Tag Archives: cctv

CCTV Terms and Definitions

10 Jun

ALC (Automatic Level Control) On AL lenses, aka peak/average control. Adjusting this control allows the auto iris circuitry to either take bright spots

Activity Detection A feature of the generation 3 multiplexor range that uses video motion detection techniques to improve camera update

Alarming The ability of CCTV equipment to respond to an input signal, normally a simple switch closure. The response varies

Analog A signal in which any level is represented by a directly proportional voltage; not digital.

Angle of View The maximum scene angle that can be seen through a lens.

Aperture The lens opening that controls the amount of light reaching the pickup device (imager)

Aspherical Lens A lens designed with a non spherical shape so that it refracts the light passing through it either lower the lens aperture so that it passes more light or decreases barrel distortion on wide angle lenses. Continue reading

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CCTV Surveillance System

10 Jun

cctvBefore joining Siemens Enterprise Communications, I was with Panorama Electronics Pvt. Ltd. – one of the leading system integrators in the field of electronic security solutions in Eastern India.

Panorama is more popular in this region as a consumer electronics company. It took a strategic decision to foray into other sectors like real estate, steel and electronic security solutions some time back.

It was fun to be part of the dynamic group of guys at the Electronic Security division at Panorama. By the time I left Panorama after one and half years, I had begun to enjoy the field – the technologies involved, the people and the work.

It was interesting know from Wikipedia that “the first CCTV system was installed by Siemens AG at Test Stand VII in Peenemünde, Germany in 1942, for observing the launch of V2-rockets. The noted German engineer Walter Bruch was responsible for the design and installation of the system.”

During my Panorama days, when I met clients, they were often confused about the camera to choose. With the influx of the  “Chinese” low quality cheap cameras, most people were confused. Continue reading