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Using the Oscilloscope
The Scope Auto Measure Menu
Automatic measurements display
The large field in the middle row of the menu is called the automatic
measurements display. This display shows the nine automatic
measurements and their values.
See Also "Automatic Measurement Algorithms" on page 191 for an explanation
of each of these fields.

Measurement setup requirements

Measurements typically should be made at the fastest possible sweep
speed in order to obtain the most accurate measurement possible. You
can only make automatic measurements with data that is currently
being displayed in the waveform display area. Keep the following in
mind when making measurements:
•At least one full cycle of the waveform, with at least two like edges, must
be displayed for Period and Freq measurements.
•A complete positive pulse must be displayed to make a +Width
measurement.
•A complete negative pulse must be displayed to make a -Width
measurement.
•The leading (rising) edge of the waveform must be displayed for Risetime,
and rising edge Preshoot and Overshoot measurements.
•The trailing (falling) edge of the waveform must be displayed for Falltime,
and falling edge Preshoot and Overshoot measurements.
•Risetime, Falltime, Preshoot, and Overshoot measuremen ts will be more
accurate if you expand the edge of the wave form by selecting a faster
sweep speed.
•If the signal is clipped, the automatic measurements cannot be made.