Owon TAO3000 Series User Manual page 54

To decode CAN signal:
(1) Connect the CAN signal to the Signal Input Channel of the oscilloscope.
(2) Adjust to the proper time base and voltage division.
(3) In trigger menu, select Bus trigger, and select bus type as CAN, set
parameters based on the characteristics of the signal, trigger the signal
correctly and obtain stable display. Refer to "CAN Trigger" on page 42.
(4) Click to call up the menu panel. Click the Decode softkey on panel to
switch to the ON state. Select bus type as CAN. set parameters based on
the characteristics of the signal. When the parameters are set correctly,
the information carried by the signal will be displayed.
Tip: If there are repetitive menu items in both trigger menu and decoding menu,
you can set anyone of them, the other will be changed synchronously.
Decoded information interpretation:
Information
Identifier
Overload Frame
Error Frame
Data Length code
Data
Cyclic Redundancy Check
Note:
 Use the upper knob to adjust the thresholds of bus trigger and bus
decoding.
 When the ACK (ACKnowledge Character) of Data Frame or Remote
Frame is not met, two red error marks will be displayed in the
corresponding position in the waveform.
 Error Frame, Remote Frame, and Overload Frame will be identified in the
"Data" column in the event table (Data Frame will not be identified).
CAN Decoding menu list:
Menu Setting
Bus
CAN
Type
Display Format
4.Advanced User Guidebook
Abbreviation
I, ID, or do not display
OF
EF
L, DLC, or do not display
D, Data, or do not display
C, CRC, or do not display
Instruction
Set bus type of decoding as CAN.
Binary
Decimal
Set the display format of the bus.
Hex
ASCII
48
Background
Green
Green
Green
Blue
Black
Valid: Purple
Error: Red