U2020 X-Series USB Peak and Average Power Sensors

Instructions for PC, U2021XA, andMXG Connectivity

Procedures

1. Connect the Laptop (installed with the N1918A Power Analysis Manager, Power Analyzer) to the U2021XA USB power sensors via the USB Mini-B cable.
2. Connect the U2021XA USB power sensors to the RF Output of the N5182A MXG signal generator shown in Figure 1.
3. Connect the BNC-SMB cable from the N5182A MXG signal generator’s rear panel Event 1 to the Trig In socket on the U2021XA USB power sensor.
4. Launch the Keysight Connection Expert application (Keysight IO Libraries Suite) and verify the connection of the U2021XA USB power sensors.

Keysight N1918A Power Analysis Manager

The Keysight Technologies, Inc. N1918A Power Analysis Manager, Power Analyzer is a Windows-based free license application software for the U2020XA Series USB Peak and Average power sensors. This application software enables you to perform advanced power analysis measurements in real time.

Average Power Measurement in Compact Mode Display

In this guide, keystrokes surrounded by [ ] represent front panel keys of the instruments, keystrokes surrounded by { } represent softkeys of the instrument, and keystrokes in bold represent the softkeys of the software.

Time-Gated CCDF and Waveform CCDF Measurements

Complementary Cumulative Distribution Function (CCDF)

A CCDF curve is defined by how much time the waveform spends at or above a given power level. This is expressed in dB relative to the average power. A CCDF curve is a plot of relative power levels versus probability where the X-axis represents the dB above the average signal power, while the Y-axis represents the percent of time the signal spends at or above the power level specified by the X-axis.

Waveform CCDF

Conventional peak power meter/sensors provide a built-in function of waveform CCDF measurement in graphical and table format. Waveform CCDF calculates CCDF and peak-to-average ratio using the entire waveform, including portions where the data is zero (no signal).

Time-Gated CCDF

Time-gated CCDF or Burst CCDF calculates the entire waveform using only the actual signal instead of the whole waveform. Gated function of the U2020XA Series USB power sensor allows the user to allocate the gated (marker 1 and 2) on specific burst on duration where the signal is computed as a time-gated CCDF measurement.