Section 9: Series 3700 Module Schematics and Connections
Series 3700 System Switch/Multimeter User's Manual
9-60
3700S-900-01 Rev. C / July 2008
Model 3740 32-channel isolated switch card
The Model 3740 offers 28 general-purpose form C channels that are ideal for
routing power or other control devices. For higher power applications of up to
7 A, four additional high-current form A channels are provided.
If any general-purpose signal requires routing to the Series 3700 mainframe
backplane, terminal blocks that can be enabled through jumpers are located on
the card. Custom configurations can be created with the user-accessible
terminal blocks. For additional protection, an onboard temperature sensor
notifies the mainframe when the card’s operating temperature exceeds 70° C,
compromising system specifications.
The Model 3740 uses two 50-pin male D-sub connectors for signal connections.
For screw terminal connections, use the detachable Model 3740-ST accessory.
Figure 9-46: Model 3740
Available accessories: Model 3740
3721-MTC-1.5:
50-pin, female-to-male, D-sub cable assembly, 1.5 m (4.9 ft)
3721-MTC-3:
50-pin, female-to-male, D-sub cable assembly, 3 m (9.8 ft)
3740-ST:
Screw terminal panel
3790-KIT50-R:
50-pin, female, D-sub connector kit (solder cup contacts). See
Connection
information: Model 3740
(on page 9-61).
