SIST EN 61935-2:2010

Specification for the testing of balanced and coaxial information technology cabling - Part 2: Cords as specified in ISO/IEC 11801 and related standards (IEC 1935-2:2010)

This International Standard provides methods to ensure compatibility of balanced cords to be used in cabling according to ISO/IEC 11801 and provides test methods and associated requirements to demonstrate the performance and reliability of these balanced cords during their operation lifetime. This International Standard may also be used for providing test methods for assessing the behaviour of other balanced cords.

Spezifikation für die Prüfung der symmetrischen und koaxialen informationstechnischen Verkabelung – Teil 2: Schnüre nach ISO/IEC 11801 und entsprechenden Normen (IEC 1935-2:2010)

Spécification relative aux essais des câblages symétriques et coaxiaux des technologies de l'information - Partie 2: Cordons tels que spécifiés dans l'ISO/CEI 11801 et normes associées (CEI 1935-2:2010)

La CEI 61935-2:2010 fournit des méthodes en vue de s'assurer de la compatibilité des cordons à paires symétriques à utiliser dans les câblages selon l'ISO/IEC 11801, ainsi que des méthodes d'essai et leurs exigences associées pour démontrer les performances et la fiabilité de ces cordons à paires symétriques au cours de leur durée de vie opérationnelle. La présente Norme internationale peut également être utilisée en vue de fournir des méthodes d'essai pour l'évaluation du comportement d'autres cordons à paires symétriques. Cette troisième édition annule et remplace la deuxième édition publiée en 2005. Elle diffère de la deuxième édition en ce qu'elle couvre les cordons de catégorie 6A à catégorie 7A, comme défini dans l'ISO/IECEI 11801.

Specifikacija za preskušanje simetričnega in koaksialnega okablenja v informacijski tehnologiji - 2. del: Vrvice po specifikaciji iz ISO/IEC 11801 in sorodnih standardov (IEC 1935-2:2010)

Ta mednarodni standard predpisuje metode, ki zagotavljajo združljivost simetričnih vrvic, ki se uporabljajo v okablenju v skladu z ISO/IEC 11801 ter predpisuje preskusne metode in pridružene zahteve za prikaz zmogljivosti in zanesljivosti teh simetričnih vrvic v njihovi operativni življenjski dobi. Ta mednarodni standard se lahko uporablja tudi za predpisovanje preskusnih metod za ocenjevanje vedenja drugih simetričnih vrvic.

General Information

• Status: Published
• Publication Date: 06-Oct-2010
• ICS: 33.120.10 - Coaxial cables. Waveguides
• Technical Committee: iTEL - Communication cables
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 08-Sep-2010
• Due Date: 13-Nov-2010
• Completion Date: 07-Oct-2010
• Ref Project: EN 61935-2:2010 - Specification for the testing of balanced and coaxial information technology cabling - Part 2: Cords as specified in ISO/IEC 11801 and related standards

Relations

• Replaces: SIST EN 61935-2:2006 - Testing of balanced communication cabling in accordance with standards series EN 50173 -- Part 2: Patch cords and work area cords
• Effective Date: 29-Jan-2023
• Revised: SIST EN 61935-2:2006 - Testing of balanced communication cabling in accordance with standards series EN 50173 -- Part 2: Patch cords and work area cords
• Effective Date: 03-Sep-2013
• Replaces: SIST EN 61935-2:2006 - Testing of balanced communication cabling in accordance with standards series EN 50173 -- Part 2: Patch cords and work area cords
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61935-2:2010
01-november-2010
1DGRPHãþD
SIST EN 61935-2:2006
6SHFLILNDFLMD]DSUHVNXãDQMHVLPHWULþQHJDLQNRDNVLDOQHJDRNDEOHQMDY
LQIRUPDFLMVNLWHKQRORJLMLGHO9UYLFHSRVSHFLILNDFLMLL],62,(&LQ
VRURGQLKVWDQGDUGRY,(&
Specification for the testing of balanced and coaxial information technology cabling - Part
2: Cords as specified in ISO/IEC 11801 and related standards (IEC 1935-2:2010)
Spezifikation für die Prüfung der symmetrischen und koaxialen informationstechnischen
Verkabelung – Teil 2: Schnüre nach ISO/IEC 11801 und entsprechenden Normen (IEC
1935-2:2010)
Spécification relative aux essais des câblages symétriques et coaxiaux des technologies
de l'information - Partie 2: Cordons tels que spécifiés dans l'ISO/CEI 11801 et normes
associées (CEI 1935-2:2010)
Ta slovenski standard je istoveten z: EN 61935-2:2010
ICS:
33.120.10 Koaksialni kabli. Valovodi Coaxial cables. Waveguides
SIST EN 61935-2:2010 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61935-2:2010

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SIST EN 61935-2:2010

EUROPEAN STANDARD
EN 61935-2

NORME EUROPÉENNE
September 2010
EUROPÄISCHE NORM

ICS 33.040.20; 33.120.20 Supersedes EN 61935-2:2005


English version


Specification for the testing of balanced and coaxial information
technology cabling -
Part 2: Cords as specified in ISO/IEC 11801 and related standards
(IEC 61935-2:2010)


Spécification relative aux essais  Spezifikation für die Prüfung
des câblages symétriques et coaxiaux der symmetrischen und koaxialen
des technologies de l'information - informationstechnischen Verkabelung –
Partie 2: Cordons tels que spécifiés Teil 2: Schnüre nach ISO/IEC 11801
dans l'ISO/CEI 11801 et normes und entsprechenden Normen
associées (IEC 61935-2:2010)
(CEI 61935-2:2010)




This European Standard was approved by CENELEC on 2010-09-01. 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 61935-2:2010 E

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SIST EN 61935-2:2010
EN 61935-2:2010 - 2 -
Foreword
The text of document 46/351/FDIS, future edition 3 of IEC 61935-2, prepared by IEC TC 46, Cables,
wires, waveguides, R.F. connectors, R.F. and microwave passive components and accessories, was
submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61935-2 on
2010-09-01.
This European Standard supersedes EN 61935-2:2005.
This EN 61935-2:2010 differs from EN 61935-2:2005 in that it covers category 6 to category 7 cords as
A A
defined in ISO/IEC 11801.
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.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2011-06-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2013-09-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61935-2:2010 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:
IEC 60068-2-68 NOTE  Harmonized as EN 60068-2-68.
1) 1)
IEC 60512-27-100 NOTE  Harmonized as EN 60512-27-100 .
__________

1)
At draft stage.

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SIST EN 61935-2:2010
- 3 - EN 61935-2:2010
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

IEC 60068-2-61 - Environmental testing - EN 60068-2-61 -
Part 2: Test methods - Test Z/ABDM: Climatic
sequence


IEC 60603-7 Series Connectors for electronic equipment - Part 7: EN 60603-7 Series
Detail specifications


IEC 60603-7 2008 Connectors for electronic equipment - EN 60603-7 2009
Part 7: Detail specification for 8-way,
unshielded, free and fixed connectors


IEC 60603-7-51 - Connectors for electronic equipment - EN 60603-7-51 -
Part 7-51: Detail specification for 8-way,
shielded, free and fixed connectors, for data
transmissions with frequencies up to 500 MHz


IEC 61076-3-104 - Connectors for electronic equipment - EN 61076-3-104 -
Product requirements -
Part 3-104: Detail specification for 8-way,
shielded free and fixed connectors for data
transmissions with frequencies up to
1 000 MHz


IEC 61076-3-110 - Connectors for electronic equipment - EN 61076-3-110 -
Product requirements -
Part 3-110: Rectangular connectors - Detail
specification for shielded, free and fixed
connectors for data transmission with
frequencies up to 1 000 MHz


IEC 61156 Series Multicore and symmetrical pair/quad cables - -
for digital communications


IEC 61156-1 - Multicore and symmetrical pair/quad cables - -
for digital communications -
Part 1: Generic specification


IEC 61156-6 - Multicore and symmetrical pair/quad cables - -
for digital communications -
Part 6: Symmetrical pair/quad cables with
transmission characteristics up to 1 000 MHz -
Work area wiring - Sectional specification


IEC 61935-1 (mod) 2009 Specification for the testing of balanced and EN 61935-1 2009
coaxial information technology cabling -
Part 1: Installed balanced cabling as specified
in ISO/IEC 11801 and related standards

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SIST EN 61935-2:2010
EN 61935-2:2010 - 4 -
Publication Year Title EN/HD Year

IEC 62153-4-11 - Metallic communication cable test methods - - -
Part 4-11: Electromagnetic compatibility
(EMC) - Coupling attenuation or screening
attenuation of patch cords, coaxial cable
assemblies, pre-connectorized cables -
Absorbing clamp method


ISO/IEC 11801 - Information technology - Generic cabling for - -
customer premises

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SIST EN 61935-2:2010

IEC 61935-2
®
Edition 3.0 2010-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside


Specification for the testing of balanced and coaxial information technology
cabling –
Part 2: Cords as specified in ISO/IEC 11801 and related standards

Spécification relative aux essais des câblages symétriques et coaxiaux des
technologies de l’information –
Partie 2: Cordons tels que spécifiés dans l’ISO/CEI 11801
et normes associées

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 33.040.20; 33.120.20 ISBN 978-2-88912-001-7
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 61935-2:2010
– 2 – 61935-2 © IEC:2010
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.7
2 Normative references .7
3 Terms and definitions .8
4 General requirements and test configuration .8
4.1 Cable and connector design .8
4.2 Balanced cord, cable and connector tests .8
4.3 Test configuration and equipment.8
4.4 Balanced cord tests requirements .9
5 Acceptance tests .10
5.1 Visual inspection .10
5.2 Wire map.11
5.3 Propagation delay .12
5.4 Delay skew.12
5.5 Insertion loss.12
5.6 Return loss.12
5.7 Near end crosstalk (NEXT).13
5.8 Assumptions used in the development of cord requirements.16
6 Balanced cord test procedure – Network analyser test configuration .16
7 Periodic tests .17
7.1 General .17
7.2 Tensile strength .17
7.3 Flexure.18
7.4 Bending.19
7.5 Twisting.19
7.6 Crushing .20
7.7 Dust test.21
7.8 Coupling attenuation .23
7.9 Climatic sequence .24
8 Test head requirements.24
8.1 General .24
8.2 Minimum requirements for all test head designs .24
8.3 Additional FEXT requirements for balanced connector compatible test heads.25
8.4 Additional return loss requirements for balanced connector compatible test
heads .25
8.5 NEXT loss centering requirements for balanced connector compatible test
heads .25
Bibliography.27

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SIST EN 61935-2:2010
61935-2 © IEC:2010 – 3 –
Figure 1 – Test configuration for balanced cord for NEXT and return loss
measurements .9
Figure 2 – Correct pairing .11
Figure 3 – Incorrect pairing .11
Figure 4 – Initial marking of the cable sheath.17
Figure 5 – Final visual inspection.17
Figure 6 – Fixture for balanced cord flexure test .18
Figure 7 – Bending test: assembly in U shape .19
Figure 8 – Twisting test: assembly in U shape .20
Figure 9 – Fixture for cable crushing test .21
Figure 10 – Measuring device .23
Figure 11 – Centering of NEXT properties of the balanced connector test head .26

Table 1 – Return loss requirements .13
Table 2 – Balanced cord return loss requirements at key frequencies .13
Table 3 – Category 5 balanced cord NEXT requirements at key frequencies.15
Table 4 – Category 6 balanced cord NEXT requirements at key frequencies.15
Table 5 – Category 6 balanced cord NEXT requirements at key frequencies .15
A
Table 6 – Category 7 balanced cord NEXT requirements at key frequencies.15
Table 7 – Category 7 balanced cord NEXT requirements at key frequencies .15
A
Table 8 – Assumptions for cabling components used in the development of NEXT and
return loss requirements .16
Table 9 – Coupling attenuation limits .23

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SIST EN 61935-2:2010
– 4 – 61935-2 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

SPECIFICATION FOR THE TESTING OF BALANCED AND
COAXIAL INFORMATION TECHNOLOGY CABLING –

Part 2: Cords as specified in ISO/IEC 11801 and related standards


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 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.
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 IEC 61935-2 has been prepared by IEC technical committee 46:
Cables, wires, waveguides, R.F. connectors, R.F. and microwave passive components and
accessories.
This third edition cancels and replaces the second edition published in 2005.
This third edition of IEC 61935-2 differs from the second edition in that it covers category 6
A
to category 7 cords as defined in ISO/IEC 11801.
A

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SIST EN 61935-2:2010
61935-2 © IEC:2010 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
46/351/FDIS 46/364/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.
The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61935 series, under the general title: Specification for the testing
of balanced and coaxial information technology cabling, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability 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.
A bilingual version of this publication may be issued at a later date.

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.

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SIST EN 61935-2:2010
– 6 – 61935-2 © IEC:2010
INTRODUCTION
Balanced cords are constructed for connecting equipment using free connectors according to
IEC 60603-7 series, IEC 61076-3-104 and IEC 61076-3-110. It is known that connecting
hardware performance is subject to influence by the properties of the free connector
termination and therefore balanced cords should be tested to determine the quality of the
assembly. Moreover, the performance of balanced cords may differ due to the performances
of the involved separate components depending upon the efficiency of the manufacturing
procedure. Manufacturing procedures also impact upon the reliability of these balanced cords.
Therefore, the primary object of this standard is to provide test methods to ensure
compatibility of balanced cords to be used in cabling according to ISO/IEC 11801. Another
object is to provide test methods and associated requirements to demonstrate the
performance and reliability of these balanced cords during their operational lifetime.
The test methods described in this standard may also be used for any balanced cords that
include twisted pairs terminated at each end.

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SIST EN 61935-2:2010
61935-2 © IEC:2010 – 7 –
SPECIFICATION FOR THE TESTING OF BALANCED AND
COAXIAL INFORMATION TECHNOLOGY CABLING –

Part 2: Cords as specified in ISO/IEC 11801 and related standards



1 Scope
This International Standard provides methods to ensure compatibility of balanced cords to be
used in cabling according to ISO/IEC 11801 and provides test methods and associated
requirements to demonstrate the performance and reliability of these balanced cords during
their operational lifetime. This International Standard may also be used for providing test
methods for assessing the behaviour of other balanced cords.
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 60068-2-61, Environmental testing – Part 2: Test methods – Test Z/AMB: Climatic
sequence
IEC 60603-7 (all parts), Connectors for electronic equipment – Part 7: Detail specifications
IEC 60603-7:2008, Connectors for electronic equipment – Part 7: Detail specification for 8-
way, unshielded, free and fixed connectors
IEC 60603-7-51, Connectors for electronic equipment – Part 7-51: Detail specification for 8-
way, shielded, free and fixed connectors, for data transmission with frequencies up to 500
MHz
IEC 61076-3-104, Connectors for electronic equipment – Product requirements – Part 3-104:
Detail specification for 8-way, shielded free and fixed connectors for data transmissions with
frequencies up to 1000 MHz
IEC 61076-3-110, Connectors for electronic equipment – Product requirements – Part 3-110:
Rectangular connectors – Detail specification for shielded, free and fixed connectors for data
transmission with frequencies up to 1000 MHz
IEC 61156 (all parts), Multicore and symmetrical pair/quad cables for digital communications
IEC 61156-1, Multicore and symmetrical pair/quad cables for digital communications – Part 1:
Generic specification
IEC 61156-6, Multicore and symmetrical pair/quad cables for digital communications – Part 6:
Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz – Work area
wiring – Sectional specification
IEC 61935-1:2009, Specification for the testing of balanced and coaxial information
technology cabling – Part 1: Installed balanced cabling as specified in ISO/IEC 11801 and
related standards

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SIST EN 61935-2:2010
– 8 – 61935-2 © IEC:2010
IEC 612153-4-11, Metallic communication cable test methods – Part 4-11: Electromagnetic
compatibility (EMC) – Coupling attenuation or screening attenuation of patch cords, coaxial
cable assemblies, pre-connectorized cables – Absorbing clamp method
ISO/IEC 11801, Information technology – Generic cabling for customer premises
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61935-1 and the
following apply.
3.1
cord
a cable assembly as defined in IEC 61935-1 whatever its targeted use
NOTE In this document, the usage of balanced cord covers, amongst others, work area cord, patch cord and
equipment cord. The terminology “modular plug cord” is an alternative expression.
4 General requirements and test configuration
4.1 Cable and connector design
When compliance with ISO/IEC 11801 is required, the design of the cables and connectors
should conform to the applicable parts of IEC 61156 and IEC 60603-7, IEC 61076-3-110 and
IEC 61076-3-104 respectively.
4.2 Balanced cord, cable and connector tests
For balanced cords complying with ISO/IEC 11801, cables and connectors used in cable
assemblies should be assessed separately in accordance with IEC 61156-1 and IEC 60603-7,
IEC 61076-3-104 or IEC 61076-3-110 respectively. These component tests do not need to be
repeated on the balanced cord, but the terminated contact height should be assessed (e.g.
dimension K2 of Table 1 of IEC 60603-7).
For other cords, the cables and connectors shall be assessed separately according to their
respective standard unless there are no component standards. In this case, all tests will be
performed on the cords, including interface tests. The acceptance tests described in this
document shall be performed on a balanced cord on a lot-by-lot basis.
The periodic tests described in this document are type tests that have to be performed
according to the quality system of the manufacturer.
4.3 Test configuration and equipment
The reference measurement procedures that are described in this standard require the use of
a network analyser, coaxial interface cables, r.f. transformers (baluns), twisted pair test leads
and impedance matching terminations. Refer to IEC 61935-1 for requirements of test
equipment, including baluns (see 4.2.6 of IEC 61935-1). The nominal impedance for the test
set-up and the terminations is 100 Ω. The same tests may be used for 120 Ω and 150 Ω
cords, but the measurement methods have not been evaluated for these nominal impedance
values.

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SIST EN 61935-2:2010
61935-2 © IEC:2010 – 9 –
The test configuration includes termination test heads at each end of the cord. For NEXT and
return loss, the test configuration is as shown in Figure 1. The terminals on the test heads
interface with the test equipment. Refer to IEC 61935-1 for detailed connection diagrams. All
pairs shall be terminated with differential plus common mode terminations per IEC 61935-1.
Resistive type terminations are preferred.

2
1
3
4 5

6
7

IEC  1351/10

Key
1 test interface 5 cord under test
2 network analyser (receiver, in –50 Ω) 6 ground plane
3 near end test head 7 far end test head
4 balun
Figure 1 – Test configuration for balanced cord for NEXT and return loss measurements
4.4 Balanced cord tests requirements
The test methods described in this specification characterise balanced cords according to
ISO/IEC 11801. They may be also used for other cords. For certification purposes, the test
schedule refers to these tests.
The cord test requirements include tests that can be performed on each cord or
representative samples produced, and tests that are only performed on representative
samples of cords. The sampling only tests (known as periodic tests) include:
• tensile strength;
• flexure;
• bending/twisting;
• crushing;
• dust test;

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SIST EN 61935-2:2010
– 10 – 61935-2 © IEC:2010
• climatic sequence;
• coupling attenuation.
The periodic tests are described in detail in Clause 7.
The acceptance tests that can be performed on each cord include:
• visual inspection;
• wire map;
• return loss;
• pair-to-pair NEXT.
If all components used to assemble the cord are not assured to be compliant to their
respective
...