Agilent Technologies 2000 X, Руководство пользователя

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Display Settings
7
Agilent InfiniiVision 2000 X-Series Oscilloscopes User's Guide 103
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 presistence) 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.