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Telecom Training Center

Overview of RS-232 and V.24

RS232 Connector

A 45-minute video with student manual that introduces these commonly used interfaces for modems and computers. In addition to explaining the operation of the interfaces, the student will be shown why there are so many ways to make a modem cable.

  • Table of Contents from Student Manual

    • Defining RS-232 and V.24

    • The RS-232 and V.24 Interfaces

    • The Modem Connector

    • Cabling Distances for RS-232

    • Defining and Grouping the Signals

    • A Simple Modem Overview

    • The Modulator or Transmitter

    • The Demodulator

    • Modem Control

    • The RS-232 and V.24 Interface Signals

    • Detail of RS-232 and V.24 Signals

    • Grounding Pins

    • Data Set Testing Pins

    • Unassigned Pins

    • Secondary Signals

    • Timing Signals

    • Signal Quality Detect

    • Data Rate Select

    • RS-232 and V.24 Electrical Signals

    • The Practical Side of RS-232

    • How to Design An RS-232 or V.24 Interface Cable

    • The Importance of Data Set Ready and Data Terminal Ready

    • Non-Modem RS-232 and V.24 Connections

    • Minimum Wire Connections

    • Designing Special Cables for RS-232 and V.24

    • Telling DTE From DCE

    • Cables For Synchronous Communications Interfaces

    • Driving Multiple Signals

    • Noise and Cable Crosstalk

    • Making Up RS-232 and V.24 Cables

    • Configuring the Cable

    • The Electronic Industries Association

    • The Consulting Committee on International Telephone and Telegraph

    • Appendix A: RS-232 and V.24 Signals

Click Here for the complete Text to Section 1
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