EN 61252:1995/A1:2001

SLOVENSKI STANDARD
01-september-2002
Electroacostics - Specification for personal sound exposure - Amendment A1 (IEC
61252:1993/A1:2001)
Electroacoustics - Specifications for personal sound exposure meters
Elektroakustik - Anforderungen an Personenschallexposimeter
Electroacoustique - Spécifications des exposimètres acoustiques individuels
Ta slovenski standard je istoveten z: EN 61252:1995/A1:2001
ICS:
13.140 Vpliv hrupa na ljudi Noise with respect to human
beings
17.140.50 Elektroakustika Electroacoustics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61252/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM January 2001

ICS 17.140.50
English version
Electroacoustics -
Specifications for personal sound exposure meters
(IEC 61252:1993/A1:2000)
Electroacoustique - Spécifications des Elektroakustik - Anforderungen an
exposimètres acoustiques individuels Personenschallexposimeter
(CEI 61252:1993/A1:2000) (IEC 61252:1993/A1:2000)

This amendment A1 modifies the European Standard EN 61252:1995; it was approved by CENELEC on
2000-11-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this amendment 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 amendment 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, 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

© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61252:1995/A1:2001 E

Foreword
The text of document 29/457/FDIS, future amendment 1 to IEC 61252:1993, prepared by IEC TC 29,
Electroacoustics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
amendment A1 to EN 61252:1995 on 2000-11-01.
The following dates were fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2001-08-01
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2003-11-01

Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annex C is informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of amendment 1:2000 to the International Standard IEC 61252:1993 was approved by
CENELEC as an amendment to the European Standard without any modification.
__________
- 3 - EN 61252:1995/A1:2001
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
Publication Year Title EN/HD Year
Add:
IEC 61000-4-2 1995 Electromagnetic compatibility (EMC) EN 61000-4-2 1995
Part 4-2: Testing and measurement
techniques - Electrostatic discharge
immunity test
IEC 61000-4-3 1995 Part 4-3: Testing and measurement EN 61000-4-3 1996
(mod) techniques - Radiated, radio-frequency,
electromagnetic field immunity test

IEC 61000-6-1 1997 Part 6-1: Generic standards - Immunity for - -
residential, commercial and light-industrial
environments
IEC 61000-6-2 1999 Part 6-2: Generic standards - Immunity for EN 61000-6-2 1999
industrial environments
IEC 61000-6-3 1996 Part 6-3: Generic standards - Emission - -
standard for residential, commercial and
light-industrial environments
CISPR 22 (mod) 1997 Information technology equipment - Radio EN 55022 1998
disturbance characteristics - Limits and + corr. August 1999
methods of measurement
NORME
CEI
INTERNATIONALE IEC
INTERNATIONAL
STANDARD
AMENDEMENT 1
AMENDMENT 1
2000-10
Amendement 1
Electroacoustique –
Spécifications des exposimètres
acoustiques individuels
Amendment 1
Electroacoustics –
Specifications for personal sound
exposure meters
© IEC 2000 Droits de reproduction réservés ⎯ Copyright - all rights reserved
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
K
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61252 Amend.1 © IEC:2000 – 3 –
FOREWORD
This amendment has been prepared by IEC technical committee 29: Electroacoustics.
The text of this amendment is based on the following documents:
FDIS Report on voting
29/457/FDIS 29/471/RVD
Full information on the voting for the approval of this amendment can be found in the report on
voting indicated in the above table.
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until 2004. At this date, the publication will be:
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
–––––––––––
Page 3
CONTENTS
Add the following new clause:
15 Electromagnetic and electrostatic compatibility requirements and test procedures
Add the following new annex:
Annex C – Emission limits
Page 9
2 Normative references
Insert, on page 11, after IEC 60942, the titles of the following standards:
IEC 61000-4-2:1995, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement
techniques – Section 2: Electrostatic discharge immunity test. Basic EMC publication
IEC 61000-4-3:1995, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement
techniques – Section 3: Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-6-1:1997, Electromagnetic compatibility (EMC) – Part 6: Generic standards –
Section 1: Immunity for residential, commercial and light-industrial environments
IEC 61000-6-2:1999, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards –
Immunity for industrial environments

61252 Amend.1 © IEC:2000 – 5 –
CISPR 22:1997, Information technology equipment – Radio disturbance characteristics – Limits
and methods of measurement
CISPR 61000-6-3:1996, Electromagnetic compatibility (EMC) – Part 6: Generic standards –
Section 3: Emission standard for residential, commercial and light-industrial environments
Page 11
3 Definitions
Add, on page 15, the following phrase and new definition:
The following definition applies in addition to those specified in IEC 61000-4-2, IEC 61000-4-3,
IEC 61000-6-1, IEC 61000-6-2, and CISPR 61000-6-3.
3.11
reference orientation (of a personal sound exposure meter)
orientation of a personal sound exposure meter that corresponds to the meter as worn in
normal use by a person standing upright and facing the principal direction of an emitter or
receiver of radio-frequency electromagnetic fields
Page 33
Add the following new clause 15:
15 Electromagnetic and electrostatic compatibility requirements
and test procedures
15.1 Field of application
15.1.1 This clause specifies requirements for personal sound exposure meters with respect to
their immunity to power- and radio-frequency fields and to electrostatic discharge, and the
permitted radio-frequency emissions, together with test procedures to demonstrate
conformance to the specifications of this standard. As personal sound exposure meters of this
type are principally designed to be worn by a person, these requirements are specified for
battery operation of the instruments only. No specific requirements are made for public power
supply connection. If the meter is used in such a fashion, then the applicable generic
electromagnetic compatibility standards prevail.
15.1.2 The electromagnetic and electrostatic compatibility requirements are equally applicable
for personal sound exposure meters used in residential, commercial and light-industrial
environments, or industrial sites. The requirements of this clause are additional to those
contained in previous clauses and do not alter any of the specifications for personal sound
exposure meters contained therein. The requirements do not apply to personal sound exposure
meters complying with this standard prior to the publication of the amendment.

61252 Amend.1 © IEC:2000 – 7 –
15.2 Emisson limits
The upper limits on radio-frequency emissions from any apparatus are defined for compatibility
with many different standards with the limits laid down in table 1 of CISPR 61000-6-3
forming the basic requirements for personal sound exposure meters. These are summarized in
annex C.
15.3 Electrostatic discharges
15.3.1 Personal sound exposure meters shall withstand electrostatic discharges of specified
magnitudes. The requirements are those specified in 1.4 of table 1 in IEC 61000-6-1 and are
summarized as follows.
– Contact discharges up to 4 kV and air discharges up to 8 kV with both positive and negative
voltages. The polarity of the electrostatic voltage is with respect to earth ground.
15.3.2 IEC 61000-6-1 specifies performance criterion B during and after the electrostatic
discharge tests, given as:
"The apparatus shall continue to operate as intended after the test. No degradation of
performance or loss of function is allowed below a performance level specified by the
manufacturer, when the apparatus is used as intended. The performance level may be
replaced by a permissible loss of performance. During the test, degradation of performance is
however allowed. No change of actual operating state or stored data is allowed. If the minimum
performance level or the permissible performance loss is not specified by the manufacturer,
then either of these may be derived from the product description and documentation (including
leaflets and advertising) and what the user may reasonably expect from the apparatus if used
as intended."
The term "apparatus" means any personal sound exposure meter conforming to the
specifications of this standard.
15.3.3 After each and every electrostatic discharge test is complete, the personal sound
exposure meter shall be fully operational and in a configuration identical to that established
before the start of the electrostatic discharge tests. Previously stored data (if any) shall remain
unchanged.
15.4 Immunity to power- and radio-frequency fields
15.4.1 Personal sound exposure meters shall exhibit a minimum degree of immunity over a
range of power- and radio-frequencies and field strengths. The requirements are those
specified in 1.1 of table 1 in IEC 61000-6-1 and 1.2 of table 1 in IEC 61000-6-2 with minor
amendments. These amendments extend the range of radio-frequency fields to cover from
27 MHz to 1 000 MHz, and increase the field strength for the power-frequency field to 80 A/m,
as specified in this standard. The requirements are summarized as follows.
– Frequency range from 27 MHz to 1 000 MHz. Root-mean-square electric field strength up to
and including 10 V/m (unmodulated) with 80 % sinusoidal amplitude modulation at 1 kHz,
except for the frequencies from 87 MHz to 108 MHz, from 174 MHz to 230 MHz and from
470 MHz to 790 MHz as specified in note 3 of table 1 in IEC 61000-6-2, where the root-
mean-square electric field strength is up to and including 3 V/m (unmodulated) with 80 %
sinusoidal amplitude modulation at 1 kHz.
– Uniform root-mean-square alternating magnetic field of 80 A/m strength at 50 Hz or 60 Hz.

61252 Amend.1 © IEC:2000 – 9 –
15.4.2 The immunity of any instrument to power- and radio-frequency fields shall be
demonstrated by applying an acoustic source of pink noise, band limited to 1/1 octave of 1 kHz
(from 700 Hz to 1,4 kHz), with a roll-off rate of at least 12 dB per octave below and above
these frequencies, respectively, at an A-weighted sound level of 85 dB ± 1 dB or corresponding
exposure level as indicated by the personal sound exposure meter under test, suitably
calibrated. The acoustic signal shall be applied to the microphone in such a manner that
causes no interference with either the applied electromagnetic field or the normal operation of
the personal sound exposure meter, or of the susceptibility of the instrument to power- or
radio-frequency radiation. The personal sound exposure meter shall be positioned in the
reference orientation relative to the source of radio-frequency emissions.
15.4.3 During testing, the personal sound exposure meter shall be set for the normal mode of
operation as described in the instruction manual. It shall be turned on, powered by its preferred
supply, and set to read A-weighted sound levels, if available. The level range control shall be
set (if applicable) to cover the range of sound levels from 80 dB to 90 dB. If a choice of ranges
covering these sound levels exists, the selected range shall be the one for which the lowest
measured sound level within the sound level range is closest to, but not greater than, 80 dB.
15.4.4 When the power- or radio-frequency field is applied, the change in the indication of the
sound level measured by the personal sound exposure meter shall not exceed ±2 dB or
corresponding exposure levels.
15.4.5 For personal sound exposure meters that do not give readouts of sound level in
decibels, the equivalent error limits shall be calculated in appropriate u
...