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Solutions Overview
Trouble shooting method for optical fiber network
2016-09-01
What should we do when there is a failure in the optical fiber network? According to the following points you can find
out the optical fiber network fault, the first look at the optical transceiver or the light module of the light and the twisted
pair port indicator light is bright?


A,such as the optical transceiver (FX) indicator light does not shine, please confirm whether the fiber link has cross link?
Optical fiber jumper A end is parallel connected B terminal is cross connected.


B, such as a terminal transceiver optical interfaces (FX) indicating lights, B-side transceiver, optical interfaces (FX)
indicator light does not shine, the fault in a transceiver, a may be: a end of the receiver and transmitter (TX) optical
transmitting port has been bad, because the B-side transceiver optical interfaces (Rx) to receive the light signal;
another possibility is: a end of the receiver and transmitter (TX) send light the fiber link is broken problem .


C, twisted pair (TP) indicator light is not bright, please determine whether the twisted pair wire connection is wrong or
wrong? Please use of on-off tester; (but some of the transceiver of the twisted pair indicating lamp should be the fiber
link connected to bright, see IMC fiber transceiver site commissioning manual d), some transceivers have two RJ45
port: t0 (hub) that connect the switch connecting line is a straight line; t0 (node) said connection switch connection line
is the intersection line; E, some transceiver side have MPR switch: that connect the switch connecting line is a straight
line; DTE switch: switch is connected to the connecting line is cross line.


optical fiber, optical fiber jumper has been broken?

A, fiber optic cable, through fault detection: using laser flashlight, solar light, a luminous body opposite to one end of
cable joints or coupling of light; at the other end see whether there is a visible light? If there is visible light shows that
the cable does not break.


B, fiber connections through fault detection: using laser flashlight, solar light, a luminous body opposite to one end of a
fiber jumper light; at the other end see whether there is a visible light? If there is a visible light indicates that the optical
fiber jumper is not broken.


half / full duplex mode is wrong?

Some transceiver side has FDX switch: said full duplex; HDX switch: half duplex.


Hunan Guanglian Photoeletricity Technologies Co., Ltd  is a leading fiber optic cable manufacturer in China,if you want
to know more about it ,you can contact us .


E-mail: sales@gl-fibercable.com 


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