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Do you know how many types of CCTV Cables are there?

2021-04-29

Do you know how many types of CCTV Cables are there?

Three categories of  CCTV Cables

 

CCTV cables are familiar electronic components, but do you know what types of CCTV Cables are? The following editor will

 introduce the three major categories of CCTV Cables.

 

1. CCTV Coaxial Cable

CCTV Coaxial cable mainly uses solid polyethylene insulated 75Ω radio frequency coaxial cable to transmit video signals. When selecting

 the type, the attenuation and anti-interference of video signals are mainly considered. The length of the transmission distance of each specification 

and type of wire is related to the front and rear equipment, site conditions and construction quality. The unevenness of the color TV baseband signal

 frequency point at 5.5MHz shall not be greater than 3dB, otherwise a cable equalizer is required. However, in actual projects, due to the limitation of

 detection conditions, the acceptance is mostly subjectively evaluated according to the image level 5 damage standard. When conditions are possible, 

a signal compensator can be added on the line to extend the transmission distance, but generally no compensator is used. The cascade use.

 

2. Optical Fiber CCTV Cable

Optical fiber CCTV Cable is the best choice for long-distance transmission, and the signal transmission process is free from electromagnetic 

interference. For established living communities and other areas that are not convenient for re-ditching and trenching, the overhead 

co-transmission of optical fiber and power supply cables is the smallest and sometimes the only option. When lightning protection is required,

 metal-free optical fiber CCTV Cable should be used.

 

 3. 100Ω digital communication CCTV Cable

Digital communication CCTV Cable used in CCTV system should pay attention to two parameters: Because the capacitance has high conductivity, 

too large capacitance has a strong suppression effect on low-frequency signals, and the distributed capacitance of the cable must be less than 60pF/m; The loop

 of the twisted pair cable The resistance must be less than 18Ω/100m. These two parameters directly affect the transmission distance and the degree of distortion

 of the image.

 

The above are the three major categories of CCTV Cables. Everyone can choose different categories according to different conditions while applying 

them, so that CCTV Cables can be fully utilized.