Glossary
Glossary- 12
CSA7000B Series & TDS7000B Series Instruments User Manual
Persistence
The amount of time a data point remains displayed. There are three
persistence modes available in the instrument Variable, Infinite, and Off.
Phase
A timing measurement between two w aveforms of the amount one leads or
lags the other in time. Phase is expressed in degrees, where 360_ comprise
one complete cycle of one of the waveforms. Waveforms measured should be
of the same frequency or one waveform should be a harmonic of the other.
Pixel
A visible point on the display. The instrument display is 640 pixels wide by
480 pixels high.
Positive duty cycle
A timing measurement of the ratio of the positive pulse width to the signal
period, expressed as a percentage.
Positive overshoot
Amplitude (voltage) measurement.
PositiveOvershoot =
Max − High
Amplitude
× 100%
Positive width
A timing measurement of the distance (time) between two amplitude
points — rising-edge MidRef (default 50%) and falling-edge MidRef (default
50%) — on a positive pulse.
Posttrigger
The specified portion of the waveform record that contains data acquired
after the trigger event.
Pretrigger
The specified portion of the waveform record that contains data acquired
before the trigger event.
Principal Power Switch
The master power switch located on the rear panel of the instrument.
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