Agilent/HP 34902A 16 Channel Multiplexer

Agilent/HP 34902A 16 Channel Multiplexer
Manufacturer: Agilent / HP
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Agilent/HP 34902A 16 Channel Multiplexer (2/4-wire) Module for 34970A


Agilent/HP 34902A 16 Channel Multiplexer (2/4-wire) Module for 34970A

Rent me for $50 a month

The Agilent 34902A module for the 34970A Data Acquisition/Switch Unit employs reed relays to achieve scan rates up to 250 channels-per-second. Use this module for high-throughput automated test applications as well as high-speed data logging and monitoring tasks. Sixteen two-wire inputs switch up to 300 V. Two-and four-wire channels may be mixed on the same module. User provided shunt resistors are required for current measurements.


  • 16 Channel Multiplexer
  • 250 Channels per second scanning rate
  • Two- and four-wire scanning
  • Built-in thermocouple reference junction

   Use this module for high-speed scanning and high-throughput automated test applications. Each of the 16 channels switches both HI and LO inputs, thus providing fully isolated inputs to the internal multimeter. The module is divided into two banks of eight two-wire channels each. When making four-wire resistance measurements, channels from Bank A are automatically paired with channels from Bank B. You can close multiple channels on this module only if you have not configured any channels to be part of the scan list. Otherwise, all channels on the module are break-before-make.

Multiplexer Selection Guide

   Choose between the broad functionality of the 34901A, the high speed scanning of the 34902A, or the single-ended density of the 34908A. These three modules are the only way to connect to the 34970A internal DMM. They can be used to scan with external instruments as well. All multiplexer modules employ break-beforemake scanning, ensuring only one closed channel (or channel pair) at a time. Multiple channel closures are allowed on the 34901A and 34902A modules when not configured for scanning. The 34908A does not allow multiple channel closures at any time.

   Up to three modules, in any combination, can be inserted into a single mainframe. The 34970A's internal DMM connections are accessible only through the 34901A, 34902A, and 34908A low frequency multiplexers. On-module screw terminals accept wire sizes from 16 gage to 22 gage. Twenty-gage wire is recommended for high channel count applications. The 34905A and 34906A RF Multiplexers use SMB connectors. A standard set of (10) BNC-to-SMB adapter cables is provided with each RF module for convenient BNC connections.