EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 96)

Setting Up the Instrument in WDM Mode
88 FTB-5240S/5240BP
Setting Up WDM Analysis Parameters
3. To apply the settings from a favorite file to the current analysis setup,
select a file from the favorites list and press Apply Selection. The apply
selection button will be enabled only when a file is selected from the
favorites list. When the Apply Selection button is pressed, the content
of the file will be loaded in the other tabs of this page. To make these
parameters effective for the next acquisition you need to press the OK
button.