ZyXEL Communications PLA-470 V2 - V3.0.5 Guia de Instalação Página 8

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Contents
Preface xiii
Organization of the Book xiii
Acknowledgments
xvii
CHAPTER 1
Introduction
1
PLC Technologies 1
Standard Organizations 2
What Kinds of Standards Are There? 4
Consortiums and Associations 8
Toward a Standardization of PLC Technology 10
Future IEEE Standard 10
Future Interoperability Standard 10
Advantages and Disadvantages of PLC 10
PART I
PLC Theory
13
CHAPTER 2
Architecture
15
Architecture of Electrical Networks 15
Characteristics of Electrical Wiring 17
Modeling Electrical Networks 22
Architecture with a Shared Medium 24
Public Networks 24
Private Networks 24
Analogy with a Network Hub 25
The Concept of PLC Repeaters 25
Layered Architecture 27
The Physical Layer 27
Frequency Bands 27
CHAPTER 3
Functionality
31
Network Mode Functionality 31
Master-Slave Mode 32
vii
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