Technical data

Advanced Triggering, Search & Navigation, and Segmented Acquisition Labs 3
4000 X-Series Oscilloscopes Advanced Training Guide 49
Your scope should now be triggering on the narrow infrequent glitch that
follows the repetitive burst of six pulses as shown in Figure 27. Note that
if this glitch was more infrequent, you would also need to select the
Normal trigger mode to avoid auto triggering.
Let’s now use the scope’s Segmented Memory mode of acquisition to
capture 500 consecutive occurrences of this burst of pulses to see if we
can determine how often the glitch occurs relative to the occurrence of
each burst. But before beginning a Segmented Memory acquisition, we will
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 Tap the “ < > >< ” softkey; then select the “><” time qualifier.
17 Press the [Acquire] front panel key.
18 Tap the Segmented softkey twice and enter 500 as the number of
segments to capture.
19 Tap the Segmented softkey to begin a Segmented Memory acquisition.
20 Tap the Current Segment softkey; then turn the Entry knob to review all
500 captured segments. Or, tap it a second time to set a specific value.
Figure 27 Triggering on a narrow infrequent glitch using the scope’s Pulse Width
triggering mode.