EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 203)

Setting Up the Instrument in Spectral Transmittance Mode
OSA 197
Setting Up Acquisition Parameters
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.
4. Press Input or Output to specify which position to use to store the next
acquisition.
5. Select the wavelength range for your acquisition.
You can select the wavelength range by entering the start and stop values
or by selecting a range on the double slider.
To select the wavelength range using the double slider, move the left and
right handles on the double slider or simply click on any band.
Note: You can select more than one adjoining ranges to include in your range, for
example, S + C.