The Keysight 34901A module for the 34970A/34972A data acquisition/switching units is a feature-rich multiplexer for general-purpose scanning applications. It combines the advantages of high-density, multi-function switching with a scan rate of up to 60 channels/second to meet the needs of a wide range of data acquisition applications.
A mix of 2-wire and 4-wire channels are available in the same module. Two additional fused inputs (22 channels in total) feed currents up to 1 A to the built-in digital multimeter for AC and DC current measurements without the use of external shunt resistors.