Keysight N1913 User Manual page 78

2 General Power Meter Functions
Pulse power averages out any aberrations in the pulse such as overshooting or
NOTE
ringing. For this reason, it is called pulse power and not peak power or peak
pulse power.
In order to ensure accurate pulse power readings, the input signal must be
pulsed with a rectangular pulse. Other pulse shapes (such as triangle, chirp, or
Gaussian) will cause erroneous results.
The pulse power on/off ratio must be much greater than the duty cycle ratio.
78 Keysight N1913/1914A User's Guide