Agilent Technologies 1670G Series User Manual page 192

Using the Oscilloscope
The Scope Auto Measure Menu
Measurement algorithms
Frequency (Freq). The frequency of the first complete cycle
displayed is measured using the 50% levels.
If the first edge on the display is rising, then
Freq =
t rising edge 2 - t rising edge 1
If the first edge on the display is falling, then
Freq =
t falling edge 2 - t falling edge 1
Period. The period is measured at the 50% voltage level of the
waveform.
If the first edge on the display is rising, then
Period = t rising edge 2 - t rising edge 1
If the first edge on the display is falling, then
Period = t falling edge 2 - t falling edge 1
Peak-to-Peak Voltage (Vp_p). The maximum and minimum voltages
for the selected source are measured:
Vp_p = V maximum - V minimum
where Vmaximum and Vminimum are the maximum and minimum
voltages present on the selected source.
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