EN 61753-121-3:2010

SLOVENSKI STANDARD
01-september-2010
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Fibre optic interconnecting devices and passive components performance standards -
Part 121-3: Simplex and duplex cords with singlemode fibre and cylindrical ferrule
connectors for Category U - Uncontrolled environment (IEC 61753-121-3:2010)
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Betriebsverhalten - Teil
121-3: Simplex- und Duplexkabel mit zylindrischen Einmoden-Lichtwellenleiter-
Stiftsteckverbindern für die Kategorie U - Unkontrollierte Umgebung (IEC 61753-121-
3:2010)
Dispositifs d'interconnexion et composants passifs à fibres optiques - Norme de qualité
de fonctionnement - Partie 121-3: Cordons simplex et duplex avec fibres unimodales,
munis de connecteurs à férule cylindrique pour catégorie U - Environnement non
contrôlé (CEI 61753-121-3:2010)
Ta slovenski standard je istoveten z: EN 61753-121-3:2010
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61753-121-3
NORME EUROPÉENNE
July 2010
EUROPÄISCHE NORM
ICS 33.180.20
English version
Fibre optic interconnecting devices and passive components -
Performance standard -
Part 121-3: Simplex and duplex cords with single-mode fibre
and cylindrical ferrule connectors for category U -
Uncontrolled environment
(IEC 61753-121-3:2010)
Dispositifs d'interconnexion et composants Lichtwellenleiter -
passifs à fibres optiques - Verbindungselemente und passive
Norme de qualité de fonctionnement - Bauteile -
Partie 121-3: Cordons simplex et duplex Betriebsverhalten -
avec fibres unimodales, munis Teil 121-3: Simplex- und Duplexkabel
de connecteurs à férule cylindrique mit Einmoden-Lichtwellenleiter-
pour catégorie U - Steckverbindern mit zylindrischen
Environnement non contrôlé Ferrulen für die Kategorie U -
(CEI 61753-121-3:2010) Unkontrollierte Umgebung
(IEC 61753-121-3:2010)
This European Standard was approved by CENELEC on 2010-07-01. 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 61753-121-3:2010 E

Foreword
The text of document 86B/2989/FDIS, future edition 1 of IEC 61753-121-3, prepared by SC 86B, Fibre
optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 61753-121-3 on 2010-07-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2011-04-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2013-07-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61753-121-3:2010 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 60794-2 NOTE  Harmonized as EN 60794-2.
IEC 61300-3-28 NOTE  Harmonized as EN 61300-3-28.
IEC 61756-1 NOTE  Harmonized as EN 61756-1.
__________
- 3 - EN 61753-121-3:2010
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 60793-2-50 - Optical fibres - EN 60793-2-50 -
Part 2-50: Product specifications - Sectional
specification for class B single-mode fibres

IEC 60794-1-2 - Optical fibre cables - EN 60794-1-2 -
Part 1-2: Generic specification - Basic optical
cable test procedures
IEC 60794-2-50 - Optical fibre cables - EN 60794-2-50 -
Part 2-50: Indoor cables - Family specification
for simplex and duplex cables for use in
terminated cable assemblies
IEC 61300 Series Fibre optic interconnecting devices and EN 61300 Series
passive components - Basic test and
measurement procedures
IEC 61300-1 - Fibre optic interconnecting devices and EN 61300-1 -
passive components - Basic test and
measurement procedures -
Part 1: General and guidance
IEC 61300-2-4 - Fibre optic interconnecting devices and EN 61300-2-4 -
passive components - Basic test and
measurement procedures -
Part 2-4: Tests - Fibre/cable retention

IEC 61300-2-5 - Fibre optic interconnecting devices and EN 61300-2-5 -
passive components - Basic test and
measurement procedures -
Part 2-5: Tests - Torsion
IEC 61300-2-22 - Fibre optic interconnecting devices and EN 61300-2-22 -
passive components - Basic test and
measurement procedures -
Part 2-22: Tests - Change of temperature

IEC 61300-2-42 - Fibre optic interconnecting devices and EN 61300-2-42 -
passive components - Basic test and
measurement procedures -
Part 2-42: Tests - Static side load for
connectors
Publication Year Title EN/HD Year

IEC 61300-2-44 - Fibre optic interconnecting devices and EN 61300-2-44 -
passive components - Basic test and
measurement procedures -
Part 2-44: Tests - Flexing of the strain relief of
fibre optic devices
IEC 61300-3-1 - Fibre optic interconnecting devices and EN 61300-3-1 -
passive components - Basic test and
measurement procedures -
Part 3-1: Examinations and measurements -
Visual examination
IEC 61300-3-3 - Fibre optic interconnecting devices and EN 61300-3-3 -
passive components - Basic test and
measurement procedures -
Part 3-3: Examinations and measurements -
Active monitoring of changes in attenuation
and return loss
IEC 61300-3-6 - Fibre optic interconnecting devices and EN 61300-3-6 -
passive components - Basic test and
measurement procedures -
Part 3-6: Examinations and measurements -
Return loss
IEC 61300-3-15 - Fibre optic interconnecting devices and EN 61300-3-15 -
passive components - Basic test and
measurement procedures -
Part 3-15: Examinations and measurements -
Dome eccentricity of a convex polished ferrule
endface
IEC 61300-3-16 - Fibre optic interconnecting devices and EN 61300-3-16 -
passive components - Basic test and
measurement procedures -
Part 3-16: Examinations and measurements -
Endface radius of spherically polished ferrules

IEC 61300-3-17 - Fibre optic interconnecting devices and EN 61300-3-17 -
passive components - Basic test and
measurement procedures -
Part 3-17: Examinations and measurements -
Endface angle of angle-polished ferrules

IEC 61300-3-22 - Fibre optic interconnecting devices and EN 61300-3-22 -
passive components - Basic test and
measurement procedures -
Part 3-22: Examinations and measurements -
Ferrule compression force
IEC 61300-3-23 - Fibre optic interconnecting devices and EN 61300-3-23 -
passive components - Basic test and
measurement procedures -
Part 3-23: Examination and measurements -
Fibre position relative to ferrule endface

IEC 61300-3-34 - Fibre optic interconnecting devices and EN 61300-3-34 -
passive components - Basic test and
measurement procedures -
Part 3-34: Examinations and measurements -
Attenuation of random mated connectors

- 5 - EN 61753-121-3:2010
Publication Year Title EN/HD Year

IEC 61300-3-35 - Fibre optic interconnecting devices and EN 61300-3-35 -
passive components - Basic test and
measurement procedures -
Part 3-35: Examinations and measurements -
Fibre optic cylindrical connector endface
visual and automated inspection

IEC 61753 Series Fibre optic interconnecting devices and EN 61753 Series
passive components performance standard

IEC 61753-1 - Fibre optic interconnecting devices and EN 61753-1 -
passive components performance standard -
Part 1: General and guidance for performance
standards
IEC 61754 Series Fibre optic connector interfaces EN 61754 Series

IEC 61755 Series Fibre optic connector optical interfaces EN 61755 Series

IEC 61755-2-1 - Fibre optic connector optical interfaces - EN 61755-2-1 -
Part 2-1: Optical interface standard single
mode non-angled physically contacting fibres

IEC 61755-2-2 - Fibre optic connector optical interfaces - EN 61755-2-2 -
Part 2-2: Optical interface standard single
mode 8 degrees angled physically contacting
fibres
IEC/TR 61931 - Fibre optic - Terminology - -

IEC 61753-121-3 ®
Edition 1.0 2010-04
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Performance
standard –
Part 121-3: Simplex and duplex cords with single-mode fibre and cylindrical
ferrule connectors for category U – Uncontrolled environment

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
S
ICS 33.180.20 ISBN 978-2-88910-563-2
– 2 – 61753-121-3 © IEC:2010(E)
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Terms and definitions .8
4 Description .8
4.1 General .8
4.2 Optical fibres.9
4.3 Cable design and construction.9
4.4 Optical connectors .9
4.4.1 Mechanical connectivity.9
4.4.2 Optical performance requirements .9
4.4.3 Connector set performance requirements .9
4.5 Cable bend radius .9
4.6 Identification.9
5 Tests .9
5.1 General .9
5.2 Measuring wavelengths .9
5.3 Test specimen.10
6 Test procedure .10
6.1 General .10
6.2 Visual examination .10
6.3 Fibre optic connector end face .10
6.4 Optical performance requirements.11
6.5 Climatic performance requirements .13
6.6 Mechanical performance requirements .14
7 Test report.16
Annex A (normative) Sample size and product sourcing requirements .17
Annex B (normative) Visual examination of outer cable sheath movement .18
Annex C (normative) Change of temperature .19
Annex D (normative) Static side load .20
Annex E (normative) Flexing strain relief of fibre optic devices .21
Bibliography.22

Figure B.1 – Initial marking of the cable sheath.18
Figure B.2 – Final visual examination .18
Figure C.1 – Change of temperature test configuration .19
Figure D.1 – Test apparatus for transmission with applied side load .20
Figure E.1 – Flexing test apparatus .21

Table 1 – Wavelengths for attenuation and return loss measurements .9
Table 2 – Visual examination requirements.10
Table 3 – End face requirements .11
Table 4 – Optical performance requirements.12
Table 5 – Climatic performance requirements .13

61753-121-3 © IEC:2010(E) – 3 –
Table 6 – Mechanical performance requirements .14
Table A.1 – Sample size requirements.17

– 4 – 61753-121-3 © IEC:2010(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 121-3: Simplex and duplex cords with single-mode fibre
and cylindrical ferrule connectors for category U –
Uncontrolled environment
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 61753-121-3 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
FDIS Report on voting
86B/2989/FDIS 86B/3025/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.

61753-121-3 © IEC:2010(E) – 5 –
A list of all parts of IEC 61753 series, published under the general title Fibre optic
interconnecting devices and passive components – Performance standard, can be found on the
IEC website.
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.
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.
– 6 – 61753-121-3 © IEC:2010(E)
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
PERFORMANCE STANDARD –
Part 121-3: Simplex and duplex cords with single-mode fibre
and cylindrical ferrule connectors for category U –
Uncontrolled environment
1 Scope
This part of IEC 61753 specifies the test requirements for finished cable assemblies for use
as patchcords, work area cords and equipment cords for applications in a uncontrolled (U)
environment according to IEC 61753-1, where the connectors already comply with the
Category U requirements of IEC 61753-1. The assemblies consist of simplex or duplex fibre
optic cable terminated at each end of the cable with non-angled (PC) or angled (APC)
polished single-mode fibre optic connectors with cylindrical ferrules. The wavelength of
operation is between 1 260 nm and 1 625 nm.
The relevant requirements for mechanical and optical connectivity systems are covered by
mechanical and optical interface standards IEC 61754 series and IEC 61755 series
respectively. The relevant requirements for connector sets are covered by IEC 61753 series.
The relevant requirements for cable are covered by IEC 60794-2-50.
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 amen
...