EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 - Manual (Page 428)

Test Functions
416 FTB/IQS-88000 Series
40/100G Advanced - Lanes Mapping & Skew
Laser ON/OFF
Allows to activate the laser control per optical lane or for all lanes.
Optical lane numbers are from 0 to 3 or from 0 to 9 depending on the
selected interface/rate.

All Lanes check box, when selected, applies the change(s) to all
optical lanes at once.

Optical Lane indicates the optical lane numbers and All which
represents the setting for all optical lanes when the All Lanes
check box is selected.

Laser check box, when selected, indicates that the corresponding
optical laser lane is activated and emitting an optical laser signal.
Skew Alarm Threshold (bits)
Allows to set the threshold value that will be used to declare a skew alarm
(see Ex. Skew on page 289).
Default button restores the default alarm threshold value.