The objective of this Standard is to provide acoustical noise emission data for information technology and telecommunications equipment (ITT equipment) to allow users, planners, manufacturers and authorities to compare noise emissions from different products, for installation acoustic planning and workplace noise immission requirements.
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 General definitions
3.2 Definitions relating to acoustics
3.3 Definitions relating to statistics
4 Conformity requirements
4.1 For declaration
4.2 For verification
5 Determination of the noise emission values to declare
5.1 General
5.2 Determination of the declared mean A-weighted sound power level, LWA,m
5.3 Determination of the declared mean A-weighted emission sound pressure level, LpA,m
5.4 Determination of the statistical adder for verification, Kv
6 Presentation of declared noise emission values
6.1 Required information
6.2 Additional information
7 Verification of the statistical upper limit A-weighted sound power level, LWA,c
7.1 General
7.2 Verification of LWA,c for a batch of equipment
Annex A
A.1 General
A.2 Determination of the statistical adder for verification, Kv
A.2.1 Initial considerations
A.2.2 Determination of the sample total standard deviation for the batch
A.2.3 Determination of the statistical adder for verification, Kv
Annex B
Annex C
C.1 General
C.2 Annex status
C.3 Determination of the character of noise
C.3.1 General
C.3.2 Procedure for detecting prominent discrete tones
