Closed-circuit television monitoring system as an important part of security system, has the function of preventing the advance warning, after the event, with the perimeter guard system and access control security system linkage, can obtain better effect.
Because of the importance of closed-circuit television monitoring system, are widely used in banking, highway, airport, residential, buildings, schools, hospitals, family and other places.
Front end equipment: including cameras, lenses, protective cover, support, column, Yuntai, decoder (cctv camera accessories), transformer, backup power supply. Front end equipment selection will directly affect the system effect, especially the camera is reasonable configuration, to be able to suit one's measures to local conditions.
The transmission part: mainly including video cable, audio line, control line and power line. Video line can use coaxial cable ( at a distance of 1000 meters) or cable ( over a distance of 1000 meters ), such as the selection of the coaxial cable, over a distance of 350 metres ( about ), also need to increase the video amplifier; such as the selection of optical fiber cable front-end equipment increased, optical transmitter, optical receiver back-end equipment increase.
Control equipment: including matrix control console, control the keyboard and digital hard disk recorder. Matrix control console can not build, but hard disk recorders must require construction, realize the camera control, switch, video playback and other functions.
The display device includes: main screen processor, monitor, display, television wall, console and other. The main achievement of the camera.