CISPR 22:2008

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

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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
CODE PRIX XC
ICS 33.100.10 ISBN 2-8318-9960-5
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
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
– 1 –
SC CIS I/Publication CISPR 22:2008, Sixth edition/I-SH 02
INFORMATION TECHNOLOGY EQUIPMENT –
RADIO DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT

INTERPRETATION SHEET 2
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//323/ISH CISPR/I/326/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 3 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.
The first draft of an interpretation sheet CISPR/I/290/DC addressed the 3 items, however it
was clear from the comments received (CISPR/I/293A/INF) that further work was required on
rd
the 3 item related to ISN selection, and it was decided that this would be the subject of a
separate document.
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 22:2008 (Edition 6.0).
Selection of ISN for unscreened balanced multi-pair cables
Subclause 9.6.3.1 of CISPR 22 states that:
“When disturbance voltage measurements are performed on a single unscreened
balanced pair, an adequate ISN for two wires shall be used; when performed on
unscreened cables containing two balanced pairs, an adequate ISN for four wires shall
be used; when performed on unscreened cables containing four balanced pairs, an
adequate ISN for eight wires shall be used (see Annex D)”
Therefore the selection of ISN is based on the number of pairs physically in the cable, not the
number of pairs actually used by the interface in question.
April 2010 ICS 33.100.10 French text overleaf

– 2 –
However, selection of a suitable ISN design from the examples given in Annex D requires
further consideration. The ISN designs given in Figures D.4 to D.7 are only appropriate for
use where all of the balanced pairs in the cable are ‘active’ and hence their use requires a
more detailed knowledge of the EUT port being tested. The ISN designs given in Figures D.1
to D.3 have no such limitation and are better suited to applications where the actual use of
the pairs is unknown.
The ISN designs given in Figures D.2 and D.3 are also suitable for measurements on
unscreened cables containing fewer balanced pairs than the maximum number of pairs the
ISN is designed for (see example 2).
The following definitions have been developed to help in determining what should be
considered an ‘active’ pair of conductors:
An active pair is a pair of conductors that completes an active digital, analogue,
or power circuit, or is terminated in a defined impedance, or is connected to earth or the
equipment frame/chassis.
NOTE These circuits include such applications as "Power over Ethernet".
A circuit is an active circuit when it is in a state that is performing its intended function,
which may include communications, voltage/current sensing, impedance matching or
power supply.
NOTE A conductor with no intended function is not part of an active circuit.
A measurement using an ISN described in Figures D.4 to D.7, when not all of the pairs are
‘active’, may result in a significant error in the measured emissions. It is therefore important
that test laboratories determine on which of the designs given in the annexes their particular
ISNs are based. From this they can then determine if they need to establish the number of
‘active’ pairs within the cable or not and then whether their ISNs are suitable for the port
being measured or whether an alternative measurement technique needs to be used.
This is applicable when measuring in accordance with 9.6.3.1 or 9.6.3.2.
It is recommended that test reports should make reference to:
• the ISN category used;
• the Annex D figure corresponding to their particular ISN design;
• the total number of pairs in the cable and number of these that where active.
Example 1:
The EUT has an Ethernet port to which either a CAT 5 or 6 cable is connected. Typically
these cables have four pairs requiring use of a four pair ISN. Transmission using 1000Base-T
Ethernet protocol uses all four pairs of a typical cable. Transmission using 10Base-T and 100
Base-T Ethernet protocol uses only two of the four pairs for communication. One of the
following ISNs could therefore be used:
1) ISN as shown in Figure D.3, or
2) ISN as shown in Figures D.6 or D.7 if it is known that all the pairs within the cable are
‘active’. This would be the case if a 1000BaseT Ethernet protocol were being used.
These ISNs would also be suitable for 10BaseT or 100BaseT protocol if the unused
pairs have controlled terminations in the EUT port by design, making all pairs ‘active’
from an EMC perspective.
Should an EUT with an Ethernet port be provided with a cable that contains only 2 pairs within
it, then any of the following types of ISN could be used: D2, D3, D4 or D5.
April 2010 ICS 33.100.10 French text overleaf

– 3 –
Example 2:
The EUT has a single ADSL port and is provided with a cable containing 2 pairs. ADSL is a
single pair system so only 1 pair is active. The following ISNs could be used:
1) ISN as shown in Figure D.2 or D.3.
Cable length between ISN and EUT when measuring telecommunication ports
Subclause 9.5.1 of CISPR 22 requires that the distance between the ISN and the EUT be
nominally 0.8m and also clause 9.5.2 states that:
“Signal cables shall be positioned for their entire lengths, as far as possible, at a
nominal distance of 0,4 m from the ground reference plane (using a non-conductive
fixture, if necessary).”
No other requirement is given on the actual length of the cable to be used.
Measurements have shown that non-inductive bundling of any excess cable can result in
slightly higher emission levels measured at the ISN.
It is therefore recommended that the cable between the telecommunication port and the ISN
should be kept as short as possible, in order to avoid the need to bundle any excess, while
maintaining the requirements given in 9.5.1 and 9.5.2.

April 2010 ICS 33.100.10 French text overleaf

– 1 –
SC CIS/I/Publication CISPR 22 (2008), Sixth edition/I-SH 03
INFORMATION TECHNOLOGY EQUIPMENT –
RADIO DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT

INTERPRETATION SHEET 3
T3his interpretation sheet has been prepared by 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/402/ISH CISPR/I/408/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:
At the CISPR SC I plenary, held on the 19th October 2011, it was noted that some
laboratories and manufacturers are having difficulty understanding Figure C.5 in the standard
and are applying the wrong branch in the decision tree to identify the correct method for
testing different types of equipment with a telecommunication port .
This information does not change the standard; it serves only to clarify the point 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 or Edition 5. The document is based on the
comments received on CISPR/I/402/ISH.
Interpretation:
Figure C.5 provides a flowchart to correctly identify the process and limits for measuring
conducted emissions on a telecommunications port.
The first question to be answered is “Is the EUT port a telecommunications port as defined in
clause 3.6?” The following interpretation assumes the response to this first question is “yes”.
The intention of the next part of the flow chart is to relate the telecommunication port being
measured to the type of cable or network to which it is to be connected. The purpose here is
to guide the user to the appropriate test method(s) that are defined in the standard for these
cable/network types.
The user should determine which of the options given best describes the type of cable or
network that the telecommunication port is ultimately connected to. The following
interpretations provide further guidance on the cable or network options given:
April 2012 ICS 33.100.10
– 2 –
“Unscreened balanced pair” should be interpreted as a cable or network consisting of a single
pair or multiple pairs of balanced unscreened twisted pair conductors, for example those
categorized as CAT5, CAT6 etc in accordance with ANSI/TIA/EIA-568-A.
“Screened or Coaxial” should be interpreted as a cable or network where there is an outer
metallic foil or braid that encompasses all the other conductors within the cable.
“Mains” should be interpreted as any cable or network that is intended to carry AC mains
power, whether or not it carries other signals; generally these contain 2 or 3 untwisted
conductors.
“Other” should be interpreted as a cable or network whose definition is not covered by the
other three definitions. You will note that within the flowchart the user may also be directed to
this option when suitable test methods do not exist within the Unscreened balanced pair
option.
April 2012 ICS 33.100.10
– 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

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

– 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

Table 1 – Limits for conducted disturbance at the mains ports of class A ITE . 11
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

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
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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. 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 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 IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
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 22 has been prepared by CISPR subcommittee I:
Electromagnetic compatibility of information technology equipment, multimedia equipment and
receivers.
This sixth edition of CISPR 22 cancels and replaces the fifth edition published in 2005, its
Amendment 1 (2005) and Amendment 2 (2006).This edition constitutes a minor revision.
The document CISPR/I/265/FDIS, circulated to the National Committees as Amendment 3, led
to the publication of the new edition.

– 6 – CISPR 22  IEC:2008
The text of this standard is based on the fifth edition, Amendment 1, Amendment 2 and the
following documents:
FDIS Report on voting
CISPR/I/265/FDIS CISPR/I/271/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 the base publication and its amendments will
remain unchanged until the maintenance result 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 interpretation sheets 1 (October 2009), 2 (April 2010) and 3 (April 2012)
have been included in this copy.

CISPR 22  IEC:2008 – 7 –
INTRODUCTION
The scope is extended to the whole radio-frequency range from 9 kHz to 400 GHz, but limits
are formulated only in restricted frequency bands, which is considered sufficient to reach
adequate emission levels to protect radio broadcast and telecommunication services, and to
allow other apparatus to operate as intended at reasonable distance.

– 8 – CISPR 22  IEC:2008
INFORMATION TECHNOLOGY EQUIPMENT –
RADIO DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT

1 Scope and object
This International Standard applies to ITE as defined in 3.1.
Procedures are given for the measurement of the levels of spurious signals generated by the
ITE and limits are specified for the frequency range 9 kHz to 400 GHz for both class A and
class B equipment. No measurements need be performed at frequencies where no limits are
specified.
The intention of this publication is to establish uniform requirements for the radio disturbance
level of the equipment contained in the scope, to fix limits of disturbance, to describe methods
of measurement and to standardize operating conditions and interpretation of results.
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 60083:2006, Plugs and socket-outlets for domestic and similar general use standardized in
member countries of IEC
IEC 61000-4-6:2003, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
Amendment 1 (2004)
Amendment 2 (2006)
CISPR 11:2003, Industrial, scientific, and medical (ISM) radio-frequency equipment – Electro-
magnetic disturbance characteristics – Limits and methods of measurement
Amendment 1 (2004)
CISPR 13:2001, Sound and television broadcast receivers and associated equipment – Radio
disturbance characteristics – Limits and methods of measurement
Amendment 1 (2003)
Amendment 2 (2006)
CISPR 16-1-1:2006, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
apparatus
Amendment 1 (2006)
Amendment 2 (2007)
___________
There exists a consolidated edition 2.2 (2006) including edition 2.0, its Amendment 1 (2004) and its
Amendment 2 (2006).
There exists a consolidated edition 4.1 (2004) including edition 4.0 and its Amendment 1 (2004).
There exists a consolidated edition 4.2 (2006) including edition 4.0, its Amendment 1 (2003) and its
Amendment 2 (2006).
There exists a consolidated edition 2.2 (2007) including edition 2.0, its Amendment 1 (2006) and its
Amendment 2 (2007).
CISPR 22  IEC:2008 – 9 –
CISPR 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 disturbances
Amendment 1 (2004)
Amendment 2 (2006)
CISPR 16-1-4:2007, Specification for radio disturbance and 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 immunity measuring apparatus and
methods – Part 2-3: Methods of measurement of disturbances and immunity – Radiated
disturbance measurements
CISPR 16-4-2:2003, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 4-2: Uncertainties, statistics and limit modelling – Uncertainty in EMC
measurements
3 Definitions
For the purposes of this document the following definitions apply:
3.1
information 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.
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.
3.2
equipment under test (EUT)
representative ITE or functionally interactive group of ITE (system) which includes one or more
host unit(s) and is used for evaluation purposes
3.3
host unit
part of an ITE system or unit that provides the mechanical housing for modules, which may
contain radio-frequency sources, and may provide power distribution to other ITE. Power
distribution may be a.c., d.c., or both between the host unit(s) and modules or other ITE
___________
There exists a consolidated edition 1.2 (2006) including edition 1.0, its Amendment 1 (2004) and its
Amendment 2 (2006).
There exists a consolidated edition 2.1 (2008) including edition 2.0 and its Amendment 1 (2007).

– 10 – CISPR 22  IEC:2008
3.4
module
part of an ITE which provides a function and
...