CCTV, as the name implies, is a closed circuit television, which is used for surveillance purposes. Hospitals, Banks, Business Tycoons, Schools, Jails, Jeweler shops, in short wherever watch has to be kept all the 24 hours, installation of cctv cameras has become an absolute necessity.
Equipment needed – Digital Video Recorder (DVR), Cameras of high quality night vision type, ordinary LED cameras, CAT -5 Transmission Cable, RG 59 Cable – length as per requirement – Connection Sockets and pins as required. Step-down Transformer of 12V capacity, Amperage, depending on the load that will be given, manufactured by reputed manufacturers to be chosen.
The Digital Video Recorder, which is the vital equipment that will tell the story of what happened at any given time, has to be installed at a very strategic location. In the case of a house, mounting has to be in the secrecy of the bedroom. The cameras are to be mounted in such a way that optimum visuals are captured by them and transmitted by the cables to the DVR. In the sparsely lighted area, the costly night vision cameras have to be mounted.
CAT-5 Cable should be used because of the ease with which the connection plugs are fixed and unfixed. However for very large number of camera requirements, RG59 cable will have to be used, but they will require specialist skills. In the case of CAT-5 cable used for house hold purposes, a small device called Balun is attached at the end of each cable run to block disturbances in video signals.
The hard drive in the DVR should be large enough for recording purposes for 24X7. For Search menu facilities, speeding up to 32 times speed also should be there, along with pause, moving frame by frame etc for investigation purposes.
Backup feature is vital, and most DVRs have soft discs allowing us to play backup recordings on our laptop computer also.
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