Automatic measurement is a function in modern digital oscilloscopes which allows measuring different types of values automatically: in amplitude and time domains.
There are the following values: Vpp, Vmax, Vmin, Vtop, Vbase, Vamp, Mean, Crms, Overshoot, Preshoot, Frequency, Period, Rise Time, Fall Time, Delay A→B, Delay A→B¯, +D Width (+Wid), -D Widh (-Wid), +Duty, -Duty etc.
Signal parameters for automatic measurements are shown in the pictures below:
automatic measurement in the amplitude domain
automatic measurement in the time domain.
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