EXFO FTB-2200 for FTB-200 v2 - Manual (Page 20)

Setting Up and Operating the Broadband Source
16 FTB-2200
Activating or Deactivating Light Emission
Activating or Deactivating Light Emission
Before activating the source, read the Safety Information on page 3.
Note: You should let the source warm up for 30 minutes to obtain optimum
wavelength stability.
To activate or deactivate light emission:

Select ON to activate the light emission. The ACTIVE LED on the
module’s front panel lights up, indicating that the source is active. The
data display lights up and two red arrows appear beside the status
indicator on the data display, indicating that the source is on.

Select OFF to deactivate the light emission. The ACTIVE LED on the
module’s front panel turns off, indicating that the source is off. The
status indicator on the data display is dimmed and the two red arrows
disappear from the data display.