ONORM EN ISO 7779 : 2010

Withdrawn

Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

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ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT

Available format(s):

Withdrawn date: 01-06-2019

Language(s):

Published date: 12-01-2013

Publisher: Osterreichisches Normungsinstitut/Austrian Standards

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

1 Scope
2 Normative references
3 Terms and definitions
  3.1 General definitions
  3.2 Acoustical definitions
4 Requirements
5 Installation and operating conditions
  5.1 Equipment installation
  5.2 Input voltage and frequency
  5.3 Equipment operation
6 Method for determining sound power levels of
  equipment in reverberation rooms
  6.1 General
  6.2 Measurement uncertainty
  6.3 Test environment
  6.4 Instrumentation
  6.5 Installation and operation of equipment:
      General requirements
  6.6 Microphone positions and source locations
  6.7 Measurement of sound pressure level
  6.8 Measurement of the sound pressure level
      of the reference sound source
  6.9 Calculation of space/time-averaged band
      sound pressure level
  6.10 Calculation of sound power levels
7 Method for determining sound power levels of
  equipment under essentially free-field conditions over
  a reflecting plane
  7.1 General
  7.2 Measurement uncertainty
  7.3 Test environment
  7.4 Instrumentation
  7.5 Installation and operation of equipment:
      General requirement
  7.6 Measurement surface and microphone positions
  7.7 Measurement of sound pressure levels
  7.8 Calculation of surface sound pressure level
      sound power level
8 Method for measuring emission sound pressure levels
  at defined operator and bystander positions
  8.1 General
  8.2 Measurement uncertainty
  8.3 Test environment
  8.4 Instrumentation
  8.5 Installation and operation of equipment
  8.6 Microphone positions
  8.7 Measurement of sound pressure levels
  8.8 Calculation of the mean emission sound pressure
      level at the bystander positions
9 Information to be recorded and reported
  9.1 Information to be recorded
  9.2 Test report
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 of prominent
        discrete tones
Annex E (informative) Detection of impulsive sound
        pressure levels
Bibliography

Abstract - (Show below) - (Hide below)

Defines procedures for reporting and measuring the noise emission of information technology and telecommunications equipment. This standard is considered part of a noise test code for this type of equipment, and is based on basic noise emission standards ISO 3741, ISO 3744, ISO 3745 and ISO 11201. The basic emission quality 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.

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

Committee	TC 138
Development Note	Supersedes ONORM EN 27779 (03/2006)
Document Type	Standard
ISBN
Pages
Published
Publisher	Osterreichisches Normungsinstitut/Austrian Standards
Status	Withdrawn
Superseded By	ÖNORM EN ISO 7779 : 2019

International Equivalents – Equivalent Standard(s) & Relationship - (Show below) - (Hide below)

Equivalent Standard(s)	Relationship
SN EN ISO 7779 : 2010	Identical
UNI EN ISO 7779 : 2010	Identical
UNE-EN ISO 7779:2011	Identical
NS EN ISO 7779 : 1ED 2010	Identical
EN ISO 7779:2018	Identical
NEN EN ISO 7779 : 2010	Identical
NBN EN ISO 7779 : 2010	Identical
ISO 7779:2010	Identical
I.S. EN ISO 7779:2010	Identical
BS EN ISO 7779:2010	Identical
EN ISO 7779:2010	Identical
NF EN ISO 7779 : 2010	Identical
DIN EN ISO 7779:2011-01	Identical

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

OVE/ONORM EN 61969-1 : 2012	MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT - OUTDOOR ENCLOSURES - PART 1: DESIGN GUIDELINES (IEC 61969-1:2011)
OVE/ONORM EN 62040-3 : 2012	UNINTERRUPTIBLE POWER SYSTEMS (UPS) - PART 3: METHOD OF SPECIFYING THE PERFORMANCE AND TEST REQUIREMENTS (IEC 62040-3:2011)

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

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 266:1997	Acoustics — Preferred frequencies
ISO 9296:2017	Acoustics — Declared noise emission values of information technology and telecommunications equipment
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
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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