create
custom expressions.
4.
Push Edit Expression and use the
multipurpose knobs and the resulting
lower menu buttons to create an
expression. When done, push OK
Accept.
For example, to use Edit Expression to take the integral of a square wave:
1.
Push Clear on the lower menu.
2.
Turn multipurpose knob a to select Intg(.
3.
Push Enter Selection.
4.
Turn multipurpose knob a to select
channel 1.
5.
Push Enter Selection.
6.
Turn multipurpose knob a to select ).
7.
Push OK Accept.
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Using spectrum math
The spectrum math feature lets you create a math waveform by adding or subtracting frequency traces. Available for models with
option SA3 or SA6 installed.
1.
Push Math.
2.
Push Spectrum Math.
Dual Wfm Math
FFT
Advanced Math Spectrum Math
(M) Label
2
Use the side menu choices to construct your desired math trace.
3.
Push 1st Source and select the RF normal trace (RF:N), RF average trace (RF:A), RF maximum trace (RF:M), the RF
minimum trace (RF:m), or any of the reference memories with frequency domain information.
4.
Choose + or - as the operator.
5.
Choose the second source from the provided options.
The math waveform will appear on the display as a red trace.
6.
Push Label from the lower menu and use the resulting side menu choices to give your math trace an appropriate label.
NOTE. The oscilloscope will only complete the calculation if the units of measure of the source waveforms, when combined,
make logical sense.
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Using reference waveforms and traces
Create and store a reference waveform or trace. For example, you might do this to set up a standard against which to compare
other waveforms. To use the reference waveforms or traces:
NOTE. 5 M, 10 M, and 20 M reference waveforms are volatile and not saved when the oscilloscope power is turned off. To keep
these waveforms, save them to external storage.
1.
Push Ref R. This brings up the lower
reference menu.
2.
Use the resulting lower menu selections
to display or select a reference waveform
or trace.
(R1) | (On)
3-May-07
(R2) | (Off)
(R3) | (Off)
(R4) | (Off)
2
2
2
2
R1
3.
Push Vertical on the side menu and use
the multipurpose knobs to adjust the
vertical settings of the reference
waveform or trace.
4.
Push Horizontal on the side menu and
use the multipurpose knobs to adjust the
horizontal settings of the reference
waveform or trace.
5.
Push Edit Label and use the resulting
menus to define labels to display with the
reference waveforms and traces.
6.
Push Ref Details to read information
about the selected reference. Use this to
determine whether the reference is an
analog waveform or an RF trace.
7.
Push Save to File to store reference
information in external storage.
MDO4000C Series Oscilloscope User Manual
Vertical
0.00 div
100 mV/div
3
Horizontal
0.00 s
4.00 μs/div
4
Edit Labels
Ref Details
Save to File
5
6
7
133
Analyze waveform or trace data
TIP.
■
Selecting and Displaying Reference Waveforms. You can display all the reference waveforms at the same time. Push
the appropriate screen button to select a particular reference waveform.
■
Removing Reference Waveforms from the Display. To remove a reference waveform from the display, push R on the
front panel to access the lower menu. Then push the associated lower menu to turn it off.
■
Scaling and Positioning a Reference Waveform. You can position and scale a reference waveform independently from all
other displayed waveforms. Select the reference waveform and then adjust it with a multipurpose knob. You can do this
whether acquisition is running or not.
If a reference waveform is selected, scaling and repositioning of the reference waveform operates the same way whether
zoom is turned on or off.
■
134
Saving 10 M and 20 M Reference Waveforms. 10 M and 20 M reference waveforms are volatile and not saved when the
oscilloscope power is turned off. To keep these waveforms, save them to external storage.
MDO4000C Series Oscilloscope User Manual
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Using Wave Inspector to manage long record length waveforms
The Wave Inspector controls (zoom/pan, play/pause, marks, search) help you to efficiently work with long record length
waveforms. To magnify a waveform horizontally, turn the Zoom knob. To scroll through a zoomed waveform, turn the Pan knob.
The Pan-Zoom Control consists of:
1.
An outer pan knob.
2.
An inner zoom knob.
Zooming a waveform
1.
Rotate the inner knob on the Pan-Zoom control clockwise to zoom in on a selected portion of the waveform. Rotate the knob
counterclockwise to zoom back out.
2.
Alternatively, enable or disable the zoom mode by pushing the zoom button.
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3.
Examine the zoomed view of the waveform that appears on the larger, lower portion of the display. The upper portion of the
display will show the position and size of the zoomed portion in the waveform, within the context of the overall record.
Panning a waveform
While the zoom feature is on, you can use the pan feature to quickly scroll through the waveform. To use pan:
1.
Rotate the pan (outer) knob of the panzoom controls to pan the waveform.
Turn the knob clockwise to pan forward.
Turn it counterclockwise to pan
backwards. The further you turn the knob,
the faster the zoom window pans.
Playing and pausing a waveform
Use the play-pause feature to automatically pan through a waveform record. To use it:
136
1.
Enable the play-pause mode by pushing
the play-pause button.
2.
Adjust the play speed by turning the pan
(outer) knob further. The further you turn
it, the faster it goes.
3.
Change the play direction by reversing the direction that you are turning the pan knob.
4.
During play, up to a point, the more you turn the ring, the faster the waveform accelerates. If you rotate the ring as far as
it can go, the play speed does not change, but the zoom box quickly moves in that direction. Use this maximum rotation
feature to replay a portion of the waveform that you just saw and want to see again.
MDO4000C Series Oscilloscope User Manual
Analyze waveform or trace data
5.
Pause the play-pause feature by pushing
the play-pause button again.
Searching and marking waveforms
You can mark locations of interest in the acquired waveform. These marks help you limit your analysis to particular regions of the
waveform. You can mark areas of the waveform automatically, if they meet some special criteria, or you can manually mark each
item of interest. You can use arrow keys to jump from mark to mark (area of interest to area of interest). You can automatically
search and mark many of the same parameters that you can trigger on.
Search marks provide a way to mark a waveform region for reference. You can set marks automatically with search criteria. You
can search for and mark regions with particular edges, pulse widths, runts, logic states, rise/fall times, setup and hold, and bus
search types.
To manually set and clear (delete) marks:
1.
Move (the zoom box) to the area on the waveform where you want to set (or clear) a search mark by turning the pan
(outer) knob.
Push the next ( →) or previous (←) arrow button to jump to an existing mark.
2.
Push Set/Clear.
If no search mark is at the screen center, the oscilloscope will add one.
3.
Investigate your waveform by moving
from search mark to search mark. Use
the next ( →) or previous (←) arrow
button to jump from one marked location
to another, without adjusting any other
controls.
4.
Delete a mark. Push the next ( →) or previous (←) arrow button to jump to the mark you want to clear. To remove the
current, center-positioned mark, push Set/Clear. It works on both manually and automatically created marks.
To automatically set and clear (delete) search marks:
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1.
Push Search.
2.
Select the search type desired from the
lower menu.
The search menu is similar to the trigger
menu.
3.
Search
Off
Search Type
Edge
3
2
Source
1
Slope
Threshold
0.00V
From the side menu, turn on the search.
If desired, go to the second page of the
side menu and turn on the search mark
table. The search mark table shows a
time-stamped listing of each event.
138
4.
On the screen, hollow triangles show the
location of automatic marks and solid
triangles show the custom (user-defined)
locations. These appear on both normal
and zoomed waveform views.
5.
You can quickly investigate your
waveform by moving from search mark to
search mark with the next ( →) and
previous (←) arrow buttons. No other
adjustments are needed.
MDO4000C Series Oscilloscope User Manual
Analyze waveform or trace data
TIP.
■
You can copy trigger settings to search for other locations in your acquired waveform that meet the trigger conditions.
■
You can also copy search settings to your trigger.
■
Custom (User) marks are saved with the waveform when the waveform is saved and when the setup is saved.
■
Automatic search marks are not saved with the waveform when the waveform is saved. However, you can easily recapture
them by reusing the search function.
■
The search criteria are saved in the saved setup.
The Wave Inspector includes the following search capabilities:
Search
Description
Edge
Searches for edges (rising, falling or both) with a user-specified threshold level.
Pulse Width
Searches for positive or negative pulse widths that are >, <, =, or ≠ a user specified pulse width,
or are inside or outside of a range.
Timeout
Searches for the lack of a pulse. The signal stays above or below (or either above or below) a
set value for a set amount of time.
Runt
Searches for positive or negative pulses that cross one amplitude threshold but fail to cross a
second threshold before crossing the first again. Search for all runt pulses or only those with a
duration >, <, =, or ≠ a user specified time.
Logic
Search for a logic pattern (AND, OR, NAND, or NOR) across multiple waveforms with each
input set to either High, Low, or Don't Care. Search for when the event goes true, goes false, or
stays valid for >, <, =, or ≠ a user specified time. Additionally, you can define one of the inputs
as a clock for synchronous (state) searches.
Setup & Hold
Setup & Hold Search for violations of user specified Setup and Hold times.
Rise/Fall time
Search for rising and/or falling edges that are >, <, =, or ≠ a user specified time.
Bus
Parallel: Search for a binary or hex value.
I2C: Search for Start, Repeated Start, Stop, Missing Ack, Address, Data, or Address and Data.
SPI: Search for SS Active, MOSI, MISO, or MOSI & MISO RS-232, RS-422, RS-485, UART:
Search for Tx Start Bit, Rx Start Bit, Tx End of Packet, Rx
End of Packet, Tx Data, Rx Data, Tx Parity Error, Rx Parity Error.
CAN: Search for Start of Frame, Type of Frame (Data, Remote, Error, Overload), Identifier
(standard or extended), Data, Identifier and Data, End of Frame, or Missing Ack, Bit Stuffing
Error
LIN: Search for Synch, Identifier, Data, ID & Data, Wakeup Frame, Sleep Frame, Error
FlexRay: Search for Start of Frame, Type of Frame, Identifier, Cycle Count, Header Fields,
Data, ID & Data, End of Frame, Error
Audio: Search for Word Select or Data
Ethernet: Ethernet Serial Triggering and Analysis Module. Enables triggering on packet-level
information on 10BASE-T and 100BASETX 4 buses as well as analytical tools such as digital
views of the signal, bus views, packet decoding, search tools, and packet decode tables with
time-stamp information.
USB: Search for Sync, Reset, Suspend, Resume, End of Packet, Token (Address) Packet, Data
Packet, Handshake Packet, Special Packet, or Error
MIL-STD-1553: Search for Sync, Command, Status, Data, Time (RT/IMG), Error 152
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Auto-magnify
As you adjust the horizontal scale control to faster time/division settings, the MDO4000C Series automatically increases the
sample rate to keep acquiring the same record length in the shorter period of time. Eventually though, the oscilloscope hits the
maximum sample rate. Once the instrument is at its fastest sample rate, further changes to faster timebase settings cause the
oscilloscope to operate in Auto-magnify mode, where the oscilloscope shows the faster desired time/division setting and
continues to acquire the desired record length. The result is that the oscilloscope cannot show all of the acquired points within the
desired time/division setting.
Instead, the oscilloscope shows you only a portion of the entire record in the time-domain graticule. This feature provides you
with a way to magnify a portion of the record without having to use the smaller zoom screen display. This feature gives you the
maximum benefit of the sample rate / record length combination in your oscilloscope. With Auto-magnify, you have access to the
full record length at the maximum sample rate.
NOTE. Auto-magnify only comes on when the zoom feature is turned off.
1.
The entire acquisition is indicated by the
horizontal bar in the upper display.
2.
The portion of the acquisition shown in
the time domain graticule is shown within
the part of the upper display defined by
the brackets.
NOTE. If you are using the frequency domain and auto-magnify features at the same time, and if you move the spectrum time
outside of the portion of the acquisition shown in the graticule, then the orange bar in the time-domain display showing the
spectrum time will disappear, as will any activity in the frequency domain display.
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Limit and mask testing
Monitor an active input signal against a mask with the DPO4LMT Limit and Mask Test Module. Output pass or fail results.
The results can show whether the input signal is within the user-defined vertical and horizontal bounds of the mask. You can
create your own mask or recall a mask from a file. To set up and run a limit or mask test, do the following:
1.
Select or create the mask.
2.
Set up the test.
3.
Run the test and view the results.
Create or select the mask
The two mask types you can create or select are: limit test and custom.
Create a limit test mask.
1.
Push the front panel Default Setup button.
2.
Connect your probe from your oscilloscope to the mask source.
3.
Push the front panel Autoset button.
4.
Push the front panel Test button.
5.
Push Application on the lower menu. Turn Multipurpose a to select Limit/Mask Test from the menu.
6.
Push Select Mask on the lower menu and, from the resulting side menu, select Limit Test.
7.
Push Create Limit Mask on the lower menu.
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8.
On the resulting side menu, push Source Channel and turn Multipurpose a to choose the waveform to use as the template
for the limit test.
9.
Push Horizontal ±Limit to set the mask horizontal limits. The units are referenced to graticule divisions, where one major
division contains 1,000 milli-divisions (mdiv).
10. Push Vertical ±Limit to set the mask vertical limits. The units are referenced to graticule divisions, where one major division
contains 1,000 millidivisions (mdov).
11. Push OK Create Limit Mask to make the mask in the oscilloscope.
Create a custom mask from a text file.
1.
Push the front panel Test button.
2.
Push Application on the lower menu. Turn Multipurpose a to select Limit/Mask Test from the menu.
3.
Push Set Up Mask on the lower menu.
4.
From the resulting side menu, push Recall Mask from File.
Your mask text file should have an “.msk” file name extension and use the following format:
:REM "Initialize the custom mask"
:MASK:CUSTom INIT
:REM "Mask Setup Information"
:MASK:USER:LABEL "Custom Mask of STS-1"
:MASK:USER:AMPLITUDE 1.0000
:MASK:USER:VSCALE 200.0000E-3
:MASK:USER:VPOS -2.5000
:MASK:USER:VOFFSET 0.0E+0
:MASK:USER:HSCALE 4.0000E-9
:MASK:USER:HTRIGPOS 318.1000E-3
:MASK:USER:WIDTH 29.5500E-9
:MASK:USER:RECORDLENGTH 1000
:MASK:USER:TRIGTOSAMP 7.2750E-9
:REM "Mask Points are Defined in Volts and Seconds"
:REM "Points in a segment must be defined in counter clockwise order"
:REM "A single point at 0,0 indicates an empty segment"
:MASK:USER:SEG1:POINTS -7.5000E-9,1.5000,-7.5000E-9,100.0000E-3,-5.1656E9,100.0000E-3,-1.3536E-9,500.0000E-3,-1.3536E-9,1.2000,7.2750E-9,1.1000,15.90
36E9,1.2000,15.9036E-9,500.0000E-3,19.7156E-9,100.0000E-3,22.0500E-9,100.0000E3,22.0500E-9,1.5000
:MASK:USER:SEG2:POINTS
-7.5000E-9,-500.0000E-3,22.0500E-9,-500.0000E-3,22.0500E-9,-100.0000E-3,13.42
14E-9,-200.0000E-3,13.4214E-9,500.0000E-3,11.6780E-9,800.0000E3,7.2750E-9,900.0000E-3,2.8720E-9,800.0000E-3,1.1286E-9,500.0000E-3,1.1286E-9
,-200.0000E-3,-7.5000E-9,-100.0000E-3
:MASK:USER:SEG3:POINTS 0.0E+0,0.0E+0
:MASK:USER:SEG4:POINTS 0.0E+0,0.0E+0
:MASK:USER:SEG5:POINTS 0.0E+0,0.0E+0
:MASK:USER:SEG6:POINTS 0.0E+0,0.0E+0
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:MASK:USER:SEG7:POINTS 0.0E+0,0.0E+0
:MASK:USER:SEG8:POINTS 0.0E+0,0.0E+0
Create a custom mask via a remote interface. To use remote interface commands to create and edit a mask, see the
Programmer Manual on the Tektronix website.
Set up the test
To set up the limit or mask test, connect the test source to the oscilloscope. For a limit test, set the test source horizontal and
vertical settings to the same values that were used to create the limit test mask. Push Set Up Test on the lower menu and set the
following:
Setting
Description
Source Channel
Select the channel to be tested
Violation Threshold
Set the number of violations that can occur before a test status
is considered failed.
Stop After Waveform
Set the test to stop after a set number of waveforms.
Stop After Time
Set the test to stop after a set amount of time elapses.
Select Action on Failure
Set how the oscilloscope responds to test failure. You can set
multiple actions like:
Select Action on Test Completion
■
Stop acquisition
■
Save waveform to file
■
Save screen image to file
■
Print screen image
■
Aux out pulse
■
Set a remote interface service request (SRQ)
Set how the oscilloscope will respond to test completion. You
can set multiple actions like:
■
Aux out pulse
■
Set a remote interface service request (SRQ)
Pre-Test Delay
Set a delay before starting a test.
Repeat Test
Set On for the test to repeat when it has run the minimum
number of waveforms or the minimum amount of time.
Set Off tor the test to run a single time and not repeat.
Mask Polarity
Mask Polarity Set the mask polarity to use during the test.
When Both is selected, the test will run with Normal polarity for
about half of the expected number of waveforms or amount of
time and then will run with Inverted polarity for the remained of
the test.
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Analyze waveform or trace data
Run the test and view the results
1.
Push Run Test on the lower menu to start and stop the test.
2.
Push Show Results on the lower menu and use the resulting side menu to select whether to show basic or more detailed
results. You can also reset the results.
TIP.
144
■
Use Average acquisition mode to create a smoother, cleaner limit test mask.
■
If you want to re-use the mask later, save it to a file by selecting Set Up Mask from the lower menu and Save Mask to File
from the resulting side menu.
■
To simplify the setup of the test source, save the oscilloscope setup so that later you can quickly reload the settings to
correctly display the test source for limit testing.
■
Have the mask automatically re-scale with the source channel setting changes by selecting Set Up Mask on the lower
menu and Lock to Source as On on the resulting side menu.
■
The math waveform is not available when using mask testing.
MDO4000C Series Oscilloscope User Manual
Analyze waveform or trace data
Making video tests
Trigger on and display video signals. Do this with standard, built-in video test tools. To use this application:
1.
Push Test.
2.
Turn Multipurpose a to select Video Picture.
3.
Use the bottom menu buttons to set up the desired video test.
Choose among:
■
Display on/off
■
Standard: NTSC or PAL
■
Contrast/update rate
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Analyze waveform or trace data
146
■
Odd/Even/Interlaced
■
Source channel
■
Location on the screen to display the results
MDO4000C Series Oscilloscope User Manual
Analyze waveform or trace data
Taking automated power measurements
Acquire, measure, and analyze power signals with the DPO4PWR Power Analysis Module. To use this application:
1.
Push Test.
2.
Turn multipurpose knob a to select
Power Analysis.
3.
Push Analysis.
Application
Analysis
None
2
4.
Use the side menu buttons to select the
desired analysis function.
Choose among power quality, switching
loss, harmonics, ripple, modulation, and
safe operating area, and deskew. See the
Power Analysis Modules User Manual on
tek.com for more information.
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Analyze waveform or trace data
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Save and recall information
The oscilloscope provides permanent storage for setups, waveforms, and screen images. Use the internal storage of the
oscilloscope to save setup files and reference waveform data.
Use external storage, such as USB drives or network drives, to save setups, waveforms, and screen images. Use the external
storage to carry data to remote computers for further analysis and for archiving.
External file structure
If you are saving information to external storage, select the appropriate menu (such as the To File side menu to save setups and
waveforms) and turn multipurpose knob a to scroll through the external file structure.
■
E: is the USB memory device plugged into the first (left) USB port on the front of the oscilloscope
■
F: is the USB memory device plugged into the second (right) USB port on the front of the oscilloscope
■
G: and H: are the USB memory devices plugged into the USB ports on the rear of the oscilloscope
■
I through Z are network storage locations
Use multipurpose knob a to scroll through the list of files. Push Select on the front panel to open and close folders.
Naming your file
The oscilloscope gives all files it creates a default name in the following format:
■
tekXXXXX.set for setup files where XXXXX is an integer from 00000 to 99999
■
tekXXXXX.png, tekXXXXX.bmp, or tekXXXXX.tif for image files
■
tekXXXXYYY.csv for spreadsheet files or tekXXXXYYY.isf for internal format files
For waveforms, the XXXX is an integer from 0000 to 9999. The YYY is the channel of the waveform, and can be one of the
following:
■
CH1, CH2, CH3, or CH4 for the analog channels
■
D00, D01, D02, D03, and so on through D15 for the digital channels
■
MTH for a math waveform
■
RF1, RF2, RF3, or RF4 for reference memory waveforms
■
ALL for a single spreadsheet file containing multiple channels when you select Save All Waveforms
For RF traces (models with option SA3 or SA6 installed), XXXX is an integer from 0000 to 9999. The YYY defines the trace and
can be one of the following:
■
NRM for a normal trace
■
AVG for an average trace
■
MAX for a maximum hold trace
■
MIN for a minimum hold trace
■
AVT for an amplitude versus time trace
■
FVT for a frequency versus time trace
■
PVT for a phase versus time trace
■
TIQ for a baseband I & Q file
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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
Save and recall information
NOTE. Analog, digital, and RF waveforms and traces and those waveforms and traces derived from them (such as math and
reference) can be saved to an ISF file. When saving all channels in ISF format, a group of files will be saved. Each will have the
same value for XXXX, but the YYY values will be set to the different channels that were turned on when the Save All Waveforms
operation was performed.
The XXXX value will automatically increment each time you save a file of the same type. For example, the first time you save a
file, that file is named tek00000. The next time you save the same type of file, the file will be named tek00001.
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Editing file directory reference waveform or instrument setup names
Give files descriptive names that you can recognize at a later date. To edit file names, directory names, reference waveform and
instrument setup labels:
1.
Push Save / Recall Menu.
2.
Push Save Screen Image, Save
Waveform, or Save Setup.
3.
For waveform or setup files, enter the file
manager by pushing the appropriate side
menu button.
4.
Turn multipurpose knob a to scroll
through the file structure. See External
file structure on page 149.
5.
Push Select to open or close file folders.
6.
Push Edit File Name.
Save Screen
Image
Save Waveform
Save Setup
2
2
2
To File
Recall
Waveform
Recall Setup
Assign
Save | to
Setup
File Utilities
3
Edit the file name the same way you edit
labels for channels.
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Save and recall information
7.
152
Push the Menu Off button to cancel the
save operation, or push OK Save on the
side menu to complete the operation.
MDO4000C Series Oscilloscope User Manual
Save and recall information
Saving a screen image
A screen image consists of a graphical image of the oscilloscope screen. This is different from waveform data, which consists of
numeric values for each point in the waveform. To save a screen image:
1.
Push Save / Recall Menu.
Do not yet push the Save button.
2.
Push Save Screen Image on the lower
menu.
Save Screen
Image
Save Waveform
Save Setup
Recall
Waveform
Recall Setup
Assign
Save | to
Setup
File Utilities
2
Save Screen
Image
3.
Push File Format on the side menu to
select among: .tif, .bmp, and .png
formats.
4.
Push Orientation to select between
saving the image in a landscape
(horizontal) and a portrait (vertical)
orientation.
5.
Push Ink Saver to turn the Ink Saver
mode on or off. When on, this mode
provides a white background.
6.
Push Edit File Name to create a custom
name for the screen image file. Skip this
step to use a default name.
7.
Push OK Save Screen Image to write
the image to the selected media.
MDO4000C Series Oscilloscope User Manual
File Format
.png
Orientation
Ink Saver
On | Off
Edit File Name
OK Save
Screen Image
3
4
5
6
7
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Save and recall information
Saving and recalling waveform and trace data
Waveform and trace data consists of the numeric values for each point in the waveform or trace. It copies the data, as opposed
to a graphical image of the screen. To save the current waveform or trace data or to recall previously stored waveform or trace
data:
1.
Push Save / Recall Menu.
2.
Push Save Waveform or Recall
Waveform on the lower menu.
Save Screen
Image
Save Waveform
2
Save Setup
Recall
Waveform
Recall Setup
Assign
Save | to
Waveform
File Utilities
2
NOTE. The oscilloscope can save digital waveforms to .csv files, not reference memories. The oscilloscope cannot recall
digital waveforms.
NOTE. The oscilloscope can save, but not recall, RF acquisitions as .TIQ files. You can use .TIQ files with Tektronix SignalVu
Vector Signal Analysis software.
3.
Rotate multipurpose knob a and, on the side menu, select one of the displayed waveforms or traces. Alternatively, select
All Displayed Waveforms.
When saving RF trace data, you can select to save it as either the standard display data or as baseband I and Q data
(.TIQ files). Use the I and Q data with Tektronix SignalVu Vector Signal Analysis software.
4.
Rotate multipurpose knob b and select the location to save the waveform or trace data to or to recall it from.
Save the information externally to a file on a USB drive or mounted network drive. Alternatively, save the information
internally to one of the four reference files.
5.
154
Push File Details to save to a USB or network drive.
MDO4000C Series Oscilloscope User Manual
Save and recall information
Saving a waveform to file
If you select a channel as Source and File as the destination, the File Details option will appear on the side menu. When you
push File Details on the side menu, the oscilloscope changes the side menu contents. The following table describes these side
menu items for saving data to a mass storage file.
Side menu button
Description
Instrument Specific File Format Sets the oscilloscope to save data from analog, digital, or RF channels (and math and reference
(.ISF)
waveforms derived, where possible, from those channels), in Instrument Specific Format (.isf)
format. This format is the fastest to write. It also creates the smallest-sized file.
Use this format if you intend to recall an analog waveform or RF trace to reference memory for
viewing or measuring.
Spreadsheet file format (.csv)
Sets the oscilloscope to save data as a comma-separated data file that is compatible with
popular spreadsheet programs.
Analog and RF data stored in this file format can also be recalled to reference memory.
Saving a waveform or trace to reference memory
To save a waveform or trace to nonvolatile memory inside the oscilloscope, push the Save Waveform screen button, select the
waveform that you want to save, and then select one of the four reference waveform locations.
Saved waveforms contain only the most recent acquisition. Gray-scale information, if any, is not saved.
NOTE. 5M, 10 M, and 20 M reference waveforms are volatile and not saved when the oscilloscope power is turned off. To keep
these waveforms, save them to external storage.
Displaying a reference waveform
To display a waveform stored in nonvolatile memory:
1.
Push Ref R.
2.
Push R1, R2, R3, or R4.
(R1) | (On)
(R2) | (Off)
(R3) | (Off)
(R4) | (Off)
2
2
2
2
If you push the side menu Ref Details, you can read whether the reference holds analog waveform or RF trace information.
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Save and recall information
Removing a reference waveform from the display
To remove a reference waveform from the display:
1.
Push Ref R.
2.
Push R1, R2, R3, or R4 on the lower
menu to remove the reference waveform
or trace from the display.
(R1) | (On)
(R2) | (Off)
(R3) | (Off)
(R4) | (Off)
2
2
2
2
The reference waveform is still in nonvolatile memory and can be displayed again with another push of the button.
NOTE. 5 M, 10 M, and 20 M reference waveforms are volatile and not saved when the oscilloscope power is turned off. To
keep these waveforms, save them to external storage.
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Save and recall information
Saving and recalling setups
Setup information includes acquisition information, such as vertical, horizontal, trigger, cursor, and measurement information. It
does not include communications information, such as GPIB addresses. To save the setup information:
1.
Push Save / Recall Menu.
2.
Push Save Setup or Recall Setup on the
lower menu.
Save Screen
Image
Save Waveform
Save Setup
2
Recall
Waveform
Recall Setup
Assign
Save | to
Setup
File Utilities
2
Save Setup
3.
From the resulting side menu, select the
location to save the setup to or to recall it
from.
To save setup information to one of the
ten internal setup memories in the
oscilloscope, push the appropriate side
menu button.
To save setup information to a USB or
network drive, push the To File button.
To File
3
Edit Labels
To Setup 1
To Setup 2
4.
If you are saving information to a USB or
network drive, turn multipurpose knob a
to scroll through the file structure. See
External file structure on page 149.
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Save and recall information
Push Select to open or close file folders.
Push the Menu Off button to cancel the save
operation, or push Save to Selected File on
the side menu to complete the operation.
5.
Save the file.
Save to
Selected File
5
Quick Tips
■
158
Recalling the Default Setup. Push Default Setup on the front panel to initialize the oscilloscope to a known setup. See
Using the default setup on page 48.
MDO4000C Series Oscilloscope User Manual
Save and recall information
Saving with one button push
After you have defined the save/recall parameters with the Save/Recall Menu button and menu, you can save files with a single
push of the Save button. For example, if you have defined the save operation to save waveform data to a USB flash drive, then
each push of the Save button will save current waveform data to the defined USB flash drive.
1.
To define the Save button behavior, push
Save/Recall Menu.
2.
Push Assign Save to ....
Save Screen
Image
Save Waveform
Save Setup
Recall
Waveform
Recall Setup
Assign
Save | to
Setup
File Utilities
2
Assign Save to
3.
Push the side menu button corresponding
to the items or items you wish to save
when you push the Save button.
Screen Image
3
Waveform
Setup
Image,
Waveform, and
Setup
4.
From now on, when you push Save the
oscilloscope will perform the action that
you just specified rather than requiring
you to navigate through the menus each
time.
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Save and recall information
Managing drives directories and files
You can manage drives, directories, and files from the oscilloscope user interface.
1.
Push Save/Recall Menu.
2.
Push File Utilities.
Save Screen
Image
Save Waveform
Save Setup
Recall
Waveform
Recall Setup
Assign
Save
|
to
Setup
File Utilities
2
Select the desired file operation from the side menus. You can:
■
Create a new folder
■
Delete a highlighted directory, or file
■
Copy a highlighted drive, directory or file
■
Paste a previously copied drive, directory, or file
■
Mount or unmount a networked or local USB drive
■
Rename a highlighted drive, directory, or file
■
Format a highlighted drive
Mounting a network drive
Mount a network storage device, such as a PC or a file server, to save setups, waveforms, and screen images directly to the
drive or to recall waveforms or setups from the drive.
To save to or recall files from a network drive, you must first connect your oscilloscope to the network.
NOTE. Consult your network administrator for information related to your network.
After the network connection has been established, do the following:
1. Push Save/Recall Menu on the front panel.
2. Push File Utilities on the lower menu and, from the resulting side menu, select – more – 1 of 2. Then select Mount.
3. From the resulting side menu, set the following:
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Save and recall information
Setting
Description
Drive Letter
Select from I: to Z:
Server Name or IP Address
Use a USB keyboard or the on-screen interface to enter the server name or IP address.
Path
Use a USB keyboard or the on-screen interface to enter the shared file path.
For example, to mount an MS Windows PC directory named “C:\Example”, enter “C$\Example”.
The dollar sign enables sharing. No colon is needed.
User Name
If necessary, use a USB keyboard or the on-screen interface to enter the user name.
User Password
If necessary, use a USB keyboard or the on-screen interface to enter the user password. The
oscilloscope only displays “*”'s as you type the password. They are erased from the screen after
OK Accept is pushed.
NOTE. Ensure that file sharing is enabled for the network location.
4. Push OK Accept.
NOTE. To unmount a network or local USB drive, push Save/Recall Menu on the front panel, push File Utilities on the lower
menu, push – more – 1 of 2 on the side menu, and Unmount items.
NOTE. Any network locations that were mounted when the oscilloscope was powered down will be automatically remounted
when the oscilloscope is powered up. Unmount any network location that you do not want to automatically remount on power up.
NOTE. When the USB drive is removed from the system without unmounting, you will receive the scan message upon inserting
this USB flash drive into a computer. To avoid this, it is recommended that you properly unmount the USB drive before removing
it from the oscilloscope.
Printing a hard copy
To print an image of what appears on the oscilloscope screen, do the following procedure.
Connect a printer to your oscilloscope
Connect a non-PictBridge printer to a USB port on the rear or front panel of the oscilloscope. Alternatively, connect a PictBridge
printer to the USB device port on the rear panel, or hook up a networked printer through the Ethernet port.
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Save and recall information
Set up print parameters
To set up the oscilloscope to print hard copies:
1.
Push Utility.
2.
Push Utility Page.
3.
Turn Multipurpose a and select Print.
4.
Push Select Printer if you are changing the default printer.
Turn Multipurpose a to scroll through the list of available printers.
Push Select to choose the desired printer.
To add a non-PictBridge USB printer to the list, plug the printer into a USB host port. The oscilloscope will automatically
recognize most printers.
To set up a PictBridge USB printer, refer to the next topic.
To add an Ethernet printer to the list, refer to that topic. Printing over ethernet on page 163
5.
Select the image orientation (portrait or landscape).
6.
Choose Ink Saver On or Off. The On selection will print out a copy with a clear (white) background.
Printing to a pictbridge printer
To set up the oscilloscope to print to a PictBridge printer:
162
1.
Push Utility.
2.
Push Utility Page.
3.
Turn Multipurpose a and select I/O.
4.
Push USB.
5.
Push Connect to PictBridge Printer.
MDO4000C Series Oscilloscope User Manual
Save and recall information
Printing over ethernet
To set up the oscilloscope to print over Ethernet:
1.
Connect an Ethernet cable to the rear-panel Ethernet port.
2.
Push Utility.
3.
Push Utility Page.
4.
Turn the Multipurpose a knob and select Print Setup.
5.
Push Select Printer.
6.
Push Add Network Printer.
7.
Turn Multipurpose a to scroll through the list of letters, numbers, and other characters to find the first character in the
printer that you want to enter.
If you are using a USB keyboard, use the arrow keys to position the insertion point and type in the printer name.
8.
Push Select or Enter Character to let the oscilloscope know that you have picked the proper character to use.
You can use the lower menu buttons to edit the name, as needed.
9.
Continue scrolling and pushing Select until you have entered all the desired characters.
10. Push the down arrow key to move the character cursor down a row to the Server Name field.
11. Turn the Multipurpose a knob and push Select or Enter Character as often as needed to enter the name.
12. If desired, push the down arrow key to move the character cursor down a row to the Server IP Address: field.
13. Turn Multipurpose a and push Select or Enter Character as often as needed to enter the name.
14. When done, push OK Accept.
NOTE. If you have multiple printers connected to the oscilloscope at the same time, the oscilloscope will print to the printer listed
in the Utility> Utility Page> Print Setup> Select Printer menu item.
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Save and recall information
E mail printing
To set up the oscilloscope to print via e-mail to e-mail enabled printers:
1.
Connect an Ethernet cable to the rear-panel Ethernet port.
2.
Push Utility.
3.
Push Utility Page.
4.
Turn Multipurpose a and select Print Setup.
5.
Push Select Printer.
6.
Push Add E-Mail Printer.
7.
Turn Multipurpose a to scroll through the list of letters, numbers, and other characters to find the first character in the name
that you want to enter.
If you are using a USB keyboard, use the arrow keys to position the insertion point and type in the printer name.
NOTE. There is a single set of SMTP server settings saved for both the e-mail printer and for Act on Event e-mail
notification (Test > Application > Act on Event > Actions > E-mail Notification > Configure E-mail). If you modify the
SMTP settings in one of these two locations, they will be similarly modified in the other location.
8.
Push Select or Enter Character to let the oscilloscope know that you have picked the proper character to use.
You can use the lower menu buttons to edit the name, as needed.
9.
Continue scrolling and pushing Select until you have entered all the desired characters.
10. Push the down arrow key to move the character cursor down to more rows to fill out.
11. Turn the Multipurpose a knob and push Select or Enter Character as often as needed to enter the name.
12. If desired, push the down arrow key to move the character cursor down to added rows.
13. Turn Multipurpose a and push Select or Enter Character as often as needed to enter the name.
14. When done, push OK Accept.
Printing with one button push
Once you have connected a printer to your oscilloscope and set up print parameters, you can print current screen images with a
single push of a button:
Push the printer icon button in the lower left corner of the front panel.
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Save and recall information
Using oscilloscope security features
Erasing oscilloscope memory
The MDO4000C provides optional enhanced security to enable password protected control of turning on/off all instrument ports.
You can erase all setup and waveform information saved in the nonvolatile oscilloscope memory with the TekSecure function. If
you have acquired confidential data on your oscilloscope, you may want to execute the TekSecure function before you return the
oscilloscope to general use. The TekSecure function:
■
Replaces all waveforms in all reference memories with null values
■
Replaces the current front panel setup and all stored setups with the default setup
■
Displays a confirmation or warning message, depending on whether the verification is successful or unsuccessful
With the MDO4SEC option, you can also turn the I/O ports on or off and turn the firmware upgrade capability on or off.
Using TekSecure without the MDO4SEC option installed
1.
Push Utility.
2.
Push Utility Page.
5.
Push OK Erase Setup and Ref Memory
on the side menu.
OK
Erase Setup &
Ref Memory
5
To cancel the procedure, push Menu Off.
6.
Power off the oscilloscope, and then
power it back on to complete the process.
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Save and recall information
Using TekSecure with the MDO4SEC option installed
1.
Push Utility.
2.
Push Utility Page.
3.
Turn multipurpose knob a and select Security.
4.
Push TekSecure Erase Memory.
Utility Page
2
Utility Page
Security
TekSecure
Erase Memory
Security
password
Firmware
Upgrades
Enabled
I/O Ports
Enabled
3
4
6
7
8
OK
Erase Setup &
Ref Memory
5
5.
Push OK Erase Setup and Ref Memory
on the side menu.
6.
Push Security Password. Use Multipurpose a and the bottom menu to enter a password.
7.
Push Firmware Upgrades. Read the on-screen warnings. To disable the ability to load new firmware into the
oscilloscope, push OK Disable Upgrades on the side menu.
8.
Push I/O ports. Read the on-screen warnings. To disable all USB and Ethernet ports on the oscilloscope, push OK
Disable All Ports on the side menu.
To cancel the procedure, push Menu Off.
9.
166
Power off the oscilloscope, and then
power it back on to complete the process.
MDO4000C Series Oscilloscope User Manual
Arbitrary/Function Generator
The MDO4000C contains an optional integrated arbitrary/function generator (AFG) (option MDO4AFG). This is useful for
simulating signals within a design or adding noise to signals to perform margin testing.
The function generator provides output of predefined waveforms up to 50 MHz. Choose between sine, square, pulse, ramp/
triangle, DC, noise, sin(x)/x (Sinc), Gaussian, Lorentz, exponential rise/fall, Haversine and cardiac signals.
The AFG can generate up to 131,072 points of an arbitrary waveform. You can create the waveform from any of the four internal
ARB memories, the four (or two) analog channels, the four (or two) reference waveforms, the math waveform or the 16 digital
channel waveforms. You can also use a .CSV (spreadsheet) file stored externally or a predefined template.
You can modify your arbitrary waveform via an on-screen editor and then replicate it out of the generator. For more involved
waveform manipulation, you can use Tektronix’ ArbExpress PC-based waveform creation and editing software.
How to access the AFG
To access the AFG output, connect your cable to the port marked AFG OUT in the back of the oscilloscope.
To see the output of the AFG, connect the other end of the cable to one of the input channels on the front of the oscilloscope.
Push the front-panel AFG button to turn the AFG output on and off.
MDO4000C Series Oscilloscope User Manual
167
Arbitrary/Function Generator
The button lights up when the output is on. The light goes out when it is off. The On-Off status is always off when you recall an
instrument setup. The AFG will always come up in the off state when you turn the oscilloscope power on.
168
MDO4000C Series Oscilloscope User Manual
Using application modules
Using application modules
Optional application module packages extend the capability of your oscilloscope. See Application module free trial on page 17
and Installing an application module on page 17.
Refer to the MDO3000 and MDO4000 Series Application Module Installation Instructions that came with your application module
for instructions on installing and testing an application module. Some modules are described in the following list. Additional
modules may be available. Contact your Tektronix representative or visit our Web
■
The DPO4BND Application Module Bundle adds support for DPO4AERO, DPO4AUDIO, DPO4AUTO, DPO4COMP,
DPO4EMBD, DPO4ENET, DPO4USB, DPO4LMT, DPO4PWR, and DPO4VID.
■
The DPO4AERO Aerospace Serial Triggering and Analysis Module adds triggering and analysis on MILSTD-1553 buses.
■
The DPO4AUDIO Audio Serial Triggering and Analysis Module adds triggering and analysis on I2S, Left Justified (LJ),
Right Justified (RJ), and TDM buses.
■
The DPO4AUTO Automotive Serial Triggering and Analysis Module adds triggering and analysis on packet level
information in serial buses used in automotive designs (CAN and LIN), as well as analytical tools to help you efficiently
analyze your serial bus. These include digital views of the signal, bus views, packet decoding, search tools, and event
tables with timestamp information.
■
The DPO4AUTOMAX FlexRay, CAN, and LIN Serial Triggering and Analysis Module offers the features of the
DPO4AUTO Module plus FlexRay serial bus support.
■
The DPO4COMP Computer Serial Triggering and Analysis Module adds triggering and analysis on byte or packet level
information in RS-232, RS-422, RS-485, and UART buses, and analytical tools to help you efficiently analyze your serial
bus. These include digital views of the signal, bus views, packet decoding, search tools, and event tables with timestamp
information.
■
The DPO4EMBD Embedded Serial Triggering and Analysis Module adds triggering and analysis on packet level
information in serial buses used in embedded designs (I2C and SPI), as well as analytical tools to help you efficiently
analyze your serial bus. These include digital views of the signal, bus views, packet decoding, search tools, and event
tables with timestamp information.
■
The DPO4ENET Ethernet Serial Triggering and Analysis Module adds triggering on packet-level information on
10BASE-T and 100BASETX 4 buses as well as analytical tools such as digital views of the signal, bus views, packet
decoding, search tools, and packet decode tables with time-stamp information.
Signal Inputs - Any Ch1 - Ch4, Math, Ref1 - Ref4
Recommended Probing - 10BASE-T: Single ended or differential; 100BASE-TX: Differential
NOTE. ≥350 MHz bandwidth models are recommended for 100BASE-TX.
■
The DPO4LMT Limit and Mask Test Module adds testing acquired waveforms against a comparison waveform with userdefined horizontal and vertical limits or against telecom standard masks or custom masks.
NOTE. ≥350 MHz bandwidth models are recommended for Telecomm standards >55 Mb/s.
1 GHz bandwidth models are recommended for high-speed (HS) USB.
MDO4000C Series Oscilloscope User Manual
169
Using application modules
■
The DPO4PWR Power Analysis Module adds measurements of power quality, switching loss, harmonics, ripple,
modulation, safe operating area, and slew rate (dV/dt and dI/dt).
■
The DPO4USB USB 2.0 Serial Triggering and Analysis Module adds triggering and analysis on USB low-speed, fullspeed, and high-speed buses.
NOTE. 1 GHz bandwidth models are required for high-speed (HS) USB.
170
■
The DPO4VID Extended Video Module adds triggering on a variety of standard HDTV signals, as well as on custom (nonstandard) bilevel and trilevel video signals with 3 to 4,000 lines.
■
The MDO4TRIG Advanced RF Triggering Module enables triggering with RF power as a source for Pulse Width, Timeout,
Runt, Logic, and Sequence triggers.
MDO4000C Series Oscilloscope User Manual
Appendix A: MDO4000C Series specifications
Please see the MDO4000C Series Oscilloscope Specifications and Performance Verification Technial Reference on the
Tektronix website.
MDO4000C Series Oscilloscope User Manual
171
Appendix A: MDO4000C Series specifications
172
MDO4000C Series Oscilloscope User Manual
Appendix B: TPP0500B and TPP1000 500 MHz and 1 GHz
10X passive probes information
Operating information
The TPP0500B and TPP1000 10X Passive Probes are compact passive probes with 10X attenuation that are designed for use
with Tektronix MDO4000C Series oscilloscopes.
The probes have no user- or Tektronix-serviceable parts.
Connecting the probe to the oscilloscope
Connect the probe as shown in the illustrations below.
Compensating the probe with the MDO4000C series oscilloscope
See Compensating a TPP0500B or TPP1000 passive voltage probe on page 14.
MDO4000C Series Oscilloscope User Manual
173
Appendix B: TPP0500B and TPP1000 500 MHz and 1 GHz 10X passive probes information
Standard accessories
The standard accessories included with the probe are shown below.
WARNING. To avoid electric shock when using the probe or accessories, keep fingers behind the finger guard of probe body and
accessories.
To reduce risk of shock, when using the probe on floating measurements, ensure the reference lead accessories are fully mated
before connecting the probe to the circuit under test.
Item
Description
Hook tip
Press the hook tip onto the probe tip and then clamp the hook onto the circuit
Reorder Tektronix part number 013-0362-XX
Micro Hook tip
Use this tip to access test points in tight spaces. Press the hook tip onto the probe tip
and then clamp the hook onto the circuit
Reorder Tektronix part number 013-0363-XX
Rigid tip
This (gray, not shown) tip is included with your probe, but is not pre-installed.
Reorder Tektronix part number 206-0610-XX
Pogo tip
This (white) tip is pre-installed on the probe.
This spring-loaded tip allows compliant testing of circuit boards. The probe tip
retracts slightly when pressure is applied to it and then springs back into place.
Reorder Tektronix part number 206-0611-XX
Ground lead, with alligator clip
Secure the lead to the probe head ground and then to your circuit ground.
Reorder Tektronix part number 196-3521-XX
174
MDO4000C Series Oscilloscope User Manual
Appendix B: TPP0500B and TPP1000 500 MHz and 1 GHz 10X passive probes information
Item
Description
Ground springs
Attach the spring to the ground band on the probe tip to take measurements on test
points that have ground connections nearby (<0.75 in, std; 0.375 in, short).
Reorder Tektronix part numbers:
016-2028-XX (long, 2 ea.)
016-2034-XX (short, 2 ea.)
Universal IC cap
Use this cap to prevent shorting the probe tip between IC pins.
Press the cap on the probe tip until it snaps on, and then spin the cap to expose the
probe tip toward the IC lead.
Reorder Tektronix part number 013-0366-xx
Color bands
Use these bands to identify the oscilloscope channel at the probe head.
Reorder Tektronix part number 016-06333-xx (5 pairs)
Optional accessories
The following accessories can be ordered for your probe.
Accessory
Tektronix part number
Ground Lead, Clip-on, 6 in
196-3198-xx
Ground Lead, Alligator, 12 in
196-3512-xx
MicroCKT Test Tip
206-0569-xx
Circuit Board Test Point/PCB Adapter
016-2016-xx
Chassis-mount probe test jack
131-4210-xx
Wire, spool, 32 AWG
020-3045-xx
MDO4000C Series Oscilloscope User Manual
175
Appendix B: TPP0500B and TPP1000 500 MHz and 1 GHz 10X passive probes information
Replacing the probe tip
Order Tektronix part number 206-0610-xx for rigid tip replacement, or order part number 206-0611–xx for pogo pin replacement.
Specifications
Table 8: Electrical and mechanical specifications
Characteristic
TPP0500B
TPP1000
Bandwidth (–3 dB)
500 MHz
1 GHz
System rise time (typical)
<700 ps
<450 ps
System input capacitance
Rigid tip: 3.9 pF ±0.3 pf
Pogo pin tip: 5.1 pf ±0.5 pf
System attenuation accuracy
10:1 ±2.2%
Probe series resistance @DC
9.75 MΩ ±0.5%
System input resistance @DC
10 MΩ ±2%
Propagation delay
~5.67 ns
Maximum input voltage
300 VRMS CAT II
Cable length
1.3 m, ±3 cm
Performance graphs
176
MDO4000C Series Oscilloscope User Manual
Appendix B: TPP0500B and TPP1000 500 MHz and 1 GHz 10X passive probes information
Refer to the reference lead derating curve above when making floating measurements.
Table 9: Environmental specifications
Characteristics
Description
Temperature
Operating
Nonoperating
–15 °C to +65 °C (+5 °F to +149 °F)
–62 °C to +85 °C (–80 °F to +185 °F)
Humidity
Operating
Nonoperating
5% to 95% relative humidity @ up to 30 °C
5% to 45% relative humidity @30 °C up to 50 °C
Altitude
Operating
Nonoperating
4.6 km (15,000 ft) maximum
12.2 km (40,000 ft) maximum
Table 10: Certifications and compliances
Characteristics
Description
EC Declaration of Conformity
Compliance was demonstrated to the following specification as listed in the Official
Journal of the European Communities:
Low Voltage Directive 2006/95/EC:
EN61010-031: 2002
Measurement Category Descriptions
Category
Examples of Products in this Category
CAT III
Distribution-level mains, fixed installation
CAT II
Local-level mains, appliances, portable
equipment
CAT I
Circuits not directly connected to mains.
Pollution Degree 2
Do not operate in environments where conductive pollutants may be present (as
defined in IEC 61010-1). Rated for indoor use only.
Additional Safety Standards
UL61010B-1, First Edition & UL61010B-2-031, First Edition.
CAN/CSA-C22.2 No. 1010.1-92, & CAN/CSA-C22.2 No. 1010.2.031-94
IEC61010-031:2002
MDO4000C Series Oscilloscope User Manual
177
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
Appendix B: TPP0500B and TPP1000 500 MHz and 1 GHz 10X passive probes information
Equipment Recycling. This product complies with the European Union’s requirements according to Directive
2002/96/EC on waste electrical and electronic equipment (WEEE). For more information about recycling
options, check the Support/Service section of the Tektronix Web site
Safety summary
To avoid potential hazards, use this probe only as specified.
178
MDO4000C Series Oscilloscope User Manual
Appendix C: P6616 general-purpose logic probe
information
Product description
The P6616 general-purpose logic probe connects the Tektronix MDO4000C Series of mixed-signal oscilloscopes to digital buses
and signals on your target system. The probe contains 16 data channels split between two lead sets (GROUP 1 and GROUP 2).
The first lead in each set is identified by blue insulation, and the remaining seven leads are gray. All leads include a ground
connection at the tip. You can connect the probe leads separately to the target system, or group the leads together using the
probe tip holders.
Connecting the probe to the oscilloscope
Connect the probe as shown in the illustration below.
1.
Insert the probe label-side up into the connector on the oscilloscope.
2.
To remove the probe, squeeze the buttons on the side and pull out the probe.
MDO4000C Series Oscilloscope User Manual
179
Appendix C: P6616 general-purpose logic probe information
Connecting the probe to your circuit
Attach the probe to the circuit using the appropriate connectors and adapters. Select the best method for your needs, and then
proceed to Setting up the Probe.
To set and view the digital channel parameters, do the following:
Push the D15–D0 button.
The parameters listed below can be set on each digital channel:
■
Threshold voltage and vertical position (the default threshold setting is 1.4 V)
■
Signal height and position (set once for all 16 channels)
■
Channel label
To set and view bus characteristics, do the following:
Push the B1 to B4 buttons.
The setup screens allow you to set and view various bus characteristics.
For buses such as SPI and I2C, you must have the appropriate application module.
Functional check
Logic activity immediately displays on all connected, active channels. If you do not see an active signal:
1.
Push the Trigger button.
2.
Select Edge for trigger type.
3.
Select the channel that you are setting up as the source.
4.
Push the Autoset button.
If you do not see an active signal, try another probe channel (or analog probe) to verify circuit activity at the test point.
Typical application
180
1.
Use the P6616 probe to view digital signals on a system bus.
2.
Use an analog probe, such as the TPP0500B or TPP1000 passive probe, to view analog waveform information.
MDO4000C Series Oscilloscope User Manual
Appendix C: P6616 general-purpose logic probe information
Accessories
The following standard accessories ship with the probe and are shown in the illustration on the following page.
Item
Description
Quantity
Part number
–
Logic probe accessory kit
Item 1–6
020-2662-XX
1
Extension ground tip
1 set of 20
020-2711-XX
2
Probe tip
1 set of 10
131-5638-11
3
IC grabber
1 set of 20
020-2733-XX
4
Probe tip holder
2 ea
352-1115-XX
5
8” Ground lead
1 set of 2
020-2713-XX
6
3” Ground lead
1 set of 8
020-2712-XX
Instructions 1
1 ea
071-2831-XX
These optional accessories can be ordered for your probe:
Description
Part number
P6960 Probe D-MAX Footprint to Square Pin Header Adapter
NEX-P6960PIN
MDO4000C Series Oscilloscope User Manual
181
Appendix C: P6616 general-purpose logic probe information
Specifications
Table 11: Electrical and mechanical specifications
Characteristic
Description
Input channels
16 digital
Input resistance
100 kΩ ±1.0%
Input capacitance
3.0 pF
Input signal swing
Minimum
400 mV p-p
Maximum
30 V p-p, ≤200 MHz (centered around the DC threshold voltage) at the probe tip
10 V p-p, ≥200 MHz (centered around the DC threshold voltage) at the probe tip
Maximum nondestructive input signal
±42 V
User defined threshold range
±40 V
Minimum detectable pulse width
1 ns
Digital channel-to-digital channel skew
200 ps
Probe length
1.3 m (4.27 ft)
Maximum input toggle rate
500 MHz
Table 12: Environmental specifications
Characteristic
Description
Temperature
Operating
0 °C to +50 °C (+32 °F to +122 °F)
Non-operating
–55 °C to +75 °C (–67 °F to +167 °F)
Humidity
Operating
5% to 95% relative humidity
Non-operating
10% to 95% relative humidity
Altitude
Operating
4.6 km (15,092 ft) maximum
Non-operating
15 km (50,000 ft) maximum
Equipment Recycling. This product complies with the European Union’s requirements according to Directive
2002/96/EC on waste electrical and electronic equipment (WEEE). For more information about recycling
options, check the Support/Service section of the Tektronix Web site
182
MDO4000C Series Oscilloscope User Manual
Appendix C: P6616 general-purpose logic probe information
Safety summary
To avoid potential hazards, use this probe only as specified.
Connect and disconnect properly
Connect the probe output to the measurement instrument before connecting the probe to the circuit under test. Disconnect the
probe input and the probe ground from the circuit under test before disconnecting the probe from the measurement instrument.
Observe all terminal ratings
To avoid fire or shock hazard, observe all ratings and markings on the product. Consult the product manual for further ratings
information before making connections to the product.
Do not operate without covers
Do not touch exposed connections and components when power is present.
Avoid exposed circuitry
Do not touch exposed connections and components when power is present.
Do not operate with suspected failures
If you suspect there is damage to this product, have it inspected by qualified service personnel.
Do not operate in wet or damp conditions
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry
Safety terms and symbols in this manual.
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.
Symbols on the product
This symbol may appear on the product:
MDO4000C Series Oscilloscope User Manual
183
Appendix C: P6616 general-purpose logic probe information
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
184
MDO4000C Series Oscilloscope User Manual
Index
50 Ω protection, 99
A
Accessories, 1
ACD4000B, 5
Acquisition
Single,
Adapter
TEK-USB-488, 4
TPA-BNC, 5, 8
TPA-N-VPI, 5
Adjacent channel power ratio measurement, 119
Advanced math, 131
AFG OUT, 43
Amplitude measurement, 114
Annotating the screen, 103
Application modules
30-day free trial, 17
DPO4AERO, 3
DPO4AUDIO, 3
DPO4AUTO, 3
DPO4AUTOMAX, 3
DPO4COMP, 3
DPO4EMBD, 4
DPO4ENET, 4
DPO4LMT, 4
DPO4PWR, 4
DPO4USB, 4
DPO4VID, 4, 83
MDO4TRIG, 4
Area measurement, 115
Audio
bus trigger, 86
Auto trigger mode,
Auto-magnify mode, 140
Autoset
Video, 50
Autoset button, 13
Autoset disable, 49
AUX OUT, 43
Average acquisition mode, 54
Average trace, 106
MDO4000C Series Oscilloscope User Manual
B
B1 / B2 / B3 / B4, 84
Bandwidth, xvii, 97
Before Installation, 1
Blackman-Harris FFT window, 130
Blue lines, 102
BNC interface, 9
Burst Width measurement, 113
Bus
button, 84
Bus trigger, defined, 83
Buses, 84
Button
Autoset, 13
B1 / B2 / B3 / B4, 84
bus, 84
Save / Recall, 151
Set / Clear Mark, 137
C
Calibration, 22
Calibration certificate, 1
CAN
bus trigger, 85
Case
hard transit, 5
soft transit, 5
Channel power measurement, 119
Compensate
TPP500B or TPP1000 probe, 14
Confidential data, 165
Connecting
a USB keyboard, 28
to a PC, 25
Your oscilloscope, 25
Controls, 30
Copy a drive, directory, or file, 160
Cover, front, 2
Create new folder, 160
Cursor readout, 121
185
Index
Cursors
linking, 121
measurements, 121
Cycle Area measurement, 115
Cycle Mean measurement, 114
Cycle RMS measurement, 115
D
Data value matching, 87
Date and time, changing, 20
Default Setup, 48, 158
Delay measurement, 113
Delay time, 56
Delete directory or file, 160
Deskew, 98
dI/dt, 4
Digital channels, 102
Disable Autoset, 49
Displaying, reference waveforms, 155
DPO4AERO, 3, 169
DPO4AUDIO, 3, 169
DPO4AUTO, 3, 169
DPO4AUTOMAX, 3, 169
DPO4BND, 169
DPO4COMP, 3, 169
DPO4EMBD, 4, 169
DPO4ENET, 4, 169
DPO4LMT, 4, 169
DPO4PWR, 4, 170
DPO4USB, 4, 170
DPO4VID, 4, 83, 170
Dual waveform math, 127
dV/dt, 4
E
Edge trigger, defined, 81
Edges
Fuzzy, 102
White, 102
Envelope acquisition mode, 54
Erase setup and ref memory, 165
Ethernet
186
bus trigger, 86
F
Factory calibration, 22
Fall Time measurement, 113
Falling Edge Count measurement, 115
FFT
Blackman-Harris, 130
controls, 128
Hamming, 130
Hanning, 130
Rectangular, 130
File format
Instrument Specific File Format (ISF), 155
Spreadsheet, 155
File names, 149
File system, 154
Filesystem, 149
Firmware
upgrade, 23
firmware.img file, 23
FlexRay
bus trigger, 85
Format a drive, 160
Frequency measurement, 113
Front cover, 2
Front panel, 30
Front panel controls, 29
front panel overlay, 19
Functional check, 12
Fuzzy edges, 102
G
Green lines, 102
Ground
lead, 16
Grouping channels, 71
H
Hamming FFT window, 130
Hanning FFT window, 130
Hard copy, 161
HCTEK54 transit hard case, 5
MDO4000C Series Oscilloscope User Manual
Index
Hi Res acquisition mode, 54
High measurement, 114
Histogram measurements, 115
Hits in Box measurement, 115
Horizontal lines
Green and blue, 102
Horizontal position
and math waveforms, 127
Horizontal scale
and math waveforms, 127
How to
calibrate a TPP0500B or TPP1000 voltage probe, 14
connect probes and adapters, 8
connect to a computer, 25
erase memory, 165
manage long record length waveforms, 135
perform a functional check, 12
power off the oscilloscope, 11
print a hard copy, 161
recall setups, 157
recall waveforms, 151
save screen images, 151
save setups, 157
save waveforms, 151
search through and add marks to waveforms, 137
select automatic measurements, 113
take an automatic measurement in the frequency
domain, 119
take an automatic measurement in the time domain,
112
take manual measurements with cursors, 121
trigger on buses, 84
upgrade the firmware, 23
use Wave Inspector, 135
I
I2C, 84
I2S, 84
Impedance, 97
Indicator
trace, 106
Inner knob, 127
Instrument Specific File format (ISF), 155
Invert, 97
MDO4000C Series Oscilloscope User Manual
ISF format, 155
K
Keyboard
Connection, 28
Key layout style, 28
language, 19
Knob
inner, 127
Multipurpose, 154
pan, 136, 137
zoom, 127
Knobs
, See Front panel controls
L
Language
change, 19
overlay, 19
Left Justified (LJ), 84
LIN
bus trigger, 85
Linked cursors, 121
Logic probe, 3
Logic probe interface, 9
Logic trigger, defined, 82
Long record length
management, 135
Low measurement, 114
Low resolution message, 112
M
MagniVu, 72
Mark, 137
Math
Advanced, 131
Dual waveform, 127
FFT, 128
spectrum, 132
Max hold trace, 106
Max measurement, 114, 116
MDO4TRIG, 4, 170
Mean measurement, 114, 116
187
Index
Measurement
adjacent channel power ratio, 119
channel power, 119
occupied bandwidth, 119
Measurements
automatic, 112
cursor, 121
defined, 113
frequency domain, 119
histogram, 115
Mediam measurement, 115
Memory, erasure of, 165
Menu
buttons, 31
Reference, 134
Save / Recall, 151
MIL-STD-1553
bus trigger, 86
data value matching, 87
Min hold trace, 106
Min measurement, 114, 116
Mode, roll, 57
Mount or unmount a drive, 160
Mount or unmount a networked drive, 160
Multiple transition detection, 102
Multipurpose knob, 154
N
Negative Duty Cycle measurement, 113
Negative Overshoot measurement, 114
Negative Pulse Count measurement, 115
Negative Pulse Width measurement, 113
Networked drives, mounting and unmounting, 160
NEX-HD2HEADER, 4
Normal trace, 106
Normal trigger mode,
O
Occupied bandwidth measurement, 119
Offset and position, 99
Offset vertical, 98
Overlay, 19
P
P6616, 71
188
P6616 logic probe, 3
Pan
knob, 136, 137
Parallel bus
trigger, 84
Peak detect acquisition mode, 54
Peak Hits measurement, 115
Peak-to-peak measurement, 115
Peak-to-Peak measurement, 114
Period measurement, 113
Phase measurement, 113
PictBridge, 161
Position
Horizontal, 129
Vertical, 96
Position and offset, 99
Positive Duty Cycle measurement, 113
Positive Overshoot measurement, 114
Positive Pulse Count measurement, 115
Positive Pulse Width measurement, 113
Pouch, probe and accessory, 3
Power
cord, 2
input, 44
off, 11
removing, 11
Predefined math expressions, 127
Print
hard copy, 161
Probe
accessory, 3
logic, 3
Probe compensation
TPP0500B or TPP1000, 14
Probes
BNC, 9
connecting, 8
ground lead, 16
logic, 9
P6616, 179
TEK-USB-488 Adapter, 4
TekVPI, 5, 8
TPA-BNC Adapter, 5, 8
TPP0500, 2, 173
TPP1000, 2, 173
MDO4000C Series Oscilloscope User Manual
Index
Pulse Width trigger, defined, 81
R
Rackmount, 5
Readout
Cursor, 121
Trigger, 88
Trigger frequency, 104
Rear panel connectors, 43
Recalling
setups, 157
waveforms, 151
Record length, xvii
Rectangular FFT window, 130
REF IN, 43
Reference level, 106
Reference menu, 134
Reference waveforms
displaying, 155
removing, 134, 155
saving 10 M and 20 M waveforms, 134
Removing reference waveforms, 134, 155
Rename a drive, directory, or file, 160
Right Justified (RJ), 84
Rise Time measurement, 113
Rise/Fall trigger, defined, 82
Rising Edge Count measurement, 115
RMS measurement, 115
Roll mode, 57
RS-232
bus trigger, 85
data value matching, 87
Run/Stop button, 90
Runt trigger, defined, 81
S
Sample acquisition mode, 54
Sample rates, xvii
Save / Recall menu, 151
Save / Recall Save button, 151
Saving
screen images, 151
setups, 157
MDO4000C Series Oscilloscope User Manual
waveforms, 151
Saving and recalling Information, 149
Scale
Horizontal, 129
Vertical, 96
Screen annotations, 103
Search, 137
Securing memory, 165
Selecting a keyboard key layout style, 28
Sequence (B Trigger), defined, 81
Serial bus
trigger, 84
Set / Clear Mark button, 137
Setup
default, 158
Setup and Hold trigger, defined, 82
Sigma1 measurement, 116
Sigma2 measurement, 116
Sigma3 measurement, 116
Signal path compensation
Time and frequency domains, 21
Single acquisition,
Single sequence, 90
Slew rate, 4
Software, optional, 169
Spectrum Math, 132
Spectrum traces, 105
SPI, 84
SPI bus trigger, 84
Spreadsheet file format, 155
Standard Deviation measurement, 116
Start an acquisition, 90
Stop an acquisition, 90
T
TDM, 84
TEK-USB-488 Adapter, 4
TekSecure, 165
TekVPI, 8
TekVPI Probes, 5
Termination, 97
Timeout trigger, defined, 81
TPA-BNC Adapter, 5, 8
TPA-N-VPI Adapter, 5
189
Index
TPP0500 probe, 2
TPP0500B or TPP1000 compensation, 14
TPP1000 probe, 2
Trace
average, 106
indicator, 106
max hold, 106
min hold, 106
normal, 106
Transit case
hard, 5
soft, 5
Transition trigger, defined, 82
Trigger
Audio bus, 86
Bus, defined, 83
buses, 84
Can bus, 85
Edge, defined, 81
Ethernet bus, 86
FlexRay bus, 85
Frequency readout, 104
LIN bus, 85
Logic, defined, 82
MIL-STD-1553 bus, 86
MIL-STD-1553 data value matching, 87
Parallel bus, 84
parallel bus data matching, 87
Pulse Width, defined, 81
readout, 88
Rise/Fall, defined, 82
RS-232 bus, 85
RS-232 data value matching, 87
Runt, defined, 81
Sequence (B Trigger), defined, 81
Setup and Hold, defined, 82
SPI bus, 84
Timeout, defined, 81
USB bus, 86
Video, defined, 83
Trigger Mode
Auto,
Normal,
Triggering on Buses, 84
190
U
Upgrading firmware, 23
USB
bus trigger, 86
device port, 44
host port, 44
User interface language, 19
User marks, 137
V
Versatile Probe Interface, 8
Vertical
offset, 99
Offset, 98
position, 96
position and autoset, 50
position and offset, 99
scale, 96
VESA mounts, 44
Video
Autoset, 50
Video Out
port, 43
Video trigger, defined, 83
View
digital channels, 102
W
Wave Inspector, 135
Waveform
histogram measurements, 115
search and mark, 137
user marks, 137
Waveform Count measurement, 115
White edges, 102
Z
Zoom
graticule size, 136
MDO4000C Series Oscilloscope User Manual
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