(812) 309-78-59
(495) 223-46-76
IEC 60268-17:1990 ed1.0
Sound system equipment. Part 17: Standard volume indicators
11 стр.
Действует
Электронный (pdf)Печатная копия
65.52 CHF (включая НДС 20%)
Разработчик:
Зарубежные/IEC
ICS:
33.160.50 Auxiliaries. Including headphones, loudspeakers, microphones, etc. / Вспомогательные устройства. Включая наушники, громкоговорители, микрофоны и т.д.
Описание
Gives the characteristics to be specified, performance requirements and the relevant methods of measurement for electromechanical volume indicators. The concept of 'volume' is a practical way of assigning a numerical value to the magnitude of electrical speech and music programme signals.The contents of the corrigendum of September 1991 have been included in this copy.