Rohde & Schwarz RTE - CAN and CAN FD Configuration; CAN and CAN FD Configuration Settings; The CAN Protocol

Protocol analysis
R&S
®
RTE
561User Manual 1326.1032.02 ─ 20
More than 20 years after the invention of CAN, communication needs have increased,
and CAN has reached it's bandwidth limits in some application fields. Therefore, Bosch
specified an improved CAN protocol with flexible data rate - CAN FD. It introduces a
higher bit rate in the data phase up to 15 Mbit/s and an extended data field from up to
64 bytes.
The R&S RTE provides decoding, triggering and searching CAN and CAN FD signals
with following options:
●
CAN: option R&S RTE-K3
●
CAN FD: option R&S RTE-K9, requires CAN option R&S RTE-K3
13.5.1 The CAN protocol
CAN frame format and in CAN FD frame format can coexist within the same network.
CAN FD shares the physical layer, with the CAN protocol as defined in the BOSCH
CAN Specification 2.0. The frame format is different. There are two new control bits in
the CAN FD frame, the first enabling the new frame format with different data length
coding and the second optionally switching to a faster bit rate after the arbitration is
decided. New CRC polynomials are introduced to secure the longer CAN FD frames.
13.5.2 CAN and CAN FD configuration
13.5.2.1 CAN and CAN FD configuration settings
Access: [PROTOCOL] key > "Decode" tab > "Protocol" = "CAN" or "CAN/CAN-FD"
Make sure that the tab of the correct serial bus is selected.
CAN and CAN FD (option R&S RTE-K3/K9)