EXFO OTDR 2 - Manual (Page 153)

OTDR 145
8 Managing Trace Files from the
OTDR Test Application
Once you have acquired traces, or when you want to work with them after
an acquisition, you will need to save, open, rename, and delete trace files.
To rename, copy, move, and delete trace files, you must use the File
Manager utility.
With the OTDR application, you can open trace files and save them in
native (.trc) and Bellcore (.sor) formats. By default, the application saves
the traces in native (.trc) format. For information on how to define the
default file format, see Selecting the Default File Format on page 79).
To save an OTDR trace file in another format:
Use a computer onto which EXFO FastReporter is already installed.