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4. CAN bus trigger
CAN (Controller Area Network) is a serial communication protocol of the international ISO standardisation.
When using the CAN bus trigger, you can trigger on Frame Start, Frame Type, Identifier, Data, ID & Data,
Frame End, Missing Acknowledgement or Bit Fill Error.
You must specify the signal source, trigger signal type, sample point and signal rate of the CAN signal.
In CAN bus trigger mode, the trigger setting information is displayed at the bottom right of the screen, e.g.
indicates that the trigger type is CAN, the CH1 trigger level is -126 mV
Menu
Setting
Description
Bus type
CAN
Sets vertical bus types as CAN triggers
Input / Input
Source
CH1
CH2
CH3
CH4
CH1 as trigger source
CH2 as trigger source
CH3 as trigger source
CH4 as trigger source
Type
CAN_H
CAN_L
TX
RX
Actu. CAN_H Bus Signal
Actu. CAN_L Bus Signal
Transm. Signal on CAN signal line
Receive signal on CAN signal line
Sample Point
Turn the M knob (or tap on the touch screen) to set
the sample point, which is a point within a bit time. The
oscilloscope samples the bit level at this point. "Sample
point" is represented by the percentage of "the time from
the beginning of the bit time to the sample point time" in
the "bit time". The bandwidth is 5% to 95%.
Common baud
Turn the M button to select the Baud number from the list
on the left.
Custom Baud
Turn the M knob (or tap on the touch screen) to set
the baud. The range is 10,000 to 1,000,000. Tip: You can
select the closest value in Common Baud and then adjust
it in this menu.
Condition
Start
Trigger on the start frame of the data frame
Type
Type
(Lower
menu)
Data
Sets trigger on selected frame
Remote
Error
Overload
ID
Configure
(Lower
Menu)
Format
Standard or Advanced
ID
M-knob and arrow keys for selection
DATA
Configure
(Lower
Menu)
Byte Length
M-regulator for setting between 1 and
8 bytes
Data
M-knob and arrow keys for selection
ID&Data
Configure
(Lower
Menu)
Format
Standard or Advanced
ID
M-knob and arrow keys for selection
Byte Length
M-regulator for setting between 1 and
8 bytes