EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 153)

Setting Up the Instrument in Drift Mode
Optical Spectrum Analyzer 145
Setting Up Drift Analysis Parameters
To add current peaks:
Note: You can add current peaks to the channel list only if an acquisition has
already been performed.
1. From the Main Menu, press Analysis Setup.