Keithley Instruments Inc. 3721 DUAL 1X20 MULTIPLEX CARD (AUTO CJC WITH 3721-ST)
The Keithley 3721 Dual 1x20 Multiplexer Card is designed for use with Keithley Series 3700A and 3700 System Switch/Multimeter mainframes. It provides two independent banks of 1x20 two-wire multiplexers, allowing for up to 40 channels of signal switching. The card supports two-wire, four-wire, and dual two-wire configurations, making it suitable for a wide range of measurement applications. When used with the optional 3721-ST screw terminal accessory, the card offers automatic cold junction compensation (CJC) for thermocouple measurements. The 3721 is ideal for applications requiring high channel density and flexible switching capabilities, such as automated test systems and data acquisition.