EXFO FastReporter 2 - Manual (Page 120)

Working with OTDR Files
110 FastReporter 2
Changing OTDR Settings
Changing OTDR Settings
When viewing your OTDR files, you can change general properties,
pass/fail thresholds for selected wavelengths, event matching tolerances,
and automatic file matching rules for the OTDR projects.
Changing General Settings
General options include items such as the pulse baseline, visual settings,
and event calculation and threshold settings.
To change OTDR general settings:
1. On the Settings menu, select OTDR.
2. Click the General tab.
3. Select if you want the pulse baseline to be based on time or distance.
Note: The pulse baseline distance is always given in meters.