HP 54750A, User Manual, Page: 205 / 478

W aveform Measurements
Standard Waveform Denitions
V amp V amp = Vtop 0 Vbase or Ptop 0 Pbase
The base value may be equal to the min value and the top value may be
equal to the max value for many waveforms , such as triangle waveforms .
Figure 7-9 shows where these waveform denitions occur .
Figure 7-9. Waveform denitions used to make voltage measurements.
Several of the voltage measurements require threshold and edge information
before they can be made .
V avg cycle V avg cycle = average voltage of the rst cycle of the signal
V avg V avg = average voltage of all data on the display
dc Vrms
dc Vrms =
q
(v
2
(t ))
n
ac Vrms ac Vrms =
p
(v (t) 0 V av g )(v (td ) 0 V av g )=n
7-15