User manual

Protocol Analysis
R&S
®
RTO
288User Manual 1316.0827.02 ─ 06
To specify the bit timing, enter either "Time seg1" and "Time seg2", or directly the "Sample
point". Additionally, set the "Jump width".
"Time seg1,
Time seg2"
Set the number of time quanta before the sample point (Time seg1) and
after the sample point (Time seg2). The "Sample point" percentage
value is adjusted accordingly.
Time seg1 comprises the segments Synch_seg, Prop_seg, and
Phase_seg1 which are specified in the CAN standard. Time seg2
matches Phase_seg2 from the standard.
The maximum sum of Time seg1 and Time seg2 is 25.
"Sample point"
Sets the position of the sample point within the bit in percent ot the
nominal bit time.
The time quanta values "Time seg1, Time seg2" are adjusted accord-
ingly.
"Jump width"
Time segment1 may be lengthened or time segment2 may be short-
ened due to resynchronization. Resynchronization corrects the phase
error of an edge caused by the drift of the oscillators. The jump width
defines the maximum number of time quanta for phase correction. The
maximum value of the jump width is 4, or Time seg1 - Time seg2 if this
difference is lower than 4.
SCPI command:
BUS<m>:CAN:T1Segment on page 687
BUS<m>:CAN:T2Segment on page 687
BUS<m>:CAN:SAMPlepoint on page 686
BUS<m>:CAN:JWIDth on page 687
10.5.1.2 CAN Trigger
The "Events" tab of the "Trigger" dialog box provides the trigger settings for the configured
serial buses.
CAN (Option R&S RTO-K3)