SIST EN IEC 60793-2-40:2021

SLOVENSKI STANDARD
SIST EN IEC 60793-2-40:2021
01-junij-2021
Nadomešča:
SIST EN 60793-2-40:2016
Optična vlakna - 2-40. del: Specifikacije izdelka - Področna specifikacija za
mnogorodovna vlakna kategorije A4 (IEC 60793-2-40:2021)
Optical fibres - Part 2-40: Product specifications - Sectional specification for category A4
multimode fibres (IEC 60793-2-40:2021)
Lichtwellenleiter - Teil 2-40: Produktspezifikationen - Rahmenspezifikation für
Mehrmodenfasern der Kategorie A4 (IEC 60793-2-40:2021)
Fibres optiques - Partie 2-40: Spécifications de produits - Spécification intermédiaire
pour les fibres multimodales de la catégorie A4 (IEC 60793-2-40:2021)
Ta slovenski standard je istoveten z: EN IEC 60793-2-40:2021
ICS:
33.180.10 (Optična) vlakna in kabli Fibres and cables
SIST EN IEC 60793-2-40:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60793-2-40:2021

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SIST EN IEC 60793-2-40:2021


EUROPEAN STANDARD EN IEC 60793-2-40

NORME EUROPÉENNE

EUROPÄISCHE NORM
April 2021
ICS 33.180.10 Supersedes EN 60793-2-40:2016 and all of its
amendments and corrigenda (if any)
English Version
Optical fibres - Part 2-40: Product specifications - Sectional
specification for category A4 multimode fibres
(IEC 60793-2-40:2021)
Fibres optiques - Partie 2-40: Spécifications de produits - Lichtwellenleiter - Teil 2-40: Produktspezifikationen -
Spécification intermédiaire pour les fibres multimodales de Rahmenspezifikation für Mehrmodenfasern der Kategorie
catégorie A4 A4
(IEC 60793-2-40:2021) (IEC 60793-2-40:2021)
This European Standard was approved by CENELEC on 2021-04-01. 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 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, 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,
Turkey 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 60793-2-40:2021 E

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SIST EN IEC 60793-2-40:2021
EN IEC 60793-2-40:2021 (E)
European foreword
The text of document 86A/1943/CDV, future edition 5 of IEC 60793-2-40, prepared by SC 86A "Fibres
and cables" of IEC/TC 86 "Fibre optics" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 60793-2-40:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-01-01
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-04-01
document have to be withdrawn
This document supersedes EN 60793-2-40:2016 and all of its amendments and corrigenda (if any).
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.
Endorsement notice
The text of the International Standard IEC 60793-2-40:2021 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 60793-1-1 NOTE Harmonized as EN 60793-1-1
IEC 60793-2 NOTE Harmonized as EN IEC 60793-2
2

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SIST EN IEC 60793-2-40:2021
EN IEC 60793-2-40:2021 (E)
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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-1 - Environmental testing - Part 1: General EN 60068-1 -
and guidance
IEC 60793-1-20 - Optical fibres - Part 1-20: Measurement EN 60793-1-20 -
methods and test procedures - Fibre
geometry
IEC 60793-1-22 - Optical fibres - Part 1-22: Measurement EN 60793-1-22 -
methods and test procedures - Length
measurement
IEC 60793-1-40 2019 Optical fibres - Part 1-40: Attenuation EN IEC 60793-1-40 2019
measurement methods
IEC 60793-1-41 - Optical fibres - Part 1-41: Measurement EN 60793-1-41 -
methods and test procedures - Bandwidth
IEC 60793-1-42 - Optical fibres - Part 1-42: Measurement EN 60793-1-42 -
methods and test procedures - Chromatic
dispersion
IEC 60793-1-43 - Optical fibres - Part 1-43: Measurement EN 60793-1-43 -
methods and test procedures - Numerical
aperture measurement
IEC 60793-1-46 - Optical fibres - Part 1-46: Measurement EN 60793-1-46 -
methods and test procedures - Monitoring
of changes in optical transmittance
IEC 60793-1-47 - Optical fibres – Part 1-47: Measurement EN IEC 60793-1-47 -
methods and test procedures –
Macrobending loss
IEC 60793-1-50 - Optical fibres - Part 1-50: Measurement EN 60793-1-50 -
methods and test procedures - Damp heat
(steady state) tests
IEC 60793-1-51 - Optical fibres - Part 1-51: Measurement EN 60793-1-51 -
methods and test procedures - Dry heat
(steady state) tests
3

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SIST EN IEC 60793-2-40:2021
EN IEC 60793-2-40:2021 (E)
Publication Year Title EN/HD Year
IEC 60793-1-52 - Optical fibres - Part 1-52: Measurement EN 60793-1-52 -
methods and test procedures - Change of
temperature tests

4

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SIST EN IEC 60793-2-40:2021



IEC 60793-2-40

®


Edition 5.0 2021-02




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE











Optical fibres –

Part 2-40: Product specifications – Sectional specification for category A4

multimode fibres



Fibres optiques –

Partie 2-40: Spécifications de produits – Spécification intermédiaire pour les


fibres multimodales de catégorie A4













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 33.180.10 ISBN 978-2-8322-9437-6




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN IEC 60793-2-40:2021
– 2 – IEC 60793-2-40:2021 © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
4 Specifications . 9
4.1 Dimensional requirements . 9
4.2 Mechanical requirements . 10
4.2.1 General . 10
4.2.2 Tensile load test . 10
4.3 Transmission requirements . 11
4.4 Environmental requirements . 12
4.4.1 General . 12
4.4.2 Mechanical environmental requirements . 13
4.4.3 Transmission environmental requirements . 13
Annex A (normative) Family specifications for subcategory A4a multimode fibres . 15
A.1 General . 15
A.2 Dimensional requirements . 15
A.3 Mechanical requirements . 15
A.4 Transmission requirements . 15
A.5 Environmental requirements . 16
Annex B (normative) Family specifications for subcategory A4b multimode fibres . 17
B.1 General . 17
B.2 Dimensional requirements . 17
B.3 Mechanical requirements . 17
B.4 Transmission requirements . 17
B.5 Environmental requirements . 18
Annex C (normative) Family specifications for subcategory A4c multimode fibres . 19
C.1 General . 19
C.2 Dimensional requirements . 19
C.3 Mechanical requirements . 19
C.4 Transmission requirements . 19
C.5 Environmental requirements . 20
Annex D (normative) Family specifications for subcategory A4d multimode fibres . 21
D.1 General . 21
D.2 Dimensional requirements . 21
D.3 Mechanical requirements . 21
D.4 Transmission requirements . 21
D.5 Environmental requirements . 22
Annex E (normative) Family specifications for subcategory A4e multimode fibres . 23
E.1 General . 23
E.2 Dimensional requirements . 23
E.3 Mechanical requirements . 23
E.4 Transmission requirements . 23
E.5 Environmental requirements . 24
Annex F (normative) Family specifications for subcategory A4f multimode fibres . 25

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SIST EN IEC 60793-2-40:2021
IEC 60793-2-40:2021 © IEC 2021 – 3 –
Annex G (normative) Family specifications for subcategory A4g multimode fibres . 26
G.1 General . 26
G.2 Dimensional requirements . 26
G.3 Mechanical requirements . 26
G.4 Transmission requirements . 26
G.5 Environmental requirements . 27
Annex H (normative) Family specifications for subcategory A4h multimode fibres . 28
H.1 General . 28
H.2 Dimensional requirements . 28
H.3 Mechanical requirements . 28
H.4 Transmission requirements . 28
H.5 Environmental requirements . 29
Annex I (normative) Family specifications for subcategory A4i multimode fibres . 30
I.1 General . 30
I.2 Dimensional requirements . 30
I.3 Mechanical requirements . 30
I.4 Transmission requirements . 30
I.5 Environmental requirements . 31
Annex J (normative) Mode scramblers for subcategory A4a to A4c fibres . 32
J.1 General . 32
J.2 Specification for mode scramblers . 32
Annex K (informative) Additional transmission requirements for subcategory A4a
multimode fibres for wavelengths below 650 nm . 33
K.1 General . 33
K.2 Transmission requirements . 33
Bibliography . 34

Figure 1 – Tensile load versus elongation for a plastic optical fibre . 11
Figure J.1 – Mode scrambler for category A4 fibre . 32

Table 1 – Characteristics and applications of category A4 fibres . 7
Table 2 – Dimensional attributes and measurement methods . 9
Table 3 – Requirements common to all category A4 fibres . 9
Table 4 – Additional attributes required in A4g through A4i family specifications . 9
Table 5 – Mechanical attributes and test methods . 10
Table 6 – Requirements common to category A4 fibres . 10
Table 7 – Additional attributes required in family specification for sub-category A4g
through A4i fibres . 10
Table 8 – Transmission attributes and measurement methods . 12
Table 9 – Attributes required in family specifications . 12
Table 10 – Environmental exposure tests . 13
Table 11 – Attributes measured . 13
Table 12 – Requirement for tensile strength . 13
Table 13 – Requirement for change in attenuation for A4a through A4e fibre . 14
Table 14 – Requirement for change in attenuation for A4g through A4i fibre . 14
Table A.1 – Dimensional requirements specific to A4a fibres . 15

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SIST EN IEC 60793-2-40:2021
– 4 – IEC 60793-2-40:2021 © IEC 2021
Table A.2 – Mechanical requirements specific to A4a fibres . 15
Table A.3 – Transmission requirements specific to A4a fibres . 16
Table B.1 – Dimensional requirements specific to A4b fibres . 17
Table B.2 – Mechanical requirements specific to A4b fibres . 17
Table B.3 – Transmission requirements specific to A4b fibres . 18
Table C.1 – Dimensional requirements specific to A4c fibres . 19
Table C.2 – Mechanical requirements specific to A4c fibres . 19
Table C.3 – Transmission requirements specific to A4c fibres . 20
Table D.1 – Dimensional requirements specific to A4d fibres . 21
Table D.2 – Mechanical requirements specific to A4d fibres . 21
Table D.3 – Transmission requirements specific to A4d fibres. 22
Table E.1 – Dimensional requirements specific to A4e fibres . 23
Table E.2 – Mechanical requirements specific to A4e fibres . 23
Table E.3 – Transmission requirements specific to A4e fibres . 24
Table G.1 – Dimensional requirements specific to A4g fibres . 26
Table G.2 – Mechanical requirements specific to A4g fibres . 26
Table G.3 – Transmission requirements specific to A4g fibres . 27
Table H.1 – Dimensional requirements specific to A4h fibres . 28
Table H.2 – Mechanical requirements specific to A4h fibres . 28
Table H.3 – Transmission requirements specific to A4h fibres. 29
Table I.1 – Dimensional requirements specific to A4i fibres . 30
Table I.2 – Mechanical requirements specific to A4i fibres . 30
Table I.3 – Transmission requirements specific to A4i fibres . 31
Table J.1 – Mode Scrambler parameters . 32
Table K.1 – Transmission requirements specific to A4a.2 fibre. 33

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SIST EN IEC 60793-2-40:2021
IEC 60793-2-40:2021 © IEC 2021 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

OPTICAL FIBRES –

Part 2-40: Product specifications –
Sectional specification for category A4 multimode fibres

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 60793-2-40 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This fifth edition cancels and replaces the fourth edition published in 2015. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revision of NA range of A4a.2;
b) addition of a new subcategory A4i;
c) deletion of the subcategory A4f and of Annex F.

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SIST EN IEC 60793-2-40:2021
– 6 – IEC 60793-2-40:2021 © IEC 2021
The text of this International Standard is based on the following documents:
CDV Report on voting
86A/1943/CDV 86A/1981/RVC

Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60793 series, published under the general title Optical fibres, can
be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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SIST EN IEC 60793-2-40:2021
IEC 60793-2-40:2021 © IEC 2021 – 7 –
OPTICAL FIBRES –

Part 2-40: Product specifications –
Sectional specification for category A4 multimode fibres



1 Scope
This part of IEC 60793 is applicable to category A4 optical multimode fibres and the related
subcategories A4a, A4b, A4c, A4d, A4e, A4g, A4h and A4i. These fibres have a plastic core
and plastic cladding and may have step-index, multi-step index or graded-index profiles. The
fibres are used in information transmission equipment and other applications employing similar
light transmitting techniques, and in fibre optic cables. Table 1 summarizes some of the salient
characteristics and applications of these fibres.
Table 1 – Characteristics and applications of category A4 fibres
Sub-category A4a A4b A4c A4d A4e A4f A4g A4h A4i
A4a.1 A4a.2
Core diameter
a a a a c
≥ 500 120 62,5 55

(µm)
Cladding
d
c
1 000 750 500 1 000 750 490
490 245

diameter (µm)
Numerical
aperture Na
ff c
0,50 0,53 0,50 0,50 0,30 0,25 0,190 0,190 0,24

e

Operating 650
850
b
c
wave-length(s) 650 650 650 650 850 850
650

1 300
(nm) 1 300
c
Applications Digital audio Industrial Sensor Digital Digital Data Data Industrial

interface, automobile, and audio- audio- trans- trans- data
industrial, sensor and sensor visual visual mission mission; trans-
data transmission interface interface primarily mission
and data and data used in
trans- trans- ribbon
mission mission structures
a
Typically 15 µm to 35 µm smaller than the cladding diameter.
b
Other potential wavelengths for A4a fibre are described in Annex K.
c
This sub-category is outdated and therefore no more specified.
d
Cladding diameters of 490 µm and 750 µm are also possible.
e
Na is numerical aperture measured by far field pattern method.
ff

In addition to the applications shown in Table 1, other applications for A4 fibres include, but are
not restricted to, the following: support for short reach, high bit-rate systems in telephony,
distribution and local networks, carrying data, voice and/or video services and on-premises
intrabuilding and interbuilding fibre installations, including local area networks (LANs), private
branch exchanges (PBXs), video, various multiplexing uses and miscellaneous related uses,
such as consumer electronics and industrial and mobile networks.
Three types of requirements apply to A4 fibres:
• general requirements, as defined in IEC 60793-2;
• specific requirements common to category A4 multimode fibres covered in this document
and which are given in Clause 4;

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SIST EN IEC 60793-2-40:2021
– 8 – IEC 60793-2-40:2021 © IEC 2021
• particular requirements applicable to individual fibre sub-categories and implementations or
specific applications which are defined in this document, in the normative family
specification annexes.
2 Normative references
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 dat
...