
108
3000 X-Series Oscilloscopes Advanced Training Guide
4
Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs
Using the default trigger value of arming on right- channel value
≤
- 10 and
then trigger on right- channel value
≥
+10, your scope should now be
triggering on “R: +20” with this byte shown at center- screen similar to
. Let’s now capture a longer stream of I
2
S traffic and then
manually search through the captured and decoded record.
26
Press the
[Serial]
front panel key.
27
Press the
Lister
softkey; then turn the Entry knob to select
Serial 1 (I
2
S)
.
28
Set the scope’s timebase to
10.00 ms/div
.
29
Press
[Run/Stop]
to stop repetitive acquisitions.
30
Press the
Scroll Lister
softkey; then turn the Entry knob to manually
scroll through the lister table.
As you scroll through the data, 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 I
2
S frame of data, either push the Entry knob, or press
the
Zoom to Selection
softkey. Let’s now perform an automatic search to find
every occurrence of Right- channel > +10. We will then automatically
navigate to each of these occurrences.
31
Push the horizontal position/delay knob to re- position the trigger point
back to center- screen.
32
Set the scope’s timebase to
10.00 ms/div
.
33
Press the
[Search]
front panel key.
Figure 81 Triggering on I
2
S right-channel = +20.