Agilent/Keysight 34937T

The Agilent/Keysight 34937T is a detachable terminal block accessory that enables discrete external wiring connections for the 34937A and L4437A General Purpose Switch modules installed in the Keysight 34980A Multifunction Switch/Measure Unit. It features screw-type terminals and integrates with the relay switching architecture of compatible GP Switch modules to support a wide range of switching applications.

Technical Specifications

• Wire Size Support: Up to 20 AWG for configurations with fewer than 100 connections; up to 24 AWG for configurations exceeding 100 connections


• Connection Type: Screw-type terminals for discrete external wiring


• Relay Ratings (34937A module): Four Form A (SPST) relays rated 5 A at 150 W per channel; twenty-eight Form C (SPDT) latching relays at 1 A; four Form A (SPST) latching relays at 5 A


• Power-Failure Configuration: Hardware jumper on the 34937A module defines the power-failure state of 5 A latching relays - open or maintained state upon system power loss


• Snubber Circuit Pads: Solder pads provided on the 34937T for addition of snubber circuits to 5 A relays, reducing reactive transients when switching inductive loads

Key Features

• Flexible discrete wiring architecture with screw-type connections


• Support for multiple wire gauges depending on connection density


• Solder pad integration for transient suppression on inductive switching applications


• Hardware-configurable relay power-failure behavior

Compatibility & Integration The 34937T plugs directly into Keysight 34937A and L4437A General Purpose Switch modules within the 34980A mainframe. Integration with the 34980A platform requires proper grounding of the protective earth terminal to AC power mains and compliance with applicable safety protocols when switching mains voltage or high-inductive loads.