Keysight (Agilent) DAQ973A Data Acquisition System

The Keysight DAQ973A is a modular data acquisition system built around a 3-slot mainframe that scales from single-channel monitoring to 120-channel systems. At its core sits a 6.5-digit (22-bit) integrated DMM delivering 0.003% DC voltage accuracy and auto-calibration to eliminate drift over time and temperature. The system captures up to 450 channels/second across a wide range of inputs—DC/AC voltage (100 mV to 300 V), current (1 µA to 2 A DC, 100 µA to 1 A AC), resistance to 1000 MΩ, frequency (3 Hz to 300 kHz), temperature (-200 to +1800 °C), capacitance, and strain measurements. A 4.3-inch color touchscreen provides real-time numerical and graphical data display including trend and histogram views. The DAQ973A connects via LAN (LXI compatible), USB, or GPIB, with remote web-based control and standalone logging via USB flash drive. Plug-in modules range from 20-channel multiplexers (DAQM900A at 450 ch/sec) to matrix switches and digitizers, making the system adaptable for production testing, environmental monitoring, materials characterization, and precision signal measurement across industries.

– Technical Specifications

• Integrated DMM: 6.5-digit resolution (22 bits)
• DC Voltage Accuracy: 0.003% (1-year)
• AC Voltage Accuracy: 0.05% (1-year)
• Resistance Accuracy: 0.004% (1-year)
• Voltage Range: 100 mV to 300 V
• Current Range: 1 µA to 2 A DC; 100 µA to 1 A AC
• Resistance Measurement: 2- and 4-wire; up to 1000 MΩ
• Temperature Range: -200 to +1800 °C
• Frequency Range: 3 Hz to 300 kHz
• Mainframe Slots: 3
• Maximum Channels: 120
• Scan Rate: Up to 450 channels/second
• Sampling Rate: Up to 800 kSa/sec
• Measurement Speed: Up to 5000 readings/second
• Scanning Memory: Up to 1 million points
• Display: 4.3-inch color TFT touchscreen
• Auto-Calibration: Compensates for internal DMM drifts

– Key Features

• Modular 3-slot architecture accepts multiplexer, switch, and digitizer modules
• Direct strain and bridge strain measurement capability
• Capacitance and diode test functions
• Period measurement
• LAN (LXI) and GPIB remote control with web interface
• USB connectivity (front and rear) for data transfer and control
• External trigger input and alarm output
• Standalone operation with USB flash drive storage

– Typical Applications

• Automated production test and characterization
• Environmental and thermal monitoring
• Materials and component validation
• Bridge and strain gauge measurement
• Precision signal acquisition and logging

– Compatibility & Integration

Plug-in modules include the DAQM900A (20-channel multiplexer, 450 ch/sec, 120 V / 0.02 A), DAQM901A (20-channel, 2/4-wire, 80 ch/sec, 300 V / 1 A), DAQM902A (16-channel, 250 ch/sec, 300 V / 50 mA), DAQM903A (20-channel relay, 120 ch/sec, 300 V / 1 A), DAQM904A (4×8 matrix switch, 120 ch/sec, 300 V / 1 A), and simultaneous sampling digitizers.