VARIABILITY IN MEASUREMENT PROCEDURES FOR IGNITION NOISE

Measurements of electromagnetic radiation from automobiles do not always agree when made at different sites or at different times at the same site. A study has been made of SAE Standard J551c on measurement of such radiation from motor vehicles or other internal combustion devices (excluding aircraft) from 20 to 1000 MHz to determine whether portions of the standard are open to misinterpretation or may be imprecise enough to lead to variability in the findings. The report discusses some experiments to find the variability involved with antennas and test site configurations.

  • Corporate Authors:

    Stanford Research Institute

    333 Ravenswood Avenue
    Menlo Park, CA  USA  94025

    Motor Vehicles Manufacturers Association

    320 New Center Building
    Detroit, MI  USA  48202
  • Authors:
    • Shepherd, R A
    • Gaddie, J C
    • Nielson, D L
  • Publication Date: 1974-10

Media Info

  • Pagination: 126 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00093090
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: Final Rpt., MVMA-SRI-74-06
  • Files: TRIS
  • Created Date: Dec 3 1976 12:00AM