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ANSI C63.4 - Revision

Use of Ferrite Stabilization of Exit Cables


  • Future Conference Calls:
    • June 9, 2003 - 11 AM EST / 8 AM PST
    • June 19, 2003 - 11 AM EST / 8 AM PST

  • Draft - Initial Findings and Current TG Position
  • Proposed Revision to ANSI C63.4
  • Issues
  • Issue / Action Item Owner / Resolution Leader
    • Technical Specification of Ferrite Channel
      • Specification of Impedance vs Material Characteristics
      • If impedance is specified, variability in network analyzers at high impedances
    Allen Fischer
    • Measurement Procedure for Channel Qualification
      • Should cable be centered or against side of ferrite clamp?  
      • What is the variability due to positioning?
      • Cable routing to and away from clamp?
      • Variation due to cable OD vs Clamp ID?
    Allen Fischer
    • Measurement Tolerance and Uncertainty
    Bob Johnk
    • Measurement Uncertainty of the Calibration
    Werner Schaeffer
    • Gathering of Sufficient Data from Multiple Labs to Validate Recommendations
    • Data on Power, Data and Telecom Cables using Ferrite Channels
    • Data on Sensitivity to Variation in Cable Length to Remote Equipment
    • Ability to Use Self-Made Cables
    Mike Hill
    • EUTs with Many Cables 
      • Multiple Cables through a Clamp or 1 Clamp per Cable
    Werner Schaeffer


    • Physical Stability of Ferrite Magnetic Characteristics?
      (with rough handling, temperature, aging...?)
    Henry Paris
    • Coordination with CISPR 
    Don Heirman
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