2-30
IM 701450-51E
Executing the Analysis (Analyze Exec)
Analysis is performed on up to 16000 frames before and after the trigger target frame. If
the trigger point is between frames, the frame immediately after the trigger point
becomes the triggering frame. Analysis is not performed if there is no Start of Frame on
the screen. In addition, if an error is detected in a frame, the analysis on the frame ends
at that point, and the next frame is analyzed.
Analysis Data List (Analysis Result List)
The following four items are displayed.
• Analysis Number (No.)
Alphabetic characters showing the frame type are displayed with the frame number.
[Screen display example] R0, D1, E-2
Frame type: R (Remote Frame), D (Data Frame), and E (Error Frame)
Frame no.:
With the trigger target frame set to 0, the frame is numbered No. -1, No.
-2, and so on before the target frame and No. 1, No. 2, and so on after the target
frame. Displayed in the range between –16000 and 16000.
• ID
The Identifier value (in standard format (11 bits) or extended format (29 bits)) is
displayed in hexadecimal.
• Dt
The Data field value is displayed in Hex (hexadecimal). Eight bits are displayed in 1
frame.
• ACK
The Acknowledge value is displayed as Y. (If Acknowledge is returned Y is displayed,
and if Acknowledge is not returned, nothing is displayed.)
If indefinite data is present within the frame, an asterisk (*) is displayed.
Selecting the Frame (List)
Frame number 0 is automatically highlighted immediately after executing the analysis in
the analysis results list. The waveform of the highlighted frame is displayed in the zoom
box. Turn the jog shuttle to highlight an arbitrary frame.
Display Position of the Head of the Frame (Position)
The display position of the head of the selected frame moves horizontally. The Position
is selectable only when firmware version is 2.40 or later.
Selectable range: 0 to 50% (The left edge and the center of the waveform display area
are 0% and 50%, respectively.)
Note
•
Even if standard format and extended format are mixed in the analysis results list display,
it is automatically detected.
•
For items that were not analyzed due to an error detection within the frame, blank is
displayed.
2.5 Analyzing/Searching Data