Agilent Technologies InfiniiVision 3000 X- Series, Руководство по продвинутой подготовке, Страница: 63 / 128

Advanced Triggering, Search & Navigation, and Segmented Acquisition Labs
3
3000 X-Series Oscilloscopes Advanced Training Guide 63
Your scope should now be triggering on just setup time violation
conditions similar to
Figure 42 . With this unique trigger condition,
perhaps we can now correlate these signals to other signals and/or activity
in our system that may be producing this timing problem.
Let’s now use the scope’s Segmented Memory mode of acquisition to
capture 500 consecutive occurrences of a setup time violation. But to
complete the rest of this lab your scope must be licensed with the
Segmented Memory option.
10 Press the
[Acquire]
front panel key.
11 Press the
Segmented
softkey; then turn the Entry knob to select
500
as
the number of segments to capture.
12
Press the Segmented softkey to begin a Segmented Memory acquisition.
13
Press the Current Segment softkey; then turn the Entry knob to review all
500 captured segments.
14 Set the
Current Segment
to
500
and note the time- tag of the last captured
segment.
Segmented Memory optimizes oscilloscope acquisition memory by only
capturing important segments of a waveform based on the trigger
condition and timebase setting. In this example, we have selectively
captured 500 consecutive occurrences of a setup time violation for a total
acquisition time of approximately 20 ms as shown in
Figure 43 .
Figure 43 Using the scope’s Segmented Memory acquisition to selectively capture 500
consecutive occurrences of a setup time violationrunt pulses.