Apartment undertake Huizhou Jiang Chen Digital Cable Installation

I. Introduction With the people's material and spiritual life of the improvement of the trivial things around increasingly stringent requirements, which are nothing more than television culture. Rich television programs, a clear picture of the quality of daily life of the people has become an indispensable visual and spiritual enjoyment. According to requirements of your organization, the entire system a total of 50 sets of television programs, program content rich. Second, the design ideas based cable television network development, improve signal quality, rich content, reduce network failure, ensuring the normal TV premise, ensure cable networks advanced, practical and safe design ideas Third, the design should be based on planning and design In accordance with existing national standards, technical parameters should be better than the standard value. 1, GB6510-86: "30MHz-1GHz sound and television signal cable distribution systems"; 2, GBJ -92: "Civil cable television systems engineering technical specifications"; 3, GY106-92: "cable television system which technology norms "; 4, GB50200-94: cable television systems engineering technical specifications" 5, GY / T114-94: "intelligent building systems engineering design standards" 6, GYJ41-89: "Broadcasting earth station design specifications" 7, GB50057 -94: Building Lightning Protection Design Code 8, GBJ120-88: industrial enterprise community antenna television system 9, SARFT document: "On stage cable network technology system view" (Revised) 10, GY5075-2005: "Cities cable television network design specifications "11, GY5075-2005:" Cable network construction and acceptance of "Fourth, the system overview according to the development trend of the hotel project design point of cable systems and cable systems requirements, considering the hotel Development Status potential demand and domestic cable systems engineering, systems technology and equipment in general should reach the advanced level of mature technology, cable television systems use high quality broadcast 860MHz Adjacent channel modulator front end, the transmission network is designed to check 860MHz o frequency transmission, the maximum transmission 99 sets of TV shows (DS1-DS57, Z1-Z42), the program actually used 50 channels. Number of Programs are the basic parameters of the system design, which is to determine the network transmission bandwidth, selected on the basis trunk transmission mode and other technical issues. Systems use high quality, low attenuation high physical foam coaxial cable, could later be expanded to 1000MHz bandwidth to meet the current needs of your hotel work, but also to adapt to technological development and changes in the next five to ten years. According to the design requirements, the system transfer a total of 50 sets of programs, the program intends to receive Georgia -3S, Star 6B, 50 sets of TV shows. According to the characteristics and the actual needs of the hotel cable engineering, system design of the main trunk wireless TV system, distribution system uses branching distribution, the line clear and concise manner, particularly suitable for buildings user distribution systems. The project by cable television systems engineering technical specification is a Class A, the system should meet the following design properties: carrier to noise ratio ≥ 44dB crosstalk modulation ratio ≥ 47dB carrier intermodulation ratio ≥ 58dB V. An Introduction 1 Overview according to cable television systems design requirements, cable television system bandwidth expensive hotel project by the adjacent 860MHz system design, implementation, multi-function, multi-program, high-performance real-time images, language, and data transmission, need to adapt to long-term development of China's information industry to adapt to your hotel Advanced engineering requirements. Adjacent 860MHz transmission system for the current ordinary large, medium-sized city cable television network used, which is characterized by: mature technology, optional more products, large transmission capacity, up to 99 TV channels can be transmitted (DS1-DS57, Z1-Z42 ), image and signal transmission quality and other characteristics