User manual

Protocol Analysis
R&S
®
RTO
310User Manual 1316.0827.02 ─ 06
Bit rate
Selects the number of transmitted bits per second from a list.
SCPI command:
BUS<m>:FLXRay:BITRate on page 721
Channel
Selects the FlexRay channel on which the signal is measured, either cahnnel A or channel
B. The setting is considered in the calculation of the frame CRC.
SCPI command:
BUS<m>:FLXRay:CHTYpe on page 721
Separate header bits
The setting affects the decoding and its display. If enabled, the leading five indicator bits
of the header are decoded as five single bits. Otherwise, the indicator bits are shown as
one word with word length five bits.
SCPI command:
BUS<m>:FLXRay:SEHB on page 721
10.7.1.2 FlexRay Trigger
The "Events" tab of the "Trigger" dialog box provides the trigger settings for the configured
serial buses.
Make sure that:
●
the trigger sequence is set to "A only"
●
the trigger source is "Serial bus", and the data source(s) of the bus are channel signals
●
the correct serial bus is selected
●
the correct protocol is selected
Trigger type
Selects the trigger type for FlexRay analysis.
"Start of frame"
Triggers on the first rising edge after the transmission start sequence
(TSS).
"Identifier
+data"
Triggers on the decoded frame content, on header and payload data:
● Indicator bits, see "Indicator bits" on page 311
● Frame identifier, see "Frame ID (min/max)" on page 311
● Payload length, see "Payload length (min/max)" on page 312
● Cycle count, see "Cycle count (min, max), Step" on page 312
● Data position, see "Position, Index (min, max) - Data
setup" on page 313
● Data bit pattern, see "Condition, Data (min, max) - Data
setup" on page 313
"Symbol"
Triggers on a symbol or wakeup pattern, see "Symbol" on page 313.
FlexRay (Option R&S RTO-K4)