7-1
Chapter 7
Basic Cabling Testing
Chapter 7 provides the following information:
• A description of LAN cable construction
• A description of channel, basic link, and permanent link configurations
• Explanations of LAN cable tests
• Explanations of the HDTDX and HDTDR analyzer tests and plots
• Basic troubleshooting procedures for LAN cable.
LAN Cable Construction
LAN cables have a number of characteristics in common with other types of
electrical cables. All electrical cables have continuity, which means that they serve
as a complete path for electrical current flow. Each end of a cable has some type of
connector for connecting the cable to the appropriate electrical device. Cables with
multiple wires usually have a pin assignment that describes how the wires are
arranged in the connectors.
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