Table of Contents
Advertisement
4
Serial Bus Decoding & Triggering, Search & Navigation, and Segmented Acquisition Labs
37
38
39
40
41
42
Figure 47 Triggering on Parity Errors.
We now have the scope triggering exclusively on parity errors (note that
"31" is displayed in red) as shown in
Segmented Memory acquisition to capture 25 consecutive occurrences of
parity errors. We will then review the captured errors to determine how
often they occur. But to complete the rest of this lab your scope must be
licensed with the Segmented Memory option.
43
44
45
46
72
Press the [Run/Stop] front panel to begin repetitive acquisitions again.
Press the [Trigger] front panel key; then press the Trigger Setup softkey.
Press the Trigger Tx Data softkey; then select Rx or Tx Parity Error.
Press the [Mode/Coupling] front panel key near the trigger level knob.
Press the Mode Auto softkey; then select Normal.
Set the horizontal position/delay to approximately -4.7 ms.
Press the [Acquire] front panel key.
Press the Segmented softkey; then turn the Entry knob to select 25 as
the number of segments to capture.
Press the Segmented softkey to begin a Segmented Memory acquisition
(be patient... these errors occur very infrequently).
When the scope finishes capturing 25 segments, press the Current
Segment softkey; then turn the Entry knob to review all 25 captured
segments and note the time between each event.
Figure
47. Let's now use the scope's
2000 X-Series Oscilloscopes Advanced Training Guide
Advertisement
Table of Contents
