Posted Mon, 17 Oct 2022 17:03:22 GMT by McKinney, Ty

Currently using a Keithley 2701 to read 4-wire resistance in channels 101:105, 2-wire resistance in channels 106:110 and 116:120. In my VI, when passing this list of channels, the VI (Virtual Interface) throws an error. However, when I only use 106:110, 116:120, it works. How do I include the 4-wire measurements in the channel list?

Posted Mon, 17 Oct 2022 17:10:48 GMT by McKinney, Ty
To take proper 4-Wire resistance measurements with your scan card, the channels must be paired. For example, on a 20-channel card, channels 1-10 can be used as a system channel and 11-20 can be used as the paired channels. CH 1 and 11 will be paired together, 2 and 12, 3 and 13, and so on. See the attached reference manual pages 2-7 through 2-9 and that should supply more in-depth information as well as a schematic of what that configuration would look like.
https://download.tek.com/manual/2701-900-01G_Feb_2016.pdf Model 2701 Ethernet-Based DMM / Data Acquisition System User's Manual

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