Als (Auto Laser Shutdown) Configuration - KTI Networks KGS-1064-HP User Manual

2.23 ALS (Auto Laser Shutdown) Configuration

ALS function is supported for the SFP transceiver and used to automatically shut down the output power of the
transmitter in case of fiber break. ALS is provisioned on both ends of the fiber pair. "Auto" mode is set to turn
on transmitter automatically if the broken fiber is believed to have been repaired.
The method is to turn on transmitter at the near end for a test pulse period every interval time. This pulse
causes LOS cleared at the far end if the cable has been repaired. The transmitter is turned on at the far end. At
the same time LOS cleared is also detected at the near end. Transmitters of both ends are turned on and LOS
alarm is cleared.
LOS set for 500ms up is confirmed as an optical loss and indicates a possible cable break. The laser transmitter
is turned off immediately. The transmitter is restarted if LOS is cleared for 100ms up.
_______________________________________________________________________________________________________________________________________________ ____
Configuration
_ __________________________________________________________________________________________________________________________________________________
7 2 9 B U
Port
Mode
Interval
Width
Restart
Save
Reset
_____________________________________________________________________________________________________________________________ ______________________
Note:
This function is supported by H/W Ver.E up.
Description
The fiber optical port number
ALS mode for the port
Disable – disable ALS function
Manual – restart the transmitter for one test pulse period
Automatic – restart the transmitter for a test pulse period every one interval time
Set interval time for Automatic mode, unit second
The width of the test pulse, unit second, default 2
Check to turn transmitter on for one test pulse, used in Manual mode
Click to save the changes.
Click to undo any changes made locally and revert to previously saved values.
-153-