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
Premium Satellite television Cable television Television
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
Premium Orders of magnitude Electricity Electrical resistance
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
Premium Optical fiber Refractive index Total internal reflection
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
Premium Optical fiber
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
Premium Cable Coaxial cable Electric current
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 =
Premium Twisted pair Electromagnetic radiation Wave
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
Premium Cable television Coaxial cable Broadband Internet access
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
Premium Optical fiber
FIBER-OPTIC COMMUNICATION Introduction Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. The light forms an electromagnetic waves that is modulated to carry information. First developed in the 1970s‚ fiber-optic communication system have revolutionized the telecommunication industry and have played a major role in the advent of the information over age. Because of its advantages over electrical
Premium Optical fiber Laser
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
Premium Cable television Satellite television Coaxial cable