Keysight DSOX3012T, Руководство пользователя

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Display Settings
9
Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide 157
To set or clear persistence
With persistence, the oscilloscope updates the display with new acquisitions, but
does not immediately erase the results of previous acquisitions. All previous
acquisitions are displayed with reduced intensity. New acquisitions are shown in
their normal color with normal intensity.
Waveform persistence is kept only for the current display area; you cannot pan
and zoom the persistence display.
To use persistence:
1 Press the [Display] key.
2 Press Persistence ; then, turn the Entry knob to select between:
• Off — turns off persistence.
When persistence is off, you can press the Capture Waveforms softkey to
perform a single-shot infinite persistence. A single acquisition's data is
displayed with reduced intensity, and it remains on the display until you
clear persistence or clear the display.
•
∞
Persistence — (infinite persistence) Results of previous acquisitions are
never erased.
Use infinite persistence to measure noise and jitter, to see the worst-case
extremes of varying waveforms, to look for timing violations, or to capture
events that occur infrequently.
• Variable Persistence — Results of previous acquisitions are erased after a
certain amount of time.
Variable persistence gives you a view of acquired data that is similar to
analog oscilloscopes.
When variable persistence is selected, press the Time softkey and use the
Entry knob to specify the amount of time that previous acquisitions are to be
displayed.
The display will begin accumulating multiple acquisitions.