Keysight Technologies M9101A Maintenance Manual
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Keysight Technologies M9101A Maintenance Manual

Pxi matrix and multiplexer switch modules
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M9101A, M9102A, M9103A,
M9120A, M9121A, M9122A
Keysight PXI Matrix and
Multiplexer Switch Modules
Maintenance Guide

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Summary of Contents for Keysight Technologies M9101A

  • Page 1 Maintenance Guide M9101A, M9102A, M9103A, M9120A, M9121A, M9122A Keysight PXI Matrix and Multiplexer Switch Modules...
  • Page 3 WITHOUT NOTICE, IN FUTURE EDI- without prior agreement and written con- www.keysight.com/find/M9101A (prod- TIONS. FURTHER, TO THE MAXIMUM sent from Keysight Technologies, Inc. as uct-specific information and support, EXTENT PERMITTED BY APPLICABLE governed by United States and interna- software and documentation updates) LAW, KEYSIGHT DISCLAIMS ALL WAR- tional copyright laws.
  • Page 4 Safety Information Do Not Remove Instrument Cover The following general safety precau- tions must be observed during all Only qualified, service-trained person- phases of operation of this instrument. nel who are aware of the hazards Failure to comply with these precau- involved should remove instrument tions or with specific warnings or oper- covers.
  • Page 5 REMOTE OPERATION When any channel is connected to a hazardous voltage source, the instrument and the device under test should be supervised, following local EHS practices to restrict access. To prevent electrical shock, use only wires that are rated for the maximum voltage applied to any channel.
  • Page 6 Safety Symbols Waste Electrical and A CAUTION denotes a hazard. It Electronic calls attention to an operating pro- cedure or practice, that, if not cor- Equipment (WEEE) rectly performed or adhered to Directive could result in damage to the The instrument has been tested, product or loss of important data.

  • Page 7: Table Of Contents

    M9101A PC Board Layout ........
  • Page 8 M9102A Functional Verification Test Record - Closed Channel Resistance34 M9102A Schematic ..........36 M9102A PC Board Layout.

  • Page 9: General Information

    The Keysight PXI switch modules deliver high-performance switching with fast, easy installation and configuration. The following modules are covered in this Maintenance Guide: Multiplexer modules - M9101A Multiplexer: 64-channel, 2-Wire, Reed Relays - M9102A Multiplexer: 128-channel, 1-Wire, Reed Relays - M9103A Multiplexer: 99-channel, 2-Wire, Armature Relays Matrix modules...

  • Page 10: Safety Considerations

    General Information Safety Considerations Safety Considerations SHOCK HAZARD. Only service-trained personnel who are aware of the hazards invol ved should attempt to remove these mod ules from the chassis and repair them. Remove all user wiring and connections from the plug- in mod ules before troubleshooting or verification.

  • Page 11: Inspect For Damage

    – Name and address of owner. A Post Office box is not acceptable as a return address. – Product model number (for example, M9101A) – Product serial number (for example, MYXXXXXXXX). The serial number label is located on the side of the module.

  • Page 12: Operational Verification Of The Modules

    General Information Operational Verification of the Modules Operational Verification of the Modules There are no specific programmable operational verification or self test procedures for these modules. However, you can use the Soft Front Panel software to open/close individual channels. This will verify that the module is installed correctly and that the host controller can communicate with the module.
  • Page 13 SFP for the M9101A Multiplexer module; it shows channel 36 and the isolation relay closed.

  • Page 14: Identifying Channel Numbers

    General Information Operational Verification of the Modules Beginning with SFP Version 1.1.x, if you have another application, either your own program or another instance of the SFP interface, that has initialized the switch module, then the SFP enters it’s “monitor” mode. In this mode, you cannot change relay state and the menu buttons are grayed-out.
  • Page 15 Operational Verification of the Modules General Information The following graphics show the Soft Front Panel interface and illustrate the channel numbering scheme for multiplexer and matrix modules. For the multiplexer modules, the Instrument Specific Syntax for channel numbers are in the form: bnchn where bn is the bank number (generally ‘1’) and chn is the channel number.

  • Page 16: Functional Verification Test Procedures

    General Information Functional Verification Test Procedures Functional Verification Test Procedures The Functional Verification tests are used to test the module’s electrical performance using the typical characteristics supplied in the module’s data sheet. For the low frequency multiplexer and matrix modules, the Functional Verification tests consist of measuring each channel’s contact path resistance as described the individual chapters.

  • Page 17: Relay Path Resistance Measurements

    Functional Verification Test Procedures General Information Relay path resistance measurements Relay module path resistance (relay contact) measurements are appropriate for all relay modules. Measurements are made from the module’s front panel terminals, and do not include terminal block or connector resistance. Use 4-wire Ohms measurement techniques and measure directly at the module’s front panel terminals where possible.

  • Page 18: Path Resistances

    The following table lists the typical path resistances and the approaching Maximum Path Resistance resistance measurements for the low frequency PXI modules. Relay Mod ule Initial Path Resistance Path Resistance M9101A 800 m < 1.50  < 1.50  M9102A 400 m...

  • Page 19: End-Of-Life Detection

    Relay Life General Information Switch modules are considered “wear out” items and it is normal for relay performance to degrade over time. Life expectancy and performance depend on the specific application and use model. End-of-Life Detection A preventive maintenance routine can prevent problems caused by unexpected relay failure.

  • Page 20: Post-Repair Safety Checks

    General Information Relay Life Post-repair safety checks After making repairs to the modules, inspect them for any signs of abnormal internally generated heat such as discolored printed circuit boards or components, damaged insulation, or evidence of arcing. Determine and correct the cause of the condition.

  • Page 21: Replacement Relays

    Replacement Relays General Information Replacement Relays Keysight PXI Switch Module Keysight Part Number for Replacement Relay M9101A Mux. 64-ch, 2-wire Reed Relays 0490-2921 Relay-dry reed 2A 5vdc-coil 1A 100VAC 375  through-hole M9102A Mux. 128-ch, 1-wire Reed Relays 0490-2921 Relay-dry reed 2A 5VDC-coil 1A 100VAC 375 ...
  • Page 22 General Information Module Accessories Keysight PXI Matrix and Multiplexer Switch Modules Maintenance Guide...

  • Page 23: M9101A Multiplexer, 64 Channel, 2-Wire Reed Relays

    At power on or reset, all relays on the module are open. Replacement Relays One spare channel relay (RL68) is loaded on the M9101A PC board. Refer to Figure 5. To use this relay, you must desolder it from the PC board and solder it in place of a defective channel relay.
  • Page 24 M9101A Multiplexer, 64 channel, 2-wire Reed Relays Introduction Pin No. Channel Pin No. Channel Pin No. Channel Pin No. Channel Ch 4 H Ch 3 H Ch 2 H Ch 1 H Ch 4 L Ch 3 L Ch 2 L...

  • Page 25: Troubleshooting And Functional Verification Testing

    Troubleshooting and Functional Verification Testing M9101A Multiplexer, 64 channel, 2-wire Reed Relays Troubleshooting and Functional Verification Testing To troubleshoot and verify the relays on the module, perform a closed channel resistance test on each channel. This procedure does not provide performance or specification verification.

  • Page 26: M9101A Functional Verification Test Record - Closed Channel Resistance25

    M9101A Multiplexer, 64 channel, 2-wire Reed Relays Troubleshooting and Functional Verification Testing M9101A Functional Verification Test Record - Closed Channel Resistance Channel Path Channel Path Resistance Measured Value Resistance Measured Value < 1.50  < 1.50  < 1.50 ...

  • Page 27: M9101A Schematic

    M9101A Schematic Notes: - Numbers in parenthesis are front panel connector pin numbers. - RL67 is loaded on the PC board but is not used on the M9101A module. See note on page - Channel relay numbers (RL1 - RL64) correspond to the channel numbers.

  • Page 28: M9101A Pc Board Layout

    M9101A Multiplexer, 64 channel, 2-wire Reed Relays M9101A Schematic M9101A PC Board Layout Black box indicates Pin 1 Figure 5 M9101A PC Board Relay Layout Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 29 M9101A Multiplexer, 64 channel, 2-wire Reed Relays Figure 6 shows the back side (solder side of the M9101A) and also shows the relay contact connections (the center two terminals are for the relay coil drive). Note that relays RL65, RL66, and RL67 are reversed.
  • Page 30 M9101A Multiplexer, 64 channel, 2-wire Reed Relays M9101A Schematic Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...

  • Page 31: M9102A Multiplexer, 128 Channel, 1-Wire Reed Relays

    Refer to the schematic Figure 9 on page 36. There is no user-discernable difference between the M9101A module and the M9102A module. The difference is in the FPGA programming. In the M9102A module, relay RL66 is loaded but...
  • Page 32 M9102A Multiplexer, 128 channel, 1-wire Reed Relays Introduction Pin No. Channel Pin No. Channel Pin No. Channel Pin No. Channel Ch 7 Ch 5 Ch 3 Ch 1 Ch 8 Ch 6 Ch 4 Ch 2 Ch 15 Ch 13 Ch 11 Ch 9 Ch 16...

  • Page 33: Troubleshooting And Functional Verification Testing

    Troubleshooting and Functional Verification Testing M9102A Multiplexer, 128 channel, 1-wire Reed Relays Troubleshooting and Functional Verification Testing To troubleshoot and verify the relays on the module, perform a closed channel resistance test on each channel. This procedure does not provide performance or specification verification.

  • Page 34: Channel To Relay Numbers

    M9102A Multiplexer, 128 channel, 1-wire Reed Relays Troubleshooting and Functional Verification Testing Channel to Relay Numbers Channel Relay Channel Relay Channel Relay Channel Relay Numbers Numbers Numbers Numbers 1, 2 33, 34 RL17 65, 66 RL33 97, 98 RL49 35, 36 RL18 67, 68 RL34...

  • Page 35: M9102A Functional Verification Test Record - Closed Channel Resistance34

    Troubleshooting and Functional Verification Testing M9102A Multiplexer, 128 channel, 1-wire Reed Relays M9102A Functional Verification Test Record - Closed Channel Resistance Channel Path Channel Path Resistance Measured Value Resistance Measured Value < 1.50  < 1.50  < 1.50  <...
  • Page 36 M9102A Multiplexer, 128 channel, 1-wire Reed Relays Troubleshooting and Functional Verification Testing Channel Path Channel Path Resistance Measured Value Resistance Measured Value < 1.50  < 1.50  < 1.50  < 1.50  < 1.50  < 1.50  <...

  • Page 37: M9102A Schematic

    M9102A Schematic M9102A Multiplexer, 128 channel, 1-wire Reed Relays M9102A Schematic Note: RL66 (see Notes below) is installed on the module but not used on the M9102A. Figure 9 M9102A Schematic Notes: - Numbers in parenthesis are front panel connector pin numbers. - RL66 is loaded on the PC board but is not used on the M9102A module.

  • Page 38: M9102A Pc Board Layout

    M9102A Multiplexer, 128 channel, 1-wire Reed Relays M9102A Schematic M9102A PC Board Layout Black box indicates Pin 1 Figure 10 M9102A PC Board Relay Layout Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 39 M9102A Schematic M9102A Multiplexer, 128 channel, 1-wire Reed Relays Figure 11 shows the back side (solder side of the M9102A) and also shows the relay contact connections (the center two terminals are for the relay coil drive). Note that relays RL65, RL66, and RL67 are reversed. Figure 11 Back side (solder side) of M9102A showing relay contacts Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 40 M9102A Multiplexer, 128 channel, 1-wire Reed Relays M9102A Schematic Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...

  • Page 41: M9103A Multiplexer, 99 Channel, 2-Wire Armature Relays

    PXI Matrix and Multiplexer Modules Maintenance Guide M9103A Multiplexer, 99 channel, 2-wire Armature Relays Introduction Keysight’s M9103A high density multiplexer module operates as a conventional multiplexer module with break-before-make action. This module uses armature relays. Relays on this module are Ruthenium sputtered reed relays. Front panel connections are through a high density 200 pin Low Force Helix (LFH) connector.
  • Page 42 M9103A Multiplexer, 99 channel, 2-wire Armature Relays Introduction Pin No. Channel Pin No. Channel Pin No. Channel Pin No. Channel Ch 4 H Ch 3 H Ch 2 H Ch 1 H Ch 4 L Ch 3 L Ch 2 L Ch 1 L Ch 8 H Ch 7 H...

  • Page 43: Troubleshooting And Functional Verification Testing

    Troubleshooting and Functional Verification Testing M9103A Multiplexer, 99 channel, 2-wire Armature Relays Troubleshooting and Functional Verification Testing To troubleshoot and verify the relays on the module, perform a closed channel resistance test on each channel. This procedure does not provide performance or specification verification.

  • Page 44: M9103A Functional Verification Test Record - Closed Channel Resistance43

    M9103A Multiplexer, 99 channel, 2-wire Armature Relays Troubleshooting and Functional Verification Testing M9103A Functional Verification Test Record - Closed Channel Resistance Channel Path Channel Path Resistance Measured Value Resistance Measured Value < 1.0  < 1.0  < 1.0  <...
  • Page 45 Troubleshooting and Functional Verification Testing M9103A Multiplexer, 99 channel, 2-wire Armature Relays Channel Path Channel Path Resistance Measured Value Resistance Measured Value < 1.0  < 1.0  < 1.0  < 1.0  < 1.0  < 1.0  <...

  • Page 46: M9103A Schematic

    M9103A Multiplexer, 99 channel, 2-wire Armature Relays M9103A Schematic M9103A Schematic Note: RL102 (see Notes below) is loaded on the pc board but is not used on the Figure 14 M9103A Schematic Notes: - Numbers in parenthesis are front panel connector pin numbers. - RL102 is loaded on the PC board but is not used on the M9103A module.

  • Page 47: M9103A Pc Board Layout

    M9103A Schematic M9103A Multiplexer, 99 channel, 2-wire Armature Relays M9103A PC Board Layout Figure 15 M9103A PC Board Relay Layout Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 48 M9103A Multiplexer, 99 channel, 2-wire Armature Relays M9103A Schematic Figure 16 shows the backside (solder side of the M9103A) and also shows the relay contact connections. Figure 16 Back side (solder side) of M9103A showing relay contacts Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...

  • Page 49: M9120A Matrix Switch, 4X32, 2-Wire Armature Relays

    PXI Matrix and Multiplexer Modules Maintenance Guide M9120A Matrix Switch, 4x32, 2-wire Armature Relays Introduction Each M9120A Matrix Switch module is constructed as four separate matrices; each matrix is 32x1 for a total of 128 two pole armature relays. The schematics (Figure 19 and Figure 20) are drawn as four separate matrices (one matrix for each row).
  • Page 50 M9120A Matrix Switch, 4x32, 2-wire Armature Relays Introduction Signal Signal Signal Signal Col 1 H Col 1 L Col 2 H Col 2 L Col 3 H Col 3 L Col 4 H Col 4 L Col 5 H Col 5 L Col 6 H Col 6 L Col 7 H...

  • Page 51: Troubleshooting And Functional Verification Testing

    Troubleshooting and Functional Verification Testing M9120A Matrix Switch, 4x32, 2-wire Armature Relays Troubleshooting and Functional Verification Testing To troubleshoot and verify the 128 cross point relays on the module, perform a closed channel resistance test on each row/column cross point. This procedure does not provide performance or specification verification.Each M9120A Matrix Switch module is constructed as four separate matrices;...

  • Page 52: M9120A Functional Verification Test Record - Closed Channel Resistance51

    M9120A Matrix Switch, 4x32, 2-wire Armature Relays Troubleshooting and Functional Verification Testing (numbers in parenthesis are front panel connector pin numbers) Figure 18 M9120A Contact Resistance Test Note that this includes two relay contacts -- the two cross point channel relay contacts (Hi and Lo).
  • Page 53 Troubleshooting and Functional Verification Testing M9120A Matrix Switch, 4x32, 2-wire Armature Relays Row/Col Path Row/Col Path Path Resistance Measured Value Path Resistance Measured Value < 1.40  < 1.40  R1Col10 R2Col10 < 1.40  < 1.40  R1Col11 R2Col11 R1Col12 <...
  • Page 54 M9120A Matrix Switch, 4x32, 2-wire Armature Relays Troubleshooting and Functional Verification Testing Row/Col Path Row/Col Path Path Resistance Measured Value Path Resistance Measured Value < 1.40  < 1.40  R3Col6 R4Col6 < 1.40  < 1.40  R3Col7 R4Col7 R3Col8 <...

  • Page 55: M9120A Schematic

    M9120A Schematic M9120A Matrix Switch, 4x32, 2-wire Armature Relays M9120A Schematic Figure 19 M9120A Schematic (Rows 1 and 2) numbers in parenthesis are front panel connector pin numbers Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 56 M9120A Matrix Switch, 4x32, 2-wire Armature Relays M9120A Schematic Figure 20 M9120A Schematic (Rows 3 and 4) numbers in parenthesis are front panel connector pin numbers Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...

  • Page 57: M9120A Pc Board Layout

    M9120A Schematic M9120A Matrix Switch, 4x32, 2-wire Armature Relays M9120A PC Board Layout Figure 21 M9120A PC Board Relay Layout Relays 129 and 130 on the PC board, are used for internal Keysight testing only. Relays 129 and 130 Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 58 M9120A Matrix Switch, 4x32, 2-wire Armature Relays M9120A Schematic Figure 22 M9120A Backside (solder side) of PC Board showing relay locations Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...

  • Page 59: M9121A Matrix Switch, 4X64, 2-Wire Reed Relays

    PXI Matrix and Multiplexer Modules Maintenance Guide M9121A Matrix Switch, 4x64, 2-wire Reed Relays Introduction Keysight’s M9121A Matrix Switch module is an ultra high density module configured as a 64 column by four row matrix. Each relay is a 2-pole switch. The 256 relays on this modules are high reliability sputtered Ruthenium reed relays, offering >10 operations to provide long life and stable contact resistance.
  • Page 60 M9121A Matrix Switch, 4x64, 2-wire Reed Relays Introduction Pin No. Channel Pin No. Channel Pin No. Channel Pin No. Channel Col 1 H Col 2 H Col 3H Col 4 H Col 1 L Col 2 L Col 3 L Col 4 L Col 5 H Col 6 H...

  • Page 61: Troubleshooting And Functional Verification Testing

    Troubleshooting and Functional Verification Testing M9121A Matrix Switch, 4x64, 2-wire Reed Relays Troubleshooting and Functional Verification Testing To troubleshoot and verify the 256 cross point relays on the module, perform a closed channel resistance test on each row/column cross point. This procedure does not provide performance or specification verification.

  • Page 62: M9121A Functional Verification Test Record -- Closed Channel Resistance61

    M9121A Matrix Switch, 4x64, 2-wire Reed Relays Troubleshooting and Functional Verification Testing Note that this includes two relay contacts -- the two channel relay contacts (Hi and Lo). The typical initial path resistance is approximately 900 m.. Alternately, you can measure the contact resistance COL Hi to the Row Hi terminals and then from the COL Lo to the Row Lo terminals.
  • Page 63 Troubleshooting and Functional Verification Testing M9121A Matrix Switch, 4x64, 2-wire Reed Relays Row/Col Path Row/Col Path Path Resistance Measured Value Path Resistance Measured Value R1Col38 < 2.70  R2Col38 < 2.70  < 2.70  < 2.70  R1Col39 R2Col39 <...
  • Page 64 M9121A Matrix Switch, 4x64, 2-wire Reed Relays Troubleshooting and Functional Verification Testing Row/Col Path Row/Col Path Path Resistance Measured Value Path Resistance Measured Value R3Col23 < 2.70  R4Col23 < 2.70  < 2.70  < 2.70  R3Col24 R4Col24 <...

  • Page 65: M9121A Schematic

    M9121A Schematic M9121A Matrix Switch, 4x64, 2-wire Reed Relays M9121A Schematic Figure 25 M9121A Schematic (Row 1) numbers in parenthesis are front panel connector pin numbers Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 66 M9121A Matrix Switch, 4x64, 2-wire Reed Relays M9121A Schematic Figure 26 M9121A Schematic (Row 2) numbers in parenthesis are front panel connector pin numbers Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 67 M9121A Schematic M9121A Matrix Switch, 4x64, 2-wire Reed Relays Figure 27 M9121A Schematic (Row 3) numbers in parenthesis are front panel connector pin numbers Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 68 M9121A Matrix Switch, 4x64, 2-wire Reed Relays M9121A Schematic Figure 28 M9121A Schematic (Row 4) numbers in parenthesis are front panel connector pin numbers Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...

  • Page 69: M9121A Pc Board Layout

    M9121A Schematic M9121A Matrix Switch, 4x64, 2-wire Reed Relays M9121A PC Board Layout Figure 29 M9121A PC Board Relay Layout Relays 258 and 259 on the PC board, are used for internal Keysight testing only. Relays 129 and 130 Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 70 M9121A Matrix Switch, 4x64, 2-wire Reed Relays M9121A Schematic Figure 30 M9121A Backside of PC Board (solder side) Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...

  • Page 71: M9122A Matrix Switch, 8X32, 1-Wire Armature Relays

    PXI Matrix and Multiplexer Modules Maintenance Guide M9122A Matrix Switch, 8x32, 1-wire Armature Relays Introduction Keysight’s M9122A Matrix Switch module is a high density module configured as a 32 column by eight row matrix. Each relay is a single-pole switch. The 256 cross point relays on this modules are high reliability Palladium-Ruthenium, gold plated, bifurcated armature relays, providing long life and stable contact resistance.

  • Page 72: Troubleshooting And Functional Verification Testing

    M9122A Matrix Switch, 8x32, 1-wire Armature Relays Troubleshooting and Functional Verification Testing Signal Signal Signal Row 3 Row 2 Row 1 Row 6 Row 5 Row 4 Row 8 Row 7 Col 3 Col 2 Col 1 Col 6 Col 5 Col 4 Col 9 Col 8...
  • Page 73 Troubleshooting and Functional Verification Testing M9122A Matrix Switch, 8x32, 1-wire Armature Relays Remove all user wiring and connections from the plug-in modules before troubleshooting or verification. When all relays are “open,” a resistance measured on any channel path indicates a welded contacts condition and the relay or module must be replaced. There is no specific path resistance or test for this failure.

  • Page 74: M9122A Functional Verification Test Record - Closed Channel Resistance73

    M9122A Matrix Switch, 8x32, 1-wire Armature Relays Troubleshooting and Functional Verification Testing M9122A Functional Verification Test Record - Closed Channel Resistance Row/Col Path Row/Col Path Path Resistance Measured Value Path Resistance Measured Value Row 1 Row 2 R1Col1 < 1.40 R2Col1 <...
  • Page 75 Troubleshooting and Functional Verification Testing M9122A Matrix Switch, 8x32, 1-wire Armature Relays Row/Col Path Row/Col Path Path Resistance Measured Value Path Resistance Measured Value Row 3 Row 4 R3Col1 < 1.40 R4Col1 < 1.40 R3Col2 < 1.40 R4Col2 < 1.40 R3Col3 <...
  • Page 76 M9122A Matrix Switch, 8x32, 1-wire Armature Relays Troubleshooting and Functional Verification Testing Row/Col Path Row/Col Path Path Resistance Measured Value Path Resistance Measured Value Row 5 Row 6 R5Col1 < 1.40 R6Col1 < 1.40 R5Col2 < 1.40 R6Col2 < 1.40 R5Col3 <...
  • Page 77 Troubleshooting and Functional Verification Testing M9122A Matrix Switch, 8x32, 1-wire Armature Relays Row/Col Path Row/Col Path Path Resistance Measured Value Path Resistance Measured Value Row 7 Row 8 R7Col1 < 1.40 R8Col1 < 1.40 R7Col2 < 1.40 R8Col2 < 1.40 R7Col3 <...

  • Page 78: M9122A Schematic

    M9122A Matrix Switch, 8x32, 1-wire Armature Relays M9122A Schematic M9122A Schematic Figure 33 M9122A Schematic (Rows 1 and 2, motherboard) numbers in parenthesis are front panel connector pin numbers Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 79 M9122A Schematic M9122A Matrix Switch, 8x32, 1-wire Armature Relays Relays 121 through 128 are physically mounted on the M9122A Daughter PC Board. Figure 34 M9122A Schematic (Rows 3 and 4, motherboard and daughter board) numbers in parenthesis are front panel connector pin numbers Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 80 M9122A Matrix Switch, 8x32, 1-wire Armature Relays M9122A Schematic Figure 35 M9122A Schematic (Rows 5 and 6, daughter board) numbers in parenthesis are front panel connector pin numbers Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 81 M9122A Schematic M9122A Matrix Switch, 8x32, 1-wire Armature Relays Figure 36 M9122A Schematic (Rows 7 and 8, daughter board) numbers in parenthesis are front panel connector pin numbers Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...

  • Page 82: M9122A Pc Board Layout

    M9122A Matrix Switch, 8x32, 1-wire Armature Relays M9122A Schematic M9122A PC Board Layout Figure 37 M9122A PC Motherboard Layout Relays 258 and 259 on the PC board, are used for internal Keysight testing only. Relays 129 and 130 Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 83 M9122A Schematic M9122A Matrix Switch, 8x32, 1-wire Armature Relays Figure 38 M9122A PC Daughter board Layout Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 84 M9122A Matrix Switch, 8x32, 1-wire Armature Relays M9122A Schematic Figure 39 M9122A Backside of PC Motherboard (solder side) showing relay locations Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 85 M9122A Schematic M9122A Matrix Switch, 8x32, 1-wire Armature Relays Figure 40 M9122A Backside of PC daughter board (solder side) showing relay locations Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...
  • Page 86 M9122A Matrix Switch, 8x32, 1-wire Armature Relays M9122A Schematic Keysight PXI Matrix and Multiplexer Modules Maintenance Guide...

  • Page 87: Index

    Daughter Boards M9103 Path resistance replacement part functional verification test numbers record PC board layout M9103A M9101A connector and pinout M9102A contact resistance test Electrostatic discharge M9103A default switch path precautions M9120A PC Board Layout End-of-Life Detection...
  • Page 88 Index Test Conditions Test equipment recommended Typical Path Resistances Verification functional operational Keysight PXI Matrix and Multiplexer Service Guide...
  • Page 90 This information is subject to change without notice. © Keysight Technologies, 2014-2018 Edition 3, December 2018 *M9101-90005* M9101-90005 www.keysight.com...

This manual is also suitable for:

M9102aM9103aM9120aM9121aM9122a

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