CISPR TR 16-4-3:2004
(Main)Specification for radio disturbance and immunity measuring apparatus and methods - Part 4-3: Uncertainties, statistics and limit modelling - Statistical considerations in the determination of EMC compliance of mass-produced products
Specification for radio disturbance and immunity measuring apparatus and methods - Part 4-3: Uncertainties, statistics and limit modelling - Statistical considerations in the determination of EMC compliance of mass-produced products
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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TECHNICAL CISPR
REPORT 16-4-3
Second edition
2004-05
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
Specification for radio disturbance and
immunity measuring apparatus and methods –
Part 4-3:
Uncertainties, statistics and limit modelling –
Statistical considerations in the determination
of EMC compliance of mass-produced products
Reference number
CISPR 16-4-3/TR:2004(E)
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TECHNICAL CISPR
REPORT 16-4-3
Second edition
2004-05
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
Specification for radio disturbance and
immunity measuring apparatus and methods –
Part 4-3:
Uncertainties, statistics and limit modelling –
Statistical considerations in the determination
of EMC compliance of mass-produced products
IEC 2004 Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including
photocopying and microfilm, without permission in writing from the publisher.
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– 2 – TR CISPR 16-4-3 IEC:2004(E)
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references.5
3 Terms, definitions and symbols .6
4 General requirements.6
4.1 Limits.6
4.2 Type testing approaches .6
5 Emission measurements.6
5.1 Test based on the non-central t-distribution.6
5.2 Test based on the binomial distribution .9
5.3 Test based on an additional acceptance limit .9
5.4 Additional sampling in case of non-compliance.10
5.5 Properti
...
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