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IEC 60651:1979/AMD1:1993

IEC 60651:1979/AMD1:1993

Amendment 1 - Sound level meters

Amendement 1 - Sonomètres

Date:
2003-04-17 /Anulada
Summary (English):
Contains changes to the clauses of IEC 651 and a new appendix D with equations for design-goal frequency weightings.
Summary (French):
Relaciones con otras normas IEC

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