CISPR TR 16-4-3:2003

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 contains recommendations on statistics of disturbance complaints, on the significance of CISPR limits, and specific reports. Over the years, the CISPR prepared a number of recommendations and reports that have significant technical merit but were not generally available. Reports and recommendations were for some time published in CISPR 7 and 8. At its meeting in Campinas, Brazil, in 1988, subcommittee A agreed on the table of contents of the first edition of part 3 and to publish the reports for posterity by giving the reports a permanent place in part 3. In 2003, the relevant clauses on statistics were transferred to CISPR 16-4-3. CISPR 16-3 has been reorganised into 4 parts, to accommodate growth and easier maintenance. This first edition of CISPR 16-4-3, together with CISPR 16-4-1, CISPR 16-4-4 and the second edition of CISPR 16-3, cancels and replaces the first edition of CISPR 16-3, published in 2000, and its amendment 1 (2002). It contains the relevant clauses of CISPR 16-3 without technical changes.

General Information

• Status: Published
• Publication Date: 25-Nov-2003
• ICS: 33.100.10 - Emission
• ICS: 33.100.20 - Immunity
• Technical Committee: CIS/A - Radio-interference measurements and statistical methods
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 24-May-2004

Relations

• Replaces: CISPR TR 16-3:2000 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 3: Reports and recommendations of CISPR
• Effective Date: 05-Sep-2023
• Replaces: CISPR TR 16-3:2000/AMD1:2002 - Amendment 1 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 3: Reports and recommendations of CISPR
• Effective Date: 05-Sep-2023
• Revised: CISPR TR 16-4-3:2004 - 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
• Effective Date: 05-Sep-2023

Standards Content (Sample)

TECHNICAL CISPR
REPORT 16-4-3
First edition
2003-11
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:2003(E)
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

Consolidated editions
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edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the

base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
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TECHNICAL CISPR
REPORT 16-4-3
First edition
2003-11
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 2003 ⎯ 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.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
T
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – CISPR 16-4-3/TR © IEC:2003(E)

CONTENTS
FOREWORD.3

INTRODUCTION.5

TABLE RECAPITULATING CROSS-REFERENCES .6

1 Scope.7

2 Normative references.7

3 Definitions.7
4 Recommendation 46/2: Significance of a CISPR limit .10
5 Report 48: Statistical considerations in the determination of limits of radio
interference .13
5.1 Introduction.13
5.2 Tests based on the non-central t-distribution (sampling by variables) .13
5.3 Tests based on the binomial distribution (sampling by attributes) .17
5.4 Bibliography.18
6 Report 59: An analytical assessment of statistical parameters of radio disturbance
in the case of an incompletely defined sample.20
Appendix to Report 59.24

CISPR 16-4-3/TR © IEC:2003(E) – 3 –

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
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

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
This first edition of CISPR 16-4-3, together with CISPR 16-4-1, CISPR 16-4-4 and the second
edition of CISPR 16-3, cancels and replaces the first edition of CISPR 16-3, published in
2000, and its amendment 1 (2002). It contains the relevant clauses of CISPR 16-3 without
technical changes.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A bilingual version of this publication may be issued at a later date.

– 4 – CISPR 16-4-3/TR © IEC:2003(E)

The committee has decided that the contents of this publication will remain unchanged until

2004. At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or

• amended.
The text of this publication is based on the following documents:

Recommendation 46/1 – p/o CISPR. 11, 1990; Report 48 – p/o CISPR 8B, 1975; Report 59:
CIS/A(Sec)58 + CIS/A(Sec)58A, 1983.

CISPR 16-4-3/TR © IEC:2003(E) – 5 –

INTRODUCTION
CISPR 16-1, CISPR 16-2, CISPR 16-3 and CISPR 16-4 have been reorganised into 14 parts,

to accommodate growth and easier maintenance. The new parts have also been renumbered.

See the list given below.
Old CISPR 16 publications New CISPR 16 publications

CISPR 16-1-1 Measuring apparatus

CISPR 16-1-2 Ancillary equipment – Conducted disturbances
Radio disturbance
and immunity
Ancillary equipment – Disturbance power
CISPR 16-1-3
CISPR 16-1
measuring
apparatus
Ancillary equipment – Radiated disturbances
CISPR 16-1-4
Antenna calibration test sites for 30 MHz to
CISPR 16-1-5
1 000 MHz
CISPR 16-2-1 Conducted disturbance measurements
Methods of
CISPR 16-2-2 Measurement of disturbance power
measurement of
CISPR 16-2
disturbances and
CISPR 16-2-3 Radiated disturbance measurements
immunity
CISPR 16-2-4
Immunity measurements
CISPR 16-3 CISPR technical reports
CISPR 16-4-1 Uncertainties in standardised EMC tests
Reports and
CISPR 16-3 recommendations Measurement instrumentation uncertainty
CISPR 16-4-2
of CISPR
Statistical considerations in the
CISPR 16-4-3
determination of EMC compliance of mass-
produced products
Statistics of complaints and a model for the
Uncertainty in EMC
CISPR 16-4 CISPR 16-4-4
calculation of limits
measurements
More specific information on the relation between the ‘old’ CISPR 16-3 and the present ‘new’
CISPR 16-4-3 is given in the table after this introduction (TABLE RECAPITULATING CROSS
REFERENCES).
Measurement instrumentation specifications are given in five new parts of CISPR 16-1, while
the methods of measurement are covered now in four new parts of CISPR 16-2. Various
reports with further information and background on CISPR and radio disturbances in general
are given in CISPR 16-3. CISPR 16-4 contains information related to uncertainties, statistics
and limit modelling.
CISPR 16-4 consists of the following parts, under the general title Specification for radio
disturbance and immunity measuring apparatus and methods - Uncertainties, statistics and
limit modelling:
• Part 4-1: Uncertainties in standardised EMC tests,
• Part 4-2: Uncertainty in EMC measurements,
• Part 4-3: Statistical considerations in the determination of EMC compliance of mass-
produced products,
• Part 4-4: Statistics of complaints and a model for the calculation of limits.

– 6 – CISPR 16-4-3/TR © IEC:2003(E)

TABLE RECAPITULATING CROSS-REFERENCES

First edition of CISPR 16-3 First edition of CISPR 16-4-3

Clauses, subclauses Clauses
1.1 1
1.2 2
1.3 3
2.3 4
2.2 5
2.4 6
CISPR 16-4-3/TR © IEC:2003(E) – 7 –

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

1 Scope
This part of CISPR 16 contains recommendations on statistics of disturbance complaints, on
the significance of CISPR limits, and specific reports.
Over the years, the CISPR prepared a number of recommendations and reports that have
significant technical merit but were not generally available. Reports and recommendations
were for some time published in CISPR 7 and 8.
At its meeting in Campinas, Brazil, in 1988, subcommittee A agreed on the table of contents
of the first edition of part 3 and to publish the reports for posterity by giving the reports a
permanent place in part 3. In 2003, the relevant clauses on statistics were transferred to
CISPR 16-4-3.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
CISPR 16-1:2003 (all parts), Specification for radio disturbance and immunity measuring
apparatus and methods – Radio disturbance and immunity measuring apparatus
CISPR 16-2:2003 (all parts), Specification for radio disturbance and immunity measuring
apparatus and methods – Methods of measurement of disturbances and immunity
CISPR 16-3:2003 Specification for radio disturbance and immunity measuring apparatus and
methods – Part 3: CISPR technical reports
CISPR 16-4-1:2003, Specification for radio disturbance and immunity measuring apparatus

and methods – Part 4-1: Uncertainties, stat
...