Tutorial 7
Keysight 34970A/34972A User’s Guide 315
One-Wire (Single-Ended) Multiplexers
On the 34908A multiplexer, all of the 40 channels switch the HI input only, with a
common LO for the module. The module also provides a thermocouple reference
junction for making thermocouple measurements (for more information on the
purpose of an isothermal block, see page 283).
Channel 1
Channel 2
Channel 3
Channel 4
To DMM
Only one channel can be closed at a time; closing one channel will open the
previously closed channel.
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