Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-3: Methods of measurement of disturbances and immunity - Radiated disturbance measurements

CISPR 16-2-3:2010 specifies the methods of measurement of radiated disturbance phenomena in the frequency range of 9 kHz to 18 GHz. The aspects of measurement uncertainty are specified in CISPR 16-4-1 and CISPR 16-4-2. This third edition of CISPR 16-2-3 cancels and replaces the second edition published in 2006. It is a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- addition of the measurand for radiated emissions measurements in an OATS and a SAC in the range of 30 MHz to 1 000 MHz, and
- addition of a new normative annex on the determination of suitability of spectrum analysers for compliance tests. Also, numerous maintenance items are addressed to make the standard current with respect to other parts of the CISPR 16 series. CISPR 16-2-3:2010 has the status of a basic EMC publication in accordance with IEC Guide 107, Electromagnetic compatibility - Guide to the drafting of electromagnetic compatibility publications.

Spécifications des méthodes et des appareils de mesure des perturbations radioélectriques et de l'immunité aux perturbations radioélectriques - Partie 2-3: Méthodes de mesure des perturbations et de l'immunité - Mesures des perturbations rayonnées

La CISPR 16-2-3:2010 spécifie les méthodes de mesure du champ perturbateur rayonné, dans la gamme de fréquences de 9 kHz à 18 GHz. Les aspects de l'incertitude de mesure sont spécifiés dans les normes CISPR 16-4-1 et CISPR 16-4-2. Cette troisième édition de la CISPR 16-2-3 annule et remplace la deuxième édition parue en 2006, et constitue une révision technique. Cette édition contient les modifications techniques significatives suivantes par rapport à l'édition précédente:
- ajout du mesurande pour les mesures des émissions rayonnées dans un OATS (Site d'essai en espace libre) et une SAC (Chambre semi-anéchoïque) dans la gamme de 30 MHz à 1 000 MHz et
- ajout d'une nouvelle annexe normative concernant la détermination de la pertinence des analyseurs de spectre pour les essais de conformité. Un grand nombre de points relatifs à la maintenance sont également traités afin d'adapter la norme aux autres parties de la série CISPR 16. La CISPR 16-2-3 a le statut de publication fondamentale en CEM en accord avec le Guide 107 de la CEI, Compatibilité électromagnétique - Guide pour la rédaction des publications sur la compatibilité électromagnétique.

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Published
Publication Date
13-Mar-2014
Current Stage
DELPUB - Deleted Publication
Completion Date
15-Sep-2016
Ref Project

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CISPR 16-2-3:2010 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-3: Methods of measurement of disturbances and immunity - Radiated disturbance measurements Released:4/27/2010 Isbn:9782889100132
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CISPR 16-2-3:2010+AMD1:2010+AMD2:2014 CSV - Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-3: Methods of measurement of disturbances and immunity - Radiated disturbance measurements Released:3/14/2014 Isbn:9782832214763
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CISPR 16-2-3 ®
Edition 3.0 2010-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 2-3: Methods of measurement of disturbances and immunity – Radiated
disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l’immunité aux perturbations radioélectriques –
Partie 2-3: Méthodes de mesure des perturbations et de l'immunité – Mesures
des perturbations rayonnées
All rights reserved. Unless otherwise specified, 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 either IEC or
IEC's member National Committee in the country of the requester.
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please contact the address below or your local IEC member National Committee for further information.

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CISPR 16-2-3 ®
Edition 3.0 2010-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 2-3: Methods of measurement of disturbances and immunity – Radiated
disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l’immunité aux perturbations radioélectriques –
Partie 2-3: Méthodes de mesure des perturbations et de l'immunité – Mesures
des perturbations rayonnées
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XD
CODE PRIX
ICS 33.100.10; 33.100.20 ISBN 978-2-88910-013-2
– 2 – CISPR 16-2-3 © IEC:2010
CONTENTS
FOREWORD.6
1 Scope.8
2 Normative references .8
3 Terms and definitions .9
4 Types of disturbance to be measured .13
4.1 General .13
4.2 Types of disturbance .13
4.3 Detector functions .14
5 Connection of measuring equipment.14
6 General measurement requirements and conditions .14
6.1 General .14
6.2 Disturbance not produced by the equipment under test .14
6.2.1 General .14
6.2.2 Compliance (conformity assessment) testing .14
6.3 Measurement of continuous disturbance.15
6.3.1 Narrowband continuous disturbance .15
6.3.2 Broadband continuous disturbance.15
6.3.3 Use of spectrum analyzers and scanning receivers.15
6.4 Operating conditions of the EUT.15
6.4.1 Normal load conditions .15
6.4.2 The time of operation.15
6.4.3 Running-in time .15
6.4.4 Supply .16
6.4.5 Mode of operation.16
6.5 Interpretation of measuring results .16
6.5.1 Continuous disturbance .16
6.5.2 Discontinuous disturbance.16
6.6 Measurement times and scan rates for continuous disturbance .16
6.6.1 General .16
6.6.2 Minimum measurement times .17
6.6.3 Scan rates for scanning receivers and spectrum analyzers.17
6.6.4 Scan times for stepping receivers .18
6.6.5 Strategies for obtaining a spectrum overview using the peak detector .19
7 Measurement of radiated disturbances .22
7.1 Introductory remarks .22
7.2 Loop-antenna system measurements (9 kHz to 30 MHz) .23
7.2.1 General .23
7.2.2 General measurement method.23
7.2.3 Test environment.24
7.2.4 Configuration of the equipment under test .24
7.2.5 Measurement uncertainty for LAS.25
7.3 Open-area test site or semi-anechoic chamber measurements (30 MHz to
1 GHz) .25
7.3.1 Measurand .25
7.3.2 Test site requirements .26
7.3.3 General measurement method.26

CISPR 16-2-3 © IEC:2010 – 3 –
7.3.4 Measurement distance.27
7.3.5 Antenna height variation.27
7.3.6 Product specification details .27
7.3.7 Measurement instrumentation.29
7.3.8 Field-strength measurements on other outdoor sites.29
7.3.9 Measurement uncertainty for OATS and SAC .29
7.4 Fully-anechoic room measurements (30 MHz to 1 GHz) .30
7.4.1 Test set-up and site geometry .30
7.4.2 EUT position.32
7.4.3 Cable layout and termination .33
7.4.4 Measurement uncertainty for FAR .34
7.5 Radiated emission measurement method (30 MHz to 1 GHz) and radiated
immunity test method (80 MHz to 1 GHz) with common test set-up in semi-
anechoic chamber .34
7.5.1 Applicability .34
7.5.2 EUT perimeter definition and antenna-to-EUT separation distance .34
7.5.3 Uniform test volume.35
7.5.4 Specifications for EUT set-up in common emissions/immunity test
setup .36
7.5.5 Measurement uncertainty for common emission/immunity set-up and
method .41
7.6 Fully-anechoic room and absorber-lined OATS/SAC measurements (1 GHz
to 18 GHz).41
7.6.1 Quantity to measure .41
7.6.2 Measurement distance.41
7.6.3 Set-up and operating conditions of the equipment under test (EUT).41
7.6.4 Measurement site .42
7.6.5 Measurement instrumentation.42
7.6.6 Measurement procedure .42
7.6.7 Measurement uncertainty for FAR .49
7.7 In situ measurements (9 kHz to 18 GHz) .49
7.7.1 Applicability of and preparation for in situ measurements .49
7.7.2 Field-strength measurements in situ in the frequency range 9 kHz to
30 MHz.
...


CISPR 16-2-3 ®
Edition 3.1 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 2-3: Methods of measurement of disturbances and immunity – Radiated
disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l’immunité aux perturbations radioélectriques –
Partie 2-3: Méthodes de mesure des perturbations et de l'immunité –
Mesures des perturbations rayonnées

All rights reserved. Unless otherwise specified, 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 either IEC or
IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
ƒ Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
ƒ Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
ƒ Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: csc@iec.ch
Tél.: +41 22 919 02 11
Fax: +41 22 919 03 00
CISPR 16-2-3 ®
Edition 3.1 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 2-3: Methods of measurement of disturbances and immunity – Radiated
disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l’immunité aux perturbations radioélectriques –
Partie 2-3: Méthodes de mesure des perturbations et de l'immunité –
Mesures des perturbations rayonnées

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CR
CODE PRIX
ICS 33.100.10; 33.100.20 ISBN 978-2-88912-123-6
– 2 – CISPR 16-2-3 © IEC:2010+A1:2010
CONTENTS
FOREWORD.7
1 Scope.10
2 Normative references .10
3 Terms and definitions .11
4 Types of disturbance to be measured .15
4.1 General .15
4.2 Types of disturbance .16
4.3 Detector functions .16
5 Connection of measuring equipment.16
6 General measurement requirements and conditions .17
6.1 General .17
6.2 Disturbance not produced by the equipment under test .17
6.2.1 General .17
6.2.2 Compliance (conformity assessment) testing .17
6.3 Measurement of continuous disturbance.17
6.3.1 Narrowband continuous disturbance .17
6.3.2 Broadband continuous disturbance.17
6.3.3 Use of spectrum analyzers and scanning receivers.18
6.4 Operating conditions of the EUT.18
6.4.1 Normal load conditions .18
6.4.2 The time of operation.18
6.4.3 Running-in time .18
6.4.4 Supply .18
6.4.5 Mode of operation.18
6.5 Interpretation of measuring results .18
6.5.1 Continuous disturbance .18
6.5.2 Discontinuous disturbance.19
6.5.3 Measurement of the duration of disturbance .19
6.6 Measurement times and scan rates for continuous disturbance .19
6.6.1 General .19
6.6.2 Minimum measurement times .19
6.6.3 Scan rates for scanning receivers and spectrum analyzers.20
6.6.4 Scan times for stepping receivers .21
6.6.5 Strategies for obtaining a spectrum overview using the peak detector .22
6.6.6 Timing considerations using FFT-based instruments .27
7 Measurement of radiated disturbances .30
7.1 Introductory remarks .30
7.2 Loop-antenna system measurements (9 kHz to 30 MHz) .31
7.2.1 General .31
7.2.2 General measurement method.31
7.2.3 Test environment.32
7.2.4 Configuration of the equipment under test .33
7.2.5 Measurement uncertainty for LAS.33
7.3 Open-area test site or semi-anechoic chamber measurements (30 MHz to
1 GHz) .33
7.3.1 Measurand .33

CISPR 16-2-3 © IEC:2010+A1:2010 – 3 –
7.3.2 Test site requirements .34
7.3.3 General measurement method.34
7.3.4 Measurement distance.35
7.3.5 Antenna height variation.35
7.3.6 Product specification details .35
7.3.7 Measurement instrumentation.37
7.3.8 Field-strength measurements on other outdoor sites.37
7.3.9 Measurement uncertainty for OATS and SAC .37
7.4 Fully-anechoic room measurements (30 MHz to 1 GHz) .38
7.4.1 Test set-up and site geometry .38
7.4.2 EUT position.40
7.4.3 Cable layout and termination .41
7.4.4 Measurement uncertainty for FAR .42
7.5 Radiated emission measurement method (30 MHz to 1 GHz) and radiated
immunity test method (80 MHz to 1 GHz) with common test set-up in semi-
anechoic chamber .42
7.5.1 Applicability .42
7.5.2 EUT perimeter definition and antenna-to-EUT separation distance .42
7.5.3 Uniform test volume.43
7.5.4 Specifications for EUT set-up in common emissions/immunity test
setup .44
7.5.5 Measurement uncertainty for common emission/immunity set-up and
method .49
7.6 Fully-anechoic room and absorber-lined OATS/SAC measurements (1 GHz
to 18 GHz).49
7.6.1 Quantity to measure .49
7.6.2 Measurement distance.49
7.6.3 Set-up and operating conditions of the equipment under test (EUT).49
7.6.4 Measurement site .50
7.6.5 Measurement instrumentation.50
7.6.6 Measurement procedure .50
7.6.7 Measurement uncertainty for FAR .57
7.7 In situ measurements (9 kHz to 18 GHz) .5
...


CISPR 16-2-3 ®
Edition 3.2 2014-03
CONSOLIDATED
VERSION
VERSION
CONSOLIDÉE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 2-3: Methods of measurement of disturbances and immunity – Radiated
disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l’immunité aux perturbations radioélectriques –
Partie 2-3: Méthodes de mesure des perturbations et de l'immunité –
Mesures des perturbations rayonnées

All rights reserved. Unless otherwise specified, 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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 14
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 55 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
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Centre: csc@iec.ch.
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Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
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CISPR 16-2-3 ®
Edition 3.2 2014-03
CONSOLIDATED
VERSION
VERSION
CONSOLIDÉE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM

Specification for radio disturbance and immunity measuring apparatus and

methods –
Part 2-3: Methods of measurement of disturbances and immunity – Radiated

disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations

radioélectriques et de l’immunité aux perturbations radioélectriques –

Partie 2-3: Méthodes de mesure des perturbations et de l'immunité –

Mesures des perturbations rayonnées

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.10; 33.100.20 ISBN 978-2-8322-1476-3

CISPR 16-2-3 ®
Edition 3.2 2014-03
REDLINE VERSION
VERSION REDLINE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 2-3: Methods of measurement of disturbances and immunity – Radiated
disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l’immunité aux perturbations radioélectriques –
Partie 2-3: Méthodes de mesure des perturbations et de l'immunité –
Mesures des perturbations rayonnées

– 2 – CISPR 16-2-3:2010
+A1:2010+A2:2014© IEC:2014
CONTENTS
FOREWORD . 7
INTRODUCTION TO AMENDMENT 1 . 9
1 Scope . 10
2 Normative references . 10
3 Terms and, definitions and abbreviations . 11
4 Types of disturbance to be measured . 16
4.1 General . 16
4.2 Types of disturbance . 16
4.3 Detector functions . 17
5 Connection of measuring equipment . 17
6 General measurement requirements and conditions . 17
6.1 General . 17
6.2 Disturbance not produced by the equipment under test . 17
6.2.1 General . 17
6.2.2 Compliance (conformity assessment) testing . 18
6.3 Measurement of continuous disturbance . 18
6.3.1 Narrowband continuous disturbance . 18
6.3.2 Broadband continuous disturbance . 18
6.3.3 Use of spectrum analyzers and scanning receivers . 18
6.4 Operating conditions of the EUT arrangement and measurement conditions . 18
6.4.1 Normal load conditions General arrangement of the EUT. 18
6.4.2 The time of Operation of the EUT . 21
6.4.3 Running-in time EUT time of operation . 21
6.4.4 Supply EUT running-in time . 21
6.4.5 Mode of operation EUT supply . 21
6.4.6 EUT mode of operation . 21
6.4.7 Operation of multifunction equipment. 21
6.4.8 Determination of arrangement(s) causing maximum emissions . 22
6.4.9 Recording of measurements . 22
6.5 Interpretation of measuring results . 22
6.5.1 Continuous disturbance . 22
6.5.2 Discontinuous disturbance . 23
6.5.3 Measurement of the duration of disturbance . 23
6.6 Measurement times and scan rates for continuous disturbance . 23
6.6.1 General . 23
6.6.2 Minimum measurement times . 23
6.6.3 Scan rates for scanning receivers and spectrum analyzers . 24
6.6.4 Scan times for stepping receivers . 25
6.6.5 Strategies for obtaining a spectrum overview using the peak detector . 26
6.6.6 Timing considerations using FFT-based instruments . 30
7 Measurement of radiated disturbances . 34
7.1 Introductory remarks . 34
7.2 Loop-antenna system measurements (9 kHz to 30 MHz) . 35
7.2.1 General . 35
7.2.2 General measurement method . 35
7.2.3 Test environment . 36

+A1:2010+A2:2014© IEC:2014
7.2.4 Configuration of the equipment under test . 37
7.2.5 Measurement uncertainty for LAS . 37
7.3 Open-area test site or semi-anechoic chamber measurements (30 MHz to
1 GHz) . 37
7.3.1 Measurand . 37
7.3.2 Test site requirements . 38
7.3.3 General measurement method . 38
7.3.4 Measurement distance. 39
7.3.5 Antenna height variation . 39
7.3.6 Product specification details . 39
7.3.7 Measurement instrumentation . 43
7.3.8 Field-strength measureme
...

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