326 Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide
25 CAN Triggering and Protocol Decode
• Overload Frame — Triggers on an overload frame.
* You can optionally qualify the trigger for frames whose ID you specify.
If you select a condition that lets you qualify by ID or trigger on ID or data
values, select the Filter by ID check box and use the Define, Extended ID, and CAN
ID controls to specify the ID values.
When CAN symbolic data is loaded into the oscilloscope (see
"Loading and
Displaying CAN Symbolic Data"
on page 323), you can trigger on:
• Message — A symbolic message.
• Message and Signal (non-FD) — A symbolic message and a signal value.
• Message and Signal (FD, first 8 bytes only) — A symbolic message and a signal
value, limited to the first 8 bytes of FD data.
Symbolic messages, signals, and values are defined in the DBC communication
database file.
A message is the symbolic name for a CAN frame ID, a signal is the symbolic
name for a bit or set of bits within the CAN data, and a value can be a symbolic
representation of the signal bit values or it can be a decimal number with units.
Interpreting CAN/CAN FD Decode
The CAN decode display is color coded as follows:
• Blue angled waveforms show an active bus (inside a packet/frame).
To Next Page
Loading...
