IEC 60118-4:1981
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Methods of measurement of electro-acoustical characteristis of hearing aids. Part 4: Magnetic field strength in audio-frequency induction loops for hearing aid purposes
Hardcopy , PDF
01-01-1981
12-09-2022
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.
| Committee |
TC 29
|
| DocumentType |
Standard
|
| Pages |
12
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| AS 60118.4-2007 | Identical |
| AS 1088.4-1987 | Identical |
| UNE-EN 60118-4:2001 | Identical |
| UNE 20603-4:1982 | Identical |
| CEI EN 60118-4:1999-09 | Identical |
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