AHD Video Surveillance Technology

AHD (Analog High Definition) technology is a type of analog video surveillance technology that provides high-definition video quality over coaxial cables.
AHD equipment provides a resolution of AHD-M - 1280x720 (720p) and AHD-H - 1920x1080 (FullHD).

AHD recorders are compatible with conventional analog cameras and can be a hybrid solution with the ability to connect IP cameras. Such recorders are also called hybrid.


Some of the benefits of AHD technology include:


  1. High-definition video quality: AHD cameras can provide up to 1080p high-definition video quality, which is much clearer and more detailed than traditional analog cameras.
  2. Longer transmission distance: AHD cameras can transmit video signals over longer distances than traditional analog cameras without losing signal quality, up to 500 meters.
  3. Easy installation: AHD cameras can be easily installed using existing coaxial cables, making them a cost-effective solution for upgrading analog surveillance systems.
  4. Cost-effective: AHD cameras are generally less expensive than IP cameras, making them a more affordable solution for high-definition video surveillance.
  5. Compatibility: AHD cameras are compatible with existing analog surveillance systems, allowing for easy upgrades without having to replace the entire system.

Overall, AHD technology provides a cost-effective and high-quality solution for video surveillance systems, with improved video quality and longer transmission distances over traditional analog cameras.

AHD still makes sense when the cable is the expensive part

Replacing a camera is easy; replacing hundreds of meters of installed coax can be the expensive part of a project. AHD and other HD-over-coax formats remain useful where existing cable routes are difficult to rebuild, power is already available at camera points and network features are not required at every edge device. The trade-off is that intelligence and remote configuration are usually concentrated in the recorder rather than distributed across network cameras.

A staged migration path

An AHD installation does not need to become IP in one step. Hybrid recorders and encoders can preserve existing cameras while newer areas move to IP and VMS-based management. SmartVision is most useful once a standard network stream becomes available from the recorder or encoder. Compare Hybrid Cameras and CCTV architecture when planning that transition.