EXFO FLS-2600B Tunable Laser Source - Manual (Page 27)

Setting Standard Parameters
Tunable Laser Source 19
Selecting a Wavelength
Selecting a Wavelength
There are several ways to select a wavelength for testing.
Entering a Wavelength Directly
To select a wavelength, make sure you are in Wavelength Edition mode.
To select the Wavelength Edition mode, press the
 /  List button on the
front panel, so that  appears on the upper left-hand corner of the display.
To select a specific wavelength, turn the selection dial clockwise or
counterclockwise until you reach the desired wavelength. The module will
then set the wavelength according to your selection.
If the set power cannot be maintained at the selected wavelength
(especially at extreme wavelengths), the displayed power value will flash,
a message appears in the status bar, and the power is no longer in constant
power mode. The output power stability and level will be the natural laser
emission.
To stop the power display from flashing and have the power regulation
work again, set the wavelength at an interval where the displayed power
can be reached, or decrease the power.
Normal
nm

Fine-tune
dBm