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GB/T 11454-1989 English PDF

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GB/T 11454-1989: Magnetic field strength in audio-frequency induction loops for hearing aid purposes
Status: Obsolete
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 11454-1989English199 Add to Cart 2 days [Need to translate] Magnetic field strength in audio-frequency induction loops for hearing aid purposes Obsolete GB/T 11454-1989

PDF similar to GB/T 11454-1989


Standard similar to GB/T 11454-1989

GB/T 12631   GB/T 41180   

Basic data

Standard ID GB/T 11454-1989 (GB/T11454-1989)
Description (Translated English) Magnetic field strength in audio-frequency induction loops for hearing aid purposes
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard L31
Classification of International Standard 17.140
Word Count Estimation 4,422
Date of Issue 6/29/1989
Date of Implementation 4/1/1990
Regulation (derived from) Announcement of Newly Approved National Standards 2010 No. 4 (No. 159 overall)
Issuing agency(ies) State Bureau of Technical Supervision
Summary This Standard specifies a hearing aid with audio induction loop system the magnetic field strength requirements, the purpose is to ensure the provision of appropriate signal to noise ratio in the case of a hearing aid, but contained. The standard also specifies the minimum acceptable frequency range required for clarity.

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