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Introduction
The commands/queries in the Measure Subsystem are used to make
automatic parametric measurements on displayed waveforms.
Measurements are made on the displayed waveform(s) specified by
the SOURce command. If the source is not specified, the last
waveform source specified is assumed. Measurements are made in
the following manner:
Frequency
The frequency of the first complete cycle displayed is measured using the
50% level.
Period
The period of the first complete cycle displayed is measured at the 50% level.
Peak-to-Peak
The absolute minimum and the maximum voltages for the selected source are
measured.
Positive Pulse Width
Pulse width is measured at the 50% level of the first displayed positive pulse.
Negative Pulse Width
Pulse width is measured at the 50% level of the first displayed negative pulse.
Risetime
The risetime of the first displayed rising edge is measured. To obtain the
best possible measurement accuracy, select the fastest sweep speed while
keeping the rising edge on the display. The risetime is determined by
measuring time at the 10% and the 90%voltage points of the rising edge.
Falltime
Falltime is measured between the 10% and 90% points of the first displayed
falling edge. To obtain the best possible measurement accuracy, select the
fastest sweep speed possible while keeping the falling edge on the display.
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