IEC 60118-4:1981 ED1

Methods of measurement of electro-acoustical characteristis of hearing aids. Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes

Publication date: 1 jan 1981

General information

Current stage: 99.60 Effective date: 27 tet 2006

Originator: IEC

Owner: TC 29

Type: International Standard

ICS: 17.140.50

Gjuha: anglisht frëngjisht spanjisht

Buying

Statusi: Revised

PDF - 2 261 Lekë

Paper - 2 261 Lekë

CD - 2 261 Lekë

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Scope

Applies to audio-frequency induction loop systems producing an alternating magnetic field and intended to provide an input signal for hearing aids operating with an induction pick-up coil. Specifies a standard value of magnetic field strength in audio-frequency induction loops for hearing aid purposes, such as will give an adequate signal-to-noise ratio without overloading the hearing aid.

Life cycle

NOW

WITHDRAWN
IEC 60118-4:1981 ED1
99.60 Withdrawal effective
27 tet 2006

CORRIGENDA / AMENDMENTS

WITHDRAWN
IEC 60118-4:1981/AMD1:1998 ED1

REVISED BY

WITHDRAWN
IEC 60118-4:2006 ED2