Keysight X Series Measurement Manual page 40

Making MSR Measurements
MSR Downlink Signal Measurement
Troubleshooting Hints
The power statistics CCDF measurement can assist in setting the signal power
specifications for design criteria for systems, amplifiers, and other
components. For example, it can help determine the optimum operating point
to adjust each code timing for appropriate peak or average power ratio, or
both, for the transmitter.
40 Keysight N9083A & W9083A Measurement Guide