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# IEE Colloquium on Achieving an Acceptable Confidence Level in EMC Measurements

## Filter Results

Displaying Results 1 - 7 of 7
• ### Reproducibility and relevance in current injection testing

Publication Year: 1991, Page(s):5/1 - 5/4
| | PDF (156 KB)

Immunity testing by current injection onto system cables is an economically attractive alternative to radiated field testing, but correlation between the two has proved difficult. The basic characteristics of the two methods are reviewed as an introduction to consideration of the optimum circuit parameters for transformer-coupled injection. It is concluded that current injection' should not be re... View full abstract»

• ### The effects of wave polarisation on the performance of radiated emission measurement test sites

Publication Year: 1991, Page(s):4/1 - 4/7
| | PDF (232 KB)

Presents a simplified analysis of the coupling between an EUT (equipment under test) and the antenna for any radiated emission test site. The analysis illustrates the problems with inter-site comparison View full abstract»

• ### Radiated emission measurements in screened rooms; techniques for the reduction of calibration uncertainty

Publication Year: 1991, Page(s):2/1 - 210
| | PDF (292 KB)

Describes the measurement tools, and also a preliminary calibration technique which, in favourable circumstances, enables screened room measurements in the 1-30 MHz frequency range to be used to predict free-space radiation from the simulated device under test. The technique uses the spherical dipole as a calibration device View full abstract»

• ### The effects of variations in wave impedance in the coupling of large lossy bodies to external electromagnetic fields

Publication Year: 1991, Page(s):6/1 - 6/5
Cited by:  Papers (1)
| | PDF (156 KB)

Describes a theoretical analysis of the illumination of a hollow, conductive object containing a wire by a non-planar wave. Much EMC testing is performed at antenna-test object separation distances that are small compared to the wavelength. The authors show that such near-field' (Fresnel zone) testing produces coupling responses markedly different from that encountered due to plane wave (where th... View full abstract»

• ### Reducing the uncertainty in EMC measurements due to chamber characteristics and system mismatch

Publication Year: 1991, Page(s):3/1 - 3/4
| | PDF (196 KB)

Examines the sources of uncertainty in EMC measurements carried out in the EMC Test House Facility at British Aerospace (Dynamics) Limited, Filton. The dominant sources of error are identified and ways of reducing these in order to minimise overall uncertainty are discussed, concentrating on radiated emissions and radiated susceptibility measurements in semi-anechoic chambers View full abstract»

• ### Risk assessment for BCI testing

Publication Year: 1991, Page(s):7/1 - 7/5
Cited by:  Papers (1)
| | PDF (268 KB)

A system-level test method has been devised that uses all measured transfer function information, thus giving statistical information on the possibility of over or under testing a component. This statistical information, comprising mean and standard deviation envelope levels and the probability distribution, may be included in the software that drives the bulk current injection test equipment. Thi... View full abstract»

• ### IEE Colloquium on `Achieving an Acceptable Confidence Level in EMC Measurements' (Digest No.117)

Publication Year: 1991
| | PDF (744 KB)

The following topics were dealt with: radiated emission measurements; reducing measurement uncertainty; current injection testing; and test object coupling to EM fields View full abstract»