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34901A CAL

Data Acquisition Unit, Calibration, 20 Channels, 300 V, 1 A, 10 MHz

34901A CAL - Data Acquisition Unit, Calibration, 20 Channels, 300 V, 1 A, 10 MHz

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Manufacturer Part No:
34901A CAL
Newark Part No.:
Technical Datasheet:
34901A CAL   Datasheet
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Technical Docs (1)

Product Overview

The 34901A CAL from Keysight Technologies is a 20 channel armature multiplexer (2/4-wire) module for 34970A/34972A data acquisition/switch units. It is a most versatile multiplexer for general purpose scanning. It combines dense, multifunction 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 need for external shunt resistors. The 34970A/34972A’s internal DMM connections are accessible only through the 34901A low frequency multiplexer. This multiplexer modules employ break-before-make scanning, ensuring only one closed channel (or channel pair) at a time. Multiple channel closures are allowed on the 34901A modules when not configured for scanning.
  • Calibrated multiplexer module
  • 20ch multiplexer + 2 current channels, 60ch/sec speed
  • 2-wire armature (4-wire selectable)
  • 300V maximum voltage, 1A maximum current, 10MHz bandwidth
  • Built-in thermocouple reference junction
  • Less than 3µV thermal offset, 50W power rating
  • Less than 1ohm initial closed channel, greater than 10Gohm isolation (ch to ch, ch to earth)
  • 120/s open/closed speed
  • Operating temperature range from 0°C to 55°C


34901A multiplexer module, Certificate of calibration.

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