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How CCTV works

by Shaal M. Software Developer
CCTV stands for Closed Circuit TV. CCTV uses one or more video cameras to transmit video images and sometimes audio images to a Glossary Link monitor, set of monitors or video recorder.
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Review on How CCTV works

CCTV systems have become extremely popular over the last few decades as the technology has improved and become more affordable. The majority of CCTV cameras in use today are usually for surveillance and security purposes.

Anyone can find CCTV systems at everywhere such as bank, hospitals, railway station, bus station, etc.

Types of Camera :
There are many types of CCTV cameras, categorized by types of images, amounts of frames and types of connections.

Types of images:
They can take both black and white video images as well as color video images. They can also take low light images with special technology to capture video images at night.

Amount of frames:
means Frames per second that a video camera captures and sends to a recording device or monitor per second.
Most CCTV camera captures 30 or more frames per second.

Moreover, some CCTV cameras are extremely small those are used for spying, night viewing.

Types of connection:
Two types of connections can be used for CCTV cameras, one is wired connection and other is wireless connection.

Wired/ fixed connection will be physically connected with computer or recording devices. Mostly, there are in 25, 35, 50, 100 or 500 feet.

RG59 coaxial cable is used for distance upto 600 feet and CAT5 cable is used for distance between 600 feet to 2000 feet.

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About Shaal M. Committed     Software Developer

530 connections, 0 recommendations, 1,450 honor points.
Joined APSense since, May 21st, 2010, From BLR, India.

Created on Sep 29th 2010 01:53. Viewed 1,656 times.

Comments

Harold Baughman Professional   
Nice change-of-pace blog....."THANKS, ALOK"

Harold
Sep 29th 2010 10:02   
Shaal M. Committed   Software Developer
@Harold Thanks for comment.
Sep 29th 2010 10:04   
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