EXFO FTB -5240S/5240BP Optical Spectrum Analyzer - Manual (Page 139)

Setting Up the Instrument in Drift Mode
OSA 133
Setting Up Acquisition Parameters
2. Select the acquisition type.
3. If you are performing an averaging type acquisition, enter the number
of scans the unit will perform.
If you are performing an InBand type acquisition, either enter the
number of scans or select a predefined number of scans the unit will
perform.
Note: You cannot modify the number of scans count value if you are performing a
single acquisition.
4. 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.