EXFO FTB-7000 OTDR for FTB-200 v2 - Manual (Page 270)

Analyzing Traces with the Bidirectional Analysis Application
256 FTB-7000 Series
Modifying Trace Analysis Settings
To revert to default settings:
1. From the main window, select the Trace Info. tab.
2. Under Direction, select either A->B or B->A.
3. Press the Trace Analysis Settings button.
4. Press the Revert to Default Settings button.
5. When the application prompts you, select Yes to complete the
operation.
6. Press Apply to confirm the changes.
7. The application may prompt you to confirm whether you want to apply
the changes to both unidirectional traces. Select the option that better
suits your needs.
8. Press OK to return to the Trace Info. tab.