EN IEC 62153-4-7:2021/A1:2025

SLOVENSKI STANDARD
01-februar-2026
Preskusne metode za kovinske kable in druge pasivne komponente - 4-7. del:
Elektromagnetna združljivost (EMC) - Preskusna metoda za meritve prehodne
impedance ZT in zaslonskega slabljenja aS ali sklopnega slabljenja aC konektorjev
in sestavov - Metoda "cev v cevi" - Dopolnilo A1 (IEC 62153-4-7:2021/AMD1:2025)
Metallic cables and other passive components test methods - Part 4-7: Electromagnetic
compatibility (EMC) -Test method for measuring of transfer impedance ZT and screening
attenuation aS or coupling attenuation aC of connectors and assemblies - Triaxial tube in
tube method (IEC 62153-4-7:2021/AMD1:2025)
Prüfverfahren für metallene Kabel und andere passive Bauteile - Teil 4-7:
Elektromagnetische Verträglichkeit (EMV) - Prüfverfahren zur Messung des
Kopplungswiderstands ZT und der Schirmdämpfung aS oder Kopplungsdämpfung aC
von Steckverbindern und Baugruppen - Triaxiales Rohr-in-Rohr-Verfahren (IEC 62153-4-
7:2021/AMD1:2025)
Méthodes d’essai des câbles métalliques et autres composants passifs - Partie 4-7:
Compatibilité électromagnétique (CEM) - Méthode d’essai pour mesurer l’impédance de
transfert, ZT,et l’affaiblissement d’écrantage, aS,ou l’affaiblissement de couplage, aC,
des connecteurs et des cordons - Méthode triaxiale en tubes concentriques (IEC 62153-
4-7:2021/AMD1:2025)
Ta slovenski standard je istoveten z: EN IEC 62153-4-7:2021/A1:2025
ICS:
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
33.120.10 Koaksialni kabli. Valovodi Coaxial cables. Waveguides
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62153-4-7:2021/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM December 2025
ICS 33.100.10; 33.120.10
English Version
Metallic cables and other passive components test methods -
Part 4-7: Electromagnetic compatibility (EMC) -Test method for
measuring of transfer impedance Z and screening attenuation
T
a or coupling attenuation a of connectors and assemblies -
S C
Triaxial tube in tube method
(IEC 62153-4-7:2021/AMD1:2025)
Méthodes d'essai des câbles métalliques et autres Prüfverfahren für metallene Kabel und andere passive
composants passifs - Partie 4-7: Compatibilité Bauteile - Teil 4-7: Elektromagnetische Verträglichkeit
électromagnétique (CEM) - Méthode d'essai pour mesurer (EMV) - Prüfverfahren zur Messung des
l'impédance de transfert, ZT, et l'affaiblissement Kopplungswiderstands ZT und der Schirmdämpfung aS
d'écrantage, aS,ou l'affaiblissement de couplage, aC, des oder Kopplungsdämpfung aC von Steckverbindern und
connecteurs et des cordons - Méthode triaxiale en tubes Baugruppen - Triaxiales Rohr-in-Rohr-Verfahren
concentriques (IEC 62153-4-7:2021/AMD1:2025)
(IEC 62153-4-7:2021/AMD1:2025)
This amendment A1 modifies the European Standard EN IEC 62153-4-7:2021; it was approved by CENELEC on 2025-12-11. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 amendment 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62153-4-7:2021/A1:2025 E

European foreword
The text of document 46/1061/FDIS, future edition 3 of IEC 62153-4-7/AMD1, prepared by TC 46
"Cables, wires, waveguides, RF connectors, RF and microwave passive components and
accessories" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-12-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-12-31
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62153-4-7:2021/AMD1:2025 was approved by CENELEC
as a European Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where 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.cencenelec.eu.
Replace IEC 62153-4-9:2018 with:
Publication Year Title EN/HD Year
IEC 62153-4-9 2018 Metallic communication cable test methods - -
- Part 4 - 9: Electromagnetic compatibility
(EMC) - Coupling attenuation of screened
balanced cables, triaxial method
+ A1 2020 - -
+ A2 2024 - -
Replace IEC 62153-4-15:2015 with:
Publication Year Title EN/HD Year
IEC 62153-4-15 2021 Metallic cables and other passive EN IEC 62153-4-15 2021
components test methods - Part 4-15:
Electromagnetic compatibility (EMC) - Test
method for measuring transfer impedance
and screening attenuation - or coupling
attenuation with triaxial cell
+ A1 2024 + A1 2024
IEC 62153-4-7 ®
Edition 3.0 2025-11
INTERNATIONAL
STANDARD
AMENDMENT 1
Metallic cables and other passive components test methods -
Part 4-7: Electromagnetic compatibility (EMC) -Test method for measuring of
transfer impedance ZT and screening attenuation aS or coupling attenuation aC of
connectors and assemblies - Triaxial tube in tube method
ICS 33.100.10; 33.120.10 ISBN 978-2-8327-0815-6

IEC 62153-4-7:2021-07/AMD1:2025-11(en)

IEC 62153-4-7:2021/AMD1:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Metallic cables and other passive components test methods -
Part 4-7: Electromagnetic compatibility (EMC) -
Test method for measuring of transfer impedance Z and screening
T
attenuation a or coupling attenuation a of connectors and assemblies -
S C
Triaxial tube in tube method
AMENDMENT 1
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,
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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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
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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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to IEC 62153-4-7:2021 has been prepared by IEC technical committee 46:
Cables, wires, waveguides, RF connectors, RF and microwave passive components and
accessories.
IEC 62153-4-7:2021/AMD1:2025 © IEC 2025
The text of this Amendment is based on the following documents:
Draft Report on voting
46/1061/FDIS 46/1070/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Amendment is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications/.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
___________
INTRODUCTION to Amendment
The goal of this amendment is:
– to extend coupling attenuation measurements to unscreened connectors and cable
assemblies
– to extend coupling attenuation measurements of connectors and cable assemblies to low
frequencies by introducing the LFCA
– to extend 10.5, expression of results by a conversion formula between scattering parameter
and coupling attenuation
– to introduce the application of a 20 dB/dec envelope curve for coupling attenuation
– to introduce the effect and the mitigation techniques of higher order modes when doing high
frequency measurements beyond the higher order mode cutoff-frequency of the triaxial outer
system
IEC 62153-4-7:2021/AMD1:2025 © IEC 2025
2 Normative references
Replace IEC 62153-4-9:2018 with the following:
IEC 62153-4-9:2018, Metallic communication cable test methods - Part 4 - 9: Electromagnetic
compatibility (EMC) - Coupling attenuation of screened balanced cables, triaxial method
IEC 62153-4-9:2018/AMD1:2020
IEC 62153-4-9:2018/AMD2:2024
Replace IEC 62153-4-15:2015 with the following:
IEC 62153-4-15:2021, Metallic cables and other passive components test methods - Part 4-15:
Electromagnetic compatibility (EMC) related test method for measuring transfer impedance and
screening attenuation or coupling attenuation with triaxial cell
IEC 62153-4-15:2021/AMD1:2024
10.5 Evaluation of test results when using a multiport VNA
Replace the note with the following:
NOTE The voltage ratio U /U corresponds not directly to the invers of the mixed mode S-parameters S
diff 2max sd21
and S , respectively according to the conventions shown in Annex F since square roots of power waves are used
ds21
for the determination.
The application of S or S instead of U /U for the evaluation of coupling attenuation according to Formula
sd21 ds21 diff 2max
(25) leads to wrong results. In Annex K Formula (25) is rearranged and expressed by a mixed mode scattering
parameter.
Annex E
E.2 Test set-up
Replace, in the second paragraph, “IEC 62153-4-15:2015, Annex F”, with
“IEC 62153-4-15:2021, Annex F”.
Add, after Annex H, the following new Annexes I, J, K, and L:
IEC 62153-4-7:2021/AMD1:2025 © IEC 2025
Annex I
(normative)
Coupling attenuation of unscreened single or multiple pairs
I.1 General
IEC 62153-4-9:2018/AMD1:2020, Annex D, describes the measurement of the coupling
attenuation of unscreened single or multiple balanced pairs within balanced cables with a test
set-up as depicted in Figure I.1.

Figure I.1 – Coupling attenuation of unscreened balanced pairs/cables
The triaxial test-set-up of screened coaxial or balanced cables under test (CUT) forms a short
circuit between the screen of the CUT and the outer tube at the near end. In case of unscreened
balanced cables, a short to the outer tube is not possible. Here the inner system is formed by
the CUT driven in differential mode and the outer system is formed by the tube and the common
mode of the CUT.
IEC 62153-4-9:2018/AMD1:2020, Annex D, describes the following measurements for
unscreened pairs:
– near-end coupling attenuation of a single
...