Keysight 34921A Armature Multiplexer Module, with Low Thermal Offset for 34980A

The Keysight 34921A Armature Multiplexer Module is a versatile 40-channel switching solution designed for use with the Keysight 34980A Multifunction Switch/Measure Unit. It can be configured as 40 single-ended or 20 differential channels, providing flexible routing for a wide range of measurement applications. Featuring durable armature relays, the 34921A ensures low thermal offset, high accuracy, and dependable long-term performance. Its broad signal compatibility supports voltage, current, resistance, and temperature measurements, making it a practical choice for engineers, researchers, and production test environments.

Key Features:

• 40 single-ended or 20 differential channels

• Armature relay design with low thermal EMF

• Supports switching up to 300 V and 1 A carry current

• Wide signal compatibility, including voltage, current, resistance, and temperature

• Compact, high-density design for efficient use of test rack space

• Seamless integration with Keysight 34980A mainframes

Compatible Measurements/Chemicals:
Supports AC/DC voltage, resistance, current, frequency, and temperature measurements with thermocouples, RTDs, and thermistors.

Included Accessories:
Supplied with screw terminal block and user documentation.

Compliance:
Meets ISO, CE, and Keysight quality standards; fully suitable for GLP-compliant laboratory use.

Benefits for Lab Users:
The Keysight 34921A helps laboratories and engineers streamline data acquisition by offering accurate, low-thermal-offset signal routing in a compact format. Its reliability, flexibility, and ease of integration make it ideal for high-precision test systems in R&D, calibration, and automated production testing.