From the introduction, we know that there are many different classifications of optical fiber transceivers, but in actual use, most of the attention is paid to the categories distinguished by different fiber optic connectors: SC connector fiber optic transceivers and ST connector fiber optic transceivers.
When using fiber optic transceivers to connect different devices, you must pay attention to the different ports used.
1. Connection of optical transceivers to 100BASE-TX devices (switches, hubs):
Confirm that the length of the twisted pair does not exceed 100 meters;
Connect one end of the twisted pair to the RJ-45 port (Uplink port) of the optical transceiver, and the other end to the RJ-45 port (normal port) of the 100BASE-TX device (switch, hub).
2. The connection of the fiber optic transceiver to the 100BASE-TX device (network card):
Confirm that the length of the twisted pair does not exceed 100 meters;
Connect one end of the twisted pair to the RJ-45 port (100BASE-TX port) of the optical transceiver, and the other end to the RJ-45 port of the network card.
3. The connection of optical transceiver to 100BASE-FX:
Make sure that the length of the optical fiber does not exceed the distance range that the device can provide;
One end of the optical fiber is connected to the SC/ST connector of the fiber optic transceiver, and the other end is connected to the SC/ST connector of the 100BASE-FX device.
In addition, it is necessary to add that many users think that when using fiber optic transceivers, as long as the length of the fiber is within the maximum distance that single-mode fiber or multi-mode fiber can support, it can be used normally. In fact, this is a wrong understanding. This understanding is correct only when the connected devices are full-duplex devices. When there are half-duplex devices, the transmission distance of the optical fiber is limited to a certain extent.
