EXFO FastReporter 2 - Manual (Page 265)

Working with iOLM files
Post Processing Software 255
Viewing Power Meter Results
Viewing Power Meter Results
Power meter results are displayed in the OPM and PPM table. For more
details, see Viewing Power Meter Results on page 197.
Managing Bidirectional iOLM Files
FastReporter 2 allows you to view and create bidirectional iOLM files.
Selecting each unidirectional file or the resulting bidirectional file displays
the corresponding data in the Results window.
Creating a Bidirectional iOLM File
The application allows you to create a bidirectional iOLM file from two
matched iOLM measurements of opposite directions. You can create more
than one file at once, providing that each have their matching file.
The measurement files must meet the following criteria:

The measurement lengths in both direction are the same.

There are no splitters in the link elements.
Note: You cannot create bidirectional files with multimode measurements.