I.S. EN 60118-4:2015
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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ELECTROACOUSTICS - HEARING AIDS - PART 4: INDUCTION-LOOP SYSTEMS FOR HEARING AID PURPOSES - SYSTEM PERFORMANCE REQUIREMENTS
Hardcopy , PDF
23-11-2019
English
01-01-2015
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
National Foreword
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Using components of a sound system in an induction-loop
system
6 Meters and test signals
7 Magnetic background noise level of the installation site
8 Characteristics to be specified, methods of measurement
and requirements
9 Small-volume systems
10 Setting up (commissioning) the system
Annex A (informative) - Systems for small useful magnetic
field volumes
Annex B (informative) - Measuring equipment
Annex C (informative) - Provision of information
Annex D (informative) - Measuring speech signals
Annex E (informative) - Basic theory and practice of audio-frequency
induction-loop systems
Annex F (informative) - Effects of metal in the building structure
on the magnetic field
Annex G (informative) - Calibration of field-strength meters
Annex H (informative) - Effect of the aspect ratio of the loop on
the magnetic field strength
Annex I (informative) - Overspill of magnetic field from an
induction-loop system
Bibliography
Annex ZA (normative) - Normative references to
international publications with their
corresponding European publications
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