The Keithley 3720 is a Dual 1x30 Multiplexer Plug-In Card that offers two independent banks of 1x30 two-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 optional DMM through the analogue backplane connection relays. This connection allows the mainframe to reconfigure the card to a single 1x 60 two-pole multiplexer or to enable card-to-card expansion for even larger configurations.
Other features of the 3720 include its ability to be reconfigured to coordinated four-pole operation for additional measurement flexibility. Furthermore, the 3720 supports thermocouple type temperature measurements when used with the 3720-ST (screw terminal) accessory providing automatic cold junction compensation (CJC). The 3720 uses two 78-pin male D-sub connectors for signal connections.
- 60 two-pole channels or 30 four-pole channels for general purpose switching
- Automatic CJC for temperature measurements when used with 3720-ST accessory
- Analogue backplane connection relays provide easy bank and card interconnections
- 300V, 1A switched or 2A carry signal capacity; 60W, 125VA
- Screw terminal connections provided with removable 3720-ST accessory
- Relay closures stored in onboard memory
- Latching electromechanical relays
- Manufacturer's part: Keithley 3720
| Type |
Multiplexer card |
| Channels |
2 x 30 |
| Interface |
Ethernet, GPIB, USB |
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