DIN 45405:1967-07

Отменен

Psophometer for broadband circuits — 3 стр.

Ссылочные документы

Отменен

Communication engineering; two-pole plug, shielded, for 4 mm sleeve diameter — 1 стр.

Отменен

Acoustic, electroacoustic; standard frequencies for measurements — 2 стр.

Отменен

Measurement of the unbalance-to-ground of electroacoustic equipment — 5 стр.

Отменен

Interference rejection of electroacoustical devices; measuring methods and quantities to be measured — 4 стр.

Действует

Noise level measurement in sound systems — 4 стр.

Действует

Denomination of the ripple of d.c voltage, periodic deviations; terms and measuring methods — 3 стр.

Действует

Noise level measurement in sound systems — 4 стр.