Data Sheet

RIGOL 11 Waveform Record
MSO4000/DS4000 User’s Guide
11-8
3. Start
Press Satrt to enable waveform analysis. Note that during the analysis process,
the progress bar is displayed and the parameters can not be modified. After the
analysis finishes, the analysis results of “Error Frames”, “Current Error” and
“CurFrame Diff” are displayed. 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 trace-based analysis, the oscilloscope compares each frame with the
template and computes the difference between each sampled point and the
template values. “CurFrame Diff” (relative difference) is the normalized value of
the difference between the current frame and template.
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
whose difference value is equal to or larger than the threshold selected as an
error frame and the corresponding “CurFrame Diff” is 100%. Otherwise, the
frame is juged as correct and the “CurFrame Diff” is 0%. Note that there are
only two “CurFrame Diff” values (100% and 0%) under the analysis based on
pass/fail mask.
4. Cancel
During the analysis, users can press Cancel to stop the analysis and press Start
again to restart the analysis.