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• HANDBOOK – Mitigation measures for telecommunication installations – Part 1: General Principles
  • CONTENTS
  • 1 Scope
  • 2 References
    • 2.1 Basic guidelines
    • 2.2 EMI
    • 2.3 Overvoltage and overcurrent
  • 3 Abbreviations
  • 4 EM environment around/in a telecom installation
  • 5 Noise sources and typical malfunction phenomena
    • 5.1 Noise sources
    • 5.2 Typical malfunction phenomena
  • 6 Identification of noise sources
    • 6.1 Environmental conditions
    • 6.2 Malfunction patterns and related issues
    • 6.3 Visual inspection
    • 6.4 Functional tests and electrical characterization
    • 6.5 Decapsulation and internal visual inspection
    • 6.6 Fault site location techniques
  • 7 Mitigation measures
  • 8 Remarks on mitigation measures
    • 8.1 Emission and immunity improvement
    • 8.2 Overvoltage and overcurrent
  • 9 Methodology for measuring and evaluating EM-environment
    • 9.1 Measuring tools
    • 9.2 Measuring EMI noise
    • 9.3 Finding EMI sources
  • 10 Procedures for solving EMC problems in the field
    • 10.1 Items to be checked before considering EMI
    • 10.2 Checking compliance with the requirements
    • 10.3 Measuring the EM environment
    • 10.4 Evaluating the EM environment and clarifying EMI sources
    • 10.5 Procedure
  • Annex A – Examples of mitigation measures
    • A.1 Applying mitigation measures to telephone
    • A.2 Applying mitigation measures to FAX
    • A.3 Applying mitigation measures to switching equipment
    • A.4 Applying mitigation measures to ADSL modem
  • Annex B – Ancillary telecom equipment and installation of additional telephones
  • Annex C – Basic protection configuration