This is not meant to be a text book on transmission but is intended to remove some of the mystery associated with various methods of transmission. Many approximations and simplifications have been used in writing this guide. This is to make the subject more understandable to those people not familiar with the theories. For general application in the design of CCTV systems it should be more than adequate and at least point the way to the main questions that must be addressed. The manufacturers of transmission equipment will usually be only too keen to help in final design.
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Cable Transmission Cable Types
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For the purposes of this article the following conventions have been used. Fibre Optics is the technology of transmitting data along cables that consist of Optical Fibres.
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By using unshielded twisted pair transmission, CCTV system designers can offer their customers more bang for their buck. By Guy Apple From: http://www.foresight-cctv.com/sptnews.htm
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At present, there are many ways to transmit video signals in security monitoring industry, but the main transmission medium is coaxial cable, twisted pair and fiber. The corresponding coaxial video transmission equipment, amplifiers, respectively, twisted pair video transmission equipment and Optical. View of the coaxial cable, twisted pair and fiber optic monitoring system is currently the most widely used of the three transmission media, following are the analysis of their performance advantages.
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