The coaxial cable is divided into four layers from the inside out: the central copper line (single -stock solid line or multiple twisted lines), plastic insulators, mesh conductive layers and wire outer skin.The central copper wire and mesh conductive layer form a current circuit.Because the central copper line and mesh conductive layer are named by the same axis.Saguar cables can be divided into baseband coaxial cables and broadband coaxial cables (that is, network coaxial cables and video coaxial cables).The coaxial cable is divided into two types: 50Ω baseband cable and 75Ω broadband cable.The baseband cable is divided into fine coaxial cables and coarse coaxial cables.The baseband cable is only used for digital transmission, and the data rate can reach 10Mbps.
Coaxial cable standard
Xiaobian learned from the relevant standard manufacturers that the standard of coaxial cables: the model is CC, the core number is single, the protective cover material is PTFE or Fep, the shape of the material is a round wire, the maximum outer diameter of the wire is 2.5mm, the insulation thickness is the insulation thickness is1.1mm.Lets talk about video coaxial cable standards and structures: Video coaxial cables adopt GB/T14864-1993 national standard.The coaxial cable is divided into four layers from the inside out: plastic insulator, mesh conductive layer and wire leather, center copper wire.The execution criteria of the official coaxial cable: GB/T14864-1993, the wiring cable and the bureaus cable are generally HJVVHJVVPHPVV1, and the execution standard for coaxial cable is GB11327-89
What is coaxial cable
Saguar cables can be divided into baseband coaxial cables and broadband coaxial cables (that is, network coaxial cables and video coaxial cables).The coaxial cable is divided into two types: 50Ω baseband cable and 75Ω broadband cable.The baseband cable is divided into fine coaxial cables and coarse coaxial cables.The baseband cable is only used for digital transmission, and the data rate can reach 10Mbps.CoaxialCable refers to a cable with two concentric conductors, and the conductor and shielding layer shares the same axis heart.The most common coaxial cable consists of a copper wire conductor isolated from insulating material. It is another layer of ring conductor and its insulator on the outside of the inner insulation material.Essence
Saguar cable model
Coaxial cables can be roughly divided into two types, baseband coaxial cables and broadband coaxial cables.The copper -made shielding wire is often used around the cable.The cables are thick and fine, and the thick cables are more suitable for large -scale local networks. This can greatly improve the efficiency of work, and fine cables can be used in the family.Below I list the most common model cable models, RG-8 or PG-1150Ω, RG-5050Ω, RG = 5972Ω, RG-6293Ω.This is the most commonly used by us.
Coaxial cable price
The price of coaxial cables is relatively large due to the different quotes of the brand and the core specifications. Same-cable, super 5 types of twisted lines, six categories, and 0.8-3 yuan.Sameons cables are generally 2.5 yuan per meter, and fiber optic fibers are generally 1.5 yuan per meter wireless brand.Generally, Linksysinteltp-Linkd-Link Friends News ASUS ASUS.
Simple cable transmission distance
The twin -twisted line, such as five categories, the transmission distance of the six types of twin tiered lines is 100 meters, while coaxial cables and optical fibers should be dependent on the specific materials. The following is a specifically the effectiveness of various types of coaxial cables and fiber optic fibers.Transmission distance.The effective transmission distance of the coaxial cable fine cable is shorter than the rough cable, namely: 185 meters of fine cables, 500 meters of rough cables; optical fiber has single -mode and multi -mode fiber, of which single -mode fiber transmission distance is much more far away from multi -mode fiber fiber.Lets take a look at the comparison: how much is the effective transmission distance of the twisted twisted line, coaxial cables, and the optical fiber effective transmission distance? From the above comparison, the higher the optical fiber requirements, the shorter the effective transmission distance.For comparison, the transmission distance of fiber optic fiber is far better than the transmission distance of ordinary network lines. Therefore, for the network where the amount of information is increasing in the future, the laying of fiber lines will be very necessary.

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