EXFO FastReporter 2 - Manual (Page 167)

Working with OTDR Files
Post Processing Software 157
Setting the IOR Value by Distance
Setting the IOR Value by Distance
The application allows you to modify the IOR value for each selected
measurement by modifying the distance from span start to span end.
To modify the IOR value:
1. On the Measurements tab select the measurements you want to
modify.
2. On the Measurement menu, click on OTDR and select Set IOR by
Distance.
3. Enter the distance of span start to span end.
Note: When the distance values from the selected measurements are not the
same, the values are displayed with a semicolon. Once the new IOR values
are calculated, the values related to the position and distance and the
OTDR graph are updated.
4. Click OK to save the changes or Cancel to discard them.