HD-SDI is a new technology offering full High Definition 1080p picture over coaxial cable. Cameras are available with resolution up to 2 MegaPixel. Often you can use existing wiring from your old analog system. Installation of HD-SDI CCTV System is as easy as installation of analog system. Basically all you need to do is run cables from the HD-SDI DVR to each and every camera. HD-SDI Systems use same type of connectors as analog systems. There is no networking knowledge required to setup HD-SDI surveillance. It is simple Plug and Play installation.