Tektronix KEITHLEY 3732 Instructions Manual

Quad 4×28 reed relay card

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Keithley Instruments

28775 Aurora Road

Cleveland, Ohio 44139

1-800-833-9200

tek.com/keithley

Introduction

The ultra-high density 3732 matrix card is comprised of four banks, each with 4 rows by 28 columns of reed

relays. This provides 448 single-pole crosspoints for maximum connection versatility in high channel count

applications. For even greater flexibility, bank configuration relays are mounted on the card. They offer an

automated method of connecting banks to enable two additional matrix configurations: Single 4×112 and dual

4×56. This feature allows the matrix size to be easily adapted to existing or future applications. For differential

(2-wire) measurements, you can select two-pole mode, which enables automatic pairing of crosspoints to create

a dual 4×28 or single 4×56 configuration. For larger matrix sizes, analog backplane relays are provided that

enable rows to connect to the Series 3700A mainframe backplane. This allows, for example, a matrix of up to 4

rows by 672 columns within a single 3706A mainframe using six 3732 cards.

The 3732 card is shown in the following figure.

Item shipped may vary from model pictured here.

077184000 October 2024

Model 3732 Quad 4×28 Reed Relay Card

Figure 1: Model 3732 Quad 4x28 Reed Relay Matrix Card

*P077184000*

Instructions

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Summary of Contents for Tektronix KEITHLEY 3732

Page 1 Model 3732 Quad 4×28 Reed Relay Card Keithley Instruments Instructions 28775 Aurora Road Cleveland, Ohio 44139 1-800-833-9200 tek.com/keithley Introduction The ultra-high density 3732 matrix card is comprised of four banks, each with 4 rows by 28 columns of reed relays. This provides 448 single-pole crosspoints for maximum connection versatility in high channel count applications.
Page 2 Model 3732 Quad 4×28 Reed Relay Card Instructions The 3732 card uses optimized reed relays that offer both low contact potential and low current offset to minimize the switching errors that often accompany this relay technology. Additionally, these relays provide greater signal voltage (200 V) and current (1.2 A carry) dynamic range while supporting the long life and fast actuation times necessary in many automated test applications.
Page 3 Model 3732 Quad 4×28 Reed Relay Card Instructions Safety precautions for connections Shock hazard. To prevent electric shock that could result in serious injury or death, comply with these safety precautions. Connection information for plug-in cards is intended for qualified service personnel. Do not attempt to connect devices under test (DUTs) or external circuitry to a plug-in card unless you are qualified.
Page 4 Model 3732 Quad 4×28 Reed Relay Card Instructions To install a switching card into the instrument mainframe: 1. Turn the instrument off. 2. Position the instrument so that you are facing the rear panel. 3. Disconnect the power line cord and any other cables connected to the rear panel. 4.
Page 5 Model 3732 Quad 4×28 Reed Relay Card Instructions Verify card installation To verify that the card was properly installed: 1. If the 3700A is controlled remotely (REM is displayed), press EXIT to switch control to local. 2. On the 3700A front panel, press SLOT. The name and firmware version of the instrument is displayed. 3.
Page 6 Model 3732 Quad 4×28 Reed Relay Card Instructions Interlock pin numbers The interlock circuit of the 3732 is on banks 1, 2, 3, and 4 using interlock pins J3-76 and J3-78. The affected backplane relays are s0911 through s0918. To prevent instrument damage or loss of functionality, make sure high-voltage analog signals are not wired to the interlock pins.
Page 7 Model 3732 Quad 4×28 Reed Relay Card Instructions Configuration and connection choices overview Before configuring your card, you need to decide which base matrix configuration to use and how to wire the connections. The options are shown in the following table. Configuration type Mode Matrix configurations...
Page 8 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732-ST-C screw-terminal accessory The 3732-ST-C screw-terminal accessory is shown in the following figure. The 3732-ST-C is labeled to show the correct connections for the quad 4×28 configuration. For other configurations, overlays are provided with the screw-terminal accessory that you can insert to show the correct wiring for the dual 4×56, single 4×112, dual 4×28 (2-pole), and single 4×56 (2-pole) configurations.
Page 9 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732-ST-R screw-terminal accessory The 3732-ST-R screw-terminal accessory is shown in the following figure. The 3732-ST-R is labeled to show the correct connections for the dual 8×28 configuration. You can insert overlays (provided with the screw-terminal accessory) that show the correct wiring for the single 16×28 and single 8×28 (2-pole) configurations.
Page 10 Model 3732 Quad 4×28 Reed Relay Card Instructions Wire the screw-terminal accessory These instructions describe how to connect wiring to a Series 3700A screw-terminal accessory. It is not necessary to remove a circuit board from its enclosure to wire the screw-terminal accessory.
Page 11 Model 3732 Quad 4×28 Reed Relay Card Instructions 3. Select the correct overlay and press it into place inside the screw-terminal accessory. 4. As shown in the following figure, route your wiring through the slots at the rear of the screw-terminal accessory and connect it to the wiring terminals as needed for your configuration.
Page 12 Model 3732 Quad 4×28 Reed Relay Card Instructions 5. When all wires have been connected, use small cable ties to secure the wires and provide strain relief, as shown in the previous figure. Pass the cable tie in and out of the small holes in the base of the screw-terminal assembly and around your wiring before pulling the cable tie tight.
Page 13 Model 3732 Quad 4×28 Reed Relay Card Instructions To install the screw-terminal accessory on the 3700A plug-in card: 1. Remove all power from the 3700A instrument. 2. Make sure that the mounting screws (1 in the following figure) on the installed plug-in card are secure. Figure 9: Check 3700A card mounting screws 3.
Page 14 Model 3732 Quad 4×28 Reed Relay Card Instructions To prevent damage to the card, do not overtighten the knob. Remove the screw-terminal accessory To remove a screw-terminal accessory from an installed plug-in card: 1. Remove all power from the 3700A instrument. 2.
Page 15 Model 3732 Quad 4×28 Reed Relay Card Instructions Pin number identification Pin number identification for the Model 3732-MTC-3 cable is shown in the following figure and table. Figure 12: Model 3732-MTC-3 D-sub connectors Connect the drain wire to shield at both ends. Model 3732-MTC-3 pin number identification CONN 1 Color...
Page 16 Model 3732 Quad 4×28 Reed Relay Card Instructions CONN 1 Color CONN 2 CONN 1 Color CONN 2 White/black/orange White/black/orange/blue White/black/yellow White/green/gray White/black/green White/blue/violet White/black/blue White/blue/gray White/black/violet White/violet/gray White/black/gray White/black/brown/red White/brown/red White/black/brown/orange White/brown/orange White/black/brown/yellow White/brown/yellow White/black/brown/green White/brown/green White/black/brown/blue White/brown/blue White/black/brown/violet (spare) White/brown/violet White/black/red/green White/brown/gray...
Page 17 Model 3732 Quad 4×28 Reed Relay Card Instructions Matrix card channel examples Specifier Slot number Bank number Row number Column number 1A05 3C12 1104 11104 1203 213A4 3112 62101 Channel numbering example In the crosspoint schematics that are provided for each 3732 configuration, the numbers listed at each crosspoint indicate the slot, bank, row, and column, as shown in the following figure.
Page 18 Model 3732 Quad 4×28 Reed Relay Card Instructions The 3732 uses single-pole relays and operates in single-pole mode by default. In 2-pole operation, one relay bank is used for the high signals and the adjacent relay bank is used for the low signals.
Page 19 Model 3732 Quad 4×28 Reed Relay Card Instructions D-sub connections: Quad 4×28 configuration The following figure shows the J3 and J4 D-sub pin connections for the 3732 quad 4×28 configuration. To actuate the backplane, connect +ILK and −ILK. Figure 14: Quad 4×28 D-sub pin connections Pin assignments and signal naming: Quad 4×28 configuration The 3732 is set to the quad 4×28 configuration by default.
Page 20 Model 3732 Quad 4×28 Reed Relay Card Instructions Refer to the Screw-terminal accessories (on page 7) for more information about jumper settings. 3732 J3 D-sub connector pin assignments for the quad 4×28 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location...
Page 21 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J4 D-sub connector pin assignments for the quad 4×28 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C306 1 C322 C411 C313 2 C324 C310 C311 3 C323 C309 C312 4 C320...
Page 22 Model 3732 Quad 4×28 Reed Relay Card Instructions Matrix crosspoint schematic: Quad 4×28 configuration The following figure is a simplified crosspoint schematic of the quad 4×28 matrix configuration. Figure 15: 4×28 crosspoint matrix 077184000 October 2024...
Page 23 Model 3732 Quad 4×28 Reed Relay Card Instructions Quad 4×28 configuration connection logs Use this table to record your 3732 connection information in the quad 4×28 configuration (1 of 4). Pin signal Bank Connection name Color Description Row 1 Row 2 Row 3 Row 4 Column 1...
Page 24 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the quad 4×28 configuration (2 of 4). Pin signal Bank Connection name Color Description Row 1 Row 2 Row 3 Row 4 Column 1 C201 Column 2 C202 Column 3 C203...
Page 25 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the quad 4×28 configuration (3 of 4). Pin signal Bank Connection name Color Description Row 1 Row 2 Row 3 Row 4 Column 1 C301 Column 2 C302 Column 3 C303...
Page 26 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the quad 4×28 configuration (4 of 4). Pin signal Bank Connection name Color Description Row 1 Row 2 Row 3 Row 4 Column 1 C401 Column 2 C402 Column 3 C403...
Page 27 Model 3732 Quad 4×28 Reed Relay Card Instructions Dual 4×56 1-pole configuration The dual 4×56 1-pole configuration allows you to create two banks of 224 crosspoints using bank configuration relays mounted on the 3732 card. The columns of these two banks can then be connected using jumpers, relays, or the 3732-ST-C screw-terminal accessory.
Page 28 Model 3732 Quad 4×28 Reed Relay Card Instructions Signal Connector and pin location Configuration option 1 Configuration option 2 BPID1 J4, Pin 76 Open (no connection) J4, Pin 77 BPID2 J4, Pin 78 J4, Pin 77 Open (no connection) BPID3 J3, Pin 77 Open (no connection) Open (no connection)
Page 29 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J4 D-sub connector pin assignments for the dual 4× 56 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C206 1 C224 C209 C213 2 C223 C211 3 C220 C212 4 C218 C219 5...
Page 30 Model 3732 Quad 4×28 Reed Relay Card Instructions Schematic: Dual 4×56 configuration The following figure is a simplified crosspoint schematic of the dual 4×56 matrix configuration. Figure 17: Dual 4×56 simplified crosspoint schematic 077184000 October 2024...
Page 31 Model 3732 Quad 4×28 Reed Relay Card Instructions Dual 4×56 configuration connection logs Use this table to record your 3732 connection information for the dual 4×56 configuration (1 of 4). Model 3732 connection log for the dual 4×56 configuration: Bank 1 Pin signal Bank Connection...
Page 32 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the dual 4×56 configuration: Bank 1 Pin signal Bank Connection name Color Description Column 26 C126 Column 27 C127 Column 28 C128 Column 29 C129 Column 30 C130 Column 31 C131...
Page 33 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the dual 4×56 configuration: Bank 2 Pin signal Bank Connection name Color Description Row 1 Row 2 Row 3 Row 4 Column 1 C201 Column 2 C202 Column 3 C203 Column 4...
Page 34 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the dual 4×56 configuration: Bank 2 Pin signal Bank Connection name Color Description Column 27 C227 Column 28 C228 Column 29 C229 Column 30 C230 Column 31 C231 Column 32 C232...
Page 35 Model 3732 Quad 4×28 Reed Relay Card Instructions Single 4×112 1-pole configuration The single 4×112 1-pole configuration allows you to connect four banks of 112 crosspoints into a single matrix of 448 crosspoints using bank configuration relays mounted on the 3732 card. The columns of these four banks can then be connected using jumpers, relays, or the 3732-ST-C screw-terminal accessory.
Page 36 Model 3732 Quad 4×28 Reed Relay Card Instructions Pin assignments and signal naming: Single 4×112 configuration The following tables show the pin signal name for each pin on each of the D-sub connectors and list the location of the connection in the switch matrix. In the following tables, X indicates pins that are not connected.
Page 37 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J3 D-sub connector pin assignments for the single 4×112 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C106 1 C124 C109 C113 2 C123 C111 3 C120 C112 4 C118 C119 5 C117...
Page 38 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J4 D-sub connector pin assignments for the single 4×112 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C162 1 C180 C165 C169 2 C179 C167 3 C176 C168 4 C174 C175 5 C173...
Page 39 Model 3732 Quad 4×28 Reed Relay Card Instructions Schematic: Single 4×112 configuration The following figure is a simplified crosspoint schematic of the single 4×112 matrix configuration. 077184000 October 2024...
Page 40 Model 3732 Quad 4×28 Reed Relay Card Instructions Single 4×112 configuration connection logs Use this table to record your 3732 connection information for the single 4×112 configuration. Model 3732 connection log for the single 4×112 configuration Pin signal Bank Connection name Color Description...
Page 41 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the single 4×112 configuration Pin signal Bank Connection name Color Description Column 21 C121 Column 22 C122 Column 23 C123 Column 24 C124 Column 25 C125 Column 26 C126 Column 27 C127...
Page 42 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the single 4×112 configuration Pin signal Bank Connection name Color Description Column 47 C147 Column 48 C148 Column 49 C149 Column 50 C150 Column 51 C151 Column 52 C152 Column 53 C153...
Page 43 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the single 4×112 configuration Pin signal Bank Connection name Color Description Column 73 C173 Column 74 C174 Column 75 C175 Column 76 C176 Column 77 C177 Column 78 C178 Column 79 C179...
Page 44 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the single 4×112 configuration Pin signal Bank Connection name Color Description Column 99 C199 Column 100 C1A0 Column 101 C1A1 Column 102 C1A2 Column 103 C1A3 Column 104 C1A4 Column 105 C1A5...
Page 45 Model 3732 Quad 4×28 Reed Relay Card Instructions Dual 8×28 1-pole configuration The dual 8×28 1-pole configuration allows you to use row expansion to create two banks of 224 crosspoints using jumpers, relays, or the 3732-ST-R screw-terminal accessory. Each bank consists of 8 rows and 28 columns. If you are using the 3732-ST-R, set jumper J13 on the upper right corner of the 3732-ST-R card to ID1 OFF.
Page 46 Model 3732 Quad 4×28 Reed Relay Card Instructions Pin assignments and signal naming: Dual 8×28 configuration The following tables show the pin signal name for each pin on each of the D-sub connectors and list the location of the connection in the switch matrix. You can use direct wiring for connections to the 3732 card using the 3732-MTC-3 cables.
Page 47 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J3 D-sub connector pin assignments for the dual 8×28 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C106 1 C124 C109 C113 2 C123 C111 3 C120 C112 4 C118 C119 5 C117...
Page 48 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J4 D-sub connector pin assignments for the dual 8×28 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C206 1 C224 C209 C213 2 C223 C211 3 C220 C212 4 C218 C219 5 C217...
Page 49 Model 3732 Quad 4×28 Reed Relay Card Instructions Schematic: Dual 8×28 configuration The following figure is a simplified crosspoint schematic of the dual 8×28 matrix configuration. Figure 20: Dual 8×28 simplified crosspoint schematic 077184000 October 2024...
Page 50 Model 3732 Quad 4×28 Reed Relay Card Instructions Dual 8×28 configuration connection logs Use this table to record your 3732 connection information for the dual 8×28 configuration. Model 3732 connection log for the dual 8×28 configuration: Bank 1 Pin signal Bank Connection name...
Page 51 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the dual 8×28 configuration: Bank 1 Pin signal Bank Connection name Color Description Column 22 C122 Column 23 C123 Column 24 C124 Column 25 C125 Column 26 C126 Column 27 C127...
Page 52 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the dual 8×28 configuration: Bank 2 Pin signal Bank Connection name Color Description Column 12 C212 Column 13 C213 Column 14 C214 Column 15 C215 Column 16 C216 Column 17 C217...
Page 53 Model 3732 Quad 4×28 Reed Relay Card Instructions Single 16×28 1-pole configuration The single 16×28 configuration allows you to use row expansion to create a single bank consisting of 16 rows and 28 columns using jumpers, relays, or the 3732-ST-R screw-terminal accessory. If you are using the 3732-ST-R, set jumper J13 on the upper right corner of the 3732-ST-R card to ID1 ON.
Page 54 Model 3732 Quad 4×28 Reed Relay Card Instructions Pin assignments and signal naming: Single 16×28 configuration The following tables show the pin signal name for each pin on each of the D-sub connectors and list the location of the connection in the switch matrix. You can use direct wiring for connections to the 3732 card using the 3732-MTC-3 cables.
Page 55 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J3 D-sub connector pin assignments for the single 16×28 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C106 1 C124 C109 C113 2 C123 C111 3 C120 C112 4 C118 C119 5 C117...
Page 56 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J4 D-sub connector pin assignments for the single 16×28 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C106 1 C124 C109 R115 C113 2 C123 C111 3 C120 R114 C112 4 C118...
Page 57 Model 3732 Quad 4×28 Reed Relay Card Instructions Schematic: Single 16×28 configuration The following figure is a simplified crosspoint schematic of the single 16×28 matrix configuration. Figure 22: Single 16×28 simplified crosspoint schematic Single 16×28 configuration connection logs Use this table to record your 3732 connection information for the single 16×28 configuration. 077184000 October 2024...
Page 58 Model 3732 Quad 4×28 Reed Relay Card Instructions Pin signal Bank Connection name Color Description Row 1 Row 2 Row 3 Row 4 Row 5 Row 6 Row 7 Row 8 Row 9 Row 10 R110 Row 11 R111 Row 12 R112 Row 13 R113...
Page 59 Model 3732 Quad 4×28 Reed Relay Card Instructions Dual 4×28 2-pole configuration The dual 4×28 2-pole configuration allows you to automatically link four contact sets to function as two pairs. Using the internal relays, you can create a matrix consisting of two banks of paired crosspoints, each with four rows and up to 28 columns.
Page 60 Model 3732 Quad 4×28 Reed Relay Card Instructions Pin assignments and signal naming: Dual 4×28 2-pole configuration The following tables show the pin signal name for each pin on each of the D-sub connectors and list the location of the connection in the switch matrix. If you are directly wiring the card, wire the pins as shown in the following table.
Page 61 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J3 D-sub connector pin assignments for the dual 4×28 2-pole configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C106H C124H C109H R13L C113H C123H R11H 40 C111H C120H R12L C112H C118H...
Page 62 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J4 D-sub connector pin assignments for the dual 4×28 2-pole configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C106H C122H C111L R13L C113H C124H C110H R11H C111H C123H C109H R12L C112H...
Page 63 Model 3732 Quad 4×28 Reed Relay Card Instructions Schematic: Dual 4×28 2-pole configuration The following table is a simplified crosspoint schematic of the dual 4×28 2-pole matrix configuration. The low channels are paired with the high channels. Figure 24: Dual 4×28 2-pole simplified crosspoint schematic 077184000 October 2024...
Page 64 Model 3732 Quad 4×28 Reed Relay Card Instructions Dual 4×28 2-pole configuration connection logs Use this table to record your 3732 connection information for the dual 4×28 2-pole configuration. Model 3732 connection log for the dual 4×28 2-pole configuration: Bank 1 Pin signal Bank Connection...
Page 65 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the dual 4×28 2-pole configuration: Bank 1 Pin signal Bank Connection name Color Description Column 12 Low C112L Column 13 High C113H Column 13 Low C113L Column 14 High C114H Column 14 Low C114L...
Page 66 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the dual 4×28 2-pole configuration: Bank 2 Pin signal Bank Connection name Color Description Row 1 High R21H Row 1 Low R21L Row 2 High R22H Row 2 Low R22L Row 3 High R23H...
Page 67 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the dual 4×28 2-pole configuration: Bank 2 Pin signal Bank Connection name Color Description Row 1 High R21H Column 13 Low C213L Column 14 High C214H Column 14 Low C214L Column 15 High C215H...
Page 68 Model 3732 Quad 4×28 Reed Relay Card Instructions Single 4×56 2-pole configuration The single 4×56 2-pole configuration allows you to automatically link two contact sets to function as one pair. Using either direct cabling or the 3732-ST-C screw-terminal accessory, you can create a matrix consisting of one bank of paired crosspoints with four rows and up to 56 columns.
Page 69 Model 3732 Quad 4×28 Reed Relay Card Instructions Pin assignments and signal naming: Single 4×56 2-pole configuration The following tables show the pin signal name for each pin on each of the D-sub connectors and list the location of the connection in the switch matrix. If you are directly wiring the card, wire the pins as shown in the following table.
Page 70 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J3 D-sub connector pin assignments for the single 4×56 2-pole configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C106H C124H C109H R13H 38 C113H C123H R11H 40 C111H C120H R12H 54 C112H...
Page 71 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J4 D-sub connector pin assignments for the single 4×56 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C106L C124L C109L R13L C113L C123L R11L C111L C120L R12L C112L C118L R12L C119L...
Page 72 Model 3732 Quad 4×28 Reed Relay Card Instructions Figure 26: Single 4×56 simplified crosspoint schematic 077184000 October 2024...
Page 73 Model 3732 Quad 4×28 Reed Relay Card Instructions Single 4×56 2-pole configuration connection logs Use this table to record your 3732 connection information for the single 4×56 2-pole configuration (1 of 4). Model 3732 connection log for the single 4×56 2-pole configuration Pin signal Bank Connection...
Page 74 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the single 4×56 2-pole configuration Pin signal Bank Connection name Color Description Column 12 High C112H Column 12 Low C112L Column 13 High C113H Column 13 Low C113L Column 14 High C114H...
Page 75 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the single 4×56 2-pole configuration Pin signal Bank Connection name Color Description Column 28 Low C128L Column 29 High C129H Column 29 Low C129L Column 30 High C130H Column 30 Low C130L...
Page 76 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the single 4×56 2-pole configuration Pin signal Bank Connection name Color Description Column 45 High C145H Column 45 Low C145L Column 46 High C146H Column 46 Low C146L Column 47 High C147H...
Page 77 Model 3732 Quad 4×28 Reed Relay Card Instructions On the 3732-STC-R accessory, set the jumper to OFF. After setting up the hardware, use Series 3700A software to select 2-pole operation using the channel.setpole command. For more information, refer to the Series 3700A System Switch/Multimeter Reference Manual, available at tek.com/keithley.
Page 78 Model 3732 Quad 4×28 Reed Relay Card Instructions Pin assignments and signal naming: Single 8×28 2-pole configuration The following tables show the pin signal name for each pin on each of the D-sub connectors and list the location of the connection in the switch matrix. 3732 J3 D-sub connector pin assignments for the single 8×28 configuration Columns Rows...
Page 79 Model 3732 Quad 4×28 Reed Relay Card Instructions 3732 J4 D-sub connector pin assignments for the single 8×28 configuration Columns Rows Matrix Matrix Matrix Matrix location location location location C106L C124L C109L R17L C113L C123L R11L C111L C120L R16L C112L C118L R12L C119L...
Page 80 Model 3732 Quad 4×28 Reed Relay Card Instructions Schematic: Single 8×28 2-pole configuration The following figure shows a simplified crosspoint schematic of the single 8×28 2-pole matrix configuration. Figure 28: Single 8×28 simplified crosspoint schematic Single 8×28 2-pole configuration connection logs Use this table to record your 3732 connection information for the single 8×28 2-pole configuration.
Page 81 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the single 8×28 2-pole configuration Pin signal Bank Connection name Color Description Row 1 High R11H Row 1 Low R11L Row 2 High R12H Row 2 Low R12L Row 3 High R13H...
Page 82 Model 3732 Quad 4×28 Reed Relay Card Instructions Model 3732 connection log for the single 8×28 2-pole configuration Pin signal Bank Connection name Color Description Column 11 High C111H Column 11 Low C111L Column 12 High C112H Column 12 Low C112L Column 13 High C113H...
Page 83 Model 3732 Quad 4×28 Reed Relay Card Instructions Cross-card expansion You can use the Series 3700A analog backplane to expand the number of columns in a system beyond the capacity of a single 3732 card. The signal paths on the backplane can be used to interconnect the rows on up to six 3732 cards by closing the appropriate backplane relays on all the cards.
Page 84 Model 3732 Quad 4×28 Reed Relay Card Instructions Example 3: Configure an expanded 4×112 2-pole matrix ▪ Configure both 3732 cards as single 4×56 2-pole matrices. ▪ Close backplane relays 10913, 10914, 10915, 10916, 20913, 20914, 20915, and 20916. Using the Model 3732 with the 3700A digital multimeter The connection options for using the 3732 with the Series 3700A digital multimeter (DMM) are: ▪...
Page 85 Model 3732 Quad 4×28 Reed Relay Card Instructions Install jumpers A jumper connection method may be appropriate in some situations. You can install jumpers on the Series 3700A 15-pin analog backplane connector to route DMM connections from their default locations to one or more of the other backplane signal paths.
Page 86 Model 3732 Quad 4×28 Reed Relay Card Instructions When the instrument is turned off, the pseudocard settings are lost and the pseudocard is no longer assigned to the slot. To preserve the pseudocard setting through a power cycle, use a saved setup or a configuration script. The setup or script retains the model number of the card installed in each slot, including pseudocards.
Page 87 Model 3732 Quad 4×28 Reed Relay Card Instructions Maximum power usage with 3700A cards The 3700A plug-in cards can switch many relays at once, which can take a substantial amount of system power. The maximum power available in the 3700A is limited on a per-slot and per-bank basis, as shown in the following table.
Page 88 Model 3732 Quad 4×28 Reed Relay Card Instructions To determine how many relay operations can be performed, use the previous table to calculate the total power required by applying the following equation: + (N × P ) + (N × P Where: ▪...
Page 89 Model 3732 Quad 4×28 Reed Relay Card Instructions Totals for each bank are calculated as shown in the following table. Slot 1 Slot 2 Slot 3 Total Bank 1 power consumed = 1175 1175 + 1175 3525 Slot 4 Slot 5 Slot 6 Total Bank 2 power consumed =...
Page 90 Safety precautions The following safety precautions should be observed before using this product and any associated instrumentation. Although some instruments and accessories would normally be used with nonhazardous voltages, there are situations where hazardous conditions may be present. This product is intended for use by personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury.
Page 91 For safety, instruments and accessories must be used in accordance with the operating instructions. If the instruments or accessories are used in a manner not specified in the operating instructions, the protection provided by the equipment may be impaired. Do not exceed the maximum signal levels of the instruments and accessories. Maximum signal levels are defined in the specifications and operating information and shown on the instrument panels, test fixture panels, and switching cards.

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