The Keysight U8481A is a USB-powered thermocouple power sensor delivering precise RF power measurements from DC to 18 GHz. Built for demanding test environments, this instrument measures power levels from −20 dBm to +20 dBm and integrates directly with Keysight USB power meter solutions for streamlined system integration. The sensor combines wide dynamic range capability with high measurement speed, making it suitable for validation and characterization across wireless communications, radar, and electronic warfare platforms.
Technical Specifications
Frequency Range
• DC to 18 GHz
Measurement Type
• Thermocouple power sensor
Power Measurement Range
• −20 dBm to +20 dBm (typical)
Dynamic Range
• Wide dynamic range across specified power levels
Measurement Speed
• High-speed operation for efficient data throughput
Triggering
• Internal triggering
Calibration
• External calibration factors supported
– Key Features
• USB interface powered and controlled
• Direct USB data transfer
• Compatible with Keysight USB power meter software ecosystem
• Thermocouple sensing technology for stable, wideband measurements
– Typical Applications
• Wireless communication system testing
• Radar system calibration and validation
• Electronic warfare equipment characterization
• General RF power measurement tasks
– Compatibility & Integration
The U8481A integrates with Keysight USB power meter solutions and third-party applications supporting USB power sensor control. Specific operating system compatibility depends on installed software; refer to software documentation for supported platforms.
