22/01/2021
HD Over Coax Pros and Cons
HD over Coax (also known as HD Analog) refers to the transmission of high-definition video and audio streams over coaxial cables that have traditionally been limited to standard quality video.
There are several competing technologies in this category, including CVI, TVI, and AHD. They vary somewhat in capability, but in general, the major benefits over an IP video system include:
Low upgrade costs. When replacing an existing system, these cameras can connect to existing coaxial cables, eliminating the need for new wiring. They also support significantly longer cable distances than wired IP networks, which require additional hardware if cameras are located more than 100m from the video recorder or nearest switch.
Simple installation and setup. Most products in this category are designed for near plug-and-play operation with the help of a qualified security vendor.
No interference with networks. These systems can operate in complete isolation from the data network, if desired.
Support for high resolution cameras. Current cameras support resolutions up to 4MP, and offer additional features to maximize image quality, such as wide dynamic range and built-in infrared illumination.
HD over Coax is ideal for companies that have an existing analog infrastructure in place, would like to reduce overall cost and are looking to upgrade their cameras to 1080p quality or greater. It may also be a fit for new installations, if your budget is extremely limited or there are multiple cable runs that exceed the limits of a traditional wired network.
