Chapter 11 Cable‚ Satellite‚ and Internet Television True/False 1. Cable TV was developed to allow viewers access to movies and other programs that they couldn’t receive through over the air broadcasts. Ans: F 2. As far as cable TV is concerned‚ in the past 20 years the most significant developments have been legal ones. Ans: T 3. Using VOIP‚ cable companies can offer consumers an alternative to the services provided by traditional telephone companies. Ans: T 4. Cable and satellite networks
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Underground Cables 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.9 11.10 11.11 11.12 11.13 11.14 11.15 11.16 11.17 11.18 11.19 11.20 11.21 11.22 11.23 Underground Cables Construction of Cables Insulating Materials for Cables Classification of Cables Cables for 3-Phase Service Laying of Underground Cables Insulation Resistance of a Single-Core Cable Capacitance of a Single-Core Cable Dielectric Stress in a Single-Core Cable Most Economical Conductor Size in a Cable Grading
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Fiber Optics History of Fiber Optics History Of Fiber Optics In 1870‚ John Tyndall‚ using a jet of water that flowed from one container to another and a beam of light‚ demonstrated that light used internal reflection to follow a specific path. • Alexander Graham Bell patented an optical telephone system‚ which he called the Photophone • He dreamed of sending signals through the air‚ but the atmosphere didn’t transmit light as reliably as wires carried electricity. • During the 1920s‚ John
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Attenuation Effects on Data Transmitted through Cable Abstract Attenuation refers to any reduction in the strength of a signal. Attenuation occurs with digital or analog signals. Attenuation is the end result of signals being transmitted extended distances. Attenuation is usually expressed in units called decibels (dBs). The cable type will determine at what point along the length of the cable signal degradation occurs. Repeaters can be inserted along the length of the cable to boost the signal
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MODERN TRENDS IN OPTICAL COMMUNICATION (FIBER OPTIC COMMUNICATION) CONTENTS ❖ Introduction ❖ Advantages of Fiber Optics ❖ Optical Transmitters ❖ The Optical Fiber ❖ Launching the Light ❖ Losses in Optical Fiber ❖ Optical Fiber Bandwidth ❖ Fiber Optic Cable Construction ❖ Other Types of Fibers ❖ Optical Receivers Introduction Our current "age of technology" is the result of many brilliant inventions and discoveries‚ but
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Introduction Data communications (Datacom) is the engineering discipline concerned with communication between the computers. It is defined as a subset of telecommunication involving the transmission of data to and from computers and components of computer systems. More specifically data communication is transmitted via mediums such as wires‚ coaxial cables‚ fiber optics‚ or radiated electromagnetic waves such as broadcast radio‚ infrared light‚ microwaves‚ and satellites. Data Communications =
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cable modem: ABSTRACT Cable modems are devices that allow high-speed access to information at a distant server may it be Internet server or video on demand server‚ via a cable television network. While similar to the traditional (analog) dialup modems‚ a cable modem is significantly more powerful‚ capable of delivering data approximately 500 times faster. During the early to mid - 1990s‚ the two-way interactive communication capability of the existing cable network infrastructure was realized
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Fiber optics is a cable that is quickly replacing out-dated copper wires. Fiber optics is based on a concept known as total internal reflection. It can transmit video‚ sound‚ or data in either analog or digital form . Compared to copper wires it can transmit thousands of times more data (slide 2) . Some of its general uses are telecommunications‚ computing‚ and medicine. <br> <br>The very first "fiber" was made in 1870 by the British physicist John Tyndal. In this experiment that he showed to the
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Cable Industry Regulation NETW 586 Telecom Law and Regulation Due Date: 25th August 2013. I. Abstract Cable industry has undergone a lot of evolution since the very first time it came into existence. First the paper will discuss cable television‚ telecommunication act 1934 and history of cable industry. The origin and importance of both regulation and deregulation of cable industry will be discussed. The various economic impacts; telecommunication‚ broadband
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the Internet. This has many disadvantages like very poor speed etc. To solve the problem‚ Internet data can be transferred through Cable networks wired to the user’s computer. Different types of connections used are Public Switched Telephone Networks (PSTN) connection‚ Integrated Services Digital Network (ISDN) connection and Internet via Cable networks. Various advantages are high availability‚ high bandwidth to low cost‚ high speed data access‚ always on connectivity etc. Communication between
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