Monthly Archives: June 2015

  • AHD (Analogue High Definition) CCTV is the new standard format or CCTV surveillance equipment which was released in 2015 which typically uses coaxial cable with BNC connections. As you may know traditional analogue CCTV equipment worked on TV Lines (TVL) to determine the capture and output resolution up to a maximum resolution of WD1/960H (960x576 pixels).

    However the newer AHD format allows much greater resolutions, at the time of writing this article, 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.

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  • A question we often get asked in this business is why most surveillance cameras don’t come with audio recording built it. Whilst we do have some specialist cameras with audio and also microphone attachments, there are a lot cameras and DVRs don’t come with audio monitoring. There is a practical reason behind this and that is to bring manufacturing costs down, but there is also an ethical and legal reason too which you should be aware of before setting up audio monitoring on your CCTV system for personal or business application.

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  • Electromagnetic hypersensitivity (EHS) or Electrosensitivity (ES) has been gain more and more traction in recent years, and more recently I’ve been seeing talk about IP and CCTV surveillance equipment potentially affecting. The symptoms of EHS have generally been reported to include skin sensitivity, skin blemishing, light sensitivity, dizziness, fatigue, headaches, joint pain, and high blood pressure.

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