EXFO FastReporter 2 - Manual (Page 272)

Working with iOLM files
262 FastReporter 2
Managing Bidirectional iOLM Files
Working with Virtual Bidirectional Files
Virtual bidirectional files are a way to preview the resulting measurement
when you select two matching unidirectional measurements without going
through the process of fully creating the bidirectional file. The display in the
link view, Threshold, Elements and Results tables are the same as they
would if you are viewing an actual bidirectional measurement. The order
of display for the elements depend of the A -> B measurement. Since this
is a viewing option only, you cannot perform operations such as adding or
removing elements when the virtual bidirectional mode is active.
Note: You cannot create bidirectional files with multimode measurements.
To activate the virtual bidirectional file mode:
From the View menu, select iOLM, then Display Virtual Bidir.