EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 251)

Managing Files and Test Configurations
OSA 245
Managing Measurement Files
To clear a file:
1. From the Main Menu, Press File.
2. Press New.
3. If you had already acquired (but not saved) a trace, a warning window
appears, asking you if you want to save the current trace. Press Yes to
save the trace. Once the trace is saved, you can make room for a new
trace. Press No to create a new trace without saving the previously
acquired one. Press Cancel to return to the previous window.
Note: In WDM mode, any reference trace will be cleared at this point.