CAN Triggering and Serial Decode
25
Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide
277
•
Differential (H-L)
— The CAN differential bus signals connected to an analog
source channel using a differential probe. Connect the probe's positive lead
to the dominant-high CAN signal (CAN_H) and connect the negative lead to
the dominant-low CAN signal (CAN_L).
Dominant low signals:
•
Rx
— The Receive signal from the CAN bus transceiver.
•
Tx
— The Transmit signal from the CAN bus transceiver.
•
CAN_L
— The actual CAN_L differential bus signal.
•
Differential (L-H)
— The CAN differential bus signals connected to an analog
source channel using a differential probe. Connect the probe's positive lead
to the dominant-low CAN signal (CAN_L) and connect the negative lead to
the dominant-high CAN signal (CAN_H).
CAN Triggering
To set up the oscilloscope to capture a CAN signal, see
The Controller Area Network (CAN) trigger allows triggering on CAN version 2.0A
and 2.0B signals.
A CAN message frame in CAN_L signal type is shown below:
After setting up the oscilloscope to capture a CAN signal:
1
Press
[Trigger]
.
2
In the Trigger menu, press the
Trigger Type
softkey.
Arbitration
Field
Bus
Idle
Data
Field
SOF edge
Control
Field
ACK
Field
Intermission
CRC
Field
EOF
