User manual

Chapter 11 Waveform Record RIGOL
MSO2000A/DS2000A User’s Guide 11-9
3. Start
Before performing the analysis, please set the templet by referring to “Analysis
Based on Trace” or create the mask by referring to “Analysis Based on
Pass/Fail Mask
” according to the analysis mode currently selected. Then,
press Start to enable waveform analysis.
Note: During the analysis process, the progress bar is displayed and the
parameters cannot be modified.
After the analysis finishes, the analysis results of “Error Frames”, “Current Error”
and “CurFrame Diff” are displayed; at the same time, the first error frame is
located as shown in the figure below. At this point, the next error frame, the
previous error frame as well as every frame in this waveform analysis can be
located using the corresponding softkeys.
Error Frames:
The total number of error frames discovered in this analysis. The number of
error frames is related to the error frame threshold currently set.
Current Error:
The order number of the error frame lately located in all the error frames when
locating every data frame in this analysis.
CurFrame Diff:
During the analysis based on trace, the oscilloscope compares each frame with
the templet to compute the difference value and normalizes each value using
the maximum one; then, compares the normalized value of each frame with the
threshold selected to judge whether the frame is an error frame. “CurFrame
Diff” (relative difference) is the normalized value of the difference between the
current frame and templet.
During the analysis based on pass/fail mask, the oscilloscope compares each
frame with the mask to compute the difference value and recognizes the frame