EN 55016-1-2:2014

SLOVENSKI STANDARD
01-oktober-2014
1DGRPHãþD
SIST EN 55016-1-2:2005
SIST EN 55016-1-2:2005/A1:2005
SIST EN 55016-1-2:2005/A2:2007
Specifikacija za merilne naprave in metode za merjenje radijskih motenj in
odpornosti - 1-2. del: Merilne naprave za merjenje radijskih motenj in odpornosti -
Pomožna oprema za meritve motenj po vodnikih (CISPR 16-1-2:2014)
Specification for radio disturbance and immunity measuring apparatus and methods -
Part 1-2: Radio disturbance and immunity measuring apparatus - Coupling devices for
conducted disturbance measurements
Anforderungen an Geräte und Einrichtungen sowie Festlegung der Verfahren zur
Messung der hochfrequenten Störaussendung (Funkstörungen) und Störfestigkeit - Teil
1-2: Geräte und Einrichtungen zur Messung der hochfrequenten Störaussendung
(Funkstörungen) und Störfestigkeit - Zusatz-/Hilfseinrichtungen - Leitungsgeführte
Störaussendung
Ta slovenski standard je istoveten z: EN 55016-1-2:2014
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
33.100.20 Imunost Immunity
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 55016-1-2

NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2014
ICS 33.100.10; 33.100.20 Supersedes EN 55016-1-2:2004
English Version
Specification for radio disturbance and immunity measuring
apparatus and methods - Part 1-2: Radio disturbance and
immunity measuring apparatus - Coupling devices for conducted
disturbance measurements
(CISPR 16-1-2:2014)
Spécifications des méthodes et des appareils de mesure Anforderungen an Geräte und Einrichtungen sowie
des perturbations radioélectriques et de l'immunité aux Festlegung der Verfahren zur Messung der hochfrequenten
perturbations radioélectriques - Partie 1-2: Appareils de Störaussendung (Funkstörungen) und Störfestigkeit - Teil 1-
mesure des perturbations radioélectriques et de l'immunité 2: Geräte und Einrichtungen zur Messung der
aux perturbations radioélectriques - Dispositifs de couplage hochfrequenten Störaussendung (Funkstörungen) und
pour la mesure des perturbations conduites Störfestigkeit - Koppeleinrichtungen zur Messung der
(CISPR 16-1-2:2014) leitungsgeführten Störaussendung
(CISPR 16-1-2:2014)
This European Standard was approved by CENELEC on 2014-04-25. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 55016-1-2:2014 E
Foreword
The text of document CISPR/A/1051/FDIS, future edition 2 of CISPR 16-1-2, prepared by SC A
“Radio-interference measurements and statistical methods” of IEC/TC CISPR “International special
committee on radio interference” was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 55016-1-2:2014.
The following dates are fixed:
• latest date by which the document has to be (dop) 2015-01-25
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-04-25
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 55016-1-2:2004.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard CISPR 16-1-2:2014 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

CISPR 16-2 Series NOTE Harmonized as EN 55016-2 Series (not modified).
CISPR 16-4 Series NOTE Only Part 4-2 harmonized as EN 55016-4-2.
CISPR 22 NOTE Harmonized as EN 55022.

- 3 - EN 55016-1-2:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year
CISPR 16-1-1 2010 Specification for radio disturbance and EN 55016-1-1 2010
immunity measuring apparatus and
methods -
Part 1-1: Radio disturbance and immunity
measuring apparatus - Measuring
apparatus
CISPR 16-2-1 2014 Specification for radio disturbance and EN 55016-2-1 2014
immunity measuring apparatus and
methods -
Part 2-1: Methods of measurement of
disturbances and immunity - Conducted
disturbance measurements
CISPR 16-4-2 2011 Specification for radio disturbance and EN 55016-4-2 2011
immunity measuring apparatus and
methods -
Part 4-2: Uncertainties, statistics and limit
modelling - Measurement instrumentation
uncertainty
IEC 61000-4-6 2008 Electromagnetic compatibility (EMC) - EN 61000-4-6 2009
Part 4-6: Testing and measurement
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
IEC 60050 Series International Electrotechnical Vocabulary - - -
Part 802: Ultrasonics
CISPR 16-1-2 ®
Edition 2.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM

Specification for radio disturbance and immunity measuring apparatus and

methods –
Part 1-2: Radio disturbance and immunity measuring apparatus – Coupling

devices for conducted disturbance measurements

Spécifications des méthodes et des appareils de mesure des perturbations

radioélectriques et de l'immunité aux perturbations radioélectriques –

Partie 1-2: Appareils de mesure des perturbations radioélectriques et de

l'immunité aux perturbations radioélectriques – Dispositifs de couplage pour la

mesure des perturbations conduites

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XD
ICS 33.100.10, 33.100.20 ISBN 978-2-8322-1412-1

– 2 – CISPR 16-1-2 © IEC:2014
CONTENTS
FOREWORD . 7
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and abbreviations . 10
3.1 Terms and definitions . 10
3.2 Abbreviations . 12
4 Artificial mains networks . 12
4.1 General . 12
4.2 AMN impedance . 12
4.3 50 Ω/50 µH + 5 Ω artificial mains V-network (V-AMN) for use in the
frequency range 9 kHz to 150 kHz . 13
4.4 50 Ω/50 µH artificial mains V-network (V-AMN) for use in the frequency
range 0,15 MHz to 30 MHz . 14
4.5 50 Ω/5 µH + 1 Ω artificial mains V-network (V-AMN) for use in the
frequency range 150 kHz to 108 MHz . 15
4.6 150 Ω artificial mains V-network (V-AMN) for use in the frequency range
150 kHz to 30 MHz . 17
4.7 150 Ω artificial mains delta-network (∆-AMN) for use in the frequency
range 150 kHz to 30 MHz . 17
4.7.1 General parameters . 17
4.7.2 Balance of the 150 Ω artificial mains delta-network . 17
4.8 Isolation . 18
4.8.1 Requirement . 18
4.8.2 Measurement procedure . 18
4.9 Current carrying capacity and series voltage drop . 19
4.10 Modified reference ground connection . 19
4.11 Measurement of the voltage division factor of artificial mains V-networks . 20
5 Current and voltage probes . 21
5.1 Current probes . 21
5.1.1 General . 21
5.1.2 Construction . 21
5.1.3 Characteristics. 21
5.2 Voltage probe . 22
5.2.1 High impedance voltage probe . 22
5.2.2 Capacitive voltage probe . 23
6 Coupling units for conducted current immunity measurement . 25
6.1 General . 25
6.2 Characteristics . 25
6.2.1 General . 25
6.2.2 Impedance . 25
6.2.3 Insertion loss . 25
7 Coupling devices for measuring signal lines . 26
7.1 General . 26
7.2 Requirements for AANs (or Y-networks) . 26
7.3 Requirements for artificial networks for coaxial and other screened
cables . 30
8 The artificial hand and series RC element . 30

CISPR 16-1-2 © IEC:2014 – 3 –
8.1 General . 30
8.2 Construction of the artificial hand and RC element . 30
8.3 The use of the artificial hand . 31
9 CDNE for measurement of disturbance voltage in frequency range 30 MHz to
300 MHz . 34
9.1 Instrumentation . 34
9.1.1 General . 34
9.1.2 Description of the CDNE measurement . 35
9.1.3 Description of the RGP . 35
9.2 Technical requirements for the CDNE-X . 36
9.2.1 Mechanical and electrical parameters . 36
9.2.2 Validation of the CDNE . 36
9.3 Technical requirement for the RGP . 39
Annex A (normative) AMNs . 40
A.1 General . 40
A.2 An example of the 50 Ω/50 µH + 5 Ω artificial mains V-network . 40
A.3 An example of the 50 Ω/50 µH artificial mains V-network . 41
A.4 Examples of the 50 Ω/5 µH + 1 Ω artificial mains V-network . 41
A.5 An example of the 150 Ω artificial mains V-network . 42
A.6 Example of the 150 Ω artificial mains delta-network . 43
A.7 Example design for an AMN with a 50 µH inductor . 44
A.7.1 The inductor . 44
A.7.2 The case of the inductor . 45
A.7.3 Isolation of the inductor . 46
A.8 Measurement of the voltage division factor of an artificial mains V-
network . 46
Annex B (informative) Construction, frequency range, and calibration of current probes . 49
B.1 Physical and electrical considerations for current probes . 49
B.2 Equivalent electrical circuit of current probe . 51
B.3 Detrimental effects of current probe measurements . 51
B.4 Typical frequency response characteristics of current probes. 52
B.5 A shielding structure for use with current probes . 53
B.5.1 General . 53
B.5.2 Theoretical model . 54
B.5.3 Construction of the shielding structure . 55
B.5.4 High-pass filter . 55
B.6 Calibration of current probes . 55
Annex C (informative) Construction of the coupling units for current injection for the
frequency range 0,15 MHz to 30 MHz . 59
C.1 Coupling unit type A for coaxial antenna input . 59
C.2 Coupling unit type M, for mains leads . 59
C.3 Coupling unit type L, for loudspeaker leads . 62
C.4 Coupling unit type Sw, for audio-frequency signals . 63
C.5 Coupling unit type Sw, for audio, video, and control signals . 63
Annex D (informative) Principle of operation and examples of coupling units for
conducted current immunity measurements . 65
D.1 Principle of operation . 65
D.2 Types of unit and their construction . 65

– 4 – CISPR 16-1-2 © IEC:2014
Annex E (normative) Example and measurement of the parameters of the asymmetric
artificial network (AAN) . 69
E.1 Description of an example of an AAN: the T-network . 69
E.2 Measurements of the parameters of an asymmetric artificial network
(AAN) . 69
Annex F (normative) Example and measurement of the parameters of the AN for
coaxial and other screened cables . 75
F.1 Description of ANs for coaxial and other screened cables . 75
F.2 Measurements of parameters of an AN for coaxial and other screened
cables . 75
Annex G (informative) Construction and evaluation of capacitive voltage probe . 77
G.1 General . 77
G.2 Physical and electrical considerations for CVP . 77
G.3 Determination of the frequency response of the voltage division factor . 77
G.4 Method of measurement to determine the influence of external electric
fields . 78
G.4.1 Influence of external electric field . 78
G.4.2 Method of measurement to determine the influence of the
external electric field . 78
G.5 Pulse response . 78
G.6 Voltage division factor dependence . 79
Annex H (informative) Rationale for the introduction of a minimum decoupling factor
between mains and EUT/receiver ports for the V-AMN. 84
Annex I (informative) Rationale for the introduction of a phase tolerance for the V-
AMN input impedance . 85
Annex J (informative) Example CDNE set-up diagrams . 87
J.1 CDNE-M2 and CDNE-M3 . 87
J.2 CDNE-Sx . 89
Bibliography . 90

Figure 1 – Impedance (magnitude and phase) of the V-network for Band A (see 4.3,
the relevant frequency range is from 9 kHz to 150 kHz) . 16
Figure 2 – Impedance (magnitude and phase) of the V-network for Band B (see 4.4) . 16
Figure 3 – Impedance (magnitude and phase) of the V-network for Bands B and C
(from 150 kHz to 108 MHz; see 4.5) . 17
Figure 4 – Method for checking the balance of the arrangement for the measurement of
symmetrical voltages . 18
Figure 5 – Example of artificial mains 50 Ω/50 µH + 5 Ω V-network (see 4.3 and A.2) . 20
Figure 6 – Example of artificial mains V-networks, 50 Ω/50 µH, 50 Ω /5 µH + 1 Ω or
150 Ω (see 4.4, 4.5, 4.6, A.3, A.4 and A.5, respectively) . 20
Figure 7 – Circuit for RF voltage measurement on supply mains . 23
Figure 8 – Circuit used to make voltage measurements between a cable and reference
ground . 24
Figure 9 – Measuring set-up to check the insertion loss of the coupling units in the
frequency range 30 MHz to 150 MHz . 26
Figure 10 – Principal circuit and LCL requirements of an AAN . 28
Figure 11 – Application of the artificial hand . 33
Figure 12 – Examples of application of artificial hand to ITE . 34
Figure 13 – Arrangement for validation of a CDNE . 37

CISPR 16-1-2 © IEC:2014 – 5 –
Figure 14 – IMA arrangement for correcting the electrical length . 38
Figure 15 – Test arrangement for the measurement of the symmetric impedance (Z ) . 39
DM
Figure A.1 – Example of an alternative 50 Ω/5 µH + 1 Ω V-AMN for devices used with
low impedance power sources . 42
Figure A.2 – Example of a ∆-AMN for a measuring receiver with unbalanced input . 43
Figure A.3 – Schematic of 50 µH inductor . 45
Figure A.4 – General view of an AMN . 45
Figure A.5 – Attenuation of an AMN filter . 46
Figure A.6 – Test set-up for determining the voltage division factor . 47
Figure B.1 – Typical current probe configuration . 50
Figure B.2 – High-pass filter with cut-off frequency of 9 kHz . 52
Figure B.3 – Transfer impedance of typical current probes. 53
Figure B.4 – Set-up for current measurement using the AMN . 54
Figure B.5 – Shield configuration used with current transformer . 55
Figure B.6 – Schematic diagram of circuit with coaxial adaptor and current probe
transfer admittance Y measurement . 56
T
Figure B.7 – Transfer admittance Y as a function of frequency . 57
T
Figure B.8 – Return loss of the coaxial adaptor terminated with 50 Ω and with the
current probe (also terminated with 50 Ω) inside . 57
Figure B.9 – Current probe between the two halves of the coaxial adaptor. 58
Figure C.1 – Example of coupling unit type A, for coaxial input schematic diagram and
construction details (see C.1 and D.2) . 60
Figure C.2 – Example of coupling unit type M, for mains leads, schematic diagram and

construction details (see C.2 and D.2) . 61
Figure C.3 – Example of coupling unit type L for loudspeaker leads, schematic diagram
and simplified construction drawing (see D.2) . 62
Figure C.4 – Example of coupling unit type Sw, for audio signals. Schematic diagram
and simplified construction drawing (see D.2) . 63
Figure C.5 – Example of coupling unit type Sw, for audio, video and control signals,

schematic diagram and simplified construction drawing (see D.2) . 64
Figure D.1 – General principle of the current-injection method (see D.1) . 67
Figure D.2 – Coupling unit type Sr with load resistances – Schematic diagram and
simplified construction drawing (see D.2) . 68
Figure E.1 – Example of a T-network circuit for one pair of wires . 70
Figure E.2 – Arrangement for the termination impedance measurement . 71
Figure E.3 – Arrangement for LCL probe verification . 71
Figure E.4 – Arrangement for the LCL probe calibration using an L-circuit . 72
Figure E.5 – LCL measurement of the AAN using an LCL probe . 72
Figure E.6 – Test set-up for the decoupling attenuation (isolation) of the AAN
V
a = 20lg − a in dB for asymmetric signals between AE port and EUT port . 73
decoup vdiv
V
Figure E.7 – Test set-up for the insertion loss (symmetric) of the AAN . 73
Figure E.8 – Calibration test set-up for the AAN voltage division factor of the
V
asymmetric circuit: F = a = 20lg  in dB . 74
AAN vdiv
V
Figure F.1 – Example of a coaxial cable AN . 75

– 6 – CISPR 16-1-2 © IEC:2014
Figure F.2 – Test set-up for the coaxial and screened cable AN voltage division factor
V
F = 20lg in dB . 76
AN
V
Figure G.1 – Configuration of a CVP . 80
Figure G.2 – Equivalent circuit of a CVP . 81
Figure G.3 – Test set-up to measure the frequency response . 81
Figure G.4 – Electrostatic coupling model and its equivalent circuit . 82
Figure G.5 – Test set-up to measure the reduction, through the shielding effect, of the
influence of the external electric field caused by electrostatic coupling . 82
Figure G.6 – Conversion factor deviation when cable position is changed . 83
Figure G.7 – Investigation result of the cable radius dependence . 83
Figure H.1 – Isolation measurement arrangement . 84
Figure I.1 – Definition of impedance magnitude and phase tolerances . 85
Figure J.1 – CDNE-M3 with internal attenuator a of at least 6 dB . 87
meas
Figure J.2 – CDNE-M2 with internal attenuator a of at least 6 dB . 88
meas
Figure J.3 – CDNE-Sx for screened cable with x internal wires and an internal
attenuator of at least 6 dB . 89

Table 1 – Magnitudes and phase angles of the V-network (see Figure 1) . 13
Table 2 – Magnitudes and phase angles of the V-network (see Figure 2) . 14
Table 3 – Magnitudes and phase angles of the V-network (see Figure 3) . 15
Table 4 – Values of minimum isolation for V-networks . 18
Table 5 – Characteristics of the AAN for the measurement of asymmetric disturbance
voltage . 29
Table 6 – Characteristics of artificial networks for coaxial and other screened cables . 30
Table 7 – Electrical parameters of the CDNE-X . 36
Table A.1 – Component values of 50 Ω/50 µH + 5 Ω V-network . 40
Table A.2 – Component values of 50 Ω/50 µH V-network . 41
Table A.3 – Component values of 50 Ω/5 µH + 1 Ω V-network . 42
Table A.4 – Component values of the 150 Ω V-network . 43
Table A.5 – Component values of the 150 Ω delta-network . 44

CISPR 16-1-2 © IEC:2014 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
_____________
SPECIFICATION FOR RADIO DISTURBANCE AND IMMUNITY
MEASURING APPARATUS AND METHODS –

Part 1-2: Radio disturbance and immunity measuring apparatus –
Coupling devices for conducted disturbance measurements

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 16-1-2 has been prepared by subcommittee A: Radio-
interference measurements and statistical methods, of IEC technical committee CISPR:
International special committee on radio interference.
This second edition cancels and replaces the first edition published in 2003 and its
Amendment 1 (2004) and Amendment 2 (2006). This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) requirements from CISPR 22 for the AAN have been copied to this standard;
b) the CDNE for measurement of disturbance voltage in the frequency range 30 MHz to
300 MHz is added;
c) additional maintenance is included.

– 8 – CISPR 16-1-2 © IEC:2014
It has the status of a basic EMC publication in accordance with IEC Guide 107,
Electromagnetic compatibility – Guide to the drafting of electromagnetic compatibility
publications.
The text of this standard is based on the following documents:
FDIS Report on voting
CISPR/A/1051/FDIS CISPR/A/1059/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.
A list of all parts of CISPR 16 series, under the general title Specification for radio
disturbance and immunity measuring apparatus and methods, can be found on the IEC
website.
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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
CISPR 16-1-2 © IEC:2014 – 9 –
SPECIFICATION FOR RADIO DISTURBANCE AND IMMUNITY
MEASURING APPARATUS AND METHODS –

Part 1-2: Radio disturbance and immunity measuring apparatus –
Coupling devices for conducted disturbance measurements

1 Scope
This part of the CISPR 16 series specifies the characteristics and performance of equipment
for the measurement of radio disturbance voltages and currents in the frequency range 9 kHz
to 1 GHz.
NOTE In accordance with IEC Guide 107, CISPR 16 is a basic EMC standard for use by product committees of
the IEC. As stated in Guide 107, product committees are responsible for determining the applicability of the EMC
standard. CISPR and its sub-committees are prepared to co-operate with product committees in the evaluation of
the value of particular EMC tests for specific products.
Specifications for ancillary apparatus are included for artificial mains networks, current and
voltage probes and coupling units for current injection on cables.
It is intended that the requirements of this publication are fulfilled at all frequencies and for all
levels of radio disturbance voltages and currents within the CISPR indicating range of the
measuring equipment.
Methods of measurement are covered in the CISPR 16-2 series, and further information on
radio disturbance is given in CISPR 16-3, while uncertainties, statistics and limit modelling are
covered in the CISPR 16-4 series.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
CISPR 16-1-1:2010, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
apparatus
CISPR 16-2-1:2014, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 2-1: Methods of measurement of disturbances and immunity – Conducted
disturbance measurements
CISPR 16-4-2:2011, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 4-2: Uncertainties, statistics and limit modelling – Measurement
instrumentation uncertainty
IEC 60050 (all parts), International Electrotechnical Vocabulary (available at
)
IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
– 10 – CISPR 16-1-2 © IEC:2014
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050, as well as
the following apply.
3.1.1
ancillary equipment
transducers connected to a measuring receiver or (test) signal generator and used in the
disturbance signal transfer between the EUT and the measuring or test equipment
Note 1 to entry: Examples of transducers are current and voltage probes and artificial networks.
3.1.2
associated equipment
AE
apparatus that is not part of the system under test but is required for the functioning of the
EUT
3.1.3
asymmetric voltage
radio-frequency disturbance voltage appearing between the electrical mid-point of the mains
terminals and ground, sometimes called the common mode voltage
Note 1 to entry: If V is the vector voltage between one of the mains terminals and ground, and V is the vector
a b
voltage between the other mains terminal and ground, the asymmetric voltage is half the vector sum of V and V ,
a b
i.e. (V + V )/2.
a b
3.1.4
symmetric voltage
radio-frequency disturbance voltage appearing between the two wires in a two-wire circuit,
such as a single-phase mains supply, sometimes called the differential mode voltage
Note 1 to entry: The symmetric voltage is the vector difference (V − V ).
a b
3.1.5
unsymmetric voltage
amplitude of the vector voltage, V or V defined in 3.1.3 and 3.1.4
a b
Note 1 to entry: The unsymmetric voltage is the voltage measured by the use of an artificial mains V-network.
Note 2 to entry: See notes in 3.1.3 and 3.1.4 for details on V and V .
a b
3.1.6
artificial mains network
AMN
network that provides a defined impedance to the EUT at radio frequencies, couples the
disturbance voltage to the measuring receiver, and decouples the test circuit from the supply
mains
Note 1 to entry: There are two basic types of this network, the V-network (V-AMN) which couple the unsymmetric
voltages, and the delta-network (∆-AMN), which couple the symmetric and the unsymmetric voltages separately.
Note 2 to entry: The terms line impedance stabilization network (LISN) and V-AMN are used interchangeably .

CISPR 16-1-2 © IEC:2014 – 11 –
3.1.7
asymmetric artificial network
AAN
network used to measure (or inject) asymmetric (common mode) voltages on unshielded
symmetric signal (e.g. telecommunication) lines while rejecting the symmetric (differential
mode) signal
Note 1 to entry: The term “Y-network” is a synonym for AAN.
3.1.8
auxiliary equipment
AuxEq
peripheral equipment that is part of the system under test
3.1.9
coupling/decoupling network
CDN
artificial network for the measurement or injection of signals on one circuit while preventing
signals from being measured or injected on another circuit
3.1.10
CDNE-X
coupling/decoupling network for emission measurement in the frequency range 30 MHz to
300 MHz; where the “X” suffix can be “M2” for unscreened two-wire mains, DC or control
ports, “M3” for unscreened three-wire mains, DC or control ports, and “Sx” for screened cable
with x internal wires
Note 1 to entry: See Annex J for further details on the CDNE-X.
3.1.11
equipment under test
EUT
equipment (devices, appliances and systems) subjected to EMC (emission) compliance tests
3.1.12
impedance measurement adaptor
IMA
metallic vertical plane, 0,1 m by 0,1 m, bonded to the reference ground plane, which contains
connection ports for a network analyzer and a CDNE
3.1.13
longitudinal conversion loss
LCL
in a one- or two-port network, a measure of the degree of unwanted transverse (symmetric
mode) signal produced at the terminals of the network due to the pr
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