HD 450.4 S1:1984

Hearing aids - Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes

General information

Current stage: 99.60 Withdrawal effective Aug 1, 1998

Originator: CENELEC

Owner: CLC/SR 29 Electroacoustics

Type: Harmonization Document

Scope

This standard 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

Life cycle

NOW

WITHDRAWN
HD 450.4 S1:1984
99.60 Withdrawal effective
Aug 1, 1998

REVISED BY

WITHDRAWN
EN 60118-4:1998

Menu

HD 450.4 S1:1984

Hearing aids - Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes

General information

Scope

Life cycle

NOW

REVISED BY

Relations

Adopted from IEC 60118-4:1981 IDENTICAL