EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 173)

Analyzing Traces and Events
OTDR 159
Changing the Loss and Reflectance of Events
To change the loss and reflectance of an event:
1. Select the event for which you want to modify the loss or reflectance.
2. Press Change.
A magnifying glass icon and four markers (a, A, B, and b) appear in the
trace display.
You can reposition all markers directly by dragging them, or by pressing
where you want to relocate them on the graph. Selecting marker A or B
will move the a-A or B-b pair.
Note: The current marker locations are set, during the analysis, to calculate and
display the original event loss and reflectance.
Magnifying
glass icon
Marker a
Marker A Marker B
Marker b