Abstract

Publisher Summary This chapter provides an overview of the basic principles of cabling in data communication. The most common types of cables used in data communications systems are twisted pair, coaxial, and fiber optic. They all differ in signal and mechanical characteristics, installation convenience, and costs. It is important to consider noise susceptibility and data rate values of individual system components when determining the type and specification of wiring to be used. Specific noise details of the various system components are normally available from the manufacturers or suppliers. Two wire open lines, twisted pair, and coaxial cables are all manufactured with copper conductors and extruded plastic insulation. This construction combines good electrical characteristics with mechanical flexibility, ease of installation, and low cost. Fiber-optic cable is technologically different. Aluminum conductors are seldom used for data communication cables because of their higher resistance and other physical limitations, such as lack of flexibility. This chapter lists the basic cable types and describes the general properties of copper-based cables. It also discusses the properties and use of two-wire open lines, twisted pair cables, and coaxial cables. Properties, use, theory of operation, handling, and limitations of fiber-optic cables are also explained.

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