CCTV Surveillance Systems can be analogue or digital. The digital age has provided us with new technology, faster internet speeds, better images and the ability to view output over the internet via smart phones, laptops and PCs. We can now view the outputs of CCTV Surveillance while we are on the move or away from home. Typically the analogue CCTV Installations does not offer such flexibility and only offers monitoring from one central location.
The main components of a CCTV Surveillance System are the cameras, the monitor and the recording device. In an analogue system coaxial cable connects the camera with the video recorder. The quality of the output may vary depending on the distance from the camera to the recording equipment and the monitor. The advantages of analogue CCTV systems are that the initial installation is very low cost with less capital outlay than for a digital version. There is general compatibility between models of cameras and other surveillance equipment, providing flexibility on the CCTV Installation you can deploy. Research has shown that analogue cameras can deal with poor lighting conditions better than digital cameras, though this is thought to be improving.
The disadvantages of large scale analogue CCTV Surveillance Systems are that cabling can be expensive and difficult to install, depending on the site. If the CCTV Installation is for outdoors use, the vagaries of the weather must be taken into condition to ensure that water does not get into the system. Safety must also be considered when installing cabling, especially if it is an area which is open to the public. Another disadvantage of an analogue CCTV Installation is that the number of features is limited in comparison to a digital version.
Advantages of digital CCTV Surveillance Systems are improved picture quality, ease of enhancing the original installation and remote viewing of the output of images on mobile equipment. Clearer images provided on the monitor of a digital CCTV Surveillance System mean that it is easier to identify faces. This if very useful if the CCTV Surveillance System is used by the police forces to identify intruders and other criminals so they can be brought to court. Disadvantages of digital CCTV Surveillance Systems are that they are more expensive, do not work everywhere depending on where they are sited and can invade privacy.
Despite the digital revolution and growth in demand for digital CCTV Installations, there is still a place in the market for analogue CCTV Surveillance Systems if you only need to monitor from a single location. Hybrid systems can include both analogue and digital elements with modems being used to convert signals from an analogue camera to a digital recorder and from then on using internet protocols (IP) to distribute the images. With hybrid CCTV Surveillance Systems you can mix and match the advantages of costs over functionality by having cheaper analogue cameras and more expensive digital recording systems providing you with clearer, sharper output. As with other purchases, it will all depend on your budget and requirements as to which option you will choose.