Agilent/Keysight U9424B

The Keysight U9424B is a solid-state FET switch configured as a Single Pole, 4 Throw (SP4T) device for RF and microwave test applications. Operating from 300 kHz to 50 GHz, it delivers isolation as high as 100 dB at 9 GHz and maintains 70 dB isolation up to 54 GHz, ensuring signal integrity across demanding frequency ranges. The switch minimizes crosstalk and video leakage (less than 270 mVpp), protecting sensitive components during test sequences. Switching speed in the microsecond range enables efficient automated throughput.

– Technical Specifications

• Configuration: SP4T (Single Pole, 4 Throw)
• Frequency Range: 300 kHz to 50 GHz
• Isolation: 100 dB at 9 GHz; 70 dB up to 54 GHz
• Video Leakage: Less than 270 mVpp (SPDT variants)
• Switching Speed: Microseconds
• Connector Type: 2.4 mm (solder wire configuration)

– Key Features

• Exceptionally high port isolation across broad frequency span
• Minimized crosstalk for complex RF setups
• Low video leakage protection for sensitive test loads
• Dual connectivity: USB control or direct solder integration
• Multiport support for PXIe and USB VNA instruments

– Typical Applications

• RF and microwave component characterization
• Automated test environments requiring fast switching
• Multi-port vector network analyzer setups
• High-isolation signal routing in measurement systems

– Compatibility & Integration

The U9424B integrates with Keysight test platforms via USB 3.1 Type-C connectivity or dedicated interconnect cables for PXIe and USB VNA configurations. Cable options include 4-pin connector to bare wire (85 mm) for solder variants, and 1 m or 2 m USB and multiport interconnect cables. Control is managed through Keysight IO Libraries Suite (version 2020 or later) or the Soft Front Panel software available for the U942x series.