EXFO OTDR 2 - Manual (Page 149)

Analyzing Traces and Events
OTDR 141
Enabling or Disabling the Detection of Reflective Ends of Fiber
To enable or disable the detection of reflective ends of fiber:
1. From the Main Menu, tap Test Configuration.
2. From the Apply to list, select Current acquisition.
3. From the Test Configuration dialog box, go to the Link Definition tab.
4. If you want to enable the option, under End-of-Fiber, select the
Reflective end-of-fiber detection box.
OR
If you prefer to disable the option, clear the box.
5. Tap OK to return to the main window.
I
MPORTANT
The analysis will stop as soon as the loss of an event crosses the
end-of-fiber (EoF) threshold. The application will mark the event as
an end-of-fiber event.
In this case, even if you selected the option, the application will not
search the “noisy” portion of the trace for reflective ends of fiber.
If you want to do so, you will have to increase the EoF threshold
(see Setting the Analysis Detection Thresholds on page 30).