EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 252)

Managing Files and Test Configurations
246 FTB-5240S/S-P/BP
Opening Files in Other Test Modes
Opening Files in Other Test Modes
Sometimes, you will need to open a file of a specific test mode while being
in a different test mode. Depending on the type of file and the mode you
selected, your unit will react differently.
Opening Other Test Mode Files in WDM Mode
Your application allows you to open different file types in WDM mode.
While loading a spectral transmittance (.osast) file, the application will
re-analyze the newly imported data using the current WDM analysis setup.
While loading a legacy (.osw /.osm) file, the application will import only
the raw trace data and acquisition conditions (date, acquisition type,
averaging count and wavelength range). All results will be re-analyzed
using the current WDM analysis setup.
While loading an EDFA (.osaedfa) file, the application will re-analyze the
newly imported data using a temporary setup built from the retrieved
channel list, retrieved default channel settings and blanks filled using the
current WDM analysis setup.
While loading a spectral transmittance or EDFA file, the application imports
trace data as follows:

If an Input trace is present in the file, it is imported as the WDM
reference trace.

If an Output trace is present in the file, it is imported as the WDM active
trace.