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NI PXIe-2738 Features
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NI PXIe-2738 Features

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PXIe-2738
Features
2024-03-26

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Summary of Contents for NI PXIe-2738

  • Page 1 PXIe-2738 Features 2024-03-26...
  • Page 2 PXIe-2738 Overview........
  • Page 3 PXIe-2738 Features PXIe-2738 Overview PXIe-2738 Pinout © National Instruments...
  • Page 4 PXIe-2738 Features C0– C1– C2– C3– R0– C4– C5– C6– C7– R1– C8– C9– C11+ C10– C11– C10+ R2– C13+ C12– C13– C12+ C15+ C14– C15– C14+ R3– C17+ C16– C17– C16+ C19+ C18– C19– C18+ R0– C21+ C20– C21–...
  • Page 5 PXIe-2738 Features Table 1. Signal Descriptions Signal Description Positive column connection Negative column connection Positive row connection Negative row connection PXIe-2738 Topology Module software name: 2738/2-Wire 8x32 Matrix (NISWITCH_TOPOLOGY_2738_2_WIRE_8X32_MATRIX) This configuration supports immediate and scanning operation modes. 1-Wire 8×32 Matrix (C0+, C0–)

  • Page 6: Making A Connection

    For example, to connect row 1 to column 1, call the niSwitch Connect Channels VI or the niSwitch_Connect function with the channel 1 parameter set to r1 and the channel 2 parameter set to c1, or vice versa. PXIe-2738 Relay Replacement The module uses electromechanical armature relays. Replacement Relay...
  • Page 7 PXIe-2738 Features Locate the Relay 1. Ground yourself using a grounding strap or a ground connected to your PXI Express chassis. Note Properly grounding yourself prevents damage to your module from electrostatic discharge. 2. Locate the relay you want to replace.
  • Page 8 PXIe-2738 Features PCB 2 - Daughterboard PCB 1 Relay Locations Relay Reference Relay Reference Relay Reference Relay Reference Name Designator Name Designator Name Designator Name Designator kr0c0 kr2c0 kr0c16 kr2c16 kr0c1 kr2c1 kr0c17 kr2c17 kr0c2 kr2c2 kr0c18 kr2c18 kr0c3 kr2c3...
  • Page 9 PXIe-2738 Features Relay Reference Relay Reference Relay Reference Relay Reference Name Designator Name Designator Name Designator Name Designator kr0c13 kr2c13 kr1c17 kr3c17 kr0c14 kr2c14 kr1c18 kr3c18 kr0c15 kr2c15 kr1c19 kr3c19 kr1c0 kr3c0 kr1c20 kr3c20 kr1c1 kr3c1 kr1c21 kr3c21 kr1c2 kr3c2...
  • Page 10 PXIe-2738 Features Relay Referenc Relay Referenc Relay Referenc Relay Referenc Relay Referenc Name Name Name Name Name Designat Designat Designat Designat Designat kr1c29 kr4c5 kr6c5 kr4c21 kr6c21 kr1c30 kr4c6 kr6c6 kr4c22 K102 kr6c22 kr1c31 kr4c7 kr6c7 kr4c23 K101 kr6c23 kr2c28...

  • Page 11: Disassemble The Module

    1. Remove the four screws that secure PCB 2 to the switch assembly. 2. Gently separate PCB 1 and PCB 2. Replace the Relay Note NI recommends using lead-free solder for relay replacement on lead-free assemblies, and lead solder for relay replacement on lead assemblies. Note Do not rework lead assemblies using a lead-free work station.
  • Page 12 Complete Disassemble the Module in reverse order to reassemble your module. Note In NI-SWITCH 3.1 or later, you can use the Switch Soft Front Panel to reset the relay count after you have replaced a failed relay. Refer to the Switch Soft Front Panel Help for more information ni.com...

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