Coaxial cables can be divided into thick coaxial cables and thin coaxial cables according to their diameters. Thick cables are suitable for relatively large local networks. Its standard distance is long and its reliability is high, because it does not need to cut the cables during installation.
Therefore, the network access position of the computer can be flexibly adjusted according to the needs, but the transceiver cable must be installed in the thick cable network, which is difficult to install, so the overall cost is high.
On the contrary, the thin cable installation is relatively simple and the cost is low, but because the cable needs to be cut off during the installation process, the basic network connector (BNC) must be installed on both ends, and then connected to the two ends of the T-shaped connector, so when there are many connectors, it is easy to produce bad faults. hidden danger, which is one of the most common failures in running Ethernet.
coaxial cable conduction
Coaxial cables conduct alternating current rather than direct current, which means the direction of the current reverses several times per second.
If you use ordinary wires to transmit high-frequency currents, this wire will act as an antenna that transmits radio to the outside. This effect consumes the power of the signal and reduces the strength of the received signal.
Coaxial cables were designed to solve exactly this problem. The radio emitted by the central wire is isolated by the mesh conductive layer, and the mesh conductive layer can control the emitted radio by grounding.
