EXFO FastReporter 2 - Manual (Page 123)

Working with OTDR Files
Post Processing Software 113
Changing OTDR Settings
Changing Pass/Fail Thresholds
You can change the pass/fail threshold values for one, or many
wavelengths at a time.
You can also change the threshold values for the current measurement.
To change OTDR Pass/Fail Thresholds:
1. On the Settings menu, select OTDR.
2. Click the Pass/Fail Thresholds tab.