User`s guide

10 Waveform Record RIGOL
DS2000 User’s Guide
10-9
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; 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
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.