EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 167)

Setting Up the Instrument in DFB Mode
OSA 161
Setting Up Acquisition Parameters
To set parameters in the Acquisition tab:
1. From the main window, select the Acquisition tab.
2. Select the acquisition type.
3. If you are performing an averaging-type acquisition, enter the number
of scans the unit will perform.
Note: You cannot modify the number of scans count value if you are performing a
single or real-time acquisition.