User Manual

131
Interpreting CAN Decode
 Data bytes appear in hex digits in white.
 A CRC (cyclic redundancy check) appears in hex digits in blue when valid or in red to indicate
that the oscilloscope's hardware decode calculated a CRC that is different from the incoming
data stream's stated CRC.
 Angled waveforms show an active bus (inside a packet/frame).
 Mid-level blue lines show an idle bus.
 Decoded text is truncated at the end of the associated frame when there is insufficient space
within frame boundaries.
 Pink vertical bars indicate you need to expand the horizontal scale (and run again) to see
decode.
 Red dots in the decode line indicate that there is data that is not being displayed. Scroll or
expand the horizontal scale to view the information.
 Aliased bus values (under-sampled or indeterminate) are drawn in pink.
Interpreting CAN Lister Data
In addition to the standard Time column, the CAN Lister contains these columns:
 NO: frame number from left to right.
 Type: R indicates remote frame and D indicates data frame.
 ID: frame ID.
 Length: Data length code.
 Data: Data for CAN decode.
 CRC: Cyclic redundancy check.
 Ack: Indicates the signal has Ack.
Figure 121 -CAN Decode