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• 20 Channel Multiplexer
• Two- and four-wire scanning
• 300 V switching
• 60 ch/s scanning
• Built-in thermocouple reference junction

The Agilent 34901A module for the 34970A Data Acquisition/Switch Unit is the most versatile multiplexer for general purpose scanning. It combines dense, multi-function switching with 60 channel/second scan rates to address a broad spectrum of data acquisition applications.

Two- and four-wire channels can be mixed on the same module. Two additional fused inputs (22 channels total) route up to 1A of current to the internal DMM, allowing ac and dc current measurements without the need for external shunt resistors.

Modules specifications
The Agilent 34970A accuracy specifications already include the switching offset and reference junction errors shown in the chart. These errors are listed separately for determining system error with external measurement devices. These errors are listed separately for determining system error with external measurement devices.

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.