The Keysight DAQM908A is a 40-channel single-ended multiplexer module that routes one-wire inputs to the internal DMM of DAQ970A and DAQ973A mainframes. Built for high-density switching in common-low applications, it enables rapid channel scanning and floating-low operation essential for battery testing and component characterization. Two-wire measurements are supported for all measurement types except current.
Technical Specifications
• Channels: 40 one-wire inputs
• Switching Architecture: Single-wire switching with floating low connection
• Scan Rate: Up to 100 channels/second
• Maximum Switching Voltage: 300 V
• Current Rating: 1 A
• Low Connection Isolation: Floats up to 300 V from earth ground
• Measurement Capability: Two-wire support for all types except current; 2-wire RTD and Thermistor temperature sensors only
• Weight: Approximately 0.5 kg
– Key Features
• Isolated, floating low connection rated to 300 V enables common-low measurement configurations
• High scan throughput supports large-scale multiplexing tasks
• Two-wire measurement flexibility across voltage, resistance, and temperature domains
• Direct integration with DAQ97x series instrumentation
– Typical Applications
• Battery testing and characterization
• Component parameter verification
• Multi-channel benchtop measurements
• High-density switching environments
– Compatibility & Integration
The DAQM908A operates exclusively with Keysight DAQ970A and DAQ973A Data Acquisition/Switch Unit mainframes. It is not compatible with legacy 34970A and 34972A models. Each module ships with one functional test certificate.
