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Introduction to Cable Television - CATV Book
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Hybrid Fiber Coax - HFCThe hybrid fiber coax (HFC) system is an advanced CATV transmission system that uses fiber optic cable for the head end and feeder distribution system and coax for the customers end connection. HFC are the 2nd generation of CATV systems. They offer high-speed backbone data interconnection lines (the fiber portion) to interconnect end user video and data equipment. Many cable system operators anticipating deregulation and in preparation for competition began to upgrade their systems to Hybrid Fiber Coax (HFC) systems in the early 1990’s.
CATV HFC Distribution System
This figure shows a typical cable distribution system that uses a combination of fiberoptic cable for the core distribution and coaxial cable for the local connection. This diagram shows that the multiple RF television channels at the head-end of the cable television system are shifted in frequency to allow distribution through high-speed fiber cable. The fiber cable is connected in a loop around the cable television service area so that if a break in the cable occurs, the signal will automatically be available from the other part of the loop. The loop is connected (tapped) at regular points by a fiber hub that can distribute the optical signals on fiber spurs. The fiber spurs end into fiber nodes that convert the optical signals into RF television signals that are distributed on the local coaxial cable network.
Related Hybrid Fiber Coax - HFC Definitions CATV Books
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Introduction to Cable Television - CATV Book
This book provides an overview of cable television system technology including cable modems, digital television, HDTV, along with how cable systems are converting from analog systems to digital networks so they can offer advanced services such as ultra broadband, video on demand (VOD) and addressable advertising. $19.99 Printed, $16.99 eBook |
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