EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 250)

Managing Files and Test Configurations
244 FTB-5240S/S-P/BP
Managing Measurement Files
3. Scroll through the list and select a trace to open.
4. Select the trace type the file will be loaded into:

In WDM mode, two choices are available: Active Trace and
Reference Trace.

In Spectral Transmittance and EDFA modes, when opening an OSA
WDM file, two choices are available: Input Trace and Output Trace.
Note: This option is not available in Drift, DFB and FP modes.
If you are in WDM, Drift, EDFA or ST modes, you can select whether
you want to also import the trace configuration and overwrite the
current analysis setup and acquisition context at the same time that
you open the file. The file type must be the same for the configuration
importation to be valid. If you have selected to open a reference trace,
the importation is done automatically.
Note: If you open an active trace and a reference trace is already present, the
current analysis setup will be applied to the active trace. If you open a
reference trace its analysis setup will replace the current analysis setup.
5. Press Open to open the file. The trace appears in the Graph tab. All the
values in the main window will also be updated from the file.