In this section:
Model 3724 dual 1x30 FET multiplexer card ............................ 8-1
Introduction to the Model 3724 card......................................... 8-1
Available accessories: Model 3724 .......................................... 8-2
Connection information: Model 3724........................................ 8-2
Schematics: Model 3724 .......................................................... 8-3
Introduction to the Model 3724 card
The Model 3724 has two independent banks of 1×30 2-pole multiplexers. It is ideal for general-
purpose switching, including temperature measurements. The two banks can automatically be
connected to the Series 3700A mainframe backplane and an optional digital multimeter (DMM)
through the analog backplane connection relays. 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 3724 include its ability to be reconfigured to coordinated four-pole
operation for additional measurement flexibility. Furthermore, the Model 3724 supports thermocouple-
type temperature measurements with the Model 3724-ST (screw terminal) accessory, providing
automatic cold junction compensation (CJC).
The Model 3724 uses two 78-pin male D-sub connectors for signal connections. For screw terminal or
automatic CJC, use the detachable Model 3724-ST accessory.
Figure: Model 3724 card
Figure 24: Model 3724 Dual 1x30 FET Multiplexer
Section 8
Model 3724 FET multiplexer card