Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs
4
3000 X-Series Oscilloscopes Advanced Training Guide
109
34
Press the
Search Edge
softkey; then select
Serial 1 (I
2
S)
.
35
Press the
Audio Left
softkey and change to
Audio Right
.
36
Press the
Search for
softkey; then select
> (Greater than)
.
37
Press the
Data
softkey; then turn the Entry knob to select
10
.
The white triangles near the top of the waveform area mark the time
location of each “found” occurrence of our search operation as shown in
. These frames are also marked in orange in the first/pointer
column of the lister table. Your scope should have found and marked
approximately 20 occurrences of this search operation based on a total
acquisition time of 100 ms. Note that the number of “found” events is
indicated near the bottom of the display. To automatically navigate to
right- channel data byte > +10, press the
and
front panel navigation
keys.
Let’s now use the scope’s Segmented Memory mode of acquisition to
capture 100 consecutive occurrences of I
2
S serial bus traffic when
right- channel > +10. But to complete the rest of this lab your scope must
be licensed with the Segmented Memory option.
38
Push the horizontal position/delay knob to re- position the trigger point
back to center- screen.
39
Set the scope’s timebase to
200.0 µs/div
.
40
Press the
[Run/Stop]
front panel to begin repetitive acquisition again.
Figure 82 Automatic Search & Navigation on I
2
S data.