Agilent/Keysight U2031A

The Keysight U2031A is a USB power sensor cable engineered for accurate average power measurements across RF and microwave frequencies. It delivers true-average power measurement through a dual-sensor diode pair/attenuator/diode pair topology, with an 80 dB dynamic range and measurement speed up to 250 readings/second. The sensor operates calibration-free with internal zeroing capability, eliminating external reference sources.

USB 2.0 plug-and-play connectivity transforms PCs, signal sources, spectrum analyzers, or network analyzers into integrated power meter systems.

Technical Specifications

• Power Measurement Range: –60 dBm to +20 dBm


• Frequency Range: 9 kHz to 24 GHz


• Dynamic Range: 80 dB


• Maximum Power Handling: +44 dBm


• Measurement Speed: Up to 250 readings/second


• Cable Length: 1.5 meters (U2031A standard)


• USB Connectivity: USB 2.0, Mini-B plug with locking mechanism


• Trigger Interface: BNC male to SMB female, 50 ohm


• Operating Temperature: 0 to +55 °C


• Relative Humidity: 15% to 75% (at 25 °C ± 10 °C)

Key Features

• Internal zeroing eliminates calibration steps


• Built-in triggering for external synchronization


• Simultaneous operation: up to 10 channels in single window; over 20 channels supported for production environments


• Remote monitoring capability via networked USB hub


• Password protection for sensitive data safeguarding


• USBTMC-USB488 compliant protocol

Typical Applications

• RF and microwave power measurement


• Field and laboratory testing


• Production-line power monitoring


• Signal source and analyzer integration

Compatibility & Integration Works with all Keysight U2000 Series USB power sensors. Supported by Keysight BenchVue software and BV0007B Power Meter/Sensor Control and Analysis app. IVI-COM and IVI-C drivers available.