EXFO FastReporter 2 - Manual (Page 125)

Working with OTDR Files
Post Processing Software 115
Changing OTDR Settings
If you have selected more than one wavelength, all of them will be
modified at the same time.
Select whether you want to include the span start and end values
in your threshold calculations.
Note: When the span start and span end values are included, the corresponding
events are included in the ORL calculation. The span start and end loss
values, and the span ORL values are updated when the span start and
span end inclusion settings are modified. The maximum splice loss is also
impacted by the fact that the span start and end values are included or not.
Note: When span start and span end values are excluded, pass/fail thresholds
are no longer applied to the corresponding span start or span end events.
4. To apply the changes without closing the dialog box, click Apply. To
apply the changes and close the window, click OK.