-85-
10. How to Measure Automatically
Click
to show Function menu, choose “
Measure
”.
Automatic measurement works under this function. Totally twenty kinds of measurements. At most 8
types of measurements could be displayed on the bottom left of the screen. The oscilloscopes provide
20 parameters for auto measurement, including Vpp, Vmax, Vmin, Vtop, Vbase, Vamp, Vavg, Vrms,
Overshoot, Preshoot, Freq, Period, RiseTime, FallTime, Delay
A→B
, Delay
A→B
,
+Width, -Width, +Duty, -Duty.
Show All:
Choose channel from the list on the right side of "Show All", a pop-up window will show all
the measurement values.
10.1. Add measurement
:
Check the channel and measurement type. Measurement results display on the bottom left. You can
add 8 types at most for each channel.
If 8 types are exceeded, the former option will be canceled. The measured values of two channels can
be displayed simultaneously.
10.2. Remove measurement:
Uncheck the measurement type to remove it. Click "Remove All" to remove all measurements.
10.3. The automatic measurement of voltage parameters
The
PeakTech
®
oscilloscopes provide automatic voltage measurements including Vpp, Vmax, Vmin,
Vavg, Vamp, Vrms, Vtop, Vbase, Overshoot and Preshoot. Figure below shows a pulse with some of
the voltage measurement points.
Vpp
Peak-to-Peak Voltage.
Vmax
:
The maximum amplitude. The most positive peak voltage measured over the entire
Waveform
Vmin:
The minimum amplitude. The most negative peak voltage measured over the entire
waveform.
Vamp
Voltage between Vtop and Vbase of a 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.
Overshoot
Defined as (Vmax-Vtop)/Vamp, useful for square and pulse waveforms.
Preshoot
Defined as (Vmin-Vbase)/Vamp, useful for square and pulse waveforms.
Average
The arithmetic mean over the entire waveform.
Vrms
The true Root Mean Square voltage over the entire waveform.
