Coaxial cable transmission

Transmission system monitoring and control system equipment and terminal equipment front-end link. Front image signals generated by the equipment, sound signal, various alarm signals transmitted through the transmission system to the control center and control center of the control commands sent to the front-end equipment. TV monitoring system according to the size of coverage, signal transmission distance, the information capacity of the system's function and quality indicators, and the transmission signals of different types of requirements can use different transmission methods. Large amount of information as image signals, bandwidth is wide, when monitoring intuitive, and therefore the focus of transmission is the transmission of video signals.

Advantages of coaxial cable

Coaxial cable is very special, may be called "High King." 600MHz regarded as the limit of the twisted pair, and the coaxial cable, this is only a mere trifle.

Coaxial cable and wire in the rate of the signal around the material (dielectric) is directly related to the choice. Using solid polyethylene transfer rate is 66% of the speed of light using 78% polyethylene foam, a new nitrogen into the (nitrogen-gas-injected) dielectric is 86%, shown in Figure 2. Use of this material means that most of gas within the cable. However, as small bubbles, the density of plastic is still high, the bending wire cables can remain in the center.

In the twisted pair of wire bonding method is sometimes used for coaxial cable, this method can make it smaller, lighter and cheaper. Also, because no plug, and more simple to install. As the bonding process does not use glue, peel without glue residue, and no extra plastic. Cut with pliers, the hand will be able to separate coaxial cable. This coaxial cable can reach 3GHz, can be used in analog or digital video, RGB, and can achieve even higher resolution QXGA VGA