Agilent/Keysight 34941A

The Keysight 34941A is a quad 1×4 RF multiplexer module engineered for integration into the 34980A Multifunction Switch/Measure Unit. It delivers bi-directional RF signal routing across four independent multiplexer banks, each capable of switching signals from DC to 3 GHz with 50 Ohm impedance. The module accommodates up to 97 cascaded RF channels within a single mainframe, making it ideal for high-density automated test environments requiring flexible signal distribution without compromise to measurement integrity.

– Technical Specifications

• Frequency Range: DC to 3 GHz
• Impedance: 50 Ohms
• RF Connectors: 20 SMA connectors (1 common and 4 channel ports per bank)
• Switching Capacity per Relay: 30 V maximum, 0.5 A maximum, 10 W maximum
• Channel Isolation: High isolation between independent multiplexer banks
• VSWR: Low, optimized for dynamic range preservation
• Operating Temperature: 0°C to 55°C
• Storage Temperature: -40°C to 70°C
• Humidity: 80% RH non-condensing (≤31°C), decreasing linearly to 50% RH at 55°C

– Key Features

• Four independent 1×4 multiplexer banks in single module
• Galvanic isolation between banks and mainframe chassis to eliminate ground loops
• Cascading architecture supports expansion to 97 RF channels per 34980A unit
• SCPI programming support for automated test sequences
• Low VSWR design preserves connected instrument performance

– Typical Applications

• RF and microwave test automation
• Multi-signal routing in production and characterization environments
• High-channel-density switching for oscilloscopes and spectrum analyzers
• Bi-directional signal distribution in system-level validation

– Compatibility & Integration

The 34941A is a plug-in module for the Keysight 34980A mainframe exclusively. Multiple units cascade within the same host to expand switching capacity.