Agilent Technologies InfiniiVision 3000 X- Series Advanced Training Manual page 75

Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs
21
Figure 52 Triggering on I
You should now see stable waveform traces on your scope's display similar
to
which is the frame that the scope is triggering on, should be decoded as:
< 29RA FFA 80~A > or < 29RA FFA C0~A >
This particular frame should be interpreted as a Read (R) operation from
address 29 with an acknowledge (A), followed by a data byte equal to FF
with an acknowledge (A), following by a data byte equal to either 80 or C0
without an acknowledge (~A). Let's now capture a very long stream of I
data and then manually search through the captured and decoded record.
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23
24
25
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
3000 X-Series Oscilloscopes Advanced Training Guide
Set the scope's timebase to 200.0 µs/div.
2
C traffic.
2
Figure 52. The I C frame that is near the center of the scope's display,
Set the scope's timebase to 20.00 ms/div.
Press the [Serial] front panel key; then press the Lister softkey.
Press [Run/Stop] to stop repetitive acquisitions.
Press the Scroll Lister softkey; then turn the Entry knob to manually
scroll through the lister table.
2
C frame, either push the Entry knob, or press the
4
2
C
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