Guide of Terms in the Video Security Industry ABERRATION – Any inherent deficiency of a lens or optical system. Aberrations are responsible for imperfections in shape or sharpness of the image. AGC – Automatic Gain Control, an electronic circuit that amplifies the video signal when the strength of the signal falls below a given […]
Central Power Supply Installation (Analog Systems) Video Over Cat5/Cat6 (Balun Use for Analog Cameras) Tools, Connectors and Cables (Analog BNC connectors) BNC Connector Install Video Over Cat5/Cat6 (Baluns)
What is an Infrared (IR) LED? A light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it. The light is not particularly bright, but in most LEDs it is monochromatic, occurring at a single wavelength. The output from an LED can range from red (at a wavelength […]
DVR’s & NVR’s – What are they? First, lets make sure we are talking about a security-based DVR (Digital Video Recorder)or an NVR (Network Video Recorder). These are very different from your home DVR used to record cable TV or movies. A TV-type DVR has one or more inputs, and a TV tuner, to be […]
