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. You can find different styles of AHD CCTV cameras here.
What is the difference between AHD and TVI?
They are both enclosed in the same weatherproof outdoor housing. They have the same number of infrared LEDs and they both have a 2.8-12mm lens. The only difference between them is that one uses a TVI chip and firmware and the other uses AHD.
AHD vs 960H Video Resolution
The below images compare a video surveillance photo capture by a 960H CCTV camera with 720p and 1080p AHD CCTV cameras. The first two cameras where connected to an iDVR-E8 DVR to capture the images. The 1080p camera was connected to an iDVR-PRO AHD / HD-TVI / analog CCTV hybrid DVR. When I first wrote this article, 1080p AHD cameras were not yet available. As of September 2015, I have access to 1080p cameras and the latest iDVR-PRO recorders work with analog, 720p and 1080p cameras (AHD and HD-TVI).
The analog and 720p AHD camera were both displayed full screen at 720p resolution when the image was captured. The 1080p AHD camera was displayed at 1080p resolution. Please click on the images to see a full size view.