Fiber optic network circuit module.sfp transceivers module

1. Check whether the indicator light of the optical transceiver or Optical module and the twisted pair port indicator light are on?

a. If the optical port (FX) indicator of the transceiver is not on, please confirm whether the optical link is Cross-link? One end of the fiber optic jumper is connected in a parallel manner; The other end is connected in a cross over manner.

b. If the optical port (FX) indicator light of A transceiver is on and the optical port (FX) indicator light of B transceiver is not on, the fault is at the A transceiver end. One possibility is that the optical transmission port of A transceiver (TX) is broken because the optical port (RX) of B transceiver cannot receive optical signals; Another possibility is that there is a problem with the fiber optic link of the A transceiver (TX) optical transmission port (the fiber optic cable or optical jumper may be broken).

c. The twisted pair (TP) indicator light is not on. Please confirm if there is an error in the twisted pair wiring or connection? Please use a on/off tester for testing; (However, some transceivers' twisted pair indicator lights must wait for the fiber optic link to be connected before they light up)

d. Some transceivers have two RJ45 ports: (To HUB) indicates that the connecting line to the switch is a straight line; (To Node) indicates that the connecting line to the switch is a crossover line;

e. Some transmitters have an MPR switch on the side: indicating that the connecting line to the switch is a straight through line method; DTE switch: The connecting line to the switch is a cross line method.