EXFO FTB-7000 OTDR for FTB-200 v2 - Manual (Page 173)

Analyzing Traces and Events
OTDR 159
Opening Trace Files
Opening Trace Files
In Advanced mode, you can open a trace file as the main trace or the
reference trace.
You can open both the main and reference trace files at the same time. You
can open two multiple wavelength trace files simultaneously, each
containing several traces.
In Automatic mode, you can open a trace file for viewing only.
Consequently, you cannot select a trace as main or reference trace.
Note: You cannot open bidirectional trace files in the OTDR test application. Use
the OTDR Bidirectional application instead (see Analyzing Traces with the
Bidirectional Analysis Application on page 193).
When you open trace files, the application always displays the first
wavelength of the file.