Technical data

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
Figure 81. 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.