Keithley model 3721 Dual 1x20 Multiplexer Card (auto CJC with 3721-ST)
The Model 3721 offers two independent banks of 1x30 two-pole multiplexers - ideal for general purpose switching, including temperature measurements.
* Can automatically be connected to the Series 3700A mainframe & optional DMM through the analog backplane connection relays
- allows the mainframe to reconfigure the card to a single 1x40 two-pole multiplexer or to enable card-to-card expansion
* two fused channels for current measurements
* 4-wire common side ohms input supports 40 channels of 4-wire ohms measurements
* Auto CJC for temp measurements