This Technical Report deals with statistical considerations in the determination of EMC compliance of mass-produced products. The reasons for such statistical considerations are: a) that the abatement of interference aims that the majority of the appliances to be approved shall not cause interference; b) that the CISPR limits should be suitable for the purpose of type approval of mass-produced appliances as well as approval of single-produced appliances; c) that to ensure compliance of mass-produced appliances with the CISPR limits, statistical techniques have to be applied; d) that it is important for international trade that the limits shall be interpreted in the same way in every country; e) that the National Committees of the IEC which collaborate in the work of the CISPR should seek to secure the agreement of the competent authorities in their countries. Therefore, this part of CISPR 16 specifies requirements and provides guidance based on statistical techniques. EMC compliance of mass-produced appliances should be based on the application of statistical techniques that must reassure the consumer, with an 80 % degree of confidence, that 80 % of the appliances of a type being investigated comply with the emission or immunity requirements.
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