Description

KEYSIGHT – 34921A 

– 40-Channel Armature Multiplexer Module for 34980A 

The Keysight 34921A module for the 34980A Multifunction Switch/Measure Unit is the most versatile multiplexer for general purpose scanning. It has low thermal offset characteristics and a built-in thermocouple reference on the terminal block, making it ideal for temperature measurements directly to the internal DMM. The dense, multi-function switching with 100 channel/second scan rates addresses a broad spectrum of data acquisition applications. Four additional fused inputs (44 channels total) route up to 1 A of current to the internal DMM, allowing AC and DC current measurements without the need for external shunt resistors. Standard 50-pin Dsub connectors allow for use with standard cables, terminal blocks, or mass interconnect solutions.

Key Features:
– 40 2-wire channels
– 300V, 1A switch; 2A carry current
– 100 ch/s scanning Mix 2- or 4-wire configurations
– Built-in thermocouple reference junction
– 4 current channels
– Latching armature relays, with relay counter

Why Choose the 34921A?

The 34921A is built to deliver unmatched reliability and accuracy in the most demanding environments. Designed for engineers who prioritize performance, this unit ensures stable results for R&D, quality assurance, and industrial maintenance. Contact us today for personalized technical support and bulk inquiries.