15-8
IM DLM3054-01EN
List Display (List)
The list displays the following items.
No.
Analysis number. Negative numbers are assigned to frames before the and positive numbers are
assigned to frames after the trigger position.* The instrument can display the analysis results for
up to 100000 frames in the range of −99999 to 99999. Pressing the RESET key highlights frame
number zero.
Time(ms)
Displays the time from the trigger position* to the start of the frame in milliseconds.
Frame
Displays the frame type. The instrument can analyze the following four frame types: data frame
(Data), remote frame (Remote), error frame (Error), and overload frame (Over load).
ID
Displays the 11-bit standard format ID value or the 29-bit extended format ID value in
hexadecimal notation. If decode (Decode) is set to Symbol, the ID is displayed with the message
name.
DLC
Displays the number of significant digits in hexadecimal notation.
Data
Displays the data in hexadecimal notation when the frame type is data frame. If decode (Decode)
is set to Symbol, Data is displayed with physical values.
CRC
Displays the sequence in hexadecimal notation. This is displayed when the frame type is data
frame or remote frame.
Ack
Displays “Y” when an ACK bit is detected and “N” otherwise.
Information Displays the following error information. If multiple errors are detected in one piece of data, the
instrument displays a single error in the following order of precedence.
Stuff Error, CRC Error
* If
is set to OFF, they are based on the trigger point.
Search Setup (Search)
Search Type (Mode)
Select the CAN bus signal search type from one of the settings below.
• SOF: Searches for the start-of-frame position
• Error: Searches for errors
• ID/Data: Searches for the position where the AND condition of the ID bit pattern and Data pattern is met
If you set the type to Error or ID/Data, set the search conditions.
The method to set search conditions is the same as that for the trigger conditions of the CAN bus trigger.
Executing a Search (Search)
The instrument searches for locations where the specified search conditions are met. Then, the instrument
displays the frame corresponding to the specified detected point number (Pattern No) expanded in the zoom
window.
Detected Points
The detected points are the same as the trigger points.
Jumping to the Specified Field (Field Jump)
You can move the zoom position to the start of the following fields in the frame corresponding to the specified
detected point number.
SOF, ID, Control Field, Data Field, CRC, ACK
15 Analyzing and Searching Serial Bus Signals