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eLibrary > BS EN 62489-2:2014 Electroacoustics. Audio-frequency induction loop systems for assisted hearing - Methods of calculating and measuring the low-frequency magnetic field emissions from the loop for assessing conformity with guidelines on limits for human e >

BS EN 62489-2:2014 Electroacoustics. Audio-frequency induction loop systems for assisted hearing - Methods of calculating and measuring the low-frequency magnetic field emissions from the loop for assessing conformity with guidelines on limits for human e, 2014

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BS EN 62489-2:2014 Electroacoustics. Audio-frequency induction loop systems for assisted hearing - Methods of calculating and measuring the low-frequency magnetic field emissions from the loop for assessing conformity with guidelines on limits for human e, 2014

30279550-VOR.pdf [Go to Page]
Foreword
Endorsement notice
Annex ZA (normative) Normative references to international publications with their corresponding European publications
30313813-VOR.pdf [Go to Page]
English [Go to Page]
CONTENTS
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Rated values
4 Situation regarding current standards
5 Configurations of loops [Go to Page]
5.1 Main types of configuration
5.2 General considerations
5.3 Large-area loops
5.4 Medium-area loops
5.5 Small-area loops
5.6 Solenoid antennas
6 Calculations [Go to Page]
6.1 General
6.2 Solenoid antennas
7 Measurements [Go to Page]
7.1 General
7.2 Input signal
7.3 Measuring instrument
8 Comparison of calculated or measured results with guidelines or limits
9 Meeting limits or guidelines
10 Measurement uncertainty
Annex A (informative) Rationale for this product-family magnetic field emission standard for audio-frequency induction-loop systems (AFILS) in the context of human exposure to non-ionizing radiation
Bibliography
Figures [Go to Page]
Figure 1 – An ear-hook induction transducer, with a BTE (behind the ear) hearing aid body for scale
Figure A.1 – ICNIRP magnetic field reference levels
Tables [Go to Page]
Table 1 – Basic restrictions
Table A.1 – Application to AFILS of Table 1 of IEC 62311:2007 "Characteristics and parameters of the equipment to be considered"
Français [Go to Page]
SOMMAIRE
AVANT-PROPOS
INTRODUCTION
1 Domaine d’application
2 Références normatives
3 Valeurs assignées
4 Situation concernant les normes actuelles
5 Configurations des boucles [Go to Page]
5.1 Principaux types de configuration
5.2 Considérations générales
5.3 Boucles de grande surface
5.4 Boucles de surface moyenne
5.5 Boucles de petite surface
5.6 Antennes solénoïdes
6 Calculs [Go to Page]
6.1 Généralités
6.2 Antennes solénoïdes
7 Mesures [Go to Page]
7.1 Généralités
7.2 Signal d’entrée
7.3 Instrument de mesure
8 Comparaison des résultats calculés ou mesurés avec les indications ou les limites
9 Respect des limites ou des indications
10 Incertitude de mesure
Annexe A (informative) Justifications pour cette norme de famille de produits relative aux émissions de champ magnétique, concernant les systèmes de boucle d’induction audiofréquences (AFILS) dans un contexte d’exposition humaine au rayonnement non ionisant
Bibliographie
Figures [Go to Page]
Figure 1 – Un transducteur d’induction auriculaire, avec un corps d'appareil de correction auditive contour d’oreille pour fournir une échelle
Figure A.1 – Niveaux de référence du champ magnétique ICNIRP
Tableaux [Go to Page]
Tableau 1 – Restrictions de base
Tableau A.1 – Tableau 1 de l'IEC 62311:2007, "Caractéristiques et paramètres de l’équipement à considérer", appliqués à l’AFILS [Go to Page]

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BS EN 62489-2:2014 Electroacoustics. Audio-frequency induction loop systems for assisted hearing - Methods of calculating and measuring the low-frequency magnetic field emissions from the loop for assessing conformity with guidelines on limits for human e, 2014

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