User's Manual

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module's LED of the system. The table below shows normal/abnormal cases
depending on the status of each module's LED.
Unit LED Indicates
EWDM
LD
Green : Laser Diode normal status
Red :Laser Diode abnormal status
PD
Green : Photo Diode normal status
Red : Photo Diode abnormal status, input optic power low alarm
DOU1,2
LD
Green : Laser Diode normal status
Red :Laser Diode abnormal status
PD1
Green : Photo Diode(PD) of optic port1 is normal
Red : PD of optic port1 is abnormal or input optic power low
PD2
Green : Photo Diode(PD) of optic port2 is normal
Red : PD of optic port2 is abnormal or input optic power low
PD3
Green : Photo Diode(PD) of optic port3 is normal
Red : PD of optic port3 is abnormal or input optic power low
PD4
Green : Photo Diode(PD) of optic port4 is normal
Red : PD of optic port4 is abnormal or input optic power low
System
ON Green : Power on
TXD1 Green flicker : ECPU send NMS Tx data to BIU
RXD1 Green flicker : ECPU receive NMS Rx data from BIU
TXD2 Green flicker : ECPU send NMS Tx data to ROU
RXD2 Green flicker : ECPU receive NMS Rx data from ROU
ALM
Green : OEU system normal (no alarm)
Red :OEU system abnormal (alarm)