Technical requirements and testing methods for local crossbar telephone switching systems

NEPLATNÁ vydaná dňa 1.1.1986

Specifications of 30 channels pulse code modulation multiplex equipment at 2048 kbit/s

NEPLATNÁ vydaná dňa 1.1.1986

Chemical reagents;Carbon tetra-chloride

NEPLATNÁ vydaná dňa 1.9.1992

Measuring methods of 30 channels pulse code modulation multiplex equipment at 2048 kbit/s

NEPLATNÁ vydaná dňa 1.1.1986

Acoustics--Determination of sound power levels of noise sources--Precision methods and engineering methods for reverberation rooms

NEPLATNÁ vydaná dňa 13.9.1986

Acoustics—Determination of sound power levels of noise sources using sound pressure—Precision methods for reverberation rooms

NEPLATNÁ vydaná dňa 26.3.2002

Acoustics—Determination of sound power levels of noise sources—Engineering methods for small,movable sources in reverberant field—Part 1:Comparison method for hard-walled test rooms

NEPLATNÁ vydaná dňa 26.3.2002

Acoustics--Determination of sound power levels of noise sources-using sound pressure--Engineering methods for smallmovable sources in reverberant fields--Part 2:Methods for special reverberation test rooms

NEPLATNÁ vydaná dňa 26.3.2002

Acoustics—Determination of sound power levels of noise sources—Precision methods for anechoic and semi-anechoic rooms

NEPLATNÁ vydaná dňa 13.9.1986

Acoustics—Determination of sound power levels of noise sources using pressure—Precision methods for anechoic and hemi-anechoic rooms

NEPLATNÁ vydaná dňa 2.7.2008