76
3000 X-Series Oscilloscopes Advanced Training Guide
4
Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs
Zoom to Selection
softkey. Let’s now perform an automatic search to find
every occurrence of a “Missing Acknowledge”. We will then automatically
navigate to each of these occurrences.
26
Push the horizontal position/delay knob to re- position the trigger point
back to center- screen.
27
Set the scope’s timebase to
20.00 ms/div
.
28
Press the
[Search]
front panel key.
29
Press the
Search Edge
softkey; then select
Serial 1 (I
2
C)
using the Entry
knob.
30
Press the
Search for
softkey; then select
Missing Acknowledge
as our
search criteria.
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 25 occurrences of this search operation based on a total
acquisition time of 200 ms. Note that the number of “found” events is
indicated near the bottom of the display. To automatically navigate to each
frame with a “Missing Acknowledge”, press the
and
front panel
navigation keys near the timebase controls.
Figure 53 Automatic Search & Navigation.