Protocol analysis
R&S
®
RTE
789User Manual 1326.1032.02 ─ 20
Figure 13-82: Custom serial bus trigger settings, here with NRZ Clocked and Pattern selected
Make sure that:
●
In the [PROTOCOL] > "Decode" tab:
– The correct "Protocol" is selected.
– The data sources of the serial bus are channel signals.
●
In the "Trigger" > "Setup" tab:
– The trigger "Sequence" = "A only".
– The trigger "Source" = "Serial bus".
– The correct "Serial bus" is selected.
Type
Defines the trigger type for custom serial bus analysis. The available trigger types are
"Frame Start", "Pattern" and "Advanced".
Remote command:
TRIGger<m>:CMSB:TYPE on page 1748
Frame Start ← Type
For Manchester and NRZ Clocked coding standards, the frame start trigger is set to
the end of the gap time. The start of frame (SOF) condition is the first bit after the gap
(timeout).
For the NRZ Unclocked coding standard, the trigger requires that the signal contains a
start bit. The frame start trigger follows the gap time and is set to the end of the start
bit.
Custom: Manchester / NRZ (option R&S
RTE-K50)M
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