Quick evaluation and verification of an incident detected by an anti-intrusion device. But the "verification" or "presence detection" function is only one of the many advantages of integrating a cctv into a security system. Cctvs have other advantages, such as a recognized "deterrent" effect against certain threats. It is also a fundamental support element for fire detection and access control systems. On the other hand, it is a complementary element of the first order, in emergency evacuation situations. In addition, it is the essential tool for routine surveillance tasks. Let's see below some
issues related to cctv. [caption id="attachment_3172" align="aligncenter" width="300"] the cameras are the visible part of the cctv[/caption] technical fundamentals of cctv from a technical point of view, the cctv scheme is made up of optics, cameras, transmission systems, switches, recording equipment and video monitors. The function of optics and cameras is e commerce photo editingto capture and transform the image. The optics would be the lenses in charge of focusing the sensor element of the camera, the light reflected by the elements of the scene to be displayed. The cameras , on the other hand, are the technical element whose function is to convert the light signal reflected by the optics into the video signal necessary for it to be transmitted remotely. This video signal is usually electrical. But images can be transmitted using almost any type of known energy, such as microwaves or radio frequencies.
The signal is sent through the transmission system, which is made up of links (such as fiber optics). The links allow the transport of the video signal generated in the cameras, to the switches. Inesem business school master in private security management more information the switching systems receive and decode the signal. This allows the display of a large number of cameras, on a small number of monitors for example. The switches, controlled by microprocessors, allow the selection of a specific camera