EXFO FTB-700 for FTB-1 - Manual (Page 241)

Analyzing Traces with the Bidirectional Analysis Application (Optional)
OTDR 233
Deleting Events
Deleting Events
Note: You can only delete events from the A->B or B->A trace (not from the
bidirectional measurement). The application regenerates the bidirectional
measurement automatically to take into account the modifications you
have made.
Almost any element can be deleted from the events table, except:

end of analysis

fiber section

launch level

end of fiber

span start

span end
I
MPORTANT
The only way to “recover” deleted items is to reanalyze the trace.
For more information, see Reanalyzing Traces and Regenerating the
Bidirectional Measurement on page 213.