Keysight 34970A Data Acquisition Switch Unit Mainframe


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The Keysight 34970A consists of a three-slot mainframe with a built-in 6 1/2 digit digital multimeter. Each channel can be configured independently

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$2,461.00 tax excl.

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The Keysight 34970A consists of a three-slot mainframe with a built-in 6 1/2 digit digital multimeter. Each channel can be configured independently to measure one of 11 different functions without the added cost or hassles of signal-conditioning accessories.

Choose from eight optional plug-in modules to create a compact data logger, full-featured data acquisition system or low-cost switching unit. On-module screw-terminal connections eliminate the need for terminal blocks and a unique relay maintenance feature counts every closure on every switch for easy, predictable relay maintenance. Our most popular module 34901A features a built-in thermocouple reference and 20 two-wire channels.


Keysight BenchLink Data Logger software is included with the 34970A. BenchLink Data Logger gives you a familiar Microsoft Windows® interface for test configuration and real-time data display and analysis. Setup and make measurements quickly, export data or use the built-in graphs to log your results.


  • 3-slot mainframe with built-in GPIB and RS232 interfaces
  • 6 1/2-digit (22-bit) internal DMM, scanning up to 250 channels per second
  • 8 switch and control plug-in modules to choose from
  • Built-in signal conditioning measures thermocouples, RTDs and thermistors, ac/dc volts and current; resistance; frequency and period
  • 50k readings of non-volatile memory holds data when power is removed
  • Hi/LO alarm limits on each channel, plus 4 TTL alarm outputs

Built-in signal conditioning to get your job done

Whether you need to measure temperature, ac/dc volts, resistance, frequency, or current, the 34970A/34972A can handle it. The internal autoranging DMM directly measures 11 different functions, eliminating the need for expensive external signal conditioning. And our unique design allows complete per channel configurability for maximum flexibility and quick, easy set up. It’s like having an independent, high-performance DMM behind each channel.

Standard connectivity to the PC

Whether you use GPIB, RS-232, LAN or USB interfaces, the 34970A/34972A family offers easy connection to the PC. The 34970A offers traditional GPIB and RS-232 interfaces. The 34972A has built-in Gigabit LAN and USB 2.0 so you can connect to a modern PC without having to purchase any GPIB cards, cables or converter boxes. With the standard LAN connections you also get the added benefit of a graphical Web interface for easy configuration of measurements and monitoring of results using a standard Web browser.

Convenient data storage with USB flash drive34970A Flash

The 34972A also features a built-in USB memory port so that you can use a USB flash drive to upload BenchLink Data Logger configurations into the 34972A and collect data without being connected to a PC.

Data can be logged directly to the USB flash drive, extending your instrument’s memory, or copied from internal memory for transfer to a computer in another location.



34970A and 34972A Keysight modules-at-a-glance selection guide

A complete selection of plug-in modules gives you high quality measurement, switching, and control capabilities to choose from. Modules include both low-frequency and RF multiplexers, a matrix switch, a general-purpose switch, and a multifunction module that includes digital input/output, analog output, and totalizer capabilities. You can mix and match modules to get just the functionality you need right now—then change or add more channels later as your application grows. Modules for the 34970A/34972A are designed to make your testing easier, faster, and more reliable.

Data Acquisition Modules

34901A     20 Channel Multiplexer (2/4-wire) Module for 34970A/34972A
2-wire armature (4-wire selectable)

34902A     16 Channel Multiplexer (2/4-wire) Module for 34970A/34972A
2-wire reed (4-wire selectable)

34903A     20 Channel Actuator/GP Switch Module for 34970A/34972A
SPDT/form C

34904A     4 x 8 Two-Wire Matrix Module for 34970A/34972A
2-wire armature

34905A     2 GHz Dual 1:4 RF Mux, 50 Ohm Module for 34970A/34972A
Common low (unterminated)

34906A     2 GHz Dual 1:4 RF Mux, 75 Ohm Module for 34970A/34972A
Common low (unterminated)

34907A     Multifunction Module for 34970A/34972A
Two 8-bit digital I/O ports; 26-bit event counter; Two 16-bit analog outputs

34908A     40 Channel Single-Ended Multiplexer Module for 34970A/34972A
1-wire armature (common low)