Keysight 4000 X-Series, Руководство по продвинутой подготовке

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Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs
4
4000 X-Series Oscilloscopes Advanced Training Guide 91
data, tap the Zoom to Selection softkey. Let’s now perform an automatic search to
find every occurrence of MOSI data = 03
HEX
. We will then automatically navigate
to each of these occurrences.
35
Push the horizontal position/delay knob to re-position the trigger point back to
center-screen.
36
Set the scope’s timebase to 20.00 ms/div .
37
Press the
[Search]
front panel key.
38
Tap the Search Edge softkey; then select Serial 1 (SPI) .
39
Tap the Bits softkey.
40
Tap the Select Digit softkey; then select the upper nibble (Digit 0).
41
Tap the Hex softkey; then turn the Entry knob to select 0 .
42
Tap the Select Digit softkey; then turn the Entry knob to select lower nibble (Digit
1).
43
Tap the Hex softkey; then turn the Entry knob to select 3 .
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 Figure 58 . These
frames are also marked in orange in the first/pointer column of the lister table.
Figure 58 Automatic Search & Navigation on SPI traffic.