CISPR 24:2010
(Main)Information technology equipment - Immunity characteristics - Limits and methods of measurement
Information technology equipment - Immunity characteristics - Limits and methods of measurement
CISPR 24:2010 applies to information technology equipment (ITE) as defined in CISPR 22. The object of this publication is to establish requirements that will provide an adequate level of intrinsic immunity so that the equipment will operate as intended in its environment. The publication defines the immunity test requirements for equipment within its scope in relation to continuous and transient conducted and radiated disturbances, including electrostatic discharges (ESD). Procedures are defined for the measurement of ITE and limits are specified which are developed for ITE within the frequency range from 0 Hz to 400 GHz. For exceptional environmental conditions, special mitigation measures may be required. Owing to testing and performance assessment considerations, some tests are specified in defined frequency bands or at selected frequencies. Equipment which fulfils the requirements at these frequencies is deemed to fulfil the requirements in the entire frequency range from 0 Hz to 400 GHz for electromagnetic phenomena. The test requirements are specified for each port considered. This second edition cancels and replaces the first edition published in 1997, and its Amendments 1(2001) and 2(2002). It is a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- dated references updated;
- option of using a 4 % step size for continuous conducted immunity test deleted;
- revision of Annex A for telephony equipment including methodology for measuring the demodulation from a speaker/hands free device;
- inclusion of new annex related to DSL equipment. The contents of the corrigendum of June 2011 have been included in this copy.
Appareils de traitement de l'information - Caractéristiques d'immunité - Limites et méthodes de mesure
La CISPR 24:2010 s'applique aux appareils de traitement de l'information (ATI) tels que définis dans la CISPR 22. L'objet de cette publication est de définir des exigences qui apportent un niveau approprié d'immunité intrinsèque de façon que l'appareil puisse fonctionner normalement dans son environnement. La publication définit les exigences d'essai d'immunité pour les appareils définis dans le domaine d'application, en matière de perturbations continues et transitoires, conduites et rayonnées, ce qui inclut les décharges électrostatiques (DES). Des procédures sont définies pour la mesure des ATI et des limites leur sont spécifiées dans la gamme des fréquences comprises entre 0 Hz et 400 GHz. Dans des conditions environnementales exceptionnelles, des mesures particulières de protection peuvent être nécessaires. Suite à l'évaluation des essais et des critères d'aptitude, certains essais ne sont définis que dans certaines bandes de fréquences ou à des fréquences particulières. Tout appareil qui satisfait à ces exigences pour ces fréquences est considéré comme satisfaisant aux exigences pour les phénomènes électromagnétiques dans toute la gamme des fréquences comprises entre 0 Hz et 400 GHz. Les exigences d'essai sont spécifiées pour chaque accès considéré. Cette deuxième édition annule et remplace la première édition parue en 1997, son Amendement 1 (2001) et 2 (2002). Elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- références datées mises à jour;
- option d'utilisation d'un pas de 4 % pour l'essai d'immunité conduite continu supprimée;
- révision de l'Annexe A pour les appareils de téléphonie, y compris la méthodologie de mesure de la démodulation d'un haut-parleur / dispositif mains libres;
- inclusion d'une nouvelle annexe relative aux appareils DSL. Le contenu du corrigendum de juin 2011 a été pris en considération dans cet exemplaire.
General Information
Standards Content (Sample)
CISPR 24
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
Information technology equipment – Immunity characteristics – Limits and
methods of measurement
Appareils de traitement de l'information – Caractéristiques d'immunité – Limites
et méthodes de mesure
CISPR 24:2010
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
CISPR 24
Edition 2.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
Information technology equipment – Immunity characteristics – Limits and
methods of measurement
Appareils de traitement de l'information – Caractéristiques d'immunité – Limites
et méthodes de mesure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 33.100.10 ISBN 978-2-88912-163-2
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – CISPR 24 © IEC:2010
CONTENTS
FOREWORD...........................................................................................................................4
INTRODUCTION.....................................................................................................................6
1 Scope and object ..............................................................................................................7
2 Normative references........................................................................................................7
3 Terms and definitions .......................................................................................................8
4 Immunity test requirements.............................................................................................11
4.1 General .................................................................................................................11
4.2 Particular requirements..........................................................................................11
4.2.1 Electrostatic discharges (ESD)...................................................................11
4.2.2 Electrical fast transients (EFT) ...................................................................12
4.2.3 Continuous radio frequency disturbances ...................................................12
4.2.4 Power-frequency magnetic fields................................................................13
4.2.5 Surges.......................................................................................................13
4.2.6 Voltage dips and interruptions ....................................................................13
5 Applicability ....................................................................................................................13
6 Conditions during testing.................................................................................................14
6.1 General conditions.................................................................................................14
6.2 Particular conditions (EUT operational modes, etc.) ...............................................15
7 Performance criteria .......................................................................................................15
7.1 General performance criteria .................................................................................15
7.2 Performance criterion A .........................................................................................15
7.3 Performance criterion B .........................................................................................15
7.4 Performance criterion C.........................................................................................15
7.5 Particular performance criteria...............................................................................16
8 Product documentation ...................................................................................................16
9 Measurement uncertainty................................................................................................16
10 Immunity requirements ...................................................................................................16
Annex A (normative) Telephony terminal equipment .............................................................19
Annex B (normative) Data processing equipment..................................................................29
Annex C (normative) Local area networks (LAN)...................................................................33
Annex D (normative) Printers and plotters ............................................................................34
Annex E (normative) Copying machines ...............................................................................35
Annex F (normative) Automatic teller machines (ATM)..........................................................36
Annex G (normative) Point of sale terminals (POST) ............................................................38
Annex H (normative) xDSL Terminal equipment....................................................................40
Bibliography ..........................................................................................................................44
Figure 1 – Description of ports ................................................................................................9
Figure A.1 – Example sound coupling set-up between the acoustic output device of a
telephone handset and an artificial ear for detecting demodulated sound pressure level.........21
Figure A.2 – Example test set-up for measuring the sound pressure level from the
acoustic output device of a telephone handset.......................................................................23
Figure A.3 – Test setup for measuring the reference sound pressure level from aspeaker/hands free phone.....................................................................................................24
Figure A.4 – Demodulation on analogue lines, set up.............................................................25
---------------------- Page: 4 ----------------------CISPR 24 © IEC:2010 – 3 –
Figure A.5 – Example of typical small key telephone system or PABX ....................................27
Figure H.1 – DSL access system configuration ......................................................................40
Table 1 – Immunity, enclosure port........................................................................................16
Table 2 – Immunity, signal ports and telecommunication ports...............................................17
Table 3 – Immunity, input d.c. power port (excluding equipment marketed with aa.c./d.c. power converter)......................................................................................................17
Table 4 – Immunity, input a.c. power ports (including equipment marketed with aseparate a.c./d.c power converter) ........................................................................................18
Table A.1 – Criteria applied to TTE functions, used during continuous disturbances
testing...................................................................................................................................19
Table A.2 – Maximum acoustic demodulated levels at an ear piece .......................................22
Table A.3 – Maximum acoustic demodulated levels relative to reference level........................23
Table A.4 – Maximum demodulated differential mode signals at analogue ports.....................25
Table A.5 – TTE performance criteria for spot frequency tests ...............................................26
Table A.6 – TTE performance criteria for non-continuous radio frequency disturbances .........26
Table A.7 – Test configurations and performance assessment methods applicable to a
PABX and associated terminals for continuous RF disturbance tests .....................................28
Table H.1 – ITU-T recommendations for xDSL systems .........................................................41
Table H.2 – Example cable attenuation..................................................................................41
---------------------- Page: 5 ----------------------– 4 – CISPR 24 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INFORMATION TECHNOLOGY EQUIPMENT –
IMMUNITY CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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Publications.8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard CISPR 24 has been prepared by CISPR subcommittee I:Electromagnetic compatibility of information technology equipment, multimedia equipment and
receivers.This second edition cancels and replaces the first edition published in 1997, and its
Amendments 1(2001) and 2 (2002). It is a technical revision.This edition includes the following significant technical changes with respect to the previous
edition:• dated references updated;
• option of using a 4 % step size for continuous conducted immunity test deleted;
• revision of Annex A for telephony equipment including methodology for measuring the
demodulation from a speaker / hands free device;• inclusion of new annex related to DSL equipment.
---------------------- Page: 6 ----------------------
CISPR 24 © IEC:2010 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
CIS/I/331/FDIS CIS/I/334/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
The contents of the corrigendum of June 2011 have been included in this copy.
---------------------- Page: 7 ----------------------
– 6 – CISPR 24 © IEC:2010
INTRODUCTION
This CISPR publication establishes uniform requirements for the electromagnetic immunity of
information technology equipment. The test methods are given in the referenced Basic EMC
Immunity Standards. This publication specifies applicable tests, test levels, product operating
conditions and assessment criteria.---------------------- Page: 8 ----------------------
CISPR 24 © IEC:2010 – 7 –
INFORMATION TECHNOLOGY EQUIPMENT –
IMMUNITY CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT
1 Scope and object
This CISPR publication applies to information technology equipment (ITE) as defined in
CISPR 22.The object of this publication is to establish requirements that will provide an adequate level of
intrinsic immunity so that the equipment will operate as intended in its environment. The
publication defines the immunity test requirements for equipment within its scope in relation to
continuous and transient conducted and radiated disturbances, including electrostatic
discharges (ESD).Procedures are defined for the measurement of ITE and limits are specified which are
developed for ITE within the frequency range from 0 Hz to 400 GHz.For exceptional environmental conditions, special mitigation measures may be required.
Owing to testing and performance assessment considerations, some tests are specified in
defined frequency bands or at selected frequencies. Equipment which fulfils the requirements
at these frequencies is deemed to fulfil the requirements in the entire frequency range from
0 Hz to 400 GHz for electromagnetic phenomena.The test requirements are specified for each port considered.
NOTE 1 Safety considerations are not covered in this publication.
NOTE 2 In special cases, situations will arise where the level of disturbance may exceed the levels specified in
this publication, for example where a hand-held transmitter is used in proximity to equipment. In these instances,
special mitigation measures may have to be employed.2 Normative references
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.IEC 60050-161:1990, International Electrotechnical Vocabulary (IEV) – Chapter 161:
Electromagnetic compatibilityIEC 60318-1:2009, Electroacoustics – Simulators of human head and ear – Part 1: Ear
simulator for the measurement of supra-aural and circumaural earphonesIEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
Amendment 1(2007)Amendment 2(2010)
IEC 61000-4-4:2004, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
---------------------- Page: 9 ----------------------
– 8 – CISPR 24 © IEC:2010
IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fieldsIEC 61000-4-8:2009, Electromagnetic compatibility (EMC) – Part 4-8: Testing and
measurement techniques – Power frequency magnetic field immunity test
IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and
measurement techniques – Voltage dips, short interruptions and voltage variations immunity
testsCISPR 16-1-2:2003, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-2: Radio disturbance and immunity measuring apparatus – Ancillary
equipment – Conducted disturbancesAmendment 1(2004)
Amendment 2(2006)
CISPR 20:2006, Sound and television broadcast receivers and associated equipment –
Immunity characteristics – Limits and methods of measurementCISPR 22:2008, Information technology equipment – Radio disturbance characteristics – Limits
and methods of measurement3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-161, and the
following apply.3.1
degradation
unwanted change in operational performance of an EUT due to electromagnetic disturbances.
This does not necessarily mean malfunction or catastrophic failure3.2
equipment under test
EUT
representative device or functionally interactive group of devices (that is a system) which
includes one or more host units that is subjected to test procedures specified in this publication
3.3information technology equipment
ITE
any equipment:
a) which has a primary function of either (or a combination of) entry, storage, display,
retrieval, transmission, processing, switching, or control, of data and of telecommunication
messages and which may be equipped with one or more terminal ports typically operated
for information transfer;b) with a rated supply voltage not exceeding 600 V.
It includes, for example, data processing equipment, office machines, electronic business
equipment and telecommunication equipment.Any equipment (or part of the ITE equipment) which has a primary function of radio trans-
mission and/or reception according to the ITU Radio Regulations are excluded from the scope
of this publication.---------------------- Page: 10 ----------------------
CISPR 24 © IEC:2010 – 9 –
NOTE Any equipment which has a function of radio transmission and/or reception according to the definitions of
the ITU Radio Regulations should fulfil the national radio regulations, whether or not this publication is also valid.
Equipment, for which all disturbance requirements in the frequency range are explicitly formul-
ated in other IEC or CISPR publications, are excluded from the scope of this publication.
[3.1 of CISPR 22:2008]3.4
jitter (of a cathode ray tube (CRT) monitor)
peak-to-peak variation in the geometric location of picture elements on the viewing surface of
the CRT monitor3.5
port
particular interface of the specified EUT with the external electromagnetic environment (see
Figure 1)Enclosure port
DC power port Earth port
Information technology
AC power port Signal port
equipment
Telecommunication port
IEC 2016/10
Figure 1 – Description of ports
3.6
enclosure port
physical boundary of the EUT through which electromagnetic fields may radiate or impinge. For
plug-in units, the physical boundary will be defined by the host unit3.7
telephony call
process exercised in the network and the telecommunication terminal equipment (TTE) to allow
interchange of information (speech, video or data) with another TTE through the network
NOTE The call should be operated in the way specified by the manufacturer. For circuit switched services, the
exchange of data should be considered to be possible when a 64 kbit/s channel or equivalent is available for both
parties. For packet service, the exchange of information should be considered to be possible when a virtual path is
established to the called TTE.3.8
establishment of a telephony call
the operating procedure for a user or an automatic process in conjunction with the network to
reach the capability to exchange information with another TTENOTE See Note of 3.7.
3.9
reception of a telephony call
the operating procedure for a user or an automatic process initiated by, and in conjunction with,
the network to reach the capability to exchange information with another TTENOTE See Note of 3.7.
3.10
maintenance of a telephony call
the capability of exchanging information without having to clear and re-establish a call
NOTE See Note of 3.7.---------------------- Page: 11 ----------------------
– 10 – CISPR 24 © IEC:2010
3.11
clearing of a telephony call
the operating procedure for a user or an automatic process in conjunction with the network
(either at the initiative of the local party or the distant party) to stop the capability of exchanging
information by an orderly return to a state where the establishment of a new call is possible
NOTE See Note of 3.7.3.12
network terminator
associated equipment representing the termination of the telecommunication network
3.13telephony service
a service providing users with the ability for real-time two-way speech conversation via a
network[see ITU-T, I.241.1]
3.14
telecommunications terminal equipment
TTE
equipment intended to be connected to a public or private telecommunications network, that is:
a) to be connected directly to the termination of a telecommunications network in order to
send, process or receive information; orb) to inter-work with a telecommunications network being connected directly or indirectly to
the termination of a telecommunications network in order to send, process or receive
information3.15
multifunction equipment
information technology equipment in which two or more functions subject to this standard
and/or to other standards are provided in the same unitNOTE Examples of multifunction equipment include
− a personal computer provided with a telecommunication function and/or broadcast reception function;
− a personal computer provided with a measuring function, etc.3.16
telecommunication network port
point of connection for voice, data and signaling transfers intended to interconnect widely
dispersed systems via such means as direct connection to multi-user telecommunications
networks (e.g. public switched telecommunications networks (PSTN), integrated services
digital networks (ISDN), x-type digital subscriber lines (xDSL), etc.), local area networks (e.g.
Ethernet, Token Ring, etc.) and similar networksNOTE A port generally intended for interconnection of components of an ITE system under test (e.g. RS-232,
IEEE Standard 1284 (parallel printer), Universal Serial Bus (USB), IEEE Standard 1394 (“Fire Wire”), etc.) and used
in accordance with its functional specifications (e.g. for the maximum length of cable connected to it), is not
considered to be a telecommunications/network port under this definition.3.17
analogue interface
an interface that transmits and receives signals whose characteristic quantities follow
continuously the variations of another physical quantity representing information
---------------------- Page: 12 ----------------------CISPR 24 © IEC:2010 – 11 –
3.18
acoustic interface
port at which audio signals emanate and/or originate
3.19
associated equipment
equipment needed to exercise and/or monitor the operation of the EUT in a representative way
4 Immunity test requirements4.1 General
The immunity test requirements for equipment are given on a port-by-port basis.
Tests shall be conducted in a well-defined and reproducible manner.
The tests shall be carried out as single tests in sequence. The sequence of testing is optional.
The description of the test, the test generator, the test methods and the test set-up are given in
IEC basic EMC standards which are referred to in the following tables.The contents of these IEC basic EMC standards are not repeated here; however, modifications
or additional information needed for the practical application of the tests are given in this
publication.4.2 Particular requirements
4.2.1 Electrostatic discharges (ESD)
The test procedure shall be in accordance with IEC 61000-4-2, with the following modific
...
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