BS EN 60118-4:1998被替代
Hearing aids. Magnetic field strength in audio-frequency induction loops for hearing aid purposes
出版：British Standards Institution
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基本信息
标准编号： BS EN 60118-4:1998
发布时间：1998/11/15 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：8
标准简介
Gives a standard value of magnetic field strength in audio-frequency induction loops for hearing aid purposes that will give an adequate signal-to-noise ratio without overloading the hearing aid.
标准备注
© British Standards Institution 2013
等同采用的国际标准
IEC 60118-4 Ed. 1.0 - Identical
