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5.Advanced User Guidebook
71
Figure 5-69
Mean: The arithmetic mean over the entire waveform.
PK-PK: Peak-to-Peak Voltage.
RMS: The true Root Mean Square voltage over the entire waveform.
Max: The maximum amplitude. The most positive peak voltage measured over the
entire waveform.
Min: The minimum amplitude. The most negative peak voltage measured over the
entire waveform.
Vtop: Voltage of the waveform's flat top, useful for square/pulse waveforms.
Vbase: Voltage of the waveform's flat base, useful for square/pulse waveforms.
Vamp: Voltage between Vtop and Vbase of a waveform.
OverShoot: Defined as (Vmax-Vtop)/Vamp, useful for square and pulse waveforms.
PreShoot: Defined as (Vmin-Vbase)/Vamp, useful for square and pulse waveforms.
Cycle RMS: The true Root Mean Square voltage over the first entire period of the
waveform.
Cursor RMS: The true Root Mean Square voltage over the range of two cursors.
The automatic measurement of time parameters
The oscilloscopes provide time parameters auto-measurements include Period,
Frequency, Rise Time, Fall Time, +D width, -D width, +Duty, -Duty, Delay A→B ,
Delay A→B , and Duty cycle.
Figure 5-70 shows a pulse with some of the time measurement points.
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