To check if there is a problem with the fiber closure, first we need to understand the meaning of the indicator light. Here are some simple explanations for the meaning of the indicator light. Check whether the indicator light of the fiber closure or optical module and the twisted pair port indicator are on.
1. If the optical port (FX) indicator of the fiber closure does not illuminate, determine if the fiber link is interspersed with a link. The fiber jumper is connected in parallel by the parallel method; the other is the interpenetration method.
2. If the optical port (FX) indicator of the A transceiver is on and the optical port (FX) indicator of the B transceiver is not lit, the fault is on the A transceiver side: one possibility is: the A transceiver (TX) optical transmission port has been Bad, because the optical port (RX) of the B transceiver does not receive the optical signal; another possibility is that there is a problem with the optical link of the A transceiver (TX) optical transmission port, such as the optical cable or the optical jumper may be broken. It is.
3. The twisted pair (TP) indicator does not light. Please determine if the twisted pair cable is faulty or incorrectly connected. Please use the continuity tester to detect the following conditions. Some twisted pair indicators of the fiber closure will not light until the fiber link is connected.
4. Some fiber closures have two RJ45 ports: (ToHUB) indicates that the adapter cable is a straight-through cable; (ToNode) indicates that the connector of the adapter switch is a patch cord.
5. Some fiber closures have an MPR switch on the side of the box: it indicates that the connection line of the connection switch is a straight-through line method; DTE switch: the connection line of the connection switch is a plug-in method.