Improvement of radiated emission measurement reproducibility with VHF-LISN obtained from final results of international inter-laboratory comparison on termination control of power line

2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2015-05-26 DOI:10.1109/APEMC.2015.7175243

S. Okuyama, N. Kuwabara, K. Osabe, H. Muramatsu

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引用次数: 11

Abstract

At present, power supply impedance of radiated emission measurement site is not specified in any testing standards. In measurement of radiated emission from desktop equipment, noise emitted from power line of the EUT is a factor that worsens site correlations because the noise varies with the impedance between power line and the ground. Under such circumstances, VCCI developed VHF-LISN to stabilize power supply facilities for the purpose of improving the reproducibility of radiated emission measurement. To assess its effectiveness, an international inter-laboratory comparison program was carried out, provided with EUTs and termination control devices including the VHF-LISN to ensure identical setup across sites. Until February 2014, this international program was promoted at 16 sites in 9 countries. From the final results, we conclude that the VHF-LISN is the best device to improve the reproducibility of radiated emission measurement.

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电力线终端控制国际实验室间比较的最终结果表明VHF-LISN辐射发射测量再现性的提高

目前，在任何测试标准中都没有规定辐射发射测点的电源阻抗。在台式设备的辐射发射测量中，由于噪声随电力线与地之间的阻抗变化而变化，因此EUT电力线发出的噪声是使场地相关性恶化的一个因素。在这种情况下，VCCI开发了VHF-LISN来稳定供电设施，以提高辐射发射测量的再现性。为了评估其有效性，开展了一项国际实验室间比较计划，提供了eut和终端控制设备，包括VHF-LISN，以确保各站点的设置相同。截至2014年2月，该国际项目已在9个国家的16个地点推广。结果表明，VHF-LISN是提高辐射发射测量再现性的最佳装置。

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2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)

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