The Keysight DAQM901A is a 20-channel solid-state multiplexer module for integration into DAQ970A and DAQ973A data acquisition mainframes. It delivers flexible multi-function switching with scan rates up to 80 channels/second, supporting mixed 2-wire and 4-wire measurement configurations on the same module. The DAQM901A includes two dedicated, fused current measurement channels rated to 1 A for direct AC and DC current measurements without external shunt resistors, plus a built-in thermocouple reference junction for temperature acquisition.
Technical Specifications
• Channel Configuration: 20-channel multiplexer (2/4-wire) plus 2 dedicated current measurement channels (22 channels total)
• Switching Voltage: Up to 300 V
• Scan Rate: Up to 80 channels/second
• Current Measurement Channels: Two fused inputs, up to 1 A (AC/DC)
• Input Connections: Screw terminals
– Key Features
• Supports AC/DC voltage, AC/DC current, 2-wire and 4-wire resistance, and thermocouple temperature measurements
• Mixed measurement modes on a single module eliminate need for multiple cards
• Dedicated current channels eliminate external shunt resistor requirements
• Integrated reference junction simplifies thermocouple compensation
• Compact form factor as plug-in module for DAQ970A and DAQ973A mainframes
– Typical Applications
• Multi-channel environmental and process monitoring
• Production test and characterization across voltage, current, and temperature domains
• General-purpose data logging requiring high-density switching
• Mixed measurement systems requiring both resistive and thermocouple sensing
– Compatibility & Integration
The DAQM901A is a plug-in module designed exclusively for Keysight DAQ970A and DAQ973A data acquisition systems. It requires a compatible mainframe to operate.
