128
4000 X-Series Oscilloscopes Advanced Training Guide
4
Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs
You should now see stable waveform traces on your scope's display similar to
. This frame represents Frame ID 1 on all cycles (this signal only uses two
cycles). Let's now capture a very long stream of FlexRay data and then manually
search through the captured and decoded record.
16
Tap the
Lister
tab on the upper right of the waveform display. This will show a
list of decoded FlexRay data, with timestamps relative to the trigger.
17
Set the scope's timebase to
20.00 µs/div
.
18
Press
[Run/Stop]
to stop repetitive acquisitions.
19
You can now scroll through available data in the list by using the scroll bar to
the right of the list.
As you scroll through the data, tap on a few of the rows. Note that waveforms
"track". This means that the frame that the arrow points to in the lister table
corresponds to the waveforms that are positioned at center-screen. If you want to
zoom in on a particular FlexRay frame, tap
Lister Menu
on the top right of the signal
list, and tap the
Zoom to Selection
softkey. Let's now perform an automatic search
to find every occurrence of a particular Frame ID. We will then automatically
navigate to each of these occurrences.
20
Push the horizontal position/delay knob to re-position the trigger point back to
center-screen.
Figure 86
Triggering on a specific FlexRay frame.
