NF C97-624:1998
Hearing aids. Part 4 : magnetic field strength in audio-frequency induction loops for hearing aid purposes.
- Standard No.
- NF C97-624:1998
- Release Date
- 1998
- Published By
- Association Francaise de Normalisation
- Status
- 2007-03
- Replace By
- NF C97-624:2007
- Latest
- NF C97-624:2015
- Replace
- NF C97-610:1986
NF C97-624:1998 history
- 0000 NF C97-613:1997
- 1986 NF C97-610:1986 Hearing aids. Definitions and measuring methods.
