1, thin cable
The diameter of the thin cable is 0.26 cm and the maximum transmission distance is 185 meters. When used, it is connected with 50Ω terminating resistor, T-connector, BNC connector and network card. The wire price and connector cost are relatively cheap, and there is no need to purchase equipment such as hubs. It is very suitable for setting up a small Ethernet network with more centralized terminal equipment. The total length of the cable should not exceed 185 meters, otherwise the signal will be seriously attenuated. The impedance of the thin cable is 50Ω.
2, thick cable
The thick cable (RG-11) has a diameter of 1.27 cm and a maximum transmission distance of 500 m. Due to its relatively large diameter, it is less flexible and is not suitable for erection in indoor narrow environments. The RG-11 connector is also relatively complicated to manufacture and cannot be directly connected to a computer. It requires a transfer. The device is turned into an AUI connector and then connected to the computer. Because the strength of the thick cable is strong and the maximum transmission distance is longer than the thin cable, the main purpose of the thick cable is to play the role of the network backbone, which is used to connect several networks formed by thin cables. The impedance of the thick cable is 75Ω.