EN 55012:2007

SLOVENSKI STANDARD
01-februar-2008
1DGRPHãþD
SIST EN 55012:2003
SIST EN 55012:2003/A1:2005
9R]LODSORYLODLQQDSUDYHNLMLKSRJDQMDMRPRWRUML]QRWUDQMLP]JRUHYDQMHP
.DUDNWHULVWLNHREþXWOMLYRVWL]DUDGLMVNHPRWQMH0HMQHYUHGQRVWLLQPHULOQHPHWRGH
]D]DãþLWRVSUHMHPQLNRYNLQLVRQHSRVUHGQRYJUDMHQL&,635
Vehicles, boats and internal combustion engines - Radio disturbance characteristics -
Limits and methods of measurement for the protection of off-board receivers
Fahrzeuge, Boote und von Verbrennungsmotoren angetriebene Geräte -
Funkstöreigenschaften - Grenzwerte und Messverfahren zum Schutz von außerhalb
befindlichen Empfängern
Véhicules, bateaux et moteurs a combustion interne - Caractéristiques de perturbation
radioélectrique - Limites et méthodes de mesure pour la protection des récepteurs
extérieurs
Ta slovenski standard je istoveten z: EN 55012:2007
ICS:
27.020
33.100.10
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 55012
NORME EUROPÉENNE
November 2007
EUROPÄISCHE NORM
ICS 27.020; 33.100.10 Supersedes EN 55012:2002 + A1:2005

English version
Vehicles, boats and internal combustion engines -
Radio disturbance characteristics -
Limits and methods of measurement
for the protection of off-board receivers
(CISPR 12:2007)
Véhicules, bateaux et  Fahrzeuge, Boote und
moteurs à combustion interne - von Verbrennungsmotoren
Caractéristiques angetriebene Geräte -
de perturbation radioélectrique - Funkstöreigenschaften -
Limites et méthodes de mesure Grenzwerte und Messverfahren
pour la protection zum Schutz von außerhalb
des récepteurs extérieurs befindlichen Empfängern
(CISPR 12:2007) (CISPR 12:2007)

This European Standard was approved by CENELEC on 2007-09-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the 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

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 55012:2007 E
Foreword
The text of document CISPR/D/322/CDV, future edition 6 of CISPR 12, prepared by CISPR SC D,
Electromagnetic disturbances related to electric/electronic equipment on vehicles and internal combustion
engine powered devices, was submitted to the IEC-CENELEC parallel Unique Acceptance Procedure
and was approved by CENELEC as EN 55012 on 2007-09-01.
This European Standard supersedes EN 55012:2002 + A1:2005.
The following changes were made with respect to EN 55012:2002 + A1:2005:
– deletion of narrowband / broadband determination;
– general improvement of wording.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2008-06-01
national standard or by endorsement
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-09-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive EMC (2004/108/EC). See Annex ZZ.
Annexes ZA and ZZ have been added by CENELEC.
__________
Endorsement notice
The text of the International Standard CISPR 12:2007 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 55012:2007
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

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)
IEC 60050-161 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 161: Electromagnetic compatibility

CISPR 16-1-1 2006 Specification for radio disturbance and EN 55016-1-1 2007
immunity measuring apparatus and methods -
Part 1-1: Radio disturbance and immunity
measuring apparatus - Measuring apparatus

CISPR 16-1-3 2004 Specification for radio disturbance and EN 55016-1-3 2006
immunity measuring apparatus and methods -
Part 1-3: Radio disturbance and immunity
measuring apparatus - Ancillary equipment -
Disturbance power
CISPR 16-1-4 2007 Specification for radio disturbance and EN 55016-1-4 2007
immunity measuring apparatus and methods -
Part 1-4: Radio disturbance and immunity
measuring apparatus - Ancillary equipment -
Radiated disturbances
CISPR 16-2-3 2006 Specification for radio disturbance and EN 55016-2-3 2006
immunity measuring apparatus and methods -
Part 2-3: Methods of measurement of
disturbances and immunity - Radiated
disturbance measurements
1) 2)
CISPR 25 - Radio disturbance characteristics for the EN 55025 2003
protection of receivers used on board
vehicles, boats, and on devices -
Limits and methods of measurement

1)
Undated reference.
2)
Valid edition at date of issue.

Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directives

This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers all
relevant essential requirements as given in Annex I, Article 1(a) of the EC Directive 2004/108/EC.

Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directive concerned.

WARNING: Other requirements and other EC Directives may be applicable to the products falling within
the scope of this standard.
INTERNATIONAL
CISPR
ELECTROTECHNICAL
COMMISSION
COMMISSION
Sixth edition
ÉLECTROTECHNIQUE
Sixième édition
2007-05
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
Vehicles, boats and internal combustion engines –
Radio disturbance characteristics –
Limits and methods of measurement for the
protection of off-board receivers

Véhicules, bateaux et
moteurs à combustion interne –
Caractéristiques de perturbation radioélectrique –
Limites et méthodes de mesure pour la protection
des récepteurs extérieurs
PRICE CODE
XA
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
Pour prix, voir catalogue en vigueur

– 2 – CISPR 12 © IEC:2007
CONTENTS
FOREWORD.5
INTRODUCTION.7

1 Scope.8
2 Normative references .9
3 Terms and definitions .9
4 Limits of disturbance .11
4.1 Determination of conformance of vehicle/boat/device with limits.11
4.2 Peak and quasi-peak detector limits .13
4.3 Average detector limit.13
5 Methods of measurement .14
5.1 Measuring instrument .14
5.1.1 Spectrum analyser parameters .15
5.1.2 Scanning receiver parameters .15
5.1.3 Antenna types .16
5.1.4 Accuracy .16
5.2 Measuring location requirements .17
5.2.1 Outdoor test site (OTS) requirements .17
5.2.2 Absorber lined shielded enclosure (ALSE) requirements.19
5.2.3 Antenna requirements .20
5.3 Test object conditions.22
5.3.1 General .22
5.3.2 Vehicles and boats .22
5.3.3 Devices .23
5.4 Data collection .24
6 Methods of checking for compliance with CISPR requirements .24
6.1 General .24
6.2 Application of limit curves.24
6.2.1 Measurements under dry conditions .24
6.2.2 Measurements under wet conditions.24
6.3 Evaluation (general) .25
6.4 Type approval test.25
6.4.1 Single sample.25
6.4.2 Multiple samples (optional) .25
6.5 Surveillance (quality audit) of series production.25
6.5.1 Single sample.25
6.5.2 Multiple samples (optional) .25
6.6 Quick prototype check for development testing (optional, quasi-peak detector
emissions only) .

Annex A (normative) Statistical analysis of the results of measurements .26
Annex B (normative) Procedure to determine an alternative emission limit for
measurements at 3 m antenna distance.28

CISPR 12 © IEC:2007 – 3 –
Annex C (informative) Antenna and transmission line maintenance and
characterization .30
Annex D (informative) Construction features of motor vehicles affecting the emission
of ignition noise .35
Annex E (informative) Measurement of the insertion loss of ignition noise suppressors.36
Annex F (informative) Methods of measurement to determine the attenuation
characteristics of ignition noise suppressors for high voltage ignition systems .42
Annex G (informative) Flow chart for checking the applicability of CISPR 12.52
Annex H (informative) Items under consideration .53

Bibliography.54

Figure 1 – Method of determination of conformance.12
Figure 2 – Limit of disturbance (peak and quasi-peak detector) at 10 m antenna
distance.13
Figure 3 – Limits of disturbance (average detector) at 10 m antenna distance .14
Figure 4 – Measuring site (OTS) for vehicles and devices.18
Figure 5 – Measuring site (OTS) for boats .
...