How are coaxial cables categorized?

I. How is coaxial cable categorized? A coaxial cable (coaxialcable) is a cable that has two concentric conductors with a common coaxial conductor and shield. The most common type of coaxial cable consists of copper wire conductors isolated by an insulating material. Outside the inner insulating material is another ring conductor and its insulator, and then the entire cable is wrapped by a sheath of polyvinyl chloride or Teflon material. Classification method of coaxial cable: coaxial cable can be divided into two basic types: baseband coaxial cable and broadband coaxial cable. Currently, baseband is a commonly used cable. Its shielding is copper mesh, with a characteristic impedance of 50 (such as RG-8. RG-58, etc.); the shielding of commonly used cables for broadband coaxial cables is usually made of aluminum stamping, with a characteristic impedance of 75 (such as RG-59, etc.). Coaxial cable according to its diameter can be divided into: coarse coaxial cable and fine coaxial cable. Coarse cables are suitable for relatively large local networks with long standard distances and high reliability. Since there is no need to cut the cable during installation, the computer's access position can be flexibly adjusted as needed. However, coarse cable networks must be installed with transceiver cables, making installation difficult and the overall cost high. On the contrary, thin cable installation is relatively simple and low cost, but because the installation process cuts off the cable, the basic network connector (BNC) must be installed at both ends and then connected to the ends of the T-type connector, so the joints are prone to undesirable hazards, one of the most common failures in Ethernet operation.

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