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U2020 X-Series USB Peak and Average Power Sensor

Data Sheets

Accelerate Your Production Throughput

Accelerate your production throughput with Keysight Technologies, Inc. U2020 X-series USB peak and average power sensors. These sensors provide the high performance and features needed to satisfy the requirements of many power applications in R&D and manufacturing, offering a fast measurement speed of > 25,000 readings/ second to reduce testing time and cut cost of test. The U2020 X-series comes with two models: U2021XA (50 MHz to 18 GHz), and U2022XA (50 MHz to 40/50 GHz). Get the peak power measurement capability of a power meter in a compact, portable form with the Keysight U2020 X-series USB power sensors.

Accurate RMS power measurements

The U2020 X-Series have a wide 30 MHz video bandwidth and a 80 M-sample/s continuous sampling rate for fast, accurate and repeatable RMS power measurements. With its high frequency coverage of 50GHz, wide dynamic range and extensive measurement capability, the X-Series is optimized for aerospace/defense, wireless communication (LTE, WCDMA, GSM) and wireless networking applications (WLAN).

A wide peak power dynamic range

The U2020 X-series sensors’ dynamic range of –30 to +20 dBm for peak power measurements enables more accurate analysis of very small signals, across a broader range of peak power applications in the aerospace, defense and wireless industries.

Internal zero and calibration

Save time and reduce measurement uncertainty with the internal zero and calibration function. Each U2020 X-series sensor comes with technology that integrates a DC reference source and switching circuits into the body of the sensor so you can zero and calibrate the sensor while it is connected to a device under test. This feature removes the need for connection and disconnection from an external calibration source, speeding up testing and reducing connector wear and tear.The internal zero and calibration function is especially important in manufacturing and automated test environments where each second and each connection counts.

Built-in trigger in/trigger out

An external trigger enables accurate triggering of small signals close to the signal noise floor. The U2020 X-series USB power sensors come with built-in trigger in/out connection, allowing you to connect an external trigger signal from a signal source or the device-under-test directly to the USB sensor through a standard BNC to SMB cable. The sensors also come with recorder/video-output features.

Compact and portable form factor

The U2020 X-Series are standalone sensors that operate without the need of a power meter or an external power supply. The sensors draw power from a USB port and do not need additional triggering modules to operate, making them portable and lightweight solutions for field applications such as base station testing. Simply plug the sensor to the USB port of your PC or laptop, and start your power measurements.

The U2020 X-Series is supported by the Keysight BenchVue software and BV0007B Power Meter/Sensor Control and Analysis app. Once you plug the USB power sensor into a PC and run the software you can see measurement results in a wide array of display formats and log data without any programming.For more information,

Fast rise and fall time; wide video bandwidth

Accurately measure the output power and timing parameters of pulses when designing or manufacturing components and subcomponents for radar systems. The U2020 X-series USB power sensors come with a 30 MHz bandwidth and ≤ 13 ns rise and fall time, providing a high performance peak and average power solution that covers most high frequency test applications up to 50 GHz.

Built-in radar and wireless presets

Begin testing faster; the U2020 X-series USB power sensors come with built-in radar and wireless presets for DME, GSM, EDGE, CDMA, WCDMA, WLAN, WiMAX™, and LTE.

Recorder Output and Video Output

The recorder output produces a voltage proportional to the selected power measurement and is updated at the measurement rate. Scaling can be selected with an output range of 0 to 1 V and impedance of 1 kΩ.

The video output is the direct signal output detected by the sensor diode, with no correction applied. The video output provides a DC voltage proportional to the measured input power. The DC voltage can be displayed on an oscilloscope for time measurement. The video output impedance is 50 Ω and the level is approximately 500 mV at 20 dBm CW. The trigger out and recorder/video out share the same port, and the level is approximately 250 mV at 20 dBm.

Characteristic Peak Flatness

The peak flatness is the flatness of a peak-to-average ratio measurement for various tone separations for an equal magnitude two- tone RF input. The figure below refers to the relative error in peak-to-average ratio measurements as the tone separation is varied. The measurements were performed at –10 dBm.

For average only mode with aperture size of ≥ 12 ms and averaging set to 1, the measurement noise is calculated as follows:

  • Measurement noise = 120/√(aperture size in ms) nW
  • For average only mode with aperture size of < 12 ms and averaging set to 1, the measurement noise is equal to 50 nW
  • For example, if the aperture size is 50 ms and averaging set to 1, Measurement noise = 120/√(50) nW = 17 n


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