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Check optical power first-starting at the transmitter

and then measuring through the system.


  • Identify where the issue is occurring,

   is it at one point or the whole system.


  • If at one point, measure optical power through

   that leg. 


  • If it is the whole system then check the headend 

   or the single fibre trunk.


  • If the optical power is lower than expected, clean

   the connectors and check keyway alignment.


  • If the optical loss through the cable is greater 

   than 0.5dB (unless distances are over 1km)

   suspect the cable or connector. Clean & align



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