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HP 44421A
Multiplexer
The 44421A 20 Channel Relay Multiplexer Assembly is a 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. The low thermal
offset of the relays make it suitable for measuring the outputs of strain
gages and other transducers.
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