AHD CCTV is an Analog High Definition closed-circuit television video surveillance standard that uses coax cable to transmit HD video from security cameras to DVRs. AHD supports 720p and 1080p HD video resolutions.
AHD CCTV cameras are connected to DVRs using the same type of coaxial cable as traditional analog CCTV cameras, typically RG59 or RG6 coax cable. One of the advantages of AHD over HD-SDI cameras (another HD over coax security camera standard), is that RG59 coax cable can be run long distances without video loss. So far in our experience, installers can reliably use RG69 coax cable up to a max distance of 800 feet for AHD cameras. AHD cameras can also use UTP cable with video baluns to run cable up to 320 Meters / 960 feet with CAT5 cable.
The newer AHD format allows much greater resolutions, up to full HD at 1920x1080 pixels or 2.4MP. A 720p AHD camera is roughly equivalent to a 1000TVL analogue camera. The upper limits of AHD have yet to be fully revealed, but for now up to 1080p is a significant improvement over the original analogue format.
AHD cameras are compatible with analogue DVRs and vice-versa. Also AHD still uses the same cables with BNC connectors for video transmission; whether you have coaxial or a CAT5e cable set up currently, the new cameras will easily replace those older cameras without any issues.
People are quite familiar with Sony Effio, Effio is used to be the main product in analog video surveillance market. Since the CVI, AHD, TVI products come into play, its glare gradually fades away. AHD has three versions: AHD 0.8, AHD 1.0 and AHD 2.0. AHD 1.0 can support 720p high definition (HD) video capturing and recording. AHD 2.0 can support 1080p full high definition (FHD) resolution. Is AHD 720p better than Sony Effio 700TVL? The answer is no, the real test result is AHD 720p is equal to Sony Effio 700TVL.