The Agilent/Keysight L4491A is a 4U LXI Class C RF/microwave switch platform engineered for automated test environments. It delivers control and monitoring of RF and microwave switches and attenuators across wireless communications, avionics, medical electronics, and general test and measurement applications. The modular chassis supports up to 48 SPDT switches, 16 multiport switches, or combinations thereof, with optional front panel accommodation for 8 additional multiport switches.
Technical Specifications
• Frequency range: DC to 50 GHz (dependent on installed modules)
• Standard coil drives: 64
• Optional coil drive expansion: 128 (Option 002)
• Chassis form factor: 4U
• Switch configuration: SPDT and multiport architectures
– Key Features
• Modular mounting system supporting vertical orientation of switches and attenuators via dedicated trays and optional bracket kits
• Distribution boards (Y1150A–Y1155A series) supply power and control signals via standard ribbon cables
• LAN, GPIB, and USB connectivity with LXI compliance
• Web-based graphical interface for setup and diagnostics
• Switch verification, sequence execution, and relay counters
• Low insertion loss and high isolation for signal integrity
• 3D models provided for RF cable layout documentation
– Software and Integration
• SCPI language support
• Driver compatibility: Keysight VEE PRO, National Instruments LabVIEW, Lab-Windows/CVI, TestStand, Microsoft C/C++, and Visual Basic
• Software compatibility with L4445A and 34945A microwave switch drivers
– Typical Applications
• Wireless communications testing
• Avionics systems validation
• Medical electronics characterization
• RF/microwave component switching matrices
– Compatibility & Integration
The platform is optimized for Keysight RF and microwave switches and attenuators. Distribution boards are ordered separately based on application requirements.
