CCTV INSTALLATION
LINE - POWERED CAMERA
The simplest system is the line-powered camera, which has a camera connected directly to a monitor by a coaxial cable, and from that evolved the outputs from four cameras into the monitor, with a built-in microphone. Now there are many line-powered systems on the market that are far more sophisticated, with most of the earlier disadvantages having been overcome.
Then there is the system in which both camera and monitor are mains-powered, with a coaxial cable carrying the video signal from the camera to the monitor, which allows for much more flexibility in designing complex systems. You could also add a video recorder.
Fixed cameras have their obvious limitations, especially if there is a large area to cover, so the advent of cameras fixed to a movable platform, controlled from a remote location, was warmly welcomed.
In terms of camera technology, older cheaper units use analog technology ndash; whereas newer IP CCTV and HD CCTV cameras use digital high-definition technology to give you better images and more flexibility. This mean you need fewer cameras to do the same or better job as an older analog system.
HELPS:
- Deter thieves
- View remote locations, including multiple locations at once
- Safely monitor premises from a control room
- Provide CCTV evidence