Agilent / Keysight 34941A Quad 1×4 50 Ohm 3 GHz Multiplexer Module for 34980A

The Keysight 34941A is a quad 1×4 RF multiplexer module engineered for high-frequency signal routing within the 34980A Multifunction Switch/Measure Unit mainframe. It delivers four independent multiplexer banks, each capable of switching signals from DC to 3 GHz with 50 Ohm characteristic impedance. Each bank uses latching Form C relays to ensure only one channel closes at any given time, with the remaining channels automatically open. The module features 0.6 dB typical insertion loss and isolation better than 58 dB, making it suitable for precision RF measurements and multi-channel test configurations. SMA connectors provide RF connectivity; recommended torque is 0.8–1.1 Nm. Multiple 34941A modules cascade within a single 34980A mainframe to create larger multiplexer configurations up to 1×97 RF channels. Programmable control via SCPI command language with IVI-COM, IVI-C, and LabVIEW driver support. The module integrates with the 34980A’s graphical web interface for remote operation.

– Technical Specifications

• Frequency Range: DC to 3 GHz
• Characteristic Impedance: 50 Ohm
• Insertion Loss: 0.6 dB (typical)
• Isolation: Better than 58 dB
• VSWR: Low VSWR
• Configuration: Four independent 1×4 multiplexer banks
• Relay Type: Latching switches, Form C relays
• Maximum Voltage: 30 V
• Maximum Current: 0.5 A
• Maximum Power: 10 W
• Connectors: SMA with 0.8–1.1 Nm recommended torque

– Key Features

• Single-bank closure with automatic channel isolation
• Cascadable module design for scalable RF switching
• High channel isolation for measurement integrity
• Form C relay switching for reliable operation

– Typical Applications

• Multi-channel RF signal routing
• High-frequency test and measurement systems
• Automated RF signal switching up to 3 GHz

– Compatibility & Integration

• Compatible with Keysight 34980A Multifunction Switch/Measure Unit mainframe
• Supports SCPI programming, IVI-COM, IVI-C, and LabVIEW drivers
• Remote control via 34980A graphical web interface
• Designed for Category II installation environments with low condensation