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  • EN ISO 7779:2010

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Acoustics - Measurement of airborne noise emitted by information technology and telecommunications equipment (ISO 7779:2010)

    Available format(s): 

    Superseded date:  28-01-2019

    Language(s): 

    Published date:  15-08-2010

    Publisher:  Comite Europeen de Normalisation

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    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

    Abstract - (Show below) - (Hide below)

    ISO 7779:2010 specifies procedures for measuring and reporting the noise emission of information technology and telecommunications equipment.The basic emission quantity is the A-weighted sound power level which may be used for comparing equipment of the same type but from different manufacturers, or for comparing different equipment.Three basic noise emission standards for determination of the sound power levels are specified in ISO 7779:2010 in order to avoid undue restriction on existing facilities and experience. ISO 3741 specifies comparison measurements in a reverberation test room; ISO 3744 and ISO 3745 specify measurements in an essentially free field over a reflecting plane. Any one of these three basic noise emission standards can be selected and used exclusively in accordance with ISO 7779:2010 when determining sound power levels of a machine.The A-weighted sound power level is supplemented by the A-weighted emission sound pressure level determined at the operator position(s) or the bystander positions, based on basic noise emission standard ISO 11201. This sound pressure level is not a worker's immission rating level, but it can assist in identifying any potential problems that could cause annoyance, activity interference, or hearing damage to operators and bystanders.Methods for determination of whether the noise emission includes prominent discrete tones or is impulsive in character are specified in annexes.ISO 7779:2010 is suitable for type tests and provides methods for manufacturers and testing laboratories to obtain comparable results.The methods specified in ISO 7779:2010 allow the determination of noise emission levels for a functional unit tested individually.The procedures apply to equipment which emits broadband noise, narrowband noise and noise which contains discrete-frequency components, or impulsive noise.The sound power and emission sound pressure levels obtained can serve noise emission declaration and comparison purposes (see ISO 9296).If sound power levels obtained are determined for a number of functional units of the same production series, they can be used to determine a statistical value for that production series (see ISO 9296).

    General Product Information - (Show below) - (Hide below)

    Committee CEN/TC 211
    Development Note Supersedes EN 27779 (11/2001)
    Document Type Standard
    Publisher Comite Europeen de Normalisation
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS EN 62040-5-3:2017 Uninterruptible power systems (UPS) DC output UPS. Performance and test requirements
    BS EN 62040-3:2011 Uninterruptible power systems (UPS) Method of specifying the performance and test requirements
    EN 62040-5-3:2017 Uninterruptible power systems (UPS) - Part 5-3: DC output UPS - Performance and test requirements
    EN 61947-1:2002 Electronic projection - Measurement and documentation of key performance criteria - Part 1: Fixed resolution projectors
    BS EN 62075:2012 Audio/video, information and communication technology equipment. Environmentally conscious design
    BS EN 61969-1:2012 Mechanical structures for electronic equipment. Outdoor enclosures Design guidelines
    I.S. EN 62040-5-3:2017 UNINTERRUPTIBLE POWER SYSTEMS (UPS) - PART 5-3: DC OUTPUT UPS - PERFORMANCE AND TEST REQUIREMENTS
    I.S. EN 62040-3:2011 UNINTERRUPTIBLE POWER SYSTEMS (UPS) - PART 3: METHOD OF SPECIFYING THE PERFORMANCE AND TEST REQUIREMENTS
    CEI EN 62040-3 : 2015 UNINTERRUPTIBLE POWER SYSTEMS (UPS) - PART 3: METHOD OF SPECIFYING THE PERFORMANCE AND TEST REQUIREMENTS
    EN 62040-3:2011 Uninterruptible power systems (UPS) - Part 3: Method of specifying the performance and test requirements
    I.S. EN 61947-1:2002 ELECTRONIC PROJECTION - MEASUREMENT AND DOCUMENTATION OF KEY PERFORMANCE CRITERIA - PART 1: FIXED RESOLUTION PROJECTORS
    EN 61969-1:2012 Mechanical structures for electronic equipment - Outdoor enclosures - Part 1: Design guidelines
    CEI EN 61947-2 : 2002 ELECTRONIC PROJECTION - MEASUREMENT AND DOCUMENTATION OF KEY PERFORMANCE CRITERIA - PART 2: VARIABLE RESOLUTION PROJECTORS (IEC 61947-2:2001)
    BS EN 61947-2:2002 Electronic projection. Measurement and documentation of key performance criteria Variable resolution projectors
    I.S. EN 61969-1:2012 MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT - OUTDOOR ENCLOSURES - PART 1: DESIGN GUIDELINES (IEC 61969-1:2011 (EQV))
    I.S. EN 62310-3:2008 STATIC TRANSFER SYSTEMS (STS) - PART 3: METHOD FOR SPECIFYING PERFORMANCE AND TEST REQUIREMENTS
    I.S. EN 62075:2012 AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - ENVIRONMENTALLY CONSCIOUS DESIGN (IEC 62075:2012 (EQV))
    UNE-EN 62075:2013 Audio/video, information and communication technology equipment - Environmentally conscious design
    CEI EN 61969-1 : 2012 MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT - OUTDOOR ENCLOSURES - PART 1: DESIGN GUIDELINES
    BS EN 62310-3:2008 Static transfer systems (STS) Method for specifying performance and test requirements
    BS EN 61947-1:2002 Electronic projection. Measurement and documentation of key performance criteria Fixed resolution projectors
    CEI EN 62075 : 2013 AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - ENVIRONMENTALLY CONSCIOUS DESIGN
    CEI EN 62310-3 : 2010 STATIC TRANSFER SYSTEMS (STS) - PART 3: METHOD FOR SPECIFYING PERFORMANCE AND TEST REQUIREMENTS
    EN 62075:2012/AC:2013 AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - ENVIRONMENTALLY CONSCIOUS DESIGN (IEC 62075:2012)
    EN 61947-2:2002 Electronic projection - Measurement and documentation of key performance criteria - Part 2: Variable resolution projectors
    EN 62310-3:2008 Static transfer systems (STS) - Part 3: Method for specifying performance and test requirements

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 12001:1996 Acoustics Noise emitted by machinery and equipment Rules for the drafting and presentation of a noise test code
    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 80000-8:2007 Quantities and units Part 8: Acoustics
    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
    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
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