A modern market of video surveillance systems offers the widest choice of equipment and solutions, built under different technologies and tech families, such as: CCTV, HDCCTV, IP. All of them differ by something, look like something else, everything has it’s own advantages and disadvantages. No wonder, it’s hard to choose the one tech, which accords to a desirable balance of sot-reliability-quality-simplicity and will meet the specific needs of a customer in so big variety of technologies.

In this article we shortly compare techs, gaining a special attention, and elaborate on AHD one.

AHD is a tech of HD/FullHD video, audio and control signal transmission via a regular coax cable at the distance of 500 m without any latencies and losses. NEXTCHIP – is the famous Korean company, developed AHD tech, whose production applies in video recorders and video cameras of the most of manufacturers of video surveillance systems. 

AHD tech core features:

High image quality at the resolution of 720p/1080p

 
The technology uses a progressive scan while forming a signal and division of brightness and color components of an analog signal: that allows eliminating a blur and blinking, improving a color reproduction.

AHD 720p

Reliable and inexpensive connection 

AHD data transmission technology doesn’t lay a big claim on a coax cable quality. That’s why any available cable can be used for data transmission, including a composite one.

Long distance of a network laying without quality losses 
Video data is transmitted without quality losses at the distance of 500 m.

Therefore, if a high image quality, capability of an audio record/playback and device PTZ-control at the distance of 500 m and more are requires from a video surveillance system, and a customer has a very limited budget and isn’t ready to bear with a video latency, maintenance difficulty, possible infrastructure troubles and risk of unauthorized video surveillance system access through external network nor a dependence on one manufacturer, opened AHD technology, developed by an admitted participant of the video surveillance market, absolutely is an eligible choice, to which you should pay attention first. Moreover, AHD video recorders can be an excellent solution in case of hybrid systems, including analog and IP video cameras.