IEC 62489-1:2010
(Main)Electroacoustics - Audio-frequency induction loop systems for assisted hearing - Part 1: Methods of measuring and specifying the performance of system components
Electroacoustics - Audio-frequency induction loop systems for assisted hearing - Part 1: Methods of measuring and specifying the performance of system components
IEC 62489-1:2010 applies to the components of audio-frequency induction-loop systems for assisted hearing. It may also be applied to such systems used for other purposes, as far as it is applicable. This standard is intended to encourage accurate and uniform presentation of manufacturers' specifications, which can be verified by standardized methods of measurement. It is intended for type testing. The components considered are the following:
- amplifiers;
- microphones;
- other components, such as playback equipment.
IEC 62489-1:2010 does not deal with safety, for which IEC 60065 applies. It also does not deal with EMC (Electromagnetic compatibility) and EMF (Electromagnetic fields, in the context of human exposure).
Electroacoustique - Systèmes de boucles d'induction audiofréquences pour améliorer l'audition - Partie 1: Méthodes de mesure et de spécification des performances des composants de systèmes
La CEI 62489-1:2010 s'applique aux composants des systèmes de boucles d'induction audiofréquences pour améliorer l'audition. Elle peut également être appliquée à ce type de systèmes utilisés à d'autres fins, si ladite application est possible. La présente norme est destinée à favoriser une présentation exacte et uniforme des spécifications des fabricants, qui peuvent être vérifiées par des méthodes de mesure normalisées. Elle est destinée à des essais de type. Les composants étudiés sont les suivants:
- amplificateurs;
- microphones;
- autres composants, tels que les équipements de reproduction.
La CEI 62489-1:2010 ne traite pas de la sécurité, pour laquelle la CEI 60065 s'applique. Elle ne traite pas non plus de la CEM (Compatibilité électromagnétique) ni des champs électromagnétiques (dans le contexte de l'exposition d'un sujet humain).
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IEC 62489-1 ®
Edition 1.0 2010-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electroacoustics – Audio-frequency induction loop systems for assisted
hearing –
Part 1: Methods of measuring and specifying the performance of system
components
Électroacoustique – Systèmes de boucles d’induction audiofréquences pour
améliorer l'audition –
Partie 1: Méthodes de mesure et de spécification des performances des
composants de systèmes
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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IEC 62489-1 ®
Edition 1.0 2010-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electroacoustics – Audio-frequency induction loop systems for assisted
hearing –
Part 1: Methods of measuring and specifying the performance of system
components
Électroacoustique – Systèmes de boucles d’induction audiofréquences pour
améliorer l'audition –
Partie 1: Méthodes de mesure et de spécification des performances des
composants de systèmes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
S
CODE PRIX
ICS 17.140.50 ISBN 978-2-88910-738-4
– 2 – 62489-1 © IEC:2010
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Terms and definitions .7
4 Rated values .7
5 Amplifiers .7
5.1 General .7
5.2 Rated conditions and standard measuring conditions .7
5.2.1 Rated conditions.7
5.2.2 Standard measurement conditions.8
5.3 Pre-conditioning .8
5.4 Characteristics to be specified, methods of measurement and presentation of
results .8
5.4.1 Rated source impedance .9
5.4.2 Rated source e.m.f. .9
5.4.3 Rated load.9
5.4.4 Rated temperature-limited output current.9
5.4.5 Rated time for delivery of rated distortion-limited output current .10
5.4.6 Rated total harmonic distortion of the output current.10
5.4.7 Maximum (distortion-limited) output current .10
5.4.8 Compliance voltage .10
5.4.9 Noise.11
5.4.10 Magnetic field strength .12
5.4.11 Loop dimensions .13
5.4.12 Frequency response .13
5.4.13 Automatic gain control and compression.13
5.4.14 Phase error of quadrature networks for phased loop arrays .14
5.4.15 Installation.14
5.4.16 Physical characteristics .14
6 Microphones.14
6.1 General .14
6.2 Characteristics to be specified, methods of measurement and presentation of
results .14
7 Other components .15
7.1 General .15
7.2 Characteristics to be specified, methods of measurement and presentation of
results .15
8 Measurement uncertainty .15
Annex A (informative) Automatic gain control and compression .16
Annex B (informative) Loop conductors and some typical impedance values.17
Annex C (informative) Microphones .20
Bibliography.21
Figure A.1 – Typical steady-state output/input characteristics .16
62489-1 © IEC:2010 – 3 –
Table B.1 – Typical loop characteristics.18
Table B.2 – Cable characteristics.19
– 4 – 62489-1 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROACOUSTICS –
AUDIO-FREQUENCY INDUCTION LOOP
SYSTEMS FOR ASSISTED HEARING –
Part 1: Methods of measuring and specifying
the performance of system components
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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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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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.
International Standard IEC 62489-1 has been prepared by IEC technical committee 29:
Electroacoustics.
The text of this standard is based on the following documents:
CDV Report on voting
29/667/CDV 29/668/RVC
Full information on the voting for the approval o
...
IEC 62489-1 ®
Edition 1.1 2014-12
CONSOLIDATED
VERSION
VERSION
CONSOLIDÉE
colour
inside
Electroacoustics – Audio-frequency induction loop systems for assisted
hearing –
Part 1: Methods of measuring and specifying the performance of system
components
Électroacoustique – Systèmes de boucles d’induction audiofréquences pour
améliorer l'audition –
Partie 1: Méthodes de mesure et de spécification des performances des
composants de systèmes
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.
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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
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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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Le premier dictionnaire en ligne de termes électroniques et
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électriques. Il contient plus de 30 000 termes et définitions en
Spécifications techniques, Rapports techniques et autres
anglais et en français, ainsi que les termes équivalents dans
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
14 langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
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Plus de 55 000 entrées terminologiques électrotechniques, en
La recherche avancée permet de trouver des publications IEC
en utilisant différents critères (numéro de référence, texte, anglais et en français, extraites des articles Termes et
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IEC 62489-1 ®
Edition 1.1 2014-12
CONSOLIDATED
VERSION
VERSION
CONSOLIDÉE
colour
inside
Electroacoustics – Audio-frequency induction loop systems for assisted
hearing –
Part 1: Methods of measuring and specifying the performance of system
components
Électroacoustique – Systèmes de boucles d’induction audiofréquences pour
améliorer l'audition –
Partie 1: Méthodes de mesure et de spécification des performances des
composants de systèmes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.50 ISBN 978-2-8322-2107-5
IEC 62489-1 ®
Edition 1.1 2014-12
REDLINE VERSION
VERSION REDLINE
colour
inside
Electroacoustics – Audio-frequency induction loop systems for assisted
hearing –
Part 1: Methods of measuring and specifying the performance of system
components
Électroacoustique – Systèmes de boucles d’induction audiofréquences pour
améliorer l'audition –
Partie 1: Méthodes de mesure et de spécification des performances des
composants de systèmes
– 2 – IEC 62489-1:2010
+AMD1:2014 CSV IEC 2014
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Rated values . 7
5 Amplifiers . 8
5.1 General . 8
5.2 Rated conditions and standard measuring conditions . 8
5.2.1 Rated conditions . 8
5.2.2 Standard measurement conditions . 9
5.3 Pre-conditioning . 9
5.4 Characteristics to be specified, methods of measurement and presentation of
results . 9
5.4.1 Rated source impedance . 9
5.4.2 Rated source e.m.f. . 9
5.4.3 Rated load . 10
5.4.4 Rated temperature-limited output current . 10
5.4.5 Rated time for delivery of rated distortion-limited output current . 10
5.4.6 Rated total harmonic distortion of the output current . 10
5.4.7 Maximum (distortion-limited) output current . 11
5.4.8 Compliance voltage . 11
5.4.9 Noise . 12
5.4.10 Magnetic field strength . 13
5.4.11 Loop dimensions . 13
5.4.12 Frequency response . 14
5.4.13 Automatic gain control and compression . 14
5.4.14 Phase error of quadrature networks for phased loop arrays . 15
5.4.15 Installation . 15
5.4.16 Physical characteristics . 15
6 Microphones . 16
6.1 General . 16
6.2 Characteristics to be specified, methods of measurement and presentation of
results . 16
9 Neck loops . 16
9.1 Input voltage . 16
9.1.1 Characteristic to be specified. 16
9.1.2 Method of measurement . 16
9.2 Input impedance . 16
9.2.1 Characteristic to be specified. 16
9.2.2 Method of measurement . 16
9.2.3 Recommended values . 16
9.3 Frequency response . 17
9.3.1 Characteristic to be specified. 17
9.3.2 Method of measurement . 17
9.3.3 Presentation of results . 17
9.3.4 Connector . 17
+AMD1:2014 CSV IEC 2014
10 Monitoring devices . 17
10.1 General . 17
10.2 Recommendations for fixed devices . 17
10.3 Recommendations for portable devices . 19
7 Other components . 19
7.1 General . 19
7.2 Characteristics to be specified, methods of measurement and presentation of
results . 19
8 Measurement uncertainty . 19
Annex A (informative) Automatic gain control and compression . 20
Annex B (informative) Loop conductors and some typical impedance values . 21
Annex C (informative) Microphones . 24
Annex D (informative) Neck loops . 25
Annex E (normative) Test jig for measuring the performance of neck loops . 26
Annex F (normative) Specifications for loop listeners and assistive listening devices
(ALDs) .
...
IEC 62489-1 ®
Edition 1.2 2017-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electroacoustics – Audio-frequency induction loop systems for assisted
hearing –
Part 1: Methods of measuring and specifying the performance of system
components
Électroacoustique – Systèmes de boucles d’induction audiofréquences pour
améliorer l'audition –
Partie 1: Méthodes de mesure et de spécification des performances des
composants de systèmes
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 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. 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 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
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details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) 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 IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.
Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient 20 000 termes et définitions en anglais
Spécifications techniques, Rapports techniques et autres
et en français, ainsi que les termes équivalents dans 16
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.
Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
La recherche avancée permet de trouver des publications IEC
65 000 entrées terminologiques électrotechniques, en anglais
en utilisant différents critères (numéro de référence, texte,
et en français, extraites des articles Termes et Définitions des
comité d’études,…). Elle donne aussi des informations sur les
publications IEC parues depuis 2002. Plus certaines entrées
projets et les publications remplacées ou retirées.
antérieures extraites des publications des CE 37, 77, 86 et
CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished
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Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
csc@iec.ch.
IEC 62489-1 ®
Edition 1.2 2017-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electroacoustics – Audio-frequency induction loop systems for assisted
hearing –
Part 1: Methods of measuring and specifying the performance of system
components
Électroacoustique – Systèmes de boucles d’induction audiofréquences pour
améliorer l'audition –
Partie 1: Méthodes de mesure et de spécification des performances des
composants de systèmes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.50 ISBN 978-2-8322-5103-4
IEC 62489-1 ®
Edition 1.2 2017-11
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Electroacoustics – Audio-frequency induction loop systems for assisted
hearing –
Part 1: Methods of measuring and specifying the performance of system
components
Électroacoustique – Systèmes de boucles d’induction audiofréquences pour
améliorer l'audition –
Partie 1: Méthodes de mesure et de spécification des performances des
composants de systèmes
– 2 – IEC 62489-1:2010+AMD1:2014
+AMD2:2017 CSV IEC 2017
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Rated values . 7
5 Amplifiers . 8
5.1 General . 8
5.2 Rated conditions and standard measuring conditions . 8
5.2.1 Rated conditions . 8
5.2.2 Standard measurement conditions . 9
5.3 Pre-conditioning . 9
5.4 Characteristics to be specified, methods of measurement and presentation of
results . 9
5.4.1 Rated source impedance . 9
5.4.2 Rated source e.m.f. . 9
5.4.3 Rated load . 10
5.4.4 Rated temperature-limited output current . 10
5.4.5 Rated time for delivery of rated distortion-limited output current . 10
5.4.6 Rated total harmonic distortion of the output current . 10
5.4.7 Maximum (distortion-limited) output current . 11
5.4.8 Compliance voltage . 11
5.4.9 Noise . 12
5.4.10 Magnetic field strength . 13
5.4.11 Loop dimensions . 13
5.4.12 Frequency response . 14
5.4.13 Automatic gain control and compression . 14
5.4.14 Phase error of quadrature networks for phased loop arrays . 15
5.4.15 Installation . 15
5.4.16 Physical characteristics . 15
6 Microphones . 16
6.1 General . 16
6.2 Characteristics to be specified, methods of measurement and presentation of
results . 16
7 Other components . 19
7.1 General . 19
7.2 Characteristics to be specified, methods of measurement and presentation of
results . 19
8 Measurement uncertainty . 19
9 Neck loops . 16
9.1 Input voltage . 16
9.1.1 Characteristic to be specified. 16
9.1.2 Method of measurement . 16
9.2 Input impedance . 16
9.2.1 Characteristic to be specified. 16
9.2.2 Method of measurement . 16
9.2.3 Recommended values . 16
+AMD2:2017 CSV IEC 2017
9.3 Frequency response . 17
9.3.1 Characteristic to be specified. 17
9.3.2 Method of measurement . 17
9.3.3 Presentation of results . 17
9.3.4 Connector . 17
10 Monitoring devices . 17
10.1 General . 17
10.2 Recommendations for fixed devices . 17
10.3 Recommendations for portable devices . 19
Annex A (informative) Automatic gain control and compression . 20
Annex B (informative) Loop conductors and some typical impedance values . 21
Annex C (informative) Microphones . 24
Annex D (normative) Neck loops . 25
Annex E (normative) Test jig for measuring the performance of neck loops . 27
Annex F (normative) Specification
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