EN 61672-2:2003

SLOVENSKI SIST EN 61672-2:2004

STANDARD
julij 2004
Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests (IEC 61672-
2:2003)
ICS 17.140.50 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 61672-2
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2003
ICS 17.140.50 Supersedes EN 60651:1994 + A1:1994 + A2:2001 & EN 60804:2000

English version
Electroacoustics –
Sound level meters
Part 2: Pattern evaluation tests
(IEC 61672-2:2003)
Electroacoustique –  Elektroakustik –
Sonomètres Schallpegelmesser
Partie 2: Essais d'évaluation d'un modèle Teil 2: Baumusterprüfungen
(CEI 61672-2:2003) (IEC 61672-2:2003)

This European Standard was approved by CENELEC on 2003-06-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61672-2:2003 E
Foreword
The text of document 29/532/FDIS, future edition 1 of IEC 61672-2, prepared by IEC TC 29,
Electroacoustics, in cooperation with the International Organization of Legal Metrology (OILM), was
submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61672-2 on
2003-06-01.
This European Standard, in conjunction with EN 61672-1, supersedes EN 60651:1994 + A1:1994 +
A2:2001 and EN 60804:2000.
The following dates were fixed:

– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2004-03-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-06-01

Annexes designated "normative" are part of the body of the standard.
In this standard, annex A is normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61672-2:2003 was approved by CENELEC as a European Standard
without any modification.
__________
- 3 - EN 61672-2:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 60942 - Electroacoustics - Sound calibrators EN 60942 2003

IEC 61000-4-2 1995 Electromagnetic compatibility (EMC) EN 61000-4-2 1995
Part 4-2: Testing and measurement
techniques - Electrostatic discharge
immunity test
A1 1998 A1 1998
A2 2000 A2 2001
IEC 61000-4-3 2002 Part 4-3: Testing and measurement EN 61000-4-3 2002
techniques - Radiated, radio-frequency,
electromagnetic field immunity test

IEC 61000-4-6 1996 Part 4-6: Testing and measurement EN 61000-4-6 1996
techniques - Immunity to conducted
disturbances, induced by radio-
frequency fields
A1 2000 A1 2001
IEC 61000-6-2 1999 Part 6-2: Generic standards - Immunity EN 61000-6-2 2001
(mod) for industrial environments

1) 2)
IEC 61094-1 - Measurement microphones EN 61094-1 2000
Part 1: Specifications for laboratory
standard microphones
1) 2)
IEC 61183 - Electroacoustics - Random-incidence EN 61183 1994
and diffuse-field calibration of sound
level meters
IEC 61672-1 2002 Electroacoustics - Sound level meters EN 61672-1 2003
Part 1: Specifications
1)
Undated reference.
2)
Valid edition at date of issue.

Publication Year Title EN/HD Year
CISPR 16-1 1999 Specification for radio disturbance and - -
immunity measuring apparatus and
methods
Part 1: Radio disturbance and immunity
measuring apparatus
CISPR 22 (mod) 1997 Information technology equipment - EN 55022 1998
Radio disturbance characteristics -
Limits and methods of measurement

ISO/IEC Guide 1995 Guide to the expression of uncertainty - -
Expres in measurement
ISO/IEC 1993 International vocabulary of basic and - -
general terms in metrology
NORME CEI
INTERNATIONALE IEC
61672-2
INTERNATIONAL
Première édition
STANDARD
First edition
2003-04
Electroacoustique –
Sonomètres –
Partie 2:
Essais d'évaluation d'un modèle
Electroacoustics –
Sound level meters –
Part 2:
Pattern evaluation tests
© IEC 2003 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
CODE PRIX
W
Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61672-2 © IEC:2003 – 3 –
CONTENTS
FOREWORD . 7
1 Scope .11
2 Normative references.11
3 Terms and definitions.13
4 Submission for testing.13
5 Marking of the sound level meter and information in the instruction manual .13
6 Mandatory facilities and general requirements .15
7 Environmental, electrostatic and radio-frequency tests .19
7.1 General .19
7.2 Expanded uncertainties for measurements of environmental test conditions .21
7.3 Influence of static pressure .21
7.4 Tolerance limits on air temperature, relative humidity and static pressure .23
7.5 Acclimatization requirements for tests of the influence of air temperature and
relative humidity.23
7.6 Abbreviated test of the influence of air temperature and relative humidity
combined.25
7.7 Influence of air temperature .29
7.8 Influence of relative humidity.31
7.9 Influence of electrostatic discharges.33
7.10 Influence of a.c. power frequency and radio-frequency fields .33
8 Radio-frequency emissions and public power supply disturbances .41
9 Electroacoustical performance tests .43
9.1 General .43
9.2 Indication at the calibration check frequency .43
9.3 Directional response .45
9.4 Tests of frequency weightings with acoustical signals .49
9.5 Tests of frequency weightings with electrical signals.55
9.6 Combined effect of reflections, diffraction and corrections for nominal
microphone frequency response and for the influence of a windscreen .59
9.7 Adjustments to obtain free-field sound levels.59
9.8 Level linearity.61
9.9 Under-range indication.65
9.10 Self-generated noise.65
9.11 Decay time constants for time weightings F and S .67
9.12 Toneburst response for sound level meters that measure time-weighted
sound level .67
9.13 Toneburst response for sound level meters that measure sound exposure
level or time-average sound level .69
9.14 Response to sequences of repeated tonebursts for sound level meters that
measure time-average sound level .71
9.15 Overload indication .73
9.16 Peak C sound level .75

61672-2 © IEC:2003 – 5 –
9.17 Reset.77
9.18 Electrical output .77
9.19 Timing facilities.77
9.20 Crosstalk in multi-channel sound level meter systems .77
9.21 Power supply .77
10 Pattern evaluation report .79

61672-2 © IEC:2003 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
ELECTROACOUSTICS – SOUND LEVEL METERS –
Part 2: Pattern evaluation tests
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization
for Standardization (ISO) in accordance with conditions determined by agreement between the two
organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity
...