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Definitions (27)
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operational requirement
This is the name of a formal document that attempts to capture details of what it is that any CCTV system is designed to address. As such it forms the basis for the technical design of any sytem.
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bs 8418
This is the UK’s code of practice for detector activated remote monitored CCTV. NCP 104
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ss 2003
This is the code of practice used for non BS 8418 systems by Security Systems and Alarm Inspection Board listed companies. Thereafter many other terms will be encountered, with this glossary listing t [..]
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lenses
An optical device to capture and focus light into the camera’s image capture system. Lens types include: zoom, fixed, wide angle or varifocal types. Mounts
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iris
Shutter controlling the amount of light entering a camera. An iris can be a fixed or auto-iris type i.e. responds to changing light levels automatically. Images
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pixel
The smallest area of the camera CCD that is capable of capturing light falling on it. The greater the number of pixels per defined area the higher the resolution or definition. Pixel capability is usu [..]
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pan/tilt and ptz units
Motorised devices that move a camera either horizontally (pan), vertically (tilt) or both (pan and tilt). If the lens is also adjustable these are called pan, tilt and zoom (PTZ) units. Presets
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domes
Transparent hemispherical protective lens/camera housing, often used with PTZ cameras. Lux
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light emitting diodes
A form of lighting with low energy consumption/ heat output, unlike traditional filament bulbs. IR Illuminators
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masts/brackets
The camera posts or fixings. Housings
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