Problems with radiated-emission testing at 3 m distance according to CISPR 11 and CISPR 22

Author

Garn, H.F. ; Zink, E. ; Kremser, R.

Author_Institution

Austrian Res. Centre Seibersdorf, Austria

fYear

1993

fDate

9-13 Aug 1993

Firstpage

216

Lastpage

221

Abstract

The standards CISPR 11 and CISPR 22 specify different extrapolation factors for radiated-emission test data measured at 3-m distance. The authors have experimentally determined extrapolation factors for a personal computer that radiated the signal from a comb generator via its wiring harness and for a battery-powered reference radiator. Results show that factors can vary between -18 dB and -1 dB. It is concluded that, based on the present specifications, compliance tests at 3-m distance should not be allowed

Keywords

computerised instrumentation; electromagnetic interference; measurement standards; microcomputer applications; 3 m; CISPR 11; CISPR 22; battery-powered reference radiator; comb generator; compliance tests; extrapolation factors; measurement standards; personal computer; radiated-emission test data; wiring harness; Clamps; Electromagnetic compatibility; Electromagnetic measurements; Electromagnetic radiation; Extrapolation; Frequency; Microcomputers; Signal generators; Testing; Wiring;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1993. Symposium Record., 1993 IEEE International Symposium on

Conference_Location

Dallas, TX

Print_ISBN

0-7803-1304-6

Type

conf

DOI

10.1109/ISEMC.1993.473744

Filename

473744