EXFO FTB -5240S/5240BP Optical Spectrum Analyzer for FTB 500 (NS-1434) - Manual (Page 170)

Setting Up the Instrument in Drift Mode
162 FTB-5240S/5240BP
Setting Up Acquisition Parameters
The wavelength range covered within these bands of the spectra are listed
below.
³
O band (original): 1259 to 1361 nm
³
E band (extended): 1359 to 1461 nm
³
S band (short wavelengths): 1459 to 1531 nm
³
C band (conventional “erbium window”): 1529 to 1566 nm
³
L band (long wavelengths): 1564 to 1626 nm
³
U band (ultralong wavelengths): 1624 to 1650 nm.
To set parameters in the Drift Settings tab:
1. From the main window, select the Drift Settings tab.
2. Select a delay unit and enter a delay count required to establish a delay
before taking the first acquisition in a drift measurement. The
application shall wait for this time before taking the first acquisition of a
drift measurement.