The Model 3720 offers two independent banks of 1×30 two-pole multiplexers. It is ideal for general
purpose switching, including temperature measurements. The two banks can automatically be
connected to the Series 3700 mainframe backplane and optional DMM through the analog backplane
This connection allows the mainframe to reconfigure the card to a single 1×60
two-pole multiplexer or to enable card-to-card expansion for even larger configurations.
Other features of the Model 3720 include its ability to be reconfigured to coordinated four-pole
operation for additional measurement flexibility.
Furthermore, the Model 3720 supports thermocouple-type
temperature measurements when used with the Model 3720-ST (screw terminal)
accessory providing automatic cold junction compensation (CJC).
The Model 3720 uses two 78-pin male D-sub connectors for signal connections. For screw terminal
or automatic CJC, use the detachable Model 3720-ST accessory