Agilent Technologies 4000 X-Series User Manual page 152

8
Display Settings
2 Press Persistence; then, turn the Entry knob to select between:
3 To erase the results of previous acquisitions from the display, press the
4 To return the oscilloscope to the normal display mode, turn off
For another method of seeing worst- case extremes of varying waveforms,
see
152
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.
Clear Persistence softkey.
The oscilloscope will start to accumulate acquisitions again.
persistence; then, press the Clear Persistence softkey.
Turning off persistence does not clear the display. The display is
cleared if you press the Clear Display softkey or if you press the
[AutoScale] key (which also turns off persistence).
"Glitch or Narrow Pulse Capture" on page 221.
Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide