10 CAN/LIN Triggering and Serial Decode
264 InfiniiVision 7000B Series Oscilloscopes User’s Guide
CAN Triggering
To set up the oscilloscope to capture a CAN signal, see “Setup for CAN
Signals” on page 262.
The Controller Area Network (CAN) trigger allows triggering on CAN
version 2.0A and 2.0B signals.
After setting up the oscilloscope to capture a CAN signal, use the Trigger
softkey in the the Trigger Menu to specify the event to trigger on.
If the AMS license is not installed on the oscilloscope, you can still trigger
on the Start of Frame (SOF) bit of a CAN data frame. If the N5424A
CAN/LIN Automotive Triggering and Decode option (license AMS) is
installed on your oscilloscope, the following additional CAN trigger types
will also be available: Remote Frame ID (RTR), Data Frame ID (
~
RTR),
Remote or Data Frame ID, Data Frame ID and Data, Error Frame, All
Errors, Acknowledge Error, and Overload Frame.
A CAN message frame in CAN_L signal type is shown below:
1 Press [Trigger]; then, select the CAN trigger type.
2 Repeatedly press and release the Trigger: softkey or rotate the Entry
knob to select the trigger condition.
• SOF - Start of Frame — The oscilloscope triggers at the start of a frame.
• Remote Frame ID (RTR) — The oscilloscope triggers on remote frames
with the specified ID. Press the Bits softkey to select the ID.
Arbitration
Field
Control
Field
CRC
Field
ACK
Field
Data
Field
Bus
Idle
Inter-
mission
EOF
SOF edge
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