The Keysight DAQ970A/DAQ973A is a data acquisition system built around a compact 3-slot mainframe with a built-in 6½-digit (22-bit) internal DMM. The measurement engine from a high-performance benchtop DMM is embedded inside the mainframe, combining proven measurement performance, universal inputs with built-in signal conditioning, and modular flexibility in a single low-cost package. It delivers 0.003% basic DC voltage accuracy, ultra-low reading noise, and scan rates of up to 450 channels per second, giving an engineer both the speed and the accuracy needed for demanding acquisition work.

Configured with a 20-channel relay multiplexer, the system becomes a powerful, low-cost data logger for characterization applications, and it also serves as a data acquisition front end for automated test. Typical data-logging and monitoring uses include environmental chamber monitoring, component inspection, benchtop testing, process troubleshooting, and temperature profiling. It supports both the R&D engineer characterizing a new design and the manufacturing engineer building a test system or troubleshooting a process. The 40-channel single-ended multiplexer adds density for applications such as battery test and component characterization.

ValueTronics stocks the instruments it sells from its own 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned unit is inspected and functionally verified in-house by our technicians before it ships, while new units ship factory-sealed exactly as received from the manufacturer. That combination of real inventory on the shelf and hands-on verification of used equipment is the difference between buying from a stocking specialist and gambling on an unaccountable listing.

Brand Heritage

Keysight Technologies traces its roots to the test and measurement business of Hewlett-Packard. That business was spun out as Agilent Technologies in 1999, and in 2014 Agilent's electronic measurement division became the independent company Keysight Technologies. Equipment from across that history is frequently encountered under all three names.

Compare Other Models in This Series

The DAQ970A/DAQ973A family pairs a common 6½-digit (22-bit) measurement engine with a 3-slot modular mainframe, giving the simple operation and low per-channel cost of a data logger alongside the flexibility and performance of a modular data acquisition system. Both mainframes share the same internal DMM, the same 4.3-inch color display, and the same compatibility with all nine plug-in switch, RF, and control modules.

The two models differ in their standard remote-control interfaces. The DAQ970A provides built-in Gigabit LAN and USB 2.0, while the DAQ973A carries the same LAN and USB connectivity plus a built-in GPIB interface for ATE environments that depend on IEEE-488 control.

Each model in the DAQ970A/DAQ973A family below links to its own dedicated product page, where pre-owned pricing and availability are matched to that exact configuration. Choose the mainframe and module combination that fits your channel count and connectivity requirements.

The defining difference across the family is connectivity: the DAQ970A ships with built-in LAN and USB, and the DAQ973A adds a built-in GPIB interface to that same LAN and USB set. Both mainframes accept up to three of the nine available plug-in modules in any combination and deliver identical measurement performance, channel density, and 1-million-reading memory.

Beyond connectivity, configuration differences come from module choice rather than the mainframe—multiplexer type, scan speed, voltage and current ratings, and switching topology all vary by module. The comparison table below summarizes the interface and configuration differences across the family.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Product Core & Specifications

Important: The internal DMM input section is optically isolated and shielded from the earth-referenced circuitry and computer interface, providing up to 300 V of input isolation.

Important: The DAQ970A/DAQ973A mainframe requires at least one low-frequency multiplexer module to make measurements: only the DAQM900A, DAQM901A, DAQM902A, and DAQM908A modules connect to the internal DMM. Modules are ordered separately ('buy only what you need—and add more modules later as your application grows').

Important: Up to three modules, in any combination, can be inserted into a single mainframe.

Important: The DAQM905A RF Multiplexer uses SMB connectors; a standard set of (10) BNC-to-SMB adapter cables is provided with each RF module for BNC connections (2 GHz bandwidth via SMB, 1 GHz via the BNC-to-SMB adapters).

Important: On-module screw terminals accept wire sizes from 16-gage to 22-gage; twenty-gage wire is recommended for high channel count applications.

Recommended pairing: listed accessories include the 34307A J-type thermocouples and 34308A 10 kΩ thermistors for temperature measurements and the 11062A Kelvin clip set for resistance measurements.

About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

• Warranty included
• Functional verification included
• Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
• Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.