EXFO FTB-5600 Distributed PMD Analyzer - Manual (Page 75)

Managing Results
Distributed PMD Analyzer 69
Positioning Markers on the Display
Positioning Markers on the Display
Correctly positioning the cursors is a key element in having the appropriate
results. The fundamental element is to set the first maker just before the
beginning of the transition and the last marker just after the end of the
transition.
Note: When you position the markers for the PMD, you will see that they might
not fit exactly with the automatically detected OTDR events on the trace.
Working with the exact location of the OTDR event markers will take the
network constraint into account, but adjusting the markers manually will
provide you with optimized measurements for your link.
If you use the spatial smoothing filter, you may have to adjust the markers,
as the curve may change.
Marker A Marker B