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About the security of low voltage cable monitor video line definition

Categories: NewsStars: 3Stars Visit: - Release time: 2014-04-25 20:16:00
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  People on generalized surveillance video line is defined, it is applied to the security of weak current, visual system, wire and cable links cameras and video terminal. Surveillance video line is a kind of coaxial cable, also a coaxial line of video.

  Let's talk about the surveillance video line structure, the conductor (can be steel, aluminum, also can be single or multiple twisted); Insulation layer, usually in PE material physical foaming; Braid (braided copper and aluminum weaving, etc.); The outer sheath with polyvinyl chloride (PVC) in general.

  Surveillance video line quality fit and unfit quality mainly depends on the shielding layer, the braided shielding layer, can the magnetic field around the block, offset signal attenuation. Transmission by a video surveillance video signals corresponding stability.

  Surveillance video line of this structure, make it according to the characteristics of broadband. 1 km cable can reach 1 gb/s ~ 2 gb/s data transfer rate. To use a longer cable at this moment, will transfer rate to decrease, so use the amplifier in the middle. At present, the surveillance video a lot replaced by optical fiber cable, but it is still widely used in the limited and wireless TV and some LAN line.