SIST EN 55022:2011

SLOVENSKI STANDARD
SIST EN 55022:2011
01-marec-2011
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SIST EN 55022:2007
SIST EN 55022:2007/A1:2008
SIST EN 55022:2007/A2:2011
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PRWQMH0HMQHYUHGQRVWLLQPHULOQHPHWRGH
Information technology equipment - Radio disturbance characteristics - Limits and
methods of measurement
Einrichtungen der Informationstechnik - Funkstöreigenschaften - Grenzwerte und
Messverfahren
Appareils de traitement de l'information - Caractéristiques des perturbations
radioélectriques - Limites et méthodes de mesure
Ta slovenski standard je istoveten z: EN 55022:2010
ICS:
33.100.10 Emisija Emission
35.020 Informacijska tehnika in Information technology (IT) in
tehnologija na splošno general
SIST EN 55022:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 55022:2011

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SIST EN 55022:2011

EUROPEAN STANDARD
EN 55022

NORME EUROPÉENNE
December 2010
EUROPÄISCHE NORM

ICS 33.100.10 Supersedes EN 55022:2006 + A1:2007 + A2:2010


English version


Information technology equipment -
Radio disturbance characteristics -
Limits and methods of measurement
(CISPR 22:2008, modified)


Appareils de traitement de l'information - Einrichtungen der Informationstechnik -
Caractéristiques des perturbations Funkstöreigenschaften -
radioélectriques - Grenzwerte und Messverfahren
Limites et méthodes de mesure (CISPR 22:2008, modifiziert)
(CISPR 22:2008, modifiée)




This European Standard was approved by CENELEC on 2010-12-01. 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, Croatia, 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

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 55022:2010 E

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SIST EN 55022:2011
EN 55022:2010 - 2 -
Foreword

The text of the International Standard CISPR 22:2008, prepared by CISPR SC I, "Electromagnetic
compatibility of information technology equipment, multimedia equipment and receivers", together with
common modifications prepared by the Technical Committee CENELEC TC 210, "Electromagnetic
compatibility (EMC)", was submitted to the Unique Acceptance Procedure and was approved by
CENELEC as EN 55022 on 2010-12-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN 55022:2006 + A1:2007 + FprA2:2009.
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) 2011-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-12-01

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 Directives 2004/108/EC and 1999/5/EC. See Annex ZZ.
Annexes ZA and ZZ have been added by CENELEC.
_________
Endorsement notice
The text of the International Standard CISPR 22:2008 was approved by CENELEC as a European
Standard with agreed common modifications as given below.
COMMON MODIFICATIONS

4 Classification of ITE
4.2 Class A ITE
st
Replace the 1 paragraph by:
Class A ITE is a category of all other ITE which satisfies the class A ITE limits but not the class B ITE
limits. The following warning shall be included in the instructions for use:

8 General measurement conditions
8.4 Operation of the EUT
st
Delete the final sentence in the 1 paragraph so that it reads:
The operational conditions of the EUT shall be determined by the manufacturer according to the typical
use of the EUT with respect to the expected highest level of emission. The determined operational mode
and the rationale for the conditions shall be stated in the test report.

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SIST EN 55022:2011
- 3 - EN 55022:2010
nd
Replace the last sentence of original 2 paragraph by:
Any mechanical activities should be performed.

9 Method of measurement of conducted disturbance at mains terminals and
telecommunication ports
9.5 EUT arrangement
9.5.1 General
Replace the final paragraph with:
Where this standard gives options for testing particular requirements with a choice of test methods,
compliance can be shown against any of the test methods using the appropriate limit.

NOTE In any situation where the equipment is re-tested, the test method originally chosen should be used in
order to seek consistency of the results.

9.5.2 Tabletop equipment arrangement
In the last line of item a), add "Figure 4", before "Figure 5".

9.6.3.1 Voltage measurement at balanced telecommunication ports intended for connection to
unscreened balanced pairs
Add the following paragraph at the end of the subclause:
Where normal functioning cannot be achieved because of the impact of the ISN on the EUT, the
measurement shall be carried out using the method given in 9.6.3.5.

Annex G
Delete Annex G.

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SIST EN 55022:2011
EN 55022:2010 - 4 -
Annex ZA
Update the references to the following CISPR publications:
Publication Year Title EN/HD Year
CISPR 16-1-1 Specification for radio disturbance and immunity EN 55016-1-1 2007
A1 measuring apparatus and methods - A1 2007
Part 1-1: Radio disturbance and immunity
measuring apparatus - Measuring apparatus
CISPR 16-1-4 Specification for radio disturbance and immunity EN 55016-1-4 2007
measuring apparatus and methods -
Part 1-4: Radio disturbance and immunity
measuring apparatus - Ancillary equipment -
Radiated disturbances
Add the following references:
Publication Year Title EN/HD Year
CISPR 16-2-3 2003 Specification for radio disturbance and immunity EN 55016-2-3 2004
A1 2005 measuring apparatus and methods - A1 2005
Part 2-3: Methods of measurement of
disturbances and immunity – Radiated
disturbance measurements
___________

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SIST EN 55022:2011
- 5 - EN 55022:2010
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 essential requirements as given in Annex I Article 1(a) of the EC Directive
2004/108/EC, and essential requirements of Article 3.1(b) (emission only) of the EC Directive
1999/5/EC.

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

WARNING: Other requirements and other EC Directives may be applicable to the products
falling within the scope of this standard.
______________

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SIST EN 55022:2011

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SIST EN 55022:2011
CISPR 22
Edition 6.0 2008-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
Information technology equipment – Radio disturbance characteristics –
Limits and methods of measurement

Appareils de traitement de l'information – Caractéristiques des perturbations
radioélectriques – Limites et méthodes de mesure

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XC
CODE PRIX
ICS 33.100.10 ISBN 2-8318-9960-5
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 55022:2011
SC CIS/I/Publication CISPR 22 (2008), Sixth edition/I-SH 01
INFORMATION TECHNOLOGY EQUIPMENT –
RADIO DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT

INTERPRETATION SHEET 1
This interpretation sheet has been prepared by CISPR subcommittee I: Electromagnetic
compatibility of information technology equipment, multimedia equipment and receivers, of
IEC technical committee CISPR: International special committee on radio interference.
The text of this interpretation sheet is based on the following documents:
ISH Report on voting
CISPR/I/299/ISH CISPR/I/312/RVD

Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.
___________

Introduction:
th
At the CISPR SC I plenary, held on the 27 October 2007, a decision was taken to set the
maintenance date for CISPR 22, Edition 6 to 2012. As a result the work identified within
CISPR/I/279/MCR will not be started for the time being. At the subsequent meeting of CISPR
SC I WG3 it was decided that certain items within the MCR would benefit now from further
clarification and an interpretation sheet would be helpful to users of the standard, with the
intent of including this information in a future amendment to the standard.
This information does not change the standard; it serves only to clarify the points noted.
CISPR SC I WG3 hopes that these clarifications will be of use to users and especially
laboratories testing to CISPR 22, Edition 6.0. The document is based on the comments
received on CISPR/I/290/DC.
Interpretation:
1. Selection of Average detector
CISPR 22 defines limits for radiated emissions at frequencies between 1 GHz and 6 GHz with
respect to both average and peak detectors. CISPR 16-1-1 defines two types of Average
detector for use above 1 GHz. For the limits given in CISPR 22 the appropriate average
detector is the linear average detector defined in 6.4.1 of CISPR 16-1-1:2006 with its
Amendments 1:2006 and 2:2007.
October 2009 ICS 33.100.10

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SIST EN 55022:2011
2. Measurement of conducted emissions on cabinets containing multiple items of
equipment
Where the EUT is a cabinet or rack that contains multiple items of equipment that are
powered from an AC power distribution strip and where the AC power distribution strip is an
integral part of the EUT as declared by the manufacturer, the AC power line conducted
emissions should be measured on the input cable of power distribution strip that leaves the
cabinet or rack, not the power cables from the individual items of equipment. This is
consistent with the requirements in 9.5.1 paragraph 1 and sub paragraph c).

___________


October 2009 ICS 33.100.10

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SIST EN 55022:2011
– 2 – CISPR 22 © IEC:2008
CONTENTS

FOREWORD.5
INTRODUCTION.7
1 Scope and object .8
2 Normative references.8
3 Definitions .9
4 Classification of ITE.10
4.1 Class B ITE .11
4.2 Class A ITE .11
5 Limits for conducted disturbance at mains terminals and telecommunication ports.11
5.1 Limits of mains terminal disturbance voltage .11
5.2 Limits of conducted common mode (asymmetric mode) disturbance
at telecommunication ports .12
6 Limits for radiated disturbance .13
6.1 Limits below 1 GHz.13
6.2 Limits above 1 GHz .13
7 Interpretation of CISPR radio disturbance limit .14
7.1 Significance of a CISPR limit .14
7.2 Application of limits in tests for conformity of equipment in series production.14
8 General measurement conditions.15
8.1 Ambient noise.15
8.2 General arrangement.15
8.3 EUT arrangement .18
8.4 Operation of the EUT.20
9 Method of measurement of conducted disturbance at mains terminals and
telecommunication ports .21
9.1 Measurement detectors .21
9.2 Measuring receivers .21
9.3 Artificial mains network (AMN) .21
9.4 Ground reference plane .22
9.5 EUT arrangement .22
9.6 Measurement of disturbances at telecommunication ports.24
9.7 Recording of measurements .28
10 Method of measurement of radiated disturbance .28
10.1 Measurement detectors .28
10.2 Measuring receiver below 1 GHz.28
10.3 Antenna below 1 GHz .28
10.4 Measurement site below 1 GHz.29
10.5 EUT arrangement below 1 GHz.30
10.6 Radiated emission measurements above 1 GHz.30
10.7 Recording of measurements .30
10.8 Measurement in the presence of high ambient signals.31
10.9 User installation testing.31
11 Measurement uncertainty.31
Annex A (normative) Site attenuation measurements of alternative test sites .42
Annex B (normative) Decision tree for peak detector measurements.48

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SIST EN 55022:2011
CISPR 22 © IEC:2008 – 3 –
Annex C (normative) Possible test set-ups for common mode measurements .49
Annex D (informative) Schematic diagrams of examples of impedance stabilization
networks (ISN) .56
Annex E (informative) Parameters of signals at telecommunication ports .65
Annex F (informative) Rationale for disturbance measurements and methods on
telecommunications ports.68
Annex G (informative) Operational modes for some types of ITE .77
Bibliography .78

Figure 1 – Test site .32
Figure 2 – Minimum alternative measurement site .33
Figure 3 – Minimum size of metal ground plane .33
Figure 4 – Example test arrangement for tabletop equipment (conducted and radiated
emissions) (plan view).34
Figure 5 – Example test arrangement for tabletop equipment (conducted emission
measurement - alternative 1a).35
Figure 6 – Example test arrangement for tabletop equipment (conducted emission
measurement – alternative 1b) .35
Figure 7 – Example test arrangement for tabletop equipment (conducted emission
measurement – alternative 2) .36
Figure 8 – Example test arrangement for floor-standing equipment (conducted emission
measurement) .37
Figure 9 – Example test arrangement for combinations of equipment (conducted
emission measurement) .38
Figure 10 – Example test arrangement for tabletop equipment (radiated emission
measurement).38
Figure 11 – Example test arrangement for floor-standing equipment (radiated emission
measurement) .39
Figure 12 – Example test arrangement for floor-standing equipment with vertical riser
and overhead cables (radiated and conducted emission measurement) .40
Figure 13 – Example test arrangement for combinations of equipment (radiated
emission measurement) .41
Figure A.1 – Typical antenna positions for alternate site NSA measurements.45
Figure A.2 – Antenna positions for alternate site measurements for minimum
recommended volume .46
Figure B.1 – Decision tree for peak detector measurements .48
Figure C.1 – Using CDNs described in IEC 61000-4-6 as CDN/ISNs .50
Figure C.2 – Using a 150 Ω load to the outside surface of the shield ("in situ CDN/ISN") .51
Figure C.3 – Using a combination of current probe and capacitive voltage probe with a
table top EUT.52
Figure C.4 – Calibration fixture.54
Figure C.5 – Flowchart for selecting test method .55
Figure D.1 − ISN for use with unscreened single balanced pairs .56
Figure D.2 − ISN with high longitudinal conversion loss (LCL) for use with either one or
two unscreened balanced pairs .57
Figure D.3 − ISN with high longitudinal conversion loss (LCL) for use with one, two,
three, or four unscreened balanced pairs.58

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SIST EN 55022:2011
– 4 – CISPR 22 © IEC:2008
Figure D.4 − ISN, including a 50 Ω source matching network at the voltage measuring
port, for use with two unscreened balanced pairs.59
Figure D.5 − ISN for use with two unscreened balanced pairs .60
Figure D.6 − ISN, including a 50 Ω source matching network at the voltage measuring
port, for use with four unscreened balanced pairs .61
Figure D.7 − ISN for use with four unscreened balanced pairs .62
Figure D.8 − ISN for use with coaxial cables, employing an internal common mode
choke created by bifilar winding an insulated centre-conductor wire and an insulated
screen-conductor wire on a common magnetic core (for example, a ferrite toroid).62
Figure D.9 − ISN for use with coaxial cables, employing an internal common mode
choke created by miniature coaxial cable (miniature semi-rigid solid copper screen or
miniature double-braided screen coaxial cable) wound on ferrite toroids .63
Figure D.10 − ISN for use with multi-conductor screened cables, employing an internal
common mode choke created by bifilar winding multiple insulated signal wires and an
insulated screen-conductor wire on a common magnetic core (for example, a ferrite
toroid) .63
Figure D.11 − ISN for use with multi-conductor screened cables, employing an internal
common mode choke created by winding a multi-conductor screened cable on ferrite
toroids .64
Figure F.1 – Basic circuit for considering the limits with defined TCM impedance of 150 Ω.71
Figure F.2 – Basic circuit for the measurement with unknown TCM impedance .71
Figure F.3 – Impedance layout of the components used in Figure C.2.73
Figure F.4 – Basic test set-up to measure combined impedance of the 150 Ω and
ferrites .74

11
Table 1 – Limits for conducted disturbance at the mains ports of class A ITE.
Table 2 – Limits for conducted disturbance at the mains ports of class B ITE.12
Table 3 – Limits of conducted common mode (asymmetric mode) disturbance
at telecommunication ports in the frequency range 0,15 MHz to 30 MHz for class A
equipment.12
Table 4 – Limits of conducted common mode (asymmetric mode) disturbance at
telecommunication ports in the frequency range 0,15 MHz to 30 MHz for class B
equipment.12
Table 5 – Limits for radiated disturbance of class A ITE at a measuring distance of 10 m.13
Table 6 – Limits for radiated disturbance of class B ITE at a measuring distance of 10 m.13
Table 7 – Limits for radiated disturbance of Class A ITE at a measurement distance of 3 m.13
Table 8 – Limits for radiated disturbance of Class B ITE at a measurement distance of 3 m.14
Table 9 – Acronyms used in figures.32
Table A.1 – Normalized site attenuation (A (dB)) for recommended geometries with
N
broadband antennas .44
Table F.1 – Summary of advantages and disadvantages of the methods described in
Annex C.69

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SIST EN 55022:2011
CISPR 22 © IEC:2008 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
__________

INFORMATION TECHNOLOGY EQUIPMENT –
RADIO DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT



FOREWORD
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