DIN IEC 60118-4:1991-11
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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HEARING AIDS; MAGNETIC FIELD STRENGTH IN AUDIO FREQUENCY INDUCTION LOOPS FOR HEARING AID PURPOSES
Published date
12-01-2013
Superseded date
01-08-1999
Superseded by
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Applies to audio frequency induction loop system 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.
| DocumentType |
Standard
|
| PublisherName |
German Institute for Standardisation (Deutsches Institut für Normung)
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| HD 450.4 : 200S1 | Corresponds |
| IEC 60118-4:2014+AMD1:2017 CSV | Similar to |
| HD 450.4 : 200S1 | Identical |
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