Main category
Coaxial cables can be divided into two basic types, baseband coaxial cables and broadband coaxial cables.
Baseband coaxial cable
The shielding layer of the baseband coaxial cable is usually a mesh structure made of copper, and its characteristic impedance is 50Ω. The cable is used to transmit digital signals, and the commonly used models generally include RG-8 (thick cable) and RG-58 (thin cable). The most intuitive difference between a thick cable and a thin cable is that the cable diameter is different. Thick cable is suitable for relatively large local networks. It has a long standard distance and high reliability; however, transceivers and transceiver cables must be installed in thick cable networks, and installation is difficult, so the overall cost is high. On the contrary, the thin cable is relatively simple and the cost is low; but because the cable needs to be cut during the installation process, it is easy to cause the hidden danger of poor contact
when there are many joints.Whether it is a network connected by a thick cable or a thin cable, the point of failure often affects all the machines on the entire cable, and the diagnosis and repair of the fault are very troublesome. Therefore, baseband coaxial cables have gradually been replaced by unshielded twisted pair or fiber optic cables.
Broadband coaxial cable
The shielding layer of broadband coaxial cable is usually stamped from aluminum, and its characteristic impedance is 75Ω. This kind of cable is usually used to transmit analog signals, and the commonly used model is RG-59, which is a standard transmission cable used in cable television networks, and can transmit multiple channels of TV signals in one cable at the same time. Broadband coaxial cables are also used as a transmission medium for some computer networks.
Main category
Coaxial cables can be divided into two basic types, baseband coaxial cables and broadband coaxial cables.
baseband coaxial cable
The shielding layer of the baseband coaxial cable is usually a mesh structure made of copper, and its characteristic impedance is 50Ω. The cable is used to transmit digital signals, and the commonly used models generally include RG-8 (thick cable) and RG-58 (thin cable). The most intuitive difference between a thick cable and a thin cable is that the cable diameter is different. Thick cable is suitable for relatively large local networks. It has a long standard distance and high reliability; however, transceivers and transceiver cables must be installed in thick cable networks, and installation is difficult, so the overall cost is high. On the contrary, the thin cable is relatively simple and the cost is low; but because the cable needs to be cut during the installation process, it is easy to cause the hidden danger of poor contact when there are many joints.
Whether it is a network connected by a thick cable or a thin cable, the point of failure often affects all the machines on the entire cable, and the diagnosis and repair of the fault are very troublesome. Therefore, baseband coaxial cables have gradually been replaced by unshielded twisted pair or fiber optic cables.
broadband coaxial cable
The shielding layer of broadband coaxial cable is usually stamped from aluminum, and its characteristic impedance is 75Ω. This kind of cable is usually used to transmit analog signals, and the commonly used model is RG-59, which is a standard transmission cable used in cable television networks, and can transmit multiple channels of TV signals in one cable at the same time. Broadband coaxial cables are also used as a transmission medium for some computer networks.
