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ECMA 74 : 14ED 2017

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
Superseded date

02-04-2021

Published date

01-12-2013

1 Scope
2 Normative references
3 Terms and definitions
4 Conformity requirements
5 Installation and operating conditions
6 Method for determination of sound power
  levels of equipment in reverberation test rooms
7 Method for determination of sound power levels
  of equipment under essentially free-field conditions
  over a reflecting plane
8 Method for determination of emission sound pressure
  levels at defined operator and bystander positions
9 Information to be recorded and reported
Annex A (normative) - Test accessories
Annex B (normative) - Measurement surfaces
Annex C (normative) - Installation and operating
        conditions for specific equipment categories
Annex D (informative) - Identification and evaluation
        of prominent discrete tones
Annex E (informative) - Detection of impulsive noise
Bibliography

Describes procedures for measuring and reporting the noise emission of information technology and telecommunications equipment.

DocumentType
Standard
PublisherName
European Computer Manufacturers Association
Status
Superseded
SupersededBy

ISO 12001:1996 Acoustics Noise emitted by machinery and equipment Rules for the drafting and presentation of a noise test code
ISO 10302-2:2011 Acoustics — Measurement of airborne noise emitted and structure-borne vibration induced by small air-moving devices — Part 2: Structure-borne vibration measurements
ISO 3744:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane
ISO 389-7:2005 Acoustics Reference zero for the calibration of audiometric equipment Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
ISO/TR 25417:2007 Acoustics Definitions of basic quantities and terms
IEC 60942:2003 Electroacoustics - Sound calibrators
ISO 266:1997 Acoustics — Preferred frequencies
ISO 9296:2017 Acoustics — Declared noise emission values of information technology and telecommunications equipment
ECMA 108 : 6ED 2016 DETERMINATION OF HIGH-FREQUENCY SOUND POWER LEVELS EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
ISO 28961:2012 Acoustics — Statistical distribution of hearing thresholds of otologically normal persons in the age range from 18 years to 25 years under free-field listening conditions
IEC 61947-1:2002 Electronic projection - Measurement and documentation of key performance criteria - Part 1: Fixed resolution projectors
ISO 10996:1999 Photography Still-picture projectors Determination of noise emissions
ISO 80000-8:2007 Quantities and units Part 8: Acoustics
ISO/IEC 11160-1:1996 Information technology Office equipment Minimum information to be included in specification sheets Printers Part 1: Class 1 and Class 2 printers
ISO 9295:2015 Acoustics Determination of high-frequency sound power levels emitted by machinery and equipment
ISO 6926:2016 Acoustics Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
IEC 61947-2:2001 Electronic projection - Measurement and documentation of key performance criteria - Part 2: Variable resolution projectors
ISO 10302-1:2011 Acoustics — Measurement of airborne noise emitted and structure-borne vibration induced by small air-moving devices — Part 1: Airborne noise measurement
ISO 11203:1995 Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level
ISO 3741:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
ISO 3745:2012 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms
IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
ECMA 109 : 7ED 2016 DECLARED NOISE EMISSION VALUES OF INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
ECMA/TR 27 : 2ED 95 METHOD FOR THE PREDICTION OF INSTALLATION NOISE LEVELS
ISO 11201:2010 Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections
ISO 7779:2010 Acoustics Measurement of airborne noise emitted by information technology and telecommunications equipment

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