Advanced Triggering, Search & Navigation, and Segmented Acquisition Labs
3
3000 X-Series Oscilloscopes Advanced Training Guide
47
change the trigger condition to trigger on the 300 ns wide pulse again so
that we can capture every occurrence of the burst. To complete the rest of
this lab your scope must be licensed with the Segmented Memory option.
16
Press the “
< > ><
” softkey; then select the “
><
” time qualifier.
17
Press the
[Acquire]
front panel key.
18
Press the
Segmented
softkey; then turn the Entry knob to select
500
as
the number of segments to capture.
19
Press the
Segmented
softkey to begin a Segmented Memory acquisition.
20
Press the
Current Segment
softkey; then turn the Entry knob to review all
500 captured segments.
21
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 this burst for a total acquisition
time of than 40 ms as shown in
valuable acquisition memory capturing signal idle time between each burst.
But the scope does provide us with timing information about the time of
each segment relative to the first captured segment. As you were reviewing
each captured segment, you should have determined that the glitch occurs
every 40th occurrence of the burst.
Figure 28 Using the scope’s Segmented Memory acquisition to selectively capture 500
consecutive occurrences of a burst of pulses.