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Test Accessory, Multiplexer Card, Keithley 3700 & 3700A Series Mainframes, DMM Cards


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Manufacturer Part No:
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DMM Cards
Technical Datasheet:
3720   Datasheet
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Product Information

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Multiplexer Card

Keithley 3700 & 3700A Series Mainframes

DMM Cards

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Technical Documents (3)

Product Overview

The 3720 is a Multiplexer Card offers two independent banks of 1 x 30 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 1 x 60 two-pole multiplexer or to enable card-to-card expansion for even larger configurations. Other features of the device include its ability to be reconfigured to coordinated four-pole operation for additional measurement flexibility. Furthermore, the device supports thermocouple type temperature measurements when used with the Model 3720-ST (screw terminal) accessory providing automatic cold junction compensation (CJC). It uses two 78-pin male D-sub connectors for signal connections.
  • Screw terminal connections provided with removable 3720-ST accessory
  • Relay closures stored in on-board memory
  • Latching electromechanical relays
  • 300V, 1A Switched or 2A carry signal capacity (60W, 125VA)


Industrial, Signal Processing, Test & Measurement


In addition, we have calibration services for this product (Europe Only). Visit our calibration service page to see details of what options are available.

Available for back order

More stock available to supplier lead times which is approximately 10/23/23

Due to market conditions delivery times are for general guidance only and may be subject to change at short notice

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