Keysight / Agilent 44421A Overview

The HP 44421A is a 20 Channel Relay Multiplexer Assembly used with the 3497A.

Reed relay multiplex card to be used in the 3497A Data Acquisition System

Each card switches 20 channels and each channel has a HI, Lo, and Guard line

Low thermal offset of the relays make it suitable for measuring the outputs of strain gages and other transducers

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