Abstract
Voluntary EMC Laboratory Accreditation Center (VLAC) has organized Proficiency Testing (PT) program of EMI measurement seven times since 2005. In the PT programs, both the radiated emission test and the conducted emission test are instructed to assess the technical proficiecy of the participated test laboratories. To evaluate the data, a deviation from the median value of all submitted data is considered in addition of Z-score specified in the ISO/IEC 17043. In this article, the adoption of two judgment criteria was reviewed from the actual PT data and the standards compliance uncertainty of the radiated emission test specified to the PT program. As the results, we concluded we should request to investigate to the laboratory when the data indicated the following both conditions; more than 3 |Z-score| and the more than 6dB difference from the median value of all submitted data.
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