Aeroflex / Weinschel 8311 SmartStep Programmable Attenuator Operation & Service Manual

The 8311 SmartStep Programmable Attenuator Unit represents a new concept in programmable attenuation for bench test and subsystem applications. The 8311 combines the features of the Weinschel 8210A Device Controller with a front panel user interface to form a flexible, easy to use solution. Typical 8311 Series are multi-channel configurations where RF signal is routed through either the front or rear mounted channel connector to a single or multiple Weinschel programmable attenuators thus creating a channel.

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Model 8311 Attenuator Unit

Operation & Service Manual

Model 8311

SmartStep



Programmable Attenuator Units

This documentation may not be reproduced in any form, for any purpose unless authorized in writing by Aeroflex / Weinschel, Inc.

© Aeroflex / Weinschel, Inc.

Frederick, Maryland

2003 - 2010

SAFETY SUMMARY

DEFINITIONS.

The following definitions apply to WARNINGS,

CAUTIONS, and NOTES found throughout this manual.

WARNING

An operating or maintenance procedure, practice, statement, condition, etc., which, if not strictly observed, could result in injury and/or death of personnel. Do not proceed beyond a WARNING symbol until all the indicated conditions have been fully understood and/or met.

CAUTION

An operating or maintenance procedure, practice, statement, condition, etc., which, if not strictly observed, could result in damage or destruction of the equipment or long-term health hazards to personnel.

Do not proceed beyond a CAUTION symbol until all the indicated conditions have been fully understood and/or met.

NOTE

An essential operating or maintenance procedure, condition, or statement that must be highlighted.

GENERAL PRECAUTIONS.

The following are general precautions that are not related to any specific procedure and, therefore, do not appear elsewhere in this publication. These are precautions that personnel must understand and apply during various phases of instrument operation or service.

WARNING

•

Potentially lethal voltages are present in this instrument. Serious shock hazards from voltages above 70 volts may exist in any connector, chassis, or circuit board. Observe the following precautions:

•

To minimize shock hazard, the instrument chassis must be connected to an electrical ground. Using the supplied three-conductor power cable ensures that the instrument can be firmly connected to the ac power source and electrical ground at a grounded power outlet. If using a 3-2 wire adapter be sure to connect the ground lead to earth ground.

•

Use the buddy system any time work involving active high voltage components is required. Turn

OFF the power before making/breaking any electrical connection. Regard any exposed connector, terminal board, or circuit board as a possible shock hazard. DO NOT replace any component or module with power applied.

•

If test conditions to live equipment are required, ground the test equipment before probing the voltage or signal to be tested.

•

Personnel working with or near high voltage should be familiar with modern methods of resuscitation.

•

DO NOT wear jewelry (rings, bracelets, metal watches, and/or neck chains) while working on exposed equipment. Be very cautious about using hand tools near exposed backplanes, bus bars, and/or power supply terminals. Use properly insulated tools. When making test connections to the power supply terminals and bus bars, use only insulated probe tips.

•

Verify that the instrument is set to match the available line voltage and the correct fuse is installed.

•

DO NOT install substitute parts or perform any unauthorized modification to this instrument.

Contact Weinschel Corporation to acquire any information on replacement parts or returning the instrument for repair. Unauthorized modification can cause injury to personnel and/or destruction of the instrument.

•

Operating personnel must not remove instrument covers. Component replacement or adjustments

MUST BE performed by qualified service personnel.

•

DO NOT operate the instrument near or in the presence of flammable gases or fumes.

DETAILED PRECAUTIONS.

The following WARNINGS, CAUTIONS and NOTES appear throughout the text of this manual and are repeated here for emphasis.

SAFETY SUMMARY

CAUTION

•

All procedures and/or steps identified as must be followed exactly as written and according to industry accepted ESDS device handling procedures. Failure to comply WILL

RESULT in ESDS damage.

•

DO NOT use a nylon bristle brush in the solvent as the bristles may dissolve and cause damage to the circuit card or component.

•

DO NOT use ultrasonic cleaning on parts or assemblies containing electrical or electronic components.

•

DO NOT bend pins of electrical connectors when using fiber-bristle brush.

•

Compressed air used for cleaning and/or drying can create airborne particles that may enter the eye. Goggles/faceshields should be worn. DO

NOT direct air stream towards self or other personnel. Pressure should be restricted to a maximum of 15 psi to avoid personal injury.

•

Under no circumstances should a wire brush, steel wool, or abrasive compound be used on any surface. Using these items will cause extensive damage to the instruments surface.

NOTE

DO NOT return any instrument or component to

Weinschel Corporation without receiving prior factory authorization.

SAFETY SYMBOLS.

The following symbols are used to identify safety hazards found throughout this publication and/or located on the instrument.

CAUTION

HIGH VOLTAGE

WARNING

HIGH

VOLTAGE

Model 8311 Attenuator Unit

IM-303A

1. GENERAL INFORMATION .................................................................................................................................................... 5

1-1. PURPOSE ........................................................................................................................................................................................... 5

1-2. SCOPE ............................................................................................................................................................................................... 5

1-3. EQUIPMENT DESCRIPTION .......................................................................................................................................................... 5

1-4. USING THE 8311 .............................................................................................................................................................................. 5

1-5. UNPACKING AND INSPECTION ................................................................................................................................................... 6

1-6. RESHIPMENT INSTRUCTIONS ..................................................................................................................................................... 6

1-7. STORAGE INSTRUCTIONS ............................................................................................................................................................ 6

1-8. RELATED MANUALS ..................................................................................................................................................................... 7

1-9. ELECTROSTATIC DISCHARGE SENSITIVE (ESD)..................................................................................................................... 7

1-10. ABBREVIATIONS & ACRONYMS .............................................................................................................................................. 7

1-11. SAFETY CONSIDERATIONS ........................................................................................................................................................ 7

1-12. POWER REQUIREMENTS ............................................................................................................................................................ 7

1-13. ENVIRONMENTAL REQUIREMENTS ........................................................................................................................................ 7

2. SPECIFICATIONS ................................................................................................................................................................................... 8

2-1. GENERAL SPECIFICATIONS ......................................................................................................................................................... 8

2-2. PHYSICAL DIMENSIONS ............................................................................................................................................................... 9

2-3. CONFIGURATIONS\RF SPECIFICATIONS ................................................................................................................................... 9

3. INSTALLATION .................................................................................................................................................................... 10

3-1. RACKMOUNTING ......................................................................................................................................................................... 10

3-2. INTIAL SETUP ............................................................................................................................................................................... 10

3-3. INPUT/OUTPUT OPTIONS ............................................................................................................................................................ 10

3-3.1. POWER ENTRY MODULE ASSEMBLY ................................................................................................................................... 11

3-3.2. CHANNEL PORT CONNECTORS.............................................................................................................................................. 11

4. FRONT PANEL CONTROLS & INDICATORS .................................................................................................................. 12

5. REMOTE OPERATION ........................................................................................................................................................ 13

5.1. IEEE-488 INTERFACE BUS CONNECTOR .................................................................................................................................. 13

5-2. GPIB ADDRESS/SERIAL COMMUNICATIONS SETTINGS ................................................................................................. 13-14

5-3. IEEE-488 (GPIB) BUS OPERATION ............................................................................................................................................. 15

5-4. SERIAL OPERATION .................................................................................................................................................................... 16

5-4.1. RS-232 OPERATION ................................................................................................................................................................... 17

5-4.2. RS-422/485 OPERATION ............................................................................................................................................................ 18

5-5. STATUS REPORTING ............................................................................................................................................................... 19-20

5-6. GENERAL SYNTAX STRUCTURE .............................................................................................................................................. 20

5-6.1. SYNTAX OF QUERIES ............................................................................................................................................................... 20

5-6.2. SYNTAX OF COMMANDS ................................................................................................................................................... 20-21

5-6.3. OUTPUT DATA FORMAT .......................................................................................................................................................... 21

5-6.4. NOTATIONAL CONVENTION .................................................................................................................................................. 21

5-7. 488.2 COMMON COMMANDS ................................................................................................................................................ 22-23

5-8. GENERAL COMMANDS .......................................................................................................................................................... 24-25

Aeroflex / Weinschel 2

Model 8311 Attenuator Unit IM-303A

6. GENERAL CIRCUIT DESCRIPTION ............................................................................................................................. 26-27

6-1. POWER SUPPLY ASSEMBLY ....................................................................................................................................................... 26

6-2. STATUS DISPLAYS AND SWITCH CONTROL ASSEMBLY .................................................................................................... 26

6-3. SMARTSTEP INTERFACE ASSEMBLY ...................................................................................................................................... 26

6-4. RF SECTION ................................................................................................................................................................................... 27

7. MAINTENANCE ................................................................................................................................................................... 28

7-1. INSPECTION ................................................................................................................................................................................... 28

7.2. PREVENTIVE MAINTENANCE .................................................................................................................................................... 28

7.3. SPECIAL CLEANING INSTRUCTIONS ....................................................................................................................................... 28

7-3.1. MICROWAVE COAXIAL CABLE ASSEMBLIES ........................................................................................................ 28

7-3.2. CIRCUIT CARDS AND MODULES ............................................................................................................................... 28

7-3.3. MACHINED SURFACES AND HARDWARE ............................................................................................................... 29

7-3.4. CHASSIS CLEANING ................................................................................................................................................................. 29

7-3.5. CONNECTOR CLEANING .............................................................................................................................................. 29

7.4. LINE VOLTAGE FUSE REPLACEMENT ..................................................................................................................................... 30

8. REPLACAEBLE PARTS LIST .............................................................................................................................................. 31

8-1. UNDERSTANDING REFERENCE DESIGNATORS .................................................................................................................... 31

8-2. ORDERING INFORMATION ......................................................................................................................................................... 32

8-3. DRAWING NUMBER ..................................................................................................................................................................... 31

8-4. REPLACEABLE PARTS LIST ....................................................................................................................................................... 31

8-4.1. REFERENCE DESIGNATOR .......................................................................................................................................... 31

8-4.2. DESCRIPTION ................................................................................................................................................................. 31

8-4.3. PART NUMBER ............................................................................................................................................................... 31

8-4.4. VENDOR PART NUMBER ............................................................................................................................................. 31

8-5.5. CAGE CODE .................................................................................................................................................................... 31

8-4.6. ASSEMBLY AND COMPPONET LOCATION .............................................................................................................. 31

8311-1-6-R, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7301-1) .................................................. 32

8311-1-6-F, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7301-2) .................................................. 33

8311-38-6-F, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7302-2) ................................................ 34

8311-38-12-T, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7302-8) .............................................. 35

8311-137-6-F, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7303-2) .............................................. 36

8311-137-6-R, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7303-12) ............................................ 37

8311-202-2-F, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7305-2) .............................................. 38

8311-202-3-F, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7305-3) .............................................. 39

8311-204-6-F, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7304-2) .............................................. 40

8311-352-3-R, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7306-13) ............................................ 41

8311-352-4-R, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7306-14) .......................................... 42

8311-352-6-F, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7306-2) .............................................. 43

8311-352-9-T, ATTENUATOR UNIT ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-7306-9) .............................................. 44

BASIC MODEL 8311 ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-8051) ........................................................................... 45

BASIC MODEL 8311 (+5 V) ASSEMBLY REPLACEABLE PARTS LIST (P/N 193-8051-1) ............................................................ 46

9. APPLICATIONS .................................................................................................................................................................... 47

10. ACCESSORIES .................................................................................................................................................................... 47

11. CONTACTING AEROFLEX / WEINSCHEL. ................................................................................................................... 47

Aeroflex / Weinschel 3

Model 8311 Attenuator Unit IM-303A

12. AEROFLEX / WEINSCHEL WARRANTY ...................................................................................................................... 48

13. ASSEMBLY/WIRING DIAGRAMS

8311-1-6-F, ATTENUATOR UNIT ASSEMBLY DIAGRAM ............................................................................................. 193-7301-2A

8311-38-6-F, ATTENUATOR UNIT ASSEMBLY DIAGRAM ........................................................................................... 193-7302-2B

8311-38-12-T, ATTENUATOR UNIT ASSEMBLY DIAGRAM ......................................................................................... 193-7302-8D

8311-137-6-F, ATTENUATOR UNIT ASSEMBLY DIAGRAM ......................................................................................... 193-7303-2D

8311-137-6-R, ATTENUATOR UNIT ASSEMBLY DIAGRAM ........................................................................................ 193-7303-12C

8311-202-2-F, ATTENUATOR UNIT ASSEMBLY DIAGRAM ......................................................................................... 193-7305-2D

8311-202-3-F, ATTENUATOR UNIT ASSEMBLY DIAGRAM ......................................................................................... 193-7305-3A

8311-204-6-F, ATTENUATOR UNIT ASSEMBLY DIAGRAM ....................................................................................... 193-7304-12A

8311-352-3-R, ATTENUATOR UNIT ASSEMBLY DIAGRAM ........................................................................................ 193-7036-13A

8311-352-4-R, ATTENUATOR UNIT ASSEMBLY DIAGRAM ........................................................................................ 193-7036-14B

8311-352-6-F, ATTENUATOR UNIT ASSEMBLY DIAGRAM .......................................................................................... 193-7036-2B

8311-352-9-T, ATTENUATOR UNIT ASSEMBLY DIAGRAM ......................................................................................... 193-7306-9C

BASIC MODEL 8311 ASSEMBLY REPLACE DIAGRAM .................................................................................................... 193-8051A

BASIC MODEL 8311 (+5 V) ASSEMBLY DIAGRAM ....................................................................................................... 193-8051-1A

MODEL 8311 WIRING DIAGRAM ......................................................................................................................................... 193-8102B

MODEL 8311 WIRING DIAGRAM ......................................................................................................................................... 193-8108A

MODEL 8311 (+5V) WIRING DIAGRAM ............................................................................................................................... 193-8114B

MODEL 8311 (+5V) WIRING DIAGRAM ............................................................................................................................... 193-8120C

MODEL 8311 WIRING DIAGRAM (193-352-9-T) .................................................................................................................. 193-8129C

ICD, SPECFICATIONS 8311-1-X-X ......................................................................................................................................... 089-3594A

ICD, SPECFICATIONS 8311-38-X-X ....................................................................................................................................... 089-3584C

ICD, SPECFICATIONS 8311-137-6-R ...................................................................................................................................... 089-3724B

ICD, SPECIFICATIONS 8311-137-6-X .................................................................................................................................... 089-3599C

ICD, SPECFICATIONS 8311-20X-X-X .................................................................................................................................... 089-3574C

ICD, SPECFICATIONS 8311-352-X-X ..................................................................................................................................... 089-3868C

Aeroflex / Weinschel 4

Model 8311 Attenuator Unit

1. GENERAL INFORMATION:

IM-303A

1-1 PURPOSE: This manual contains setup and operation information for the Aeroflex / Weinschel’s 8311 Series of

SmartStep

Attenuator Units. The manual also provides component location, reference designators, part numbers, and nomenclature to identify all the assemblies and sub-assemblies of the Attenuator Unit.

1-2 SCOPE: This manual is to be used in conjunction with the operation and maintenance of a 8311 Series

SmartStep™ Attenuator Unit. The manual also provides a description of each assembly; assembly parts list; block diagrams: and general maintenance procedures to maintain the instrument.

1-3 EQUIPMENT DESCRIPTION: Aeroflex / Weinschel’s 8311

Series SmartStep Attenuator Units represents a new concept in programmable attenuation for bench test and subsystem applications. Standard 8311 designs house and control various

Weinschel Programmable Attenuator Models (3200T, 150T, and

4200 Series) via front panel controls or standard communications interfaces including GPIB (IEEE-488) and RS-232/RS-422

/RS485. Special configurations also exists where the RF section is designed to specific customer requirements which can contain to multiple programmable attenuations used in conjunction with other coaxial devices such as switches, power combiners, directional couplers, and filters creating single or multi-channel subsystems.

1-4 USING THE 8311: The 8311 Series provides front-panel and computer control for up to 12 channels of attenuation, RF switching, or other functions. The 8311 combines the features of the Weinschel 8210A Device Controller with a front panel user interface to form a flexible, easy to use solution. Most 8311 Series are multi-channel configurations where RF signal is routed through either the front or rear mounted channel connector to a single or multiple Weinschel programmable attenuators thus creating a channel.

For specialized configurations refer to supplemental information in the front of this manual for details. Typically

Weinschel programmables are bi-directional and the RF signal can be applied to either Channel connector. Channels can be selected by selecting the front panel CHAN button. When selected, as indicated by the CHAN indicator, a new attenuation value may be entered using the INCR and DECR keys. The main display will show the current attenuation setting of the channel.

A new attenuation setting in dB may be entered using the INCR/DECR or ENTRY keys. The front panel STEP key allows the user to define the attenuation step size used by the INCR and DECR keys. Remember that the attenuation step size (resolution) is limited to the physical size of the internal attenuator cells. For example a 0-70 unit with 10 dB steps can only be adjusted in 10 dB increments but larger increments such as 20, 30, 40 dB can be set using this key.

The REL key allows the user to set relative mode for attenuators.

When turned on, the currently displayed attenuation value is used as a reference value from which the attenuation may be set. In this mode, attenuation values may be positive or negative from the reference setting. When REL is turned off, the display returns to the actual attenuation setting for the channel. Refer to Section 5 for more detailed information about the front panel keys and indicators. All 8311 Series functions can also be controlled via standard communications interfaces including GPIB (IEEE-488) and RS-232/RS-422 /RS485. Refer to Section 6 for bus setup and operating instructions when using the 8311 Series in the remote mode.

Aeroflex / Weinschel 5

Model 8311 Attenuator Unit IM-303A

1-5. UNPACKING AND INSPECTION: Upon unpacking the equipment, retain the shipping container and packing material for future shipment for recalibration. Perform the following initial inspection: a. Carefully look at the outside of the shipping container for discoloration, stains, charring, or other signs of exposure to excessive heat, moisture, or liquid chemicals. Check for any physical damage to the shipping container such as dents, snags, rips, crushed sections or areas, or similar signs of excessive shock or careless handling. b. With the equipment and any accessory package removed from the shipping container, check each item against the packing list or Items Supplied List. If any items are missing, contact the Weinschel, Inc. Customer

Service Department. c. Carefully inspect the equipment looking for dents, deep scratches, damaged or loose connector, or any other d. signs of physical abuse or careless handling. If damage is found, forward an immediate request to the delivering carrier to perform an inspection and prepare a concealed-damage report. DO NOT destroy any packing material until it has been examined by an agent of the carrier. Concurrently, report the nature and extent of damage to Weinschel, Inc., giving equipment model and serial numbers, so that necessary action can be taken. Under U.S. shipping regulations, damage claims must be collected by the consignee;

DO NOT return the equipment to Aeroflex / Weinschel, Inc. until a claim for damages has been established.

1-6. RESHIPMENT: Use the best packaging materials available to protect the unit during storage or reshipment.

When possible, use the original packing container and cushioning material. If the original packing materials are not available, use the following procedure: a. Wrap the storage cases in sturdy paper or plastic; b. Place the wrapped storage cases in a strong shipping container and place a layer of shock-absorbing material

(3/4 inch minimum thickness) around all sides of the unit to provide a firm cushion and to prevent movement inside the container. c. If shipping the unit for service, attach a tag to indicate:

1. model and serial numbers

3. description of malfunction

5. authorization to conduct repairs

6. return authorization number d. Thoroughly seal the shipping container and mark it FRAGILE. Ship to:

Aeroflex / Weinschel, Inc.

Attn: Customer Service Department

5305 Spectrum Drive

Frederick, MD 21703-7362 or to an authorized sales representative.

1-7. STORAGE: Storage of the Model 8311 Series SmartStep™ Attenuator Unit is possible for extended periods without incurring damage to internal circuitry if the 8311 Series is packaged according to the instructions above. The safe limits for storage environment are as follows:

Temperature: 67° to +167 °F (-55° to +75 °C)

Humidity: less than 95% without condensation

Altitude: Up to 40,000 feet

Aeroflex / Weinschel 6

Model 8311 Attenuator Unit IM-303A

1-8. RELATED MANUALS: The following manuals contain information that may be used in conjunction with this manual to operate, service, or calibrate this instrument.

Manual

H4-1 and H4-2

Title

Federal Supply Code for Manufacturers Cataloging Handbook

IM-275

IM-276

IM-248

Operating & Installation Instructions for 3200T & 3201T Series

SmartStep Programmable Attenuators

Operating & Installation Instructions for 150T, 151T, 152T & 152T Series

SmartStep Programmable Attenuators

Operating & Installation Instructions for 4226 & 4228 Series

SmartStep Solid-State Programmable Attenuators

1-9. ELECTROSTATIC DISCHARGE SENSITIVE: The equipment documented in this manual contains certain

Electrostatic Discharge Sensitive (ESDS) components or parts. Therefore, certain procedures/steps are identified by the use of the symbol . . This symbol is used in two ways:

CAUTION

All procedures and/or steps identified as must be followed exactly as written and according to accepted ESDS device handling procedures. Failure to comply WILL RESULT in ESDS damage. a. When the ESDS symbol is placed between a paragraph number and title , all of that paragraph, including all subparagraphs, is considered ESDS device handling procedure. b. When the ESDS symbol is placed between a procedure/step number and the text , all of that procedure is considered an ESDS device handling procedure.

1-10. ABBREVIATIONS AND ACRONYMS: The following list contains abbreviations used throughout this manual.

Abbreviations and acronyms that are not listed conform to MIL-STD-12D.

DUT Device Under Test

ESDS Electrostatic Sensitive

DIB

TBD

Device Interface Bus

To Be Determined

1-11. SAFETY CONSIDERATIONS: The Attenuator Unit and all related documentation must be reviewed for familiarization with safety markings and procedures before any operation and/or service. Refer to the SAFETY

SUMMARY located at the beginning of this manual for a summary of safety information and procedures. Following these simple safety precautions will ensure safe operation and service of the Attenuator Unit.

1-12. POWER REQUIREMENTS: Aeroflex / Weinschel supplies a detachable power cable (P/N 068-21) to connect an 100 to 240 Vac power source with a frequency between 50 to 60 H Z to the Attenuator Unit. To minimize shock hazard, the instrument chassis must be connected to an electrical ground. Using the supplied three-conductor power cable ensures that the instrument can be firmly connected to the ac power source and electrical ground (safety ground) at a grounded power outlet. Refer to paragraph 4-2 (Initial Setup) before applying any power to the instrument.

1-13. ENVIRONMENTAL REQUIREMENTS: This instrument performs best within its specifications when operated within a controlled environment having an ambient temperature of 0°± 50°C, Relative Humidity of up to 95% non condensing, and a altitude of less than 40,000 feet. Operating beyond these limits can affect the accuracy and performance of the instrument and damage internal circuitry.

Aeroflex / Weinschel 7

Model 8311 Attenuator Unit

2. SPECIFICATIONS:

2-1. GENERAL SPECIFICATIONS:

Input Power Requirements

Environmental ac 100 to 240 Vac, 50/60 Hz, 50 Watts

Operating Temperature

Storage Temperature:

Humidity:

Altitude:

0 to +50°C

67° to +167 °F (-55° to +75°C)

96%

40,000' (12,192M)

IEEE-488 Bus

(1)

Connector:

Protocols:

Indicators:

24-pin per IEEE-488.1 per IEEE-488.2

Remote (RMT), Listen (LSN), Talk (TLK), SRQ (SRQ)

RS-232 Bus

(2)

Connector: 9-pin male D

Signals: TXD, RXD, RTS, CTS, DTR, GND

Baud Rates: 2400, 9600, 19200, and 38400

Data Bits: 8

Handshaking: None, RTS/CTS, XON/XOFF

Parity:

Indicators:

None, Odd, Even

Tx (Transmit) and Rx (Receive)

IM-303A

RS-422 Bus

RS-485 Bus

(3)

(4)

Connector: 9-pin male D

Signals: TXD+, TDX-, RXD+, RTX-, RTS+, RTS-, CTS+, CTS-,

Baud Rates: 2400, 9600, 19200, and 38400

Data Bits: 8

Handshaking: None, RTS/CTS, XON/XOFF

Parity:

Indicators:

None, Odd, Even

Tx (Transmit) and Rx (Receive)

RF Characteristics

(5)

See Model Configuration Table (pg 9)

NOTES:

1. GPIB/IEEE-488 model allows user-selectable addresses.

2. RS-232 can be used with standard PC serial port for short and medium distances (up to approximately 50 ft).

3. RS-422: designed for very long distance communications (4000 ft) and & optimized as a single node protocol, typically with one device

connected to a single port.

4. RS-485: designed for very long distance communications (4000 ft) & optimized for multi-drop connections that can used to create a

low cost network.

5. Refer to Individual data sheet (Appendix C) for detailed specifications on internal programmable attenuators.

Aeroflex / Weinschel 8

Model 8311 Attenuator Unit

2-2. PHYSICAL DIMENSIONS:

IM-303A

8311-1-6-R

8311-1-6-F

8311-38-6-F

8311-38-12-T

8311-137-6-F

8311-137-6-R

8311-202-2-F

8311-202-3-F

8311-204-6-F

8311-204-6-R

8311-352-3-R

8311-352-4-R

8311-352-6-F

8311-352-9-T

121/1

62/2

103/1

63/1

103/1 dc-1.0

dc-1.0

dc-2.0

dc-3.0

dc-18.0

dc-6.0

6.00 dB max 1.6 max

5.25 dB max 1.4 max

4.70 dB max 1.6 max

5.25 dB max 1.95 max

3.25 dB max 1.95 max

6 dB max

1.55 max

6 dB max 1.55 max

3250T-63

3206T-1

4226T-63

150T-11, 150T-110

150T-62

3408T-103

BNC/F

N/F

SMA/F

NOTE: All dimensions are given in mm (inches) and are maximum, unless otherwise

2-3. CONFIGURATIONS\RF SPECIFICATIONS:

Model No

Attenuator

Value

Frequency

Range (GHz)

Insertion Loss SWR

No. of

Channels

Attenuator Type

Connector

Type

Connector

Location

Drawing Number

Rear 193-7301-1

Front 193-7301-2

Front 193-7302-2

Front-Rear 193-7302-8

Front 193-7303-2

Rear 193-7303-12

Front 193-7305-2

Front 193-7305-3

Front 193-7304-2

Rear 193-7304-12

Front 193-7306-13

Front 193-7306-14

Front 193-7306-2

Front 193-7306-9

Aeroflex / Weinschel 9

Model 8311 Attenuator Unit IM-303A

3. INSTALLATION:

3-1. RACKMOUNTING: Standard 8311 Attenuator Units are shipped with four plastic feet mounted to the bottom cover, this allows the user to place the instrument on any bench or to stack the with other Weinschel instruments. The

Model 8311 can also be rack mounted as a single unit using Rack Mounting Kit (P/N 193-8033-1). This kit allows the

Model 8311 to be mounted in any rack or cabinet that is designed according to EIA RS-310 or MIL-STD-189.

3-2. INITIAL SETUP: The following initial setup procedures should be performed prior to operating the 8311 Unit. a. Perform inspection paragraph 1-5 prior to connecting the 8311 Series to any power source. b. Check that the external power source outputs to the 8311 Series are in accordance with

Section 2, Specifications. c. Install the 8311 Series into a cabinet or rack, if desired. d. Using the supplied power cord connect the 8311 Series to the external power source. e. Setup the IEEE-488 bus address or RS-232/422 Communications options for your application using paragraph 4-2.6. If using the RS-422 serial configure the selectable signal pair terminations using paragraph 5-3.

3-3 INPUT/OUTPUT OPTIONS: The following paragraphs provide a description of the connections that can be made to the 8311 Series Attenuator Unit. Figure 1 shows the location of these connectors and switches.

WARNING

Sufficient power levels are present at the Power Input Assembly to cause personal injury.

Ensure that the instrument power cord is DISCONNECTED before attempting to change fuses.

Aeroflex / Weinschel

Figure 1. Front & Rear Panel Connectors

Model 8311 Attenuator Unit IM-303A

3-3.1 POWER ENTRY MODULE ASSEMBLY: The Power Entry Module Assembly located on the rear panel contains a three-prong ac power input connector and a fuse drawer assembly (Figure 1). The Fuse Drawer Assembly contains the line voltage fuse (Weinschel P/N 052-1-1.5). The Model 8311 uses a T 1.5A, 250 Vac fuse which is 5 x

20 mm in size. Refer to paragraph 8-4.1 for replacement of the fuse.

The AC Power Connector, located on the left side of XF1 (Figure 1), is a plug-type, prong insert connector with three conductors for connection of the power cord (P/N 068-21) to the Power Supply Assembly located within the Attenuator

Unit. This connector also grounds the chassis of the Attenuator Unit when the the ac power cord is connected to a grounded wall outlet. If necessary, use a three prong to two prong adapter and connect the adapter’s ground lead to the outlet plate retaining screw.

The Power ON/OFF Switch is located on the rear panel and in part of the Power Entry Module Assembly. Placing the

POWER ON/OFF switch in the ON position applies power to the instrument.

CAUTION

When applying an RF signal to the RF INPUT connector, DO NOT exceed the maximum allowable power level specifications of the Model 8311.

3-3.2. CHANNEL PORT CONNECTORS: A typical 8311 Series Attenuator Unit contains 12 standard D holes on the front and rear panel allowing for single or multichannel configurations. Standard Model 8311’s are supplied with two PLANAR CROWN

Type N connectors that can be mounted on the front or rear panel.

These connectors provide a input and output port where various types of RF signals can be applied to the devices internally mounted in the Model 8311 (Connector location specified by customer when ordering).

Some special configurations could contain Aeroflex / Weinschel’s Model 1568 SMA Panel Adapters or other types of crowns (see accessories for other types).

NOTE

The use of the PLANAR CROWN

connectors provide the user with easy exchange of connector types, which eliminates the need for adapters and other devices that would create additional insertion loss. This type of connector also provides quick removal and replacement of defective connectors.

For more information about the PLANAR CROWN

connectors contact the Sales Department at

Aeroflex / Weinschel, Inc.

Aeroflex / Weinschel 11

Model 8311 Attenuator Unit IM-303A

4. FRONT PANEL CONTROLS & INDICATORS:

The following paragraphs provide setup and general guidelines for operating the 8311 Series SmartStep

Attenuator Unit and its different bus configurations. Also provided is a general description of the internal circuitry of the

8311.

Figure 2. 8311 Series Front Panel

ENTRY keys: The numeric entry keys allow the user to directly enter numeric values. When using the keypad, values are not updated until the ENT (enter) key is pressed. The Minus (-) and CE (clear entry) functions may be accessed via first depressing the SHIFT key.

INCR & DECR : The INCR and DECR keys allow settings to be scrolled from their current value.

Unlike the ENTRY keys, the new setting is updated immediately without the use of the ENT key.

CHAN: Allows the selection of the current channel, as indicated by the CH1-CH4 indicators.

Repeated depressions of the CHAN key will select the next available channel. The main display will show the current setting of the channel. For configurations with 5 or more channnels, selecting the

CHAN key will display the current selected channel in the main display. Channels are then selected via the INCR and DECR keys.

REL: This key control allows the use of a relative mode for attenuators, as indicated by the REL mode indicator. When turned on, the currently displayed attenuation value is used as a reference value from which the attenuation may be set. In this mode, attenuation values may be positive or negative from the reference setting. When REL is turned off, the display returns to the actual attenuation setting for the channel.

STEP: This key allows the user to change the attenuation step size used by the INCR and DECR keys. When turned on, as, indicated by the STEP indicator, the current step size is displayed in the main display, and a new value may be entered using the INCR/DECR or ENTRY keys. The step size may be set to any multiple of the intrinsic step size for the currently selected channel.

MENU: Invokes the menu functions. Menu selections may be made via the INCR and DECR keys.

(NOTE: menu functions are currently not implemented as of 3/8/99)

AUX1/AUX2: The function of these keys is user-programmable via remote operation. They invoke any currently defined AUX1 and AUX2 macros. Refer to the macro programming section for information on creating macro definitions.

LOCAL: This key places the 8311 in local operation mode, unless the key function has been overridden via an IEEE-488.2 local lockout or execution of the LOCKOUT command.

ADDR: This key displays the current IEEE-488.2 address. The address may be changed from the front-panel, however, the initial setting at power on is derived from the rear-panel address switch.

Aeroflex / Weinschel 12

Model 8311 Attenuator Unit IM-303A

5. REMOTE OPERATION:

The following paragraphs provide setup and general guidelines for operating the Model 8311 using an external controller.

5-1. IEEE-488 INTERFACE BUS CONNECTOR: Joining the Model 8311-1 to a system controller requires the connection of IEEE-488 control bus cable to the IEEE-488 INTERFACE BUS connector located on the rear panel.

Figure 3 shows the connector’s contact pin numbering scheme and lists the signal designator for signal present at each contact pin.

PIN No.

SIGNAL LINE

DIO 1

DIO 2

DIO 3

DIO 4

5 EOI (24)**

6 DAV

7 NRFD

8 NDAC

PIN No.

SIGNAL LINE

DIO 5

DIO 6

DIO 7

DIO 8

REN (24)**

9 IFC

10 SRQ

11 ATN

12 SHIELD

* GND (N) refer to the signal ground return of the referenced pin.

** Return pin on pin 24.

Figure 3. IEEE-488 Interface Bus Pin Locations

5-2. GPIB ADDRESS/SERIAL COMMUNICATIONS SETTINGS: The GPIB Bus Address and Serial Communications options are programmed via an internal 8 position DIP switch SW1 which is located on the rear panel. The switch is shared between the two functions, with SW1-1 controlling the selection. When SW1-1 is OFF, the remaining switches set the GPIB bus address. Likewise, when SW1-1 is ON, the switches are used to select the various serial options, including baud rate, parity, and handshaking. Refer to Figure 4 for switch location.

Aeroflex / Weinschel 13

Model 8311 Attenuator Unit IM-303A

To configure the IEEE-488 bus address or serial communications parameters, select the appropriate switch setting using the tables located in below (Figure 4).

Aeroflex / Weinschel

Address:

GPIB SW1 Serial

Select

On = Serial parameters

Off = GPIB address

- - - 2 Echo

- - - 3 HndshkSel

Echo Echo Enable

On = Echo received data

Off = No echo

Handshaking Select

On = RTS/CTS

Off = XON/XOFF

A4 (16) 4 HndshkEna

A3 (8)

A2 (4)

A1 (2)

A0 (1)

ParitySel

ParityEna

BR1

BR2

Handshake Enable

On = Enabled

Off = Disabled

Parity Select

On = Odd

Off = Even

Parity Enable

On = Enabled

Off = Disabled

BaudRate Select (see below)

BaudRate Select

BR1 BR0 RATE

0 0 2400

0 1 9600

1 19200

1 1 38400

Note: The GPIB Bus address is selectable from 0 to 30 via the rear panel dip switch. This switch is factory set to 10.

IEEE-488 Address Truth Table

Switch 4 5 6 7 8

Figure 4. Internal Dip Switch

Model 8311 Attenuator Unit IM-303A

5-3. IEEE-488 (GPIB) Bus Operation

The internal functions of Model 8311 are controlled via an IEEE-488 bus and an external controller. The front panel LSN and RMT indicators (Figure 2) are used as status indicators for the Model 8311 SmartStep Interface’s

IEEE-488 bus operation. During bus operation a flashing LSN indicates that the Model 8311 is receiving. The RMT indicator is illuminated when the Model 8311 is in the remote state.

The table below summarizes the IEEE-488.1 interface functions that are implemented by the Model 8311.

Interface Function Subset Description

Fully implemented Source Handshake SH1

Acceptor

Handshake

Listener

Service Request

SR1

No extended addressing

All basic Listener functions.

No extended addressing

Fully implemented

Parallel Poll

Device Clear

Device Trigger

Controller

PP0

DC1

DT0

No Parallel Poll Capability

Fully implemented

No Trigger

No Controller Functions

Electrical Interface E2 All tri-state drivers

The GPIB interface of the 8311 is IEEE-488.2 compliant. The 8311 recognizes instructions and data sent via the GPIB interface in the form of program messages comprised of ASCII characters. A program message is comprised of a sequence of program message units separated by semicolons and terminated by a line terminator

(LINE END). A line terminator takes the form of an ASCII LF character (0AH), or an EOI signal asserted with the last data byte, or both. The 8311 program message units may be divided into two syntax groups: commands and queries.

Refer to the section on command syntax for more information.

Aeroflex / Weinschel 15

Model 8311 Attenuator Unit IM-303A

5-4. Serial Operation: The serial interface (RS232/RS422) provides a means of remotely programming the 8311 via external computer. The 8311 provides for user-selectable communications parameters via a DIP switch (SW1), including baud rate, data format, and handshaking method. LED indicators are provided for transmit (TX) and receive

(RX) activity. Selection between RS232/RS422 mode is controlled via an internal 4 position DIP switch SW2, which also provides for user-selectable 120 ohm terminations for the RS422 receiver lines. The RS422 mode transceivers are electrically compatible with RS485.

SW2 RS232 RS422

RS485

Description

Select On = Termination

Off = No Termination

Select On = Termination

Off = No Termination

On = RS232

Off = RS422

The data format includes a start bit, eight data bits, and one stop bit (N81). The Baud Rate may be set to

2400, 9600, 19200, or 34800. Parity selections include settings for None, Even, or Odd parity. Handshaking may be enabled, if desired, and the method may be set to either hardware (RTS/CTS) or software (XON/XOFF). For interactive terminal use, echoing may be enabled, in which the 8210A will echo all characters received back to the terminal.

All data and commands are encoded using the ASCII character set. The syntax for commands is the same as for GPIB operation, and uses the syntax structure defined by IEEE 488.2, with the exception of the command termination rules. Commands sent to the 8210A may be terminated with either an ASCII CR (0x0D) or ASCII LF

(0x0A) character. By default, all responses from the 8210A are terminated in an ASCII CR/LF sequence (0x0D followed by 0x0A).

Software handshaking uses the XON/XOFF scheme in which an ASCII DC3 (0x13) character is transmitted by the receiver to indicate that data transmission should be halted (XOFF), and an ASCII DC1 (0x11) character is transmitted to indicate that data transmission may continue (XON). Hardware handshaking utilizes the RTS and CTS lines. When the RTS output signal is asserted true, the unit is ready for data. This signal should be connected to the external computer's CTS input signal, so that when the receiver is ready, the transmitter may send data. When the unit is not ready for data, it unasserts the RTS signal, halting data transmission. Likewise, the unit monitors the CTS input signal during data transmission, halting transmission if the external computer unasserts it's RTS signal. In addition, the 8311 unasserts the RTS signal while command execution is in progress.

For those systems incorporating local front panel controls, the serial port can lockout local users, providing a Remote/

Local function similar to that of GPIB operation.

Aeroflex / Weinschel 16

Model 8311 Attenuator Unit IM-303A

5-4.1. RS-232 Operation: The RS-232 Serial port is a 9-pin connector that is compatible with the pin-out of the serial port on a PC. It allows the use of a null-modem style cable. The pin-out for the connector is show below. For clarity, the signal names and directions are relative to the 8311.

DCD

RxD

TxD

DTR

GND

DSR

RTS

CTS

RI unused

Receive data

Transmit data

Signals DTE is on-line

Ground unused

Signals DTE is ready

Signals DCE is ready unused

The DTR signal is asserted when power is on, indicating that the unit is ready.

--- input output output

---

--- output input

---

RS232

9-pin DB9

Pinout

DSR

RTS

CTS

DCD

RxD

TxD

DTR

GND

Null Modem Cable

Aeroflex / Weinschel 17

Model 8311 Attenuator Unit IM-303A

5-4.2. RS-422/485 Operation: The RS-422/RS-485 Serial mode is useful in applications requiring long cable lengths

(up to 5000 ft at 9600 baud), or in electrically noisy environments. All communication parameters available for the

RS232 port are also available under RS-422 operation (baud rate, handshaking, etc). Full Duplex operation is supported. The RS-422 port utilizes a 9-pin connector. The pin-out for the connector is show below. For clarity, the signal names and directions are relative to the 8311.

TxD+

CTS+

RTS-

CTS-

RTS+

Transmit data

Clear To Send

Request To Send

Clear To Send

Request To Send output input output

input output

RS422

9-pin DB9 Pinout

CTS+

RTS -

CTS -

RTS+

RXD+

RXD-

TXD-

TXD+

GND

Aeroflex / Weinschel 18

Model 8311 Attenuator Unit IM-303A

5-5. Status Reporting

The 8311A implements the 488.2 Status Reporting Structure, which utilizes the IEEE488.1 status byte with additional data structures and rules. The Status Byte Register can be read with either a serial poll (IEEE-488 operation only) or the *STB? common query command. The Service Request Enable Register (SRE) allows the user to select which bits in the Status Byte Register may cause service requests. A bit value of one indicates that the corresponding event is enabled, while a bit value of zero disables an event. The Service Request Enable Register may be accessed with the *SRE and *SRE? common commands. The Status Byte Register may be cleared with the

*CLS common command, with the exception of the MAV bit, which is controlled by the operation of the Output Queue.

The SRE Register is set to 0 at power-on, disabling all events.

Status Byte Register/ Service Request Enable Register Formats

D7 D6 D5 D4 D3 D2 D1 D0

RQS ESB MAV EEQ

Bit Mnemonic Description

RQS

ESB

MAV

EEQ

Request Service: This bit, if set, indicates that the device is asserting the SRQ signal.

Event Status Bit: This bit is true when an enabled event in the Event Status Register is true.

Message Available: This bit is true when there is valid data available in the output queue.

Error/Event Queue: This bit is true when there is Error/Event data available in the

Error/Event queue.

The Standard Event Status Register is used to report various IEEE 488.2-defined events. The register contents may be accessed with the *ESR? command. An Event Status Enable Register allows the user to select which bits in the ESR that will be reflected in the ESB summary message bit of the Status Byte Register. The Event

Status Enable Register may be accessed with the *ESE and *ESE? common commands. The Event Status Register is cleared by an *ESR? query or *CLS common command. The ESE Register is set to 0 at power-on, disabling all events.

Standard Event Status Register/ Standard Event Status Enable Register Formats

D7 D6 D5 D4 D3 D2 D1 D0

ON URQ CME EXE DDE QYE RQC OPC

Bit Mnemonic

PON

URQ

CME

Description

Power On: This bit indicates that the device has powered-on

User Request: This event bit indicates that a local control is causing a

User Request

Command Error: The parser has detected a syntax error in the current command.

4 EXE

DDE

QYE

RQC

OPC

Execution Error: The command could not be properly executed due to an illegal input range or other inconsistent data.

Device Dependent Error: A command could not properly complete due to some device specific error

Query Error: This bit indicates that either an attempt has been made to read data when there was none present, or that data in the Output Queue has been lost

Request Control: The device is requesting control (not implemented)

Operation Complete: This bit is generated in response to an *OPC command. It indicates that the ITS 2000 has completed all pending operations.

Aeroflex / Weinschel 19

Model 8311 Attenuator Unit IM-303A

The Status Reporting Registers may be used for serial communications, with certain limitations. The Status

Byte Register can only be read via the *STB? query command, as the comm port does not provide for a serial poll operation. Also, as data in the Output Queue is sent automatically during serial operation, the MAV message available bit in the STB serves no purpose.

5-6. GENERAL SYNTAX STRUCTURE: The following paragraphs outline the general syntax and command structure for the Model 8311. This structure is common to all bus flavors of the Model 8311.

NOTE

In the descriptions that follow, the term whitespace is used to define a sequence of one or more combinations of ASCII Space (20h), Carriage return (0Dh), or

Tab (09h) characters.

5-6.1 SYNTAX OF QUERIES: A query message unit is made up of a query header ending in an ASCII question mark character ’?’ (3FH), followed by optional whitespace, and ended by a program message terminator. To form a multiple query, separate the individual program message units with a semicolon.

Examples : "ATTN?"

"ASSIGN?" b. Multiple Query Commands:

"ATTN?; ASSIGN?"

5-6.2 SYNTAX OF COMMANDS: A command message unit is made up of a command header, optionally followed by an argument and units, and ended by a program message terminator. If multiple commands are made on the same program line, separate the individual command messages with a semicolon.

Arguments - The 8311 supports a variety of argument types that can be used in program commands.

These types are:



Character Program Data



Integer Numeric Program Data



Real Numeric Program Data

Each data type has its own rules of syntax. The following paragraphs provide the syntax rules for each of the argument types listed above.

Character Program Data-This data type is comprised of the set of printable ASCII characters (excluding those used as delimiters). Character program data represents alpha or alphanumeric strings. The use of alpha characters is case-insensitive. If the first character of the string is not an alpha character, then the string must be delimited with either the ASCII single-quote (’) or double-quote (") character in order to distinguish the string from a numeric data type.

Examples: ATTEN1

"150T"

Integer Numeric Program Data-This data type is used to represent integer, binary, or hexidecimal numeric information, all of which may be used interchangeably. Integer data is comprised of the numeric digits ’0’-’9’, binary data is comprised of the digits ’0’ and ’1’ preceded by the characters ’#B’, and hexidecimal data is comprised of the digits ’0’-’9’, and the letters ’A’-’F’, preceded by the characters ’#H’ or the C language style prefix ’0x’.

Examples: 123 (integer)

#H55 (hex)

0xAA (hex)

#B1010 (binary)

Aeroflex / Weinschel 20

Model 8311 Attenuator Unit IM-303A

Real Numeric Program Data-This data type includes decimal numbers containing a sign, decimal point, and/or an exponent. The format is as follows: [sign]digits[.[digits][E[sign]digits]]

Examples: 2

2.5

-35.25E+2

In the command descriptions that follow, argument types are also described using the following additional conventions to indicate the relative size of the parameter: byte word int8 int16 int32 string

- used to indicate an 8-bit unsigned integer

- used to indicate a 16-bit unsigned integer

- 8-bit integer

- 16-bit integer

- 32-bit integer

- character data, including the max number of characters allowable.

(i.e., string8 has a max of 8 chars)

5-6.3 OUTPUT DATA FORMAT: Output data from the Model 8311 consists of a series of ASCII digits and message strings, terminated with an ASCII Line-Feed character (0AH), in response to a program message that contains one or more query commands. In the case of multiple query commands in the same program message, the data resulting from each of the individual message units will be separated by an ASCII comma (2CH) character.

5-6.4 NOTATIONAL CONVENTION.

[ ] Brackets indicate optional arguments or parameters.

{ } One and only one of the enclosed entries must be selected unless the field is also surrounded by brackets, in which case it is optional.

... Ellipses indicate that the preceding argument or parameter may be repeated.

[,...] The preceding item may be repeated, but each repetition must be separated by a comma.

Aeroflex / Weinschel 21

Model 8311 Attenuator Unit

5-8. 488.2 COMMON COMMANDS

*CLS Function:

Syntax:

Clears the Status Byte and Event Status Registers.

*CLS

Argument(s): none

Remarks:

This function is used to clear the Status Byte and the Event Status Registers.

Return Value: none

Example(s):

*CLS

*ESE

*ESE?

*ESR?

*SRE

*SRE?

*STB?

*IDN?

Aeroflex / Weinschel

IM-303A

Function:

Sets the Event Status Enable Register.

Syntax: *ESE mask

Argument(s): mask integer bitmask

Remarks:

This function is used to set the Event Status Enable Register to the value specified by mask.

Return Value: none

Example(s):

*ESE 255

Function:

Reads the Event Status Enable Register.

Syntax:

*ESE?

Argument(s): none

Remarks:

This function is used to read the Event Status Enable Register.

Return Value: mask integer register mask

Example(s): *ESE? returns the following ’255’

Function:

Syntax:

Reads the Event Status Register

*ESR?

Argument(s): none

Remarks:

This function is used to read the Event Status Register. Reading the register clears it.

Return Value: reg integer register

Example(s):

*ESR? returns the following ’128’

Function:

Syntax:

Sets the Status Byte Enable Register

*SRE mask

Argument(s): mask integer bitmask

Remarks: This function is used to set the Status Byte Enable Register to the value specified by mask.

Return Value: none

Example(s):

*SRE 255

Function:

Syntax:

Reads the Status Byte Enable Register.

*SRE?

Argument(s): none

Remarks:

This function is used to read the Status Byte Enable Register.

Return Value: mask integer register mask

Example(s):

*SRE? returns the following ’255’

Function:

Reads the Status Byte Register.

Syntax: *STB?

Argument(s): none

Remarks:

This function is used to read the Status Byte Register.

Return Value:

reg integer register

Example(s):

*STB? returns the following ’96’

Function:

Remarks:

Reads the system identification information.

Syntax:

*IDN?

Argument(s): none

This function is used to read the system identification information, which is a string consisting of the following data: manufacturer, model, serial number, and firmware version.

Return Value: mfg integer count of devices

Example(s):

*IDN? returns the following ’Weinschel,8311 Series, 123, 1.00A’

Model 8311 Attenuator Unit

*RST

*OPC

*OPC?

*WAI

IM-303A

Function:

Remarks:

Performs a device reset.

Syntax:

*RST

Argument(s): none

This function is used to reset the device.

Return Value: none

Example(s):

*RST

Function:

Syntax:

Operation complete service request.

*OPC

Argument(s): none

Remarks:

This function generates the Operation Complete message (OPC) in the Standard Event Status

Return Value: none

Example(s):

*OPC

Function:

Remarks:

Operation complete query

Syntax:

*OPC?

Argument(s): none

This function loads a ’1’ into the output queue when the Program Message Unit is executed. Its primary use is to provide an indication of command completion by including the command as the last one in a series of commands.

Return Value:

1 integer command completed

Example(s):

SAVE ASSIGN; *OPC? returns a ’1’ when the SAVE ASSIGN command completes.

Function:

Syntax

Wait To Continue

*WAI

Argument(s): none

Remarks: This function prevents the8311 Series from executing any further commands or queries until there are no pending operations. The 8311 Series executes all commands sequentially, and does not allow overlapping commands.

Return Value: none

Example(s):

*WAI

Aeroflex / Weinschel 23

Model 8311 Attenuator Unit

5-9. GENERAL COMMANDS:

CHAN

CHAN?

ATTN

Function:

Syntax:

Argument(s):

Remarks:

Return Value:

Example(s):

Function:

Syntax

Argument(s)

Remarks:

Return Value:

Example(s):

Function:

Syntax:

Argument(s):

Remarks:

Return Value:

Example(s):

ATTN?

REL

REF

REF?

Function:

Syntax:

Argument(s):

Remarks:

Return Value:

Example(s):

Function:

Syntax:

Argument(s):

Remarks

Return Value:

Example(s):

Function:

Syntax:

Argument(s):

Remarks: setting.

Return Value:

Example(s):

Function:

Syntax:

Argument(s):

Remarks:

Return Value:

Example(s):

IM-303A

Selects the currently active channel

CHAN chnum chnum integer channel number

This function is used to select the currently active channel. none

CHAN 1

Reads the current channel number

CHAN? none

This function is used to read the currently active channel number. chnum integer current channel number

CHAN? returns ’1’

Set attenuation

ATTN atten atten real desired value, in dB

This function sets the attenuation of the currently selected channel to atten. none

ATTN 63

ATTN 12.25

ATTN 45.0

Read attenuation

ATTN? none

This function reads the attenuation of the currently selected channel. atten real attenuation value, in dB

ATTN? returns ’63.00’

Sets relative display mode for the current channel

REL mode mode integer relative mode on/off

This function is used to set the relative display mode of operation for the current channel.

A value of 0 for the parameter mode will turn relative mode off, while a value of 1 will turn relative mode on. none

REL 1

Sets reference

REF none

This function sets the reference value for the active channel to the current attenuation

This command is used for the REL and RELATTN functions. none

REF; REL 1 sets the reference, and turns on relative mode

Read reference setting

REF? none

This function reads the reference setting of the currently selected channel. refatten real reference attenuation value, in dB

REF? returns ’30.00’

Aeroflex / Weinschel 24

Model 8311 Attenuator Unit

RELATTN

RELATTN?

STEPSIZE

STEPSIZE?

INCR

DECR

Function:

Syntax:

Argument(s):

Remarks:

Return Value:

Example(s):

Function:

Syntax:

Argument(s):

Remarks:

Return Value:

Example(s):

Function:

Syntax:

Argument(s):

Remarks:

Return Value:

Example(s):

Function:

Syntax:

Argument(s):

Remarks:

Return Value:

Example(s):

Function:

Syntax:

Argument(s):

Remarks:

Return Value:

Example(s):

Function:

Syntax:

Argument(s):

Remarks:

Return Value:

Example(s):

IM-303A

Sets attenuation relative to the reference setting

RELATTN atten atten real desired value, in dB

This function sets the attenuation of the currently selected channel to atten, relative to the reference value set when the REL command was executed. none

RELATTN 10 increases the attenuation setting 10dB from the reference setting RELATTN decreases the attenuation setting by 10dB from the reference setting 15.

Read relative attenuation of the current channel

RELATTN? none

This function reads the relative attenuation of the currently selected channel.

relatten real relative attenuation value, in dB

RELATTN? returns ’-10.00’

Sets attenuation stepsize for the current channel

STEPSIZE atten atten real desired stepsize value, in dB

This function sets the attenuation stepsize for the INCR and DECR commands for the current channel to atten. The default value of the attenuator’s stepsize is the intrinsic resolution of the attenuator, i.e., a 127dB/1dB step attenuator has a default stepsize of 1dB. none

STEPSIZE 10 changes the stepsize to 10dB

Read attenuation stepsize

STEPSIZE? none

This function reads the attenuation stepsize of the current channel.

atten real attenuation stepsize value, in dB

STEPSIZE? returns ’10.00’

Increments attenuation

INCR none

This function increments the attenuation setting of the current channel by the value of the attenuator’s programmed stepsize (see STEPSIZE command). none

INCR

Decrements attenuation

INCR none

This function decrements the attenuation setting of the current channel by the value of the attenuator’s programmed stepsize (see STEPSIZE command). none

DECR

Aeroflex / Weinschel 25

Model 8311 Attenuator Unit

6. GENERAL CIRCUIT DESCRIPTION:

IM-303A

This section contains general descriptions and systematic explanation of the Model 8311’s design and internal circuitry. Standard 8311 Series SmartStep Attenuator Units contain internal circuitry to control a variety of

Aeroflex / Weinschel programmable attenuators (3200T, 150T, and 4200 Series) via front panel controls or standard communications interfaces including GPIB (IEEE-488) and RS-232/RS-422 /RS485. Figure 5 provides a simplified block diagram of the 8311’s internal circuitry.

Figure 5. 8311 Series Simplifed Block Diagram

6-1. POWER SUPPLY ASSEMBLY: The Model 8311 contains a high-efficiency switching type Power Supply

Assembly (A3) which will operate with a 100 to 240 Vac input power source. The input power source is routed thru the

Power Entry Module Assembly (XF1) before being applied to the Power Supply Assembly. The Power Entry Module

Assembly allows the user to select between the two operational voltage ranges that can be accepted by the Power

Supply Assembly. This Switching Power Supply provides the Model 8311 with +15 ±0.75 V @ 3.3 A outputs. These outputs are then routed to the SmartStep Interface Assembly for distribution to the other assemblies located in the

Model 8311. Drawing 193-8102 & 193-8114 shows the actual power distribution for all assemblies and modules located in the 8311.

6-2. STATUS DISPLAYS AND SWITCH CONTROL ASSEMBLY. This assembly located behind the front panel contains a group of LED’s that indicates the status of bus operation and channel/port selection . The Switch/LED

Status PCB Assembly contains control switches which are used to set the GPIB address information, selected desired port/channel, select the mode of operation (Local or Remote) and manually control and enter parameters for devices installed in the Model 8311. These control switches operate in a toggle fashion, i.e., push for ON and push for OFF.

Refer to Section 5 for an operational description of each LED and switch located on the front panel.

6-3. SmartStep INTERFACE ASSEMBLY: This assembly is responsible for programming and control of the Driver

PCB Assembly, GPIB bus operation, and front panel Switch/LED control. The Smartstep Interface Assembly provides a high-level interface from a standard communications interface including GPIB (IEEE-488) and RS-232/RS-

422/RS485, to the 8311 SmartStep’s serial Driver Interface Bus. The Device Interface Bus (DIB) is a system for connecting a number of relatively low-speed I/O devices to a host, providing a simple, uniform, and inexpensive way to control a variety of devices via a single port. The DIB is based on the two-wire I 2 C serial bus and several software protocol layers that allow the Smartstep Interface Assembly to address the internal devices, with serial data rates of up to 100 KHz. The DIB may also be used to supply DC power to other devices that may be installed in custom applications, resulting in a simple, low-cost interconnection system.

Aeroflex / Weinschel 26

Model 8311 Attenuator Unit IM-303A

6-4. RF SECTION: Most Standard 8311 Series are single channel configurations where RF signal is routed through either the front or rear mounted Ports A & B connector (Ports A-A if the RF is routed front to rear) to a single or multiple Weinschel programmable attenuators (3200T, 150T, or 4200 Series) thus creating CH1 (Channel 1). Note that when a Port is in use the Port indicator will be illuminated. Dual channel units typically use Ports A and B for CH1 and Ports C and D for CH2 (Ports A-A if the RF is routed front to rear for CH1 and Ports B-B for CH2). Multi-channel

(3-4) units are generally routed front to rear and configured as follows:

CH1 Port A (Front) to Port A (Rear)

CH2 Port B (Front) to Port B (Rear)

CH3 Port C (Front) to Port C (Rear)

CH4 Port D (Front) to Port D (Rear)

For specialized configurations refer to supplemental information in the front of this manual for details.

Typically Aeroflex / Weinschel programmables are bi-directional and the RF signal can be applied to either

Port connector. Refer to the individual data sheets located in the Appendix C for detailed and specific specifications pertaining to the internal mounted attenuators. Refer to the replaceable parts list for actual programmable attenuator part/model number.

Special configurations exist where the RF section is designed to specific customer requirements that contain signal programmable attenuators with custom attenuation ranges and step sizes to multiple programmables used inconjuction with other coaxial devices such as switches, power combiners, directional couplers, and filters creating single or multi-channel subsystems. All specialized 8311 series units will contain a supplement located in the front of this manual that outlines detailed configuration, operation and parts list for these Attenuator Units.

Aeroflex / Weinschel 27

Model 8311 Attenuator Unit

7. MAINTENANCE:

IM-303A

The following paragraphs provide general inspection and maintenance guide lines for the 8311 Series

SmartStep Attenuator Units.

7-1. INSPECTION: Perform a visual inspection in conjunction with the maintenance activities schedule when a malfunction is suspected, or whenever an assembly is removed or replaced.

7-2. PREVENTIVE MAINTENANCE: While the 8311 requires very little preventive maintenance, it should not be subjected to physical abuse, severe mechanical shock, high humidity, or operating temperatures outside the specification range. The instrument should be kept free of excessive dirt and dust, since these can interfere with connector functions and with normal heat dissipation. For cleaning instructions refer to paragraph 7-3 (special cleaning instructions). The following paragraphs provide the preventive maintenance that is to be performed on the

Unit.

Care should be taken to prevent strain on the interconnecting cables, since damage here may not always be apparent. Occasionally check the external cables and connectors for signs of cracked insulation and/or bent or worn pins. Tests show that connectors must be clean for accuracy and stability. This requires an inspection and cleaning of each connector immediately before use. For connector cleaning instructions, refer to paragraph 4-3. When cleaning precautions are observed regularly, connectors can maintain their stability for over several thousand connection cycles. Refer to Appendix A for more information about cables and connectors.

7-3. SPECIAL CLEANING INSTRUCTIONS: The cleaning procedures for 8311 are divided into five general groups: microwave coaxial cable assemblies, circuit card and modules; machined surfaces and hardware, chassis cleaning, and connector cleaning.

7-3.1. MICROWAVE COAXIAL CABLE ASSEMBLIES: Appendix A (located at the end of this manual) provides all the necessary procedures for care, cleaning, and handling of microwave coaxial cable assemblies.

7-3.2 CIRCUIT CARDS AND MODULES: A protective coating is applied to circuit cards for protection from moisture, arcing, short-circuiting, and abrasion. To remove light dirt from circuit cards and modules proceed as follows:

CAUTION

 DO NOT use a nylon bristle brush in the solvent as the bristles may dissolve and cause damage to the circuit card or component.

 DO NOT use ultrasonic cleaning on parts or assemblies containing electrical or electronic components.

 DO NOT bend pins of electrical connectors when using fiber-bristle brush. a. Briskly brush isopropyl alcohol onto area to be cleaned with fiber-bristle brush. b. Carefully remove residue with a clean lint-free cloth and repeat step "a" as a rinse.

WARNING

Compressed air used for cleaning and/or drying can create airborne particles that may enter the eye. Goggles/ face-shields should be worn. DO NOT direct air stream towards self or other personnel. Pressure should be restricted to a maximum 15 psi to avoid personal injury. c. When parts are thoroughly clean, dry parts using 5 psi of clean moisture free compressed air or preferably dry nitrogen (pressurized spray will work well).

Aeroflex / Weinschel 28

Model 8311 Attenuator Unit IM-303A

7-3.3 MACHINED SURFACES AND HARDWARE: To remove light dirt and dust from mechanical parts such as castings, covers and other hardware proceed as follows:

WARNING

CAUTION

 Under no circumstances use a wire brush, steel wool, or abrasive compound. Using these items will cause extensive damage to the instrument's surface.

 DO NOT use a nylon bristle brush in solvent as the bristles may dissolve and cause damage to the circuit card or component. a. Use 5 psi of clean, moisture-free compressed air or preferably dry nitrogen to blow loose dirt and dust from surface of item. b. Briskly brush isopropyl alcohol onto area to be cleaned with a fiber-bristle brush. c. Remove residue with lint-free cloth and repeat step "b" as a rinse. d. When parts are thoroughly clean, dry parts using 5 psi of clean, moisture-free compressed air or preferably dry nitrogen. e. Clean smaller mechanical parts or hardware by dipping into a container of isopropyl alcohol. Remove dirt by brushing with fiber-bristle brush after parts have been immersed for several hours. f. Remove parts from isopropyl alcohol and rinse by immersing into a different container of isopropyl alcohol. g. When parts are thoroughly cleaned, dry parts using 5 psi of clean, moisture-free compressed air or preferably dry nitrogen.

7-3.4 CHASSIS CLEANING: Clean chassis using a lint-free cloth moistened with water and mild detergent. For harder to clean areas, such as inside corners of chassis, use a vacuum cleaner.

7-3.5 CONNECTOR CLEANING: Where small amounts of rust, corrosion, and/or oxide deposits are present on connectors, clean externally with a soft-bristle brush, aluminum wool, or internally with an acid brush; then wash with a non-corrosive solvent. MIL-C-83112 is recommended. Exercise care to ensure no metal filing or residue remains inside the connector and the connector is thoroughly dry. Where rust, corrosion, and/or oxide deposits are present in large quantities, replace the connector.

Aeroflex / Weinschel 29

Model 8311 Attenuator Unit IM-303A

7-4. LINE VOLTAGE FUSE REPLACEMENT: The following steps provide procedures to replace the line voltage

Fuse Assembly. This unit accepts a F1.5A, 250 Vac fuse for 115 Vac.

WARNING

Sufficient power levels are present at the Power Input Assembly to cause personal injury.

Ensure that the instrument power cord is DISCONNECTED before attempting to change fuses.

CAUTION

DO NOT connect or apply power to this instrument until the Power Entry Module

Assembly has been adjusted to the operational line voltage. a. Disconnect the power cord from the Power Entry Module Assembly. b. Use a small screwdriver to carefully open the Fuse Drawer. c. Slide out Fuse Drawer located in the center of the Power Entry Module Assembly. d. Remove defective fuse and replace with the correct fuse (Refer to applicable parts list for fuse part number). e. Snap the Fuse Drawer shut and re-connect ac power cord.

Aeroflex / Weinschel 30

Model 8311 Attenuator Unit

8. REPLACEABLE PARTS LIST:

IM-303A

This section lists and describes the parts located in Standard 8311 Series SmartStep Attenuator Units (P/N

193-70XX-X). The Replaceable Parts Lists (RPL) are intended for use in identifying, locating, and requisitioning assemblies and components for the Model 8311.

8-1 UNDERSTANDING REFERENCE DESIGNATORS: All assemblies and electrical parts are identified by standard reference designators (resistors R1, for example). Reference designators are used in parts lists and on parts identification drawings. The title of a parts list or drawing contains the reference designator or the assembly or subassembly to which it applies. The designators in the parts list, as a prefix, but omitted from the list to make it easier to locate a specific part. To complete a reference designator in a parts list, precede the designator for the specific part (DS1, for example) with the designator in the title (A6, for example) to form a complete reference designator for the part (in this case, A6DS1).

8-2 ORDERING INFORMATION: When ordering parts from Weinschel, please include the following information:

 AEROFLEX / Weinschel part number.

 Description of the component or part.

 Model and serial number of the instrument.

 Assembly number and assembly revision (if any) from the assembly

(this information is on the component side of the PCB).

8-3 DRAWING NUMBER: The Aeroflex / Weinschel part number consists of a basic number with a dash number. The basic number should cross reference to a drawing number for most of the items. For those items that do not have a drawing number, the manufacturers part number is provided.

8-4 REPLACEABLE PARTS LIST (RPL): This RPL contains a breakdown of the instrument into its major assemblies and detailed parts. The following paragraphs describe the contents of each column of the RPL.

8-4.1 REFERENCE DESIGNATOR: This column contains reference designations arranged in alphanumerical sequence. The letters A thru Z have precedence, followed by numerals 0 thru 9. In addition to the reference designators that are listed, some mechanical parts are also listed. These items lack reference designators and are included because they are considered subject to wear and/or breakage, or because they are custom (non-standard) hardware or parts that might become lost or damaged. This column contains the word N/A for those items or parts not having a reference designator.

8-4.2 DESCRIPTION: This column contains the nomenclature located in the title block of the engineering drawing by the designing activity. The noun name is listed first, followed by modifiers and descriptive information to completely identify the part or assembly.

8-4.3 PART NUMBER: This column contains the Weinschel part number assigned to an assembly, sub-assembly, or detailed part. This also includes Weinschel numbers for specification control, source control, and altered items drawings.

8-4.4 VENDOR PART NO.: This column contains manufacturers part numbers for those parts Weinschel purchases, as off the shelf items and assigns Weinschel part numbers for internal control only. These parts may be ordered through the manufacturer or through Weinschel by the Weinschel part number.

8-4.5 CAGE CODE: This column provides the Commercial and Government Entity (CAGE) code on the same line as the applicable part number. Codes, names, and addresses of venders with an assigned CAGE are listed in Cataloging

Handbook H4-1 and H4-2. Vendors that have not been assigned CAGE codes by the government are identified by the word NONE in this column. The names and addresses of these venders can be obtained from Weinschel. Part numbers that have no CAGE numbers listed are manufactured or altered by Weinschel.

8-4.6 ASSEMBLY AND COMPONENT LOCATION: The assembly/component location and schematic diagrams for the different 8311 series models are located in rear of this manual by the drawing number. Drawing find numbers have also been included to help locate components or hardware.

Aeroflex / Weinschel 31

Model 8311 Attenuator Unit

8311-1-6-R, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7301-1, Rev. A):

Find

No.

Part Number

193-8051

193-9207

3250T-63

074-912

193-8096

068-56-15/0

193-8049

193-8117

NAS662C2R5

NAS1635-04LR4

090-445

090-354

074-889-4

068-56-11/0

089-3594

193-8114

IM-303

Description

ASSY, BASE UNIT, MODEL 8311

MOUNTING PLATE

ATTEN PRGM, 63dB/1dB STEPS

75 OHMS

KIT, RACK MOUNTING

W/O HANDLES 3.5 H

OVERLAY, FRONT PANEL

COAXIAL CABLE ASSY, BNC MALE

TO FEMALE BULKHEAD, 75 OHM

OVERLAY, PANEL, BLANK

ASSY, CABLE, CNTRL

TO ATTEN (6 ATTEN)

SCR FLAT HD 2-56 X 5/16 LG 100

SCR PAN HD SELFLOCK

4-40 X 1/4

* LABEL, REFERENCE

INSTRUCTION MANUAL

* LABEL WARNING, HIGH VOLTAGE

LABEL, THERMAL TRANSFER,

PERM MTLZ POLTEST,1.50 X .75IN

COAXIAL CABLE ASSY, BNC MALE

TO FEMALE BULKHEAD, 75 OHM

ICD, MULTI-CHANNEL UNIT,

MODEL 8311-1-XX

WIRING DIAGRAM, MODEL 8311

O & S, ATTEN UNIT, MODEL 8311

Quantity

Used

Reference

Designator

CAGE

Code

IM-303A

Vendor

Part Number

AT1 - AT6

W8, W10,

W12, W14

24803

93459

NA BRADY

W9, W11,

W13, W15,

W17, W19

93459

K2RMX-001A

B068-56/15/0

THT-6-428-10

B068-56-11/0

Refer to Aeroflex / Weinschel Drawing 193-7301-1, Rev. A for parts location.

Aeroflex / Weinschel 32

Model 8311 Attenuator Unit

8311-1-6-F, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7301-2, Rev. A):

Find

No.

Part Number

193-8051

193-9207

3250T-63

074-912

193-8096

068-56-15/0

193-8049

193-8117

NAS662C2R5

NAS1635-04LR4

090-445

090-354

074-889-4

068-56-11/0

089-3594

193-8114

IM-303

Description

ASSY, BASE UNIT, MODEL 8311

MOUNTING PLATE

ATTEN PRGM, 63dB/1dB STEPS

75 OHMS

KIT, RACK MOUNTING

W/O HANDLES 3.5 H

OVERLAY, FRONT PANEL

COAXIAL CABLE ASSY, BNC MALE

TO FEMALE BULKHEAD, 75 OHM

OVERLAY, PANEL, BLANK

ASSY, CABLE, CNTRL

TO ATTEN (6 ATTEN)

SCR FLAT HD 2-56 X 5/16 LG 100

SCR PAN HD SELFLOCK

4-40 X 1/4

* LABEL, REFERENCE

INSTRUCTION MANUAL

* LABEL WARNING, HIGH VOLTAGE

LABEL, THERMAL TRANSFER,

PERM MTLZ POLTEST,1.50 X .75IN

COAXIAL CABLE ASSY, BNC MALE

TO FEMALE BULKHEAD, 75 OHM

ICD, MULTI-CHANNEL UNIT,

MODEL 8311-1-XX

WIRING DIAGRAM, MODEL 8311

O & S, ATTEN UNIT, MODEL 8311

Quantity

Used

Reference

Designator

CAGE

Code

IM-303A

Vendor

Part Number

AT1 - AT6

W8, W10,

W12, W14

24803

93459

K2RMX-001A

B068-56/15/0

NA BRADY

W9, W11,

W13, W15,

W17, W19

93459

THT-6-428-10

B068-56-11/0

Refer to Aeroflex / Weinschel Drawing 193-7301-2, Rev. A for parts location.

Aeroflex / Weinschel 33

Model 8311 Attenuator Unit

8311-38-6-F, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7302-2, Rev. B):

Find

No.

Part Number

193-8051

193-8039

3206T-1

074-912

193-8096

068-32-13/0

193-8049

193-11347

063-408

193-8116

MS24693-C3

NAS1635-04LR4

090-445

090-354

074-889-4

068-32-6/0

089-3584

193-8114

IM-303

Description

ASSY, BASE UNIT, MODEL 8311

MOUNTING PLATE

ATTEN PRGM, SMARTSTEP

KIT, RACK MOUNTING

W/O HANDLES 3.5 H

OVERLAY, FRONT PANEL

COAXIAL CABLE ASSY, SMA M/

TYPE N FEMALE, CONFORMABLE,

DC-11GHz

OVERLAY, PANEL BLANK

SPACER, CONN, 12 POS

N -TYPE, CONNECTOR

ASSY, CABLE, CNTRL TO ATTEN

(6 ATTEN)

SCR FLAT HD 4-40 X 5/16 LG 100

SCR PAN HD SELFLOCK 4-40 X 1/4

* LABEL, REFERENCE

INSTRUCTION MANUAL

* LABEL WARNING, HIGH VOLTAGE

LABEL, THERMAL TRANSFER,

PERM MTLZ, POLTEST,1.50 X .75IN

COAXIAL CABLE ASSY, SMA M/

TYPE N FEMALE, CONFORMABLE,

DC-11GHz

ICD, MULTI CHANNEL UNIT,

MODEL 8311-38-12-T

WIRING DIAGRAM, MODEL 8311

O & S, ATTEN UNIT, MODEL 8311

Quantity

Used

Reference

Designator

CAGE

Code

IM-303A

Vendor

Part Number

AT1 - AT6

W8, W10,

W12, W14,

W16, W18

24803

W9, W11,

W13, W15,

W17, W19

BRADY

93459

K2RMX-001A

THT-6-428-10

068-50-6/0

Refer to Aeroflex / Weinschel Drawing 193-7302-2, Rev B for parts location.

Aeroflex / Weinschel 34

Model 8311 Attenuator Unit

8311-38-12-T, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7302-8, Rev. D):

Find

No.

Part Number Description Quantity

Used

Reference

Designator

CAGE

Code

193-8051

193-8039

3206T-1

074-912

193-8047

068-32-8/0

193-8052

193-8106

193-8107

193-8105

MS24693-C3

193-11347

NAS1635-04LR4

063-408

090-445

090-354

074-889-4

068-32-6/0

IM-303

193-8114

089-3584

ASSY, BASE UNIT, MODEL 8311

MOUNTING PLATE

ATTEN PRGM, SMARTSTEP

KIT, RACK MOUNTING

W/O HANDLES 3.5 H

OVERLAY, FRONT PANEL, TYPE N

COAXIAL CABLE ASSY,

SMA M/TYPE N FEMALE,

CONFORMABLE, DC-18 GHz

OVERLAY, REAR PANEL, TYPE N

MOUNTING PLATE, ATTEN

ASSY, CABLE, CNTRL

TO ATTEN (12 ATTEN)

SCR PAN HD 4-40 X 5/16 LG

SPACER, CONN, 12 POS

SCR PAN HD 4-40 X 5/16 LG

N -TYPE, CONNECTOR

* LABEL, REFERENCE

INSTRUCTION MANUAL

* LABEL WARNING, HIGH VOLTAGE

LABEL

COAXIAL CABLE ASSY

SMA M/TYPE N FEMALE,

CONFORMABLE, DC-18 GHz

O & S, ATTEN UNIT, MODEL 8311

WIRING DIAGRAM, MODEL 8311

ICD ATTEN UNIT, MODEL 8311

W8-W15

W25, W27,

W29, W31

AT1-AT12

W16-W23

W24, W26,

W28, W30

24803

93459

IM-303A

Vendor

Part Number

K2RMX-001A

068-50-8/0

068-50-6/0

Refer to Aeroflex / Weinschel Drawing 193-7302-8, Rev. D for parts location.

Aeroflex / Weinschel 35

Model 8311 Attenuator Unit

8311-137-6-F, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7303-2, Rev. D)

Find

No.

Part Number

193-8051-1

193-8121

101-2070-1

074-912

193-8096

193-8049

068-32-13/0

193-11347

063-408

NAS662C2R5

NAS1635-04LR4

090-445

090-354

074-889-4

193-8086-3

193-8086-4

193-8086-5

193-8086-6

193-8086-7

193-8086-8

089-3599

193-8120

IM-303

Description

ASSY, ATTEN UNIT, BASE MODEL

8311(+5V)

MOUNTING PLATE

ASSY, ATTEN, PROG, 6 CELL,

63dB/1dB, 3 GHz, SMA F/F

KIT, RACK MOUNTING

W/O HANDLES 3.5 H

OVERLAY, FRONT PANEL

COAXIAL CABLE ASSY, SMA M/

TYPE N FEMALE, CONFORMABLE,

DC-11GHz

OVERLAY, PANEL

BLANK

COAXIAL CABLE ASSY, SMA M/

TYPE N FEMALE, CONFORMABLE,

DC-11GHz

SPACER, CONN, 12 POS

N -TYPE, CONNECTOR

SCR FLAT HD 2-56 X 5/16 LG 100

SCR PAN HD SELFLOCK, 4-40 X 1/4

* LABEL, REFERENCE

INSTRUCTION MANUAL

* LABEL WARNING, HIGH VOLTAGE

LABEL, THERMAL TRANSFER,

PERM MTLZ POLTEST,1.50 X .75IN

ASSY, CABLE, DIST BD TO ATTEN

ICD, MULTI-CHANNEL UNIT,

MODEL 8311-137-X-X

WIRING DIAGRAM, MODEL 8311(+5V)

O & S, ATTEN UNIT, MODEL 8311

Quantity

Used

Reference

Designator

CAGE

Code

IM-303A

Vendor

Part Number

W23

W24

W25

W20

W21

W22

AT1 - AT6

W9, W11,

W13, W15,

W17, W19

W8, W10,

W12, W14,

W16, W18

24803

93459

BRADY

K2RMX-001A

068-50-6/0

THT-6-428-10

Refer to Aeroflex / Weinschel Drawing 193-7303-2, Rev. D for parts location.

Aeroflex / Weinschel 36

Model 8311 Attenuator Unit

8311-137-6-R, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7303-12, Rev. C)

Find

No.

Part Number

193-8051-1

193-8121

101-2070-1

074-912

193-8096-1

068-32-6/0

193-8049

068-32-13/0

193-11347

063-408

NAS662C2R5

NAS1635-04LR4

090-445

090-354

074-889-4

193-8086-3

193-8086-4

193-8086-5

193-8086-6

193-8086-7

193-8086-8

089-3724

193-8120

IM-303

Description

ASSY, ATTEN UNIT, BASE MODEL 8311(+5V)

MOUNTING PLATE

ASSY, ATTEN, PROG, 6 CELL, 63dB/1dB,

3 GHz, SMA F/F

KIT, RACK MOUNTING W/O HANDLES 3.5 H

OVERLAY, REAR PANEL

COAXIAL CABLE ASSY, SMA M/TYPE N

FEMALE, CONFORMABLE, DC-11 GHz

OVERLAY, PANEL BLANK

COAXIAL CABLE ASSY, SMA M/TYPE N

FEMALE, CONFORMABLE, DC-11 GHz

SPACER, CONN, 12 POS

N -TYPE, CONNECTOR

SCR FLAT HD 2-56 X 5/16 LG 100

SCR PAN HD SELFLOCK, 4-40 X 1/4

* LABEL, REFERENCE INSTRUCTION

MANUAL

* LABEL WARNING, HIGH VOLTAGE

LABEL, THERMAL TRANSFER, PERM MTLZ

POLTEST,1.50 X .75IN

ASSY, CABLE, DIST BD TO ATTEN

ICD, MULTI-CHANNEL ATTEN UNIT

WIRING DIAGRAM, MODEL 8311(+5V)

O & S, ATTEN UNIT, MODEL 8311

Quantity

Used

Reference

Designator

CAGE

Code

IM-303A

Vendor

Part Number

AT1 - AT6

W23

W24

W25

W20

W21

W22

W8, W10,

W12, W14,

W16, W18

W9, W11,

W13, W15,

W17, W19

24803

93459

NA BRADY

K2RMX-001A

068-50-6/0

THT-6-428-10

Refer to Aeroflex / Weinschel Drawing 193-7303-12, Rev. C for parts location.

Aeroflex / Weinschel 37

Model 8311 Attenuator Unit

8311-202-2-F, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7305-2, Rev. D):

Find

No.

Part Number Description Quantity

Used

Reference

Designator

CAGE

Code

193-8051

193-8054

193-8049

193-8042

150T-11

150T-110

1568

068-32-4/0

068-32-6/0

068-32-12/0

193-9646

193-8101

074-912

074-761-1

074-921

NAS1635-04LR4

MS24693-C3

090-354

090-445

090-301

IM-303

193-8102

089-3574

ASSY, BASE UNIT, MODEL 8311

OVERLAY, FRONT PANEL SMA

OVERLAY, PANEL BLANK

MOUNTING PLATE

ATTEN PRGM, SMARTSTEP

ADAPT WPM 3 BULKHD

COAXIAL CABLE ASSY,

SMA M/M, CONFORMABLE

DC TO 18 GHz

COAXIAL CABLE ASSY,

SMA M/M, CONFORMABLE

DC TO 18 GHz

COAXIAL CABLE ASSY

SMA M/M, CONFORMABLE

DC - 18 GHz

CONNECTOR ADAPTER, PLATE

ASSY CONTROLLER TO ATTEN

KIT, RACK MOUNTING

W/O HANDLES 3.5 H

HOLE PLUG 3/8 HOLE, NYLON BLK

FEET NON-SKID

SCR PAN HD SELFLOCK, 4-40 X 1/4

SCR FLAT HD 4-40 X 5/16 LG 100

* LABEL WARNING, HIGH VOLTAGE

* LABEL, REFERENCE INSTRUCTION

MANUAL

* LABEL STD, 1.5 X .75 IN

O & S, ATTEN UNIT, MODEL 8311

WIRING DIAGRAM, MODEL 8311

ICD ATTEN UNIT, MODEL 8311

AT2, AT4

AT1, AT3

W9, W12

W8, W10

W11, W13

24803

83330

4963

Vendor

Part Number

068-32-4/0

068-32-6/0

IM-303A

B068-32-12/0

K2RMX-001A

3091

SJ-5008 BLACK

Refer to Aeroflex / Weinschel Drawing 193-7305-2, Rev. D for parts location.

Aeroflex / Weinschel 38

Model 8311 Attenuator Unit

8311-202-3-F, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7305-3, Rev. D):

Find

No.

Part Number Description Quantity

Used

Reference

Designator

CAGE

Code

193-8051

193-8054

193-8049

193-8042

150T-11

150T-110

1568

068-32-4/0

068-32-6/0

068-32-12/0

193-9646

193-8101

074-912

074-761-1

074-921

NAS1635-04LR4

MS24693-C3

090-354

090-445

090-301

IM-303

193-8102

089-3574

ASSY, BASE UNIT, MODEL 8311

OVERLAY, FRONT PANEL SMA

OVERLAY, PANEL BLANK

MOUNTING PLATE

ATTEN PRGM, SMARTSTEP

ADAPT WPM 3 BULKHD

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE DC TO 18 GHz

CONNECTOR ADAPTER PLATE

ASSY CONTROLLER TO ATTEN

KIT, RACK MOUNTING

W/O HANDLES 3.5 H

HOLE PLUG 3/8 HOLE NYLON BLACK

FEET NON-SKID

SCR PAN HD SELFLOCK, 4-40 X 1/4

SCR FLAT HD 4-40 X 5/16 LG 100

* LABEL WARNING, HIGH VOLTAGE

* LABEL, REFERENCE

INSTRUCTION MANUAL

* LABEL STD 1.5 X .75 IN

O & S, ATTEN UNIT, MODEL 8311

WIRING DIAGRAM, MODEL 8311

ICD, ATTEN UNIT, MODEL 8311

150 ATTENS

AT2, AT4,

AT6

AT1, AT3,

AT5

W9, W12,

W15

W8, W10

W11, W13,

W14, W16

NA 24803

83330

4963

IM-303A

Vendor

Part Number

068-32-4/0

068-32-6/0

B068-32-12/0

K2RMX-001A

3091

SJ-5008 BLACK

Refer to Aeroflex / Weinschel Drawing 193-7305-3, Rev. D for parts location.

Aeroflex / Weinschel 39

Model 8311 Attenuator Unit

8311-204-6-F, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7304-2, Rev. A):

Find

No.

Part Number Description Quantity

Used

Reference

Designator

CAGE

Code

193-8051

193-8054

193-8049

193-8042

150T-62

193-8118

1568

068-32-6/0

068-32-8/0

068-32-10/0

068-32-12/0

068-32-13/0

193-9646

193-8119

074-912

090-301

074-921

NAS1635-04LR4

MS24693-C3

090-445

090-354

IM-303

193-8114

089-3574

ASSY, BASE UNIT, MODEL 8311

OVERLAY, FRONT PANEL SMA

OVERLAY, PANEL BLANK

MOUNTING PLATE

ATTEN PRGM,

MOUNTING PLATE

ADAPT WPM 3 BULKHD

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

CONNECTOR ADAPTER PLATE

ASSY, CABLE, CONTROLLER TO

ATTEN

KIT, RACK MOUNTING

W/O HANDLES 3.5 H

* LABEL STD, 1.5 X .75 IN

FEET NON-SKID

SCR PAN HD SELFLOCK, 4-40 X 1/4

SCR FLAT HD 4-40 X 5/16 LG 100

* LABEL, REFERENCE

INSTRUCTION MANUAL

* LABEL WARNING, HIGH VOLTAGE

O & S, ATTEN UNIT, MODEL 8311

WIRING DIAGRAM, MODEL 8311

ICD ATTEN UNIT, MODEL 8311,

150 ATTENS

AT1 - AT6

W9, W11

W15, W17,

W19

W8, W10,

W13

W14, W16

W12, W18

24803

4963

IM-303A

Vendor

Part Number

068-32-6/0

B068-32-8/0

B068-32-10/0

B068-32-12/0

B068-32-13/0

K2RMX-001A

SJ-5008 BLACK

Refer to Aeroflex / Weinschel Drawing 193-7304-2, Rev. A for parts location.

Aeroflex / Weinschel 40

Model 8311 Attenuator Unit

8311-352-3-R, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7306-13, Rev. A):

Find

No.

Part Number Description Quantity Reference

Used Designator

CAGE

Code

193‐8051

193‐10265

193‐9664

193‐8054‐1

193‐8049

193‐8053‐001

193‐10066

193‐8085

193‐10342

068‐32‐5/0

074‐912

090‐301

3408T‐103

1568

074‐761‐1

068‐32‐4/0

068‐32‐12/0

NAS1635‐04LR4

NAS662C2LPR3

NAS1635‐04LR5

MS15795‐803

193‐8129

089‐3868

IM303

ASSY, BASE UNIT, MODEL 8311 (+15V), 2U

MOUNTING PLATE

ASSY, CABLE, PSU TO

DISTRIBUTION, 15V

OVERLAY REAR PANEL SMA

OVERLAY, PANEL BLANK

ASSY, PCB, DISTRIBUTION, 14 PIN

SPACER, CONNECTOR, 12 POS

ASSY, CABLE, CONTROLLER TO

DISTRIBUTION

ASSY CABLE ATTEN TO DIST

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

KIT, RACK MOUNTING W/O HANDLES 3.5 H

* LABEL STD 1.5 X .75 IN

ATTEN PRGM

ADAPT WPM 3 BULKHD

HOLE PLUG 3/8 HOLE NYLON BLACK

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

SCR PAN HD SELFLOCK 4‐40 X 1/4

SCR, FLT HD, #2‐56 X 3/16 LG, SELF‐LOCK

SCR PAN HD SELF LOCK 4‐40X5/16

WASHER FLAT .125 ID .250 OD

WIRING DIAGRAM

ICD ATTEN UNIT MODEL 8311‐352‐X‐T

O & S, ATTEN UNIT, MODEL 8311

W11

W17 93459

24803 NA

AT1 ‐ AT3

W13, W15

83330

93459

W14, W16, 93459

W18

IM-303A

Vendor

Part Number

B068‐32‐5/0

K2RMX‐001A

3091

B068‐32‐4/0

B068‐32‐12/0

Refer to Aeroflex / Weinschel Drawing 193-7306-13, Rev. A for parts location.

Aeroflex / Weinschel 41

Model 8311 Attenuator Unit

8311-352-4-R, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7306-14, Rev. B):

Find

No.

Part Number Description Quantity Reference

Used Designator

193‐8051

193‐10265

193‐9664

193‐8054‐1

193‐8049

193‐8053‐001

193‐10066

193‐8085

193‐10342

068‐32‐5/0

074‐912

090‐301

3408T‐103

1568

074‐761‐1

068‐32‐4/0

068‐32‐12/0

NAS1635‐04LR4

NAS662C2LPR3

NAS1635‐04LR5

MS15795‐803

079R‐198‐1

193‐8129

089‐3868

IM303

ASSY, BASE UNIT, MODEL 8311 (+15V), 2U

MOUNTING PLATE

ASSY, CABLE, PSU TO DISTRIBUTION, 15V

OVERLAY REAR PANEL, SMA

OVERLAY, PANEL BLANK

ASSY, PCB, DISTRIBUTION, 14 PIN

SPACER, CONNECTOR, 12 POS

ASSY, CABLE, CONTROLLER TO

DISTRIBUTION

ASSY CABLE ATTEN TO DIST

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

KIT, RACK MOUNTING W/O HANDLES 3.5 H

* LABEL STD, 1.5 X .75 IN

ATTEN PRGM, SMARTSTEP

ADAPT WPM 3 BULKHD

HOLE PLUG 3/8 HOLE NYLON BLACK

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

SCR PAN HD SELFLOCK 4‐40 X 1/4

SCR, FLT HD, #2‐56 X 3/16 LG, SELF‐LOCK

SCR PAN HD SELF LOCK 4‐40X5/16

WASHER FLAT .125 ID, .250 OD

SPIRAL WRAP, 3/16 OD NATURAL

WIRING DIAGRAM

ICD ATTEN UNIT, MODEL 8311‐352‐X‐T

O & S, ATTEN UNIT, MODEL 8311

W11

W17, W19

AT1 ‐ AT4

W13,W15

W14, W16,

W18, W20

CAGE

Code

83330 3091

B068‐32‐4/0

93459 B068‐32‐12/0

6383

IM-303A

Vendor

Part Number

93459 B068‐32‐5/0

24803 K2RMX‐001A

T25F‐C

Refer to Aeroflex / Weinschel Drawing 193-7306-14, Rev. B for parts location.

Aeroflex / Weinschel 42

Model 8311 Attenuator Unit

8311-352-6-F, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7306-2, Rev. B):

Find

No.

Part Number

193-8051

193-10265

193-9664

193-8054

193-8049

193-8053-001

193-10066

193-8085

193-10342

193-10343

074-912

090-301

3408T-103

1568

068-32-4/0

068-32-12/0

NAS1635-04LR4

NAS662C2LPR3

NAS1635-04LR5

MS15795-803

193-8129

089-3868

IM-303

Description

ASSY, BASE UNIT,

MODEL 8311 (+15V) 2U

MOUNTING PLATE

ASSY, CABLE, DC POWER

OVERLAY, FRONT PANEL, SMA

OVERLAY, PANEL BLANK

ASSY, PCB, DISTRIBUTION, 14 PIN

SPACER, CONNECTOR, 12 POS

ASSY, CABLE, CONTROLLER TO DISTRIBUTION

ASSY CABLE, ATTEN TO DIST

ASSY CABLE ATTEN TO DIST

KIT, RACK MOUNTING W/O HANDLES 3.5 H

* LABEL STD 1.5 X .75 IN

ATTEN PRGM SMARTSTEP

ADAPT WPM 3 BULKHD

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

SCR PAN HD SELFLOCK, 4-40 X 1/4

SCR, FLT HD, #2-56 X 3/16 LG, SELF-LOCK

SCR PAN HD SELF LOCK 4-40X5/16

WASHER FLAT .125 ID, .250 OD

WIRING DIAGRAM, MODEL 8311

ICD ATTEN UNIT, MODEL 8311-352-9-T

O & S, ATTEN UNIT, MODEL 8311

Quantity Reference

Used Designator

CAGE

Code

IM-303A

Vendor

Part Number

W11

W12

AT1 - AT6

W13, W15,

W17, W19

W21, W23

W14, W16,

W18, W20,

W22, W24

24803 K2RMX-001A

B068-32-4/0

B068-32-12/0

Refer to Aeroflex / Weinschel Drawing 193-7306-2, Rev. B for parts location.

Aeroflex / Weinschel 43

Model 8311 Attenuator Unit

8311-352-9-T, Attenuator Unit Assembly Replaceable Parts List (P/N 193-7306-9, Rev. C):

Find

No.

Part Number Description Quantity

Used

Reference

Designator

CAGE

Code

193-8051

193-10265

193-10265-1

193-8046

193-8046-1

193-8053-001

193-10066

193-8085

193-9664

193-9300-2

193-10342

193-10343

074-761-1

074-912

090-301

3408T-103

1568

068-32-4/0

068-32-5/0

068-32-6/0

068-32-7/0

NAS1635-04LR4

NAS662C2LPR4

NAS1635-04LR5

MS15795-803

193-8129

089-3868

IM303

ASSY, BASE UNIT, MODEL 8311 (+15V) 2U

MOUNTING PLATE

OVERLAY, FRONT PANEL SMA

ASSY, PCB, DISTRIBUTION, 14 PIN

SPACER, CONNECTOR, 12 POS

ASSY, CABLE, CONTROLLER TO

DISTRIBUTION

ASSY CABLE, DC POWER

ASSY, CABLE, DIST TO ATTEN

ASSY, CABLE, ATTEN TO DIST

HOLE PLUG 3/8 HOLE, NYLON BLACK

KIT, RACK MOUNTING, W/O HANDLES 3.5 H

* LABEL STD, 1.5 X .75 IN

ATTEN PRGM, SMARTSTEP

ADAPT WPM 3 BULKHD

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

COAXIAL CABLE ASSY, SMA M/M,

CONFORMABLE, DC TO 18 GHz

SCR PAN HD SELFLOCK, 4-40 X 1/4

SCR, FLT HD, #4-40 X 1/4 LG, SELF-LOCK

SCR PAN HD SELF, LOCK 4-40X5/16

WASHER FLAT .125 ID, .250 OD

WIRING DIAGRAM

ICD ATTEN UNIT, MODEL 8311-352-9-T

O & S, ATTEN UNIT, MODEL 8311

W10

W11

W12

AT1 - AT9

W13 - W16,

W21 - W25

W30

W17, W26

83330

24803

W18,W27

W19, W20,

W28, W29

IM-303A

Vendor

Part Number

3091

K2RMX-001A

B068-32-4/0

B068-32-5/0

B068-32-6/0

Refer to Aeroflex / Weinschel Drawing 193-7306-9, Rev. C for parts location.

Aeroflex / Weinschel 44

Model 8311 Attenuator Unit

Basic Model 8311 Assembly Replaceable Parts List (P/N 193-8051, Rev. A):

Find

No.

Part Number Description Quantity

Used

Reference

Designator

193-8050

193-8048

193-9176

193-9177

193-8023-001

193-9126-000

193-8005-1

193-9236

193-8029-001

193-8028-000

001-400-15

051-40

193-9193

062-184-5

068-39-2

068-21

062-380-1

090-285

193-9159

052-1-1/5

MS51957-19

090-353

090-467

MS51957-17

MS15795-803

MS35338-135

MS51957-14

MS24693-C3

MS35649-244

MS51957-15

MS51859-2

ENCLOSURE, MODIFIED

CHASSIS

ASSY CABLE PSU TO CONT

ASSY CABLE PWR/INPUT TO PSU

ASSY, PCB,CONTROLLER,

W/IEEE CONN

ASSY, PCB, ADDRESS SWITCH

ASSY, CABLE RS232 CONT TO R/P

OVERLAY

ASSY, PCB, FRONT PANEL DISPLAY

ASSY, PCB, CONTROL, FRONT PNL

PSU, SWITCHER +15V DC, 3.3A

FUSE HOLDER, POWER INPUT,

W/SWITCH

ASSY, CABLE, CONTROLLER TO

FRONT PANEL DISPLAY

CONN SCREW LOCK FEMALE

CABLE ASSY, 16 COND RIBBON,

6 INCH LG

CORD PWR 3-CONDUCTOR

DTCH 7.5FT 10A-125V

NEMA5-15P/IEC320-C13

SCREW LOCK, HARDWARE KIT

METRIC, #6-32 UNC-2A EXT THDS

*NAMEPLATE HIGH VOLTAGE

ASSY, CABLE, GND

FUSE 1.5 AMP, 250V

SCR PAN HD 4-40 X 3/4 LG

* LABEL GROUND

*LABEL, POWER INPUT

SCR PAN HD 4-40 X 1/2 LG

WASHER FLAT .125 ID .250 OD

WASHER LOCK #4

SCR PAN HD 4-40 X 5/16 LG

SCR FLAT HD 4-40 X 5/16 LG 100

NUT HEX #4

SCR PAN HD 4-40 X 3/8 LG

WASHER FLAT #4 NYLON

XF1

CAGE

Code

60975

5245

71468

D-KEY

16428

779

75915

IM-303A

Vendor

Part Number

GLC50-15

PSOSXSS6B

D20418-2

A8PPG-1606M-ND

17250

554808-1

312.01.5

Refer to Aeroflex / Weinschel Drawing 193-8051, Rev. A for parts location.

Aeroflex / Weinschel 45

Model 8311 Attenuator Unit

Basic Model 8311 (+5V) Assembly Replaceable Parts List (P/N 193-8051-1, Rev. A):

Find

No.

Part Number Description Quantity

Used

Reference

Designator

193-8050

193-8048

193-8088

193-9177

193-8023-004

193-8053-000

193-9126-000

193-8005-1

193-8085

193-9236

193-8029-001

193-8028-000

001-400-5

051-40

193-9193

062-184-5

068-39-2

068-21

062-380-1

090-285

193-9159

052-1-1/5

MS51957-19

090-353

090-467

MS51957-17

MS15795-803

MS35338-135

MS51957-14

MS24693-C3

MS35649-244

MS51957-15

MS51859-2

ENCLOSURE, MODIFIED

CHASSIS

ASSY, CABLE, DC PWR

ASSY CABLE PWR/INPUT TO PSU

ASSY, PCB,CONTROLLER,

+5V, W/IEEE CONN

ASSY PCB, DISTRIBUTION MODULE

ASSY, PCB, ADDRESS SWITCH

ASSY CABLE RS232 CONT TO R/P

ASSY, CABLE, CONTROLLER TO

DISTRIBUTION

OVERLAY

ASSY, PCB, FRONT PANEL DISPLAY

ASSY, PCB, CONTROL, FRONT

PANEL

PSU SWITCHER, +5V DC, 8A

FUSE HOLDER, POWER, INPUT

W/SWITCH

ASSY, CABLE, CONTROLLER TO

FRONT PANEL DISPLAY

CONN SCREW LOCK, FEMALE

CABLE ASSY, 16 COND RIBBON,

6 INCH LG

CORD PWR 3-CONDUCTOR

DTCH 7.5FT 10A-125V

NEMA5-15P/IEC320-C13

SCREW LOCK, HARDWARE

KIT, METRIC, #6-32

UNC-2A EXT THDS

*NAMEPLATE HIGH VOLTAGE

ASSY, CABLE, GND

FUSE 1.5 AMP, 250V

SCR PAN HD 4-40 X 3/4 LG

* LABEL GROUND

*LABEL, POWER INPUT

SCR PAN HD 4-40 X 1/2 LG

WASHER FLAT .125 ID .250 OD

WASHER LOCK #4

SCR PAN HD 4-40 X 5/16 LG

SCR FLAT HD 4-40 X 5/16 LG 100

NUT HEX #4

SCR PAN HD 4-40 X 3/8 LG

WASHER FLAT #4 NYLON

XF1

CAGE

Code

6975

5245

71468

D-KEY

16428

779

75915

IM-303A

Vendor

Part Number

GLC50-5

PSOSXSS6B

D20418-2

A8PPG-1606M-ND

17250

554808-1

312.01.5

Refer to Aeroflex / Weinschel Drawing 193-8051-1, Rev. A for parts location.

Aeroflex / Weinschel 46

Model 8311 Attenuator Unit

9. APPLICATIONS:

IM-303A

Applications for the 8311 Series range from providing control of a single SmartStep Attenuator in a bench test/lab environment using a PC and a terminal emulator, to complex system applications where the 8311 Series is employed to control many devices to create custom/semi-custom subsystems to reduce overall design cost.

Weinschel can provide a variety of custom designed driver interfaces for various devices, such as RF switches, relays, pin attenuators, motorized step attenuators, displays, and other devices, as well as complete subsystem design and integration services. Contact us with your specialized needs.

10. ACCESSORIES:

Part Number

193-8033-1

7005-X

Description

Rack Mounting Kit, Single 8311

P LANAR C ROWNS ® ...

refer to data sheet in Appendix C for model numbers and applicable crown specifications.

11. CONTACTING AEROFLEX / WEINSCHEL:

In the event of a malfunction, contact Aeroflex / Weinschel, Inc. An apparent malfunction of an instrument or component may be diagnosed over the phone by first contacting the Customer Service Department at Aeroflex /

Weinschel, Inc. DO NOT send the instrument or component back to the factory without prior authorization. When it is necessary to return an item, state the symptoms, catalog and type number of the instrument or component, and date of original purchase. Also write the Company name and your name and phone number on a card and tape the card to the item returned. Page provides further information regarding preparation of a unit for reshipment. Contact

Weinschel, Inc. Customer Service Department as follows:

Via mail: Aeroflex / Weinschel, Inc.

5305 Spectrum Drive

Frederick, MD 21703-7362

U.S.A.

Via Telefax: 301-846-9116

Via Phone: Call TOLL FREE 800-638-2048

Toll call # 301-846-9222

Via Website: www.aeroflex-weinschel.com

Via e-mail: [email protected]

Aeroflex / Weinschel 47

Model 8311 Attenuator Unit IM-303A

12. AEROFLEX / WEINSCHEL WARRANTY:

PRODUCTS - Aeroflex / Weinschel, Inc. warrants each product it manufactures to be free from defects in material and workmanship under normal use and service anywhere in the world. Aeroflex / Weinschel, Inc.’s only obligation under this Warranty is to repair or replace, at its plant, any product or part thereof that is returned with transportation charges prepaid to Aeroflex / Weinschel, Inc. by the original purchaser within ONE YEAR from the date of shipment.

The foregoing Warranty does not apply Aeroflex / Weinschel, Inc.’s sole opinion to products that have been subject to improper or inadequate maintenance, unauthorized modifications, misuse, or operation outside the environmental specifications for the product.

SOFTWARE PRODUCTS- Aeroflex / Weinschel, Inc. software products are supplied without representation or

Warranty of any kind. Aeroflex / Weinschel, Inc., therefore, assumes no responsibility and will not accept liability

(consequential or otherwise) arising from the use of program materials, disk, or tape.

The Warranty period is controlled by the Warranty document furnished with each product and begins on the date of shipment. All Warranty returns must be authorized by Aeroflex / Weinschel, Inc. prior to their return.

Aeroflex / Weinschel, Inc.’s Quality System Certified to:

Certificate No. 289j

Aeroflex / Weinschel 48

APPENDIX A

CARE AND HANDLING OF MICROWAVE COAXIAL

CABLE ASSEMBLIES

A-1 CARE AND HANDLING OF ASSEMBLIES.

To en su re accur ate measu remen ts an d op timal performance of Weinschel products, the microwave coaxial cable assemblies used in system and test setups must be properly used and maintained. Proper connections, routine inspection of all cables, and cleaning of the connectors are extremely important procedures which can prolong the longevity and accuracy of equipment.

A-2 CABLE INSPECTION.

Routinely check external cables for signs of cracked insulation, dents, twists, flattening, signs of jacket abrasion, or other signs of abuse. Wrinkles in the jacket indicate that the minimum bend radius has been exceeded. Most often, this occurs near the marker tubes and connectors.

Also inspect the connector interfaces for the following:

•

Bent pins (male).

•

Bent or missing tines (female).

•

Worn or chipped plating.

•

Damaged or displaced dielectric inserts.

•

Thread damage.

•

Folded or mushroomed outer interface rims.

•

Mushroomed pin shoulders (male) or tine ends

(female).

•

Score lines on pins and outer interface rims visible to the unaided eye.

•

Recessed or protruding pins.

It is advisable to clean the connectors prior to inspection to make subtle damage more apparent. If any of the above is noted, replace the assembly before its further use results in equipment damage. Also inspect the mating connectors for similar damage.

Inspect the connector interface for signs of debris. Debris may be in the form of:

•

Plating chips or other metal particles.

•

Dust or dirt.

•

Oily films.

•

Other miscellaneous foreign particles.

If signs of debris are present, clean the connector interface as directed in Paragraph A-6.

A-3 MAKING INITIAL CONNECTIONS.

Exercise caution when mating cables. Poor connections lead to poor system performance. They can also damage not only the cable assembly, but more significantly, front or rear panel connectors on the equipment itself which may be more difficult to repair.

A-3.1

ALIGNING CONNECTORS.

Align the center lines of two connectors before actual mating. Male retaining nuts contain a small amount of necessary play which may make it possible to mate the threads without the pins being properly aligned. Pin misalignment can damage pins and dielectric inserts.

A-3.2

MATING CONNECTORS.

Gen t ly mate th e connectors by hand, taking care not to force the coupling nut at the slightest resistance. It is often possible to feel whether or not the pins are mated. If the coupling nut is difficult to turn, either the pins are not mated, the coupling nut is cross-threaded, or one of the connectors has been damaged by excess torque.

Never hold a male connector coupling nut stationary while screwing a female connector into it. This rotation can erode the plating and damage both the outer interface rim as well as the pin. If the pins become locked, serious damage can result to both the equipment and the cable assembly.

A-4 ENSURING PROPER CONNECTOR TORQUE.

A-4.1

OVERTORQUING.

Once connectors have been properly mated, apply only the proper amount of torque.

Overtorquing damages both connectors involved. Also, a connector which has been damaged by overtorquing, in turn, damages every connector to which it is subsequently mated.

It usually leads to poor system performance as well.

Overtorque can cause:

•

Bent pins.

•

Recessed or protruding pins.

•

Recessed or protruding dielectrics.

•

Chipped plating.

•

Damaged coupling threads.

•

Coupling nut retaining ring damage.

•

Mushroomed outer interface shells.

•

Mushroomed pin shoulders.

A-i

CARE & HANDLING OF COAXIAL CABLES

A-4.2

HEX-NUT TYPES.

also causes overtorque.

A-4.3

KNURLED NUTS.

T ig h ten co nn ector s with knurled nuts by hand. If this does not provide sufficient tightness use a hex-nut connector and torque wrench instead.

Never use pliers to tighten a connector. Table A-1 recommends torque specifications for the various types of connectors.

To mate a connector of the hex-nut type, always use a torque wrench set to the correct torque value. Tighten the connector slowly until the wrench snaps. Tightening too quickly can cause the wrench to exceed its set limit. Do not snap the wrench more than once as this

Table A-1. Recommended Torque Values

Connector

GPC-7 (7mm) w/hex nut

Type N w/hex nut

SMA, 2.92mm, 3.5mm

2.4mm, WPM, WPM-3

WPM-4

Type N & TNC (knurled)

BNC (knurled)

Recommended

Torque

14 in/lbs

1 in/lbs

14 in/lbs

1 in/lbs

7.5 in/lbs

0.5 in/lbs

Hand-tight

A-5 PROPER CABLE HANDLING.

Never exceed the minimum bend radius specified for a cable. Guard against tight bends at the end of connector strain relief tubing, or at the ends of marker tubing where they may be less noticeable. Although cable bend may seem slight, the actual radius of the bend at the point of angular departure may be far smaller than the acceptable radius.

Never pinch, crush or drop objects on cable assemblies.

Also, do not drag a cable over sharp edges as this will pinch it and cause it to exceed the minimum bend radius.

Never use a cable assembly to pull a piece of equipment.

Cables and connectors are not designed to support or move equipment.

A-5.1

SECURING CABLES.

Use toothed, rubber-lined

"P-clamps" to hold cables in place. If it is necessary to use tie-wraps, use the widest possible wrap and the lowest setting on the gun to ensure the minimum pressure on the cable.

A-5.2

STORING CABLES.

W he n st or ing cab les, minimize cable "set" by coiling them in large diameters (1 or

2 feet). Unroll the cable properly when it is ready to be used; do not pull the loops out hastily. Similarly, re-roll them when storing them away again.

A-6 CLEANING CONNECTOR INTERFACES.

Use the following guidelines in cleaning connector interfaces: a. Do not use chlorinated solvents including common tap water. These solvents are extremely penetrating and sometimes ruin otherwise good devices and assemblies.

b. Moisten a cotton swab with isopropyl alcohol. Roll the swab on a paper towel to remove excess. c. Use the moistened cotton swab to wipe away debris.

Do not try to dissolve the debris by overwetting the swab.

d. Repeat the cleaning process using additional swabs as necessary. If metallic particles are embedded in the dielectric, use an eyeglass and a sharp pick in an attempt to dislodge them. Swab again. e. When satisfied that the interfaces are clean, blow them dry with dry compressed air, or preferably dry nitrogen

(pressurized spray cans work well). Do not use breath. f. Clean the mating connectors. These may be the source of the debris.

A-ii

APPENDIX B - 488.2 Required Documentation

Appendix C

Internal Device Data Sheets

Click on link below to get internal device data sheet...

•

150 Series Programmable Attenuators...dc-18/26.5 GHz

•

3200 Series Programmable Attenuators...dc-2/3 GHz

•

3250 Series 75

Ω

Series Programmable Attenuators...dc-1.5 GHz

•

4216 & 4218 Series Solid-State Attenuators

IM-303

Model 8311 (IM-303) Revision Record

REVISION DATE

- - -

DESCRIPTION

12/99 Preliminary Issue

APPLICABLE

SERIAL

NUMBERS

All Units

1/03 Initial Issue

2/04 Incorporate company name change from

MCE/Weinschel to Aeroflex / Weinschel,

Aeroflex / Weinschel ECNs 04-026 & 04-032.

Added Model 8311-137-6-R.

12/05 Added Model 8311-352-9-T.

All Units

All built after 2-04.

8311-352-9-T

8311-204-6-R 3/06

7/06

2-10

7-10

Added Model 8311-204-6-R.

Added Model 8311-352-6-F. 8311-352-6-F

2/08

7/08

On page # 9 is the specification table, it is stated 3.25 dB max. for the 8311-202-XF updated to 5.25 per ICD 089-3574.

Added Model 8311-352-3-R and incorporated

Aeroflex / Weinschel ECNs 07-293, 08-087.

8311-202-2F &

8311-202-3F

8311-352-3-R

8311-352-6-F

10/08 Incorporated Aeroflex / Weinschel ECN 08-088 8311-352-9-T

6/09 Added Model 8311-1-6-R, Aeroflex / Weinschel

ECNs 09-160 & ERN 09-113

8311-1-6-R

Added Model 8311-352-4-R, Aeroflex /

Weinschel ERN 10-024

8311-352-4-R

Incorporated Aeroflex / Weinschel ECN 10-101 8311-352-4-R

9-27-10 Incorporated Aeroflex / Weinschel ECN 10-251 Units with Type N connectors.

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Key Features

Programmable attenuation
Front panel control
Computer control
Up to 12 channels
GPIB (IEEE-488) interface
RS-232/RS-422/RS485 interface
Multi-channel configurations
Various attenuator models supported
Flexible, easy to use
Bench test and subsystem applications

Frequently Answers and Questions

What are the power requirements for the 8311 Attenuator Unit?

The 8311 Attenuator Unit requires ac 100 to 240 Vac, 50/60 Hz, 50 Watts.

What are the environmental operating conditions for the 8311 Attenuator Unit?

The 8311 Attenuator Unit operates best within its specifications when operated within a controlled environment having an ambient temperature of 0°± 50°C, Relative Humidity of up to 95% non condensing, and a altitude of less than 40,000 feet.

What communication interfaces are available on the 8311 Attenuator Unit?

The 8311 Attenuator Unit offers several communication interfaces: IEEE-488 Bus (GPIB), RS-232, RS-422, and RS-485.

What types of connectors are available on the 8311 Attenuator Unit?

The Model 8311 can be configured with various connectors, such as BNC, N, and SMA, depending on the specific model and customer requirements.

How many channels of attenuation can the 8311 Attenuator Unit support?

The 8311 Attenuator Unit can support up to 12 channels of attenuation, depending on the specific model.

Operation & Service Manual

Model 8311

SmartStep

Programmable Attenuator Units

© Aeroflex / Weinschel, Inc.

Frederick, Maryland

2003 - 2010

SAFETY SUMMARY

WARNING

CAUTION

NOTE

WARNING

CAUTION

NOTE

CAUTION

HIGH VOLTAGE

WARNING

HIGH

VOLTAGE

TABLE OF CONTENTS

1. GENERAL INFORMATION:

2. SPECIFICATIONS:

3. INSTALLATION:

NOTE

4. FRONT PANEL CONTROLS & INDICATORS:

5. REMOTE OPERATION:

6. GENERAL CIRCUIT DESCRIPTION:

7. MAINTENANCE:

8. REPLACEABLE PARTS LIST:

9. APPLICATIONS:

10. ACCESSORIES:

11. CONTACTING AEROFLEX / WEINSCHEL:

12. AEROFLEX / WEINSCHEL WARRANTY:

APPENDIX A

CARE AND HANDLING OF MICROWAVE COAXIAL

CABLE ASSEMBLIES

Appendix C

Internal Device Data Sheets

Model 8311 (IM-303) Revision Record

Key Features

Frequently Answers and Questions

What are the power requirements for the 8311 Attenuator Unit?

What are the environmental operating conditions for the 8311 Attenuator Unit?

What communication interfaces are available on the 8311 Attenuator Unit?

What types of connectors are available on the 8311 Attenuator Unit?

How many channels of attenuation can the 8311 Attenuator Unit support?

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