HD CCTV is a new open standard for trait HD digital video over coaxial cable. HD CCTV doesn’t require changing the existing coaxial cable infrastructure and it is an only a matter of replacing the camera and a security camera recorder. Camius TRiVault series security camera recorders support not only regular CVBS analog cameras but AHD, HDCVI and HDTVI types. CVBS stands for "Composite Video Blanking and Sync”. It is a conventional analog signal delivered through an analog BNC connector. It also can be delivered through an RCA connector or other types (older cameras sometimes used a PL-259 connector). CVBS signal can support max. 960H video resolution. 960H represents the number of horizontal pixels in a video signal transmitted from a camera or received by a security camera recorder DVR (Digital Video Recorder). 960H represent 960 x 576 (PAL) or 960 x 480 (NTSC) pixels, you can compare it with the lower D1 resolution providing 720 x 576 pixels (PAL), or 720