The Keysight DAQ970A Data Acquisition System is a modular instrument platform combining a three-slot mainframe with an integrated 6.5-digit DMM for precision measurement, logging, and automated testing. The onboard 22-bit DMM delivers DC voltage accuracy to 0.003%–0.004%, AC voltage accuracy of 0.05%, and resistance accuracy of 0.004%, with auto-calibration to compensate for time and temperature drift. The system measures 12 distinct signal types—including temperature (thermocouples, RTDs, thermistors), DC/AC volts and current, 2- and 4-wire resistance, frequency, period, capacitance, diode forward voltage, and direct or bridge strain—with internal signal conditioning on every channel.
Technical Specifications
• Mainframe: 3 plug-in module slots
• DMM Resolution: 6.5-digit, 22-bit
• DC Voltage Accuracy: 0.003% to 0.004%
• AC Voltage Accuracy: 0.05% (1-year)
• Resistance Accuracy: 0.004% (1-year)
• Measurement Functions: 12 input signal types
• Scan Rate: Up to 450 channels/s (solid-state multiplexer module)
• Maximum Channels: 120 (1-wire) or 96 matrix cross-points
• Scanning Memory: Up to 1 million readings
• Reading Speed: Up to 5000 readings/s; 50,000 readings/s (firmware-dependent)
– Key Features
• Modular architecture supports multiplexer, switch, RF, digitizer, and multifunction plug-in modules
• Solid-state multiplexer modules reach 450 channels/s and 120 V / 0.02 A
• 4-channel simultaneous-sampling digitizer module: 800 kSa/s, 24-bit resolution
• Dual 1:4 RF multiplexer to 2 GHz, 50 Ω impedance
• Multifunction module offers 16 digital I/O lines, 100 kHz totalizer, and dual ±12 V analog outputs
• Auto-calibration compensates for internal drift
– Typical Applications
• Multi-channel temperature logging (thermocouple, RTD, thermistor)
• Resistance and impedance measurement
• Strain gauge acquisition
• RF switching and signal routing
• Automated test sequences with digital control and synchronization
– Compatibility & Integration
Plug-in modules include 20-channel solid-state and 2/4-wire multiplexers, actuator/relay switches up to 300 V, and specialized RF and digitizer modules for application-specific configurations.
