HP 54616B User And Service Manual page 51

Operating Your Oscilloscope
To make voltage measurements automatically
Press the softkey.
Vrms
3
The oscilloscope automatically measures the rms voltage and displays the
result on the display.
The oscilloscope makes automatic measurements on the first pulse or period
in the display. If a cycle of the waveform cannot be found as shown in the
delayed window in figure 2-10, the measurement is made using the delayed
window as the cycle. Figure 2-10 shows how to use delayed sweep to isolate
a pulse for an rms measurement.
Figure 2-10
Delayed sweep isolates an area of interest for an rms voltage measurement
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