EN 60793-1-47:2009

SLOVENSKI STANDARD
01-september-2009
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SIST EN 60793-1-47:2007
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Optical fibres - Part 1-47: Measurement methods and test procedures - Macrobending
loss (IEC 60793-1-47:2009)
Lichtwellenleiter - Teil 1-47: Messmethoden und Prüfverfahren - Makrobiegeverlust (IEC
60793-1-47:2009)
Fibres optiques - Partie 1-47: Méthodes de mesure et procédures d'essai - Pertes dues
aux macrocourbures (CEI 60793-1-47:2009)
Ta slovenski standard je istoveten z: EN 60793-1-47:2009
ICS:
33.180.10 2SWLþQDYODNQDLQNDEOL Fibres and cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60793-1-47
NORME EUROPÉENNE
June 2009
EUROPÄISCHE NORM
ICS 33.180.10 Supersedes EN 60793-1-47:2007

English version
Optical fibres -
Part 1-47: Measurement methods and test procedures -
Macrobending loss
(IEC 60793-1-47:2009)
Fibres optiques -  Lichtwellenleiter -
Partie 1-47: Méthodes de mesure Teil 1-47: Messmethoden
et procédures d'essai - und Prüfverfahren -
Pertes dues aux macrocourbures Makrobiegeverlust
(CEI 60793-1-47:2009) (IEC 60793-1-47:2009)

This European Standard was approved by CENELEC on 2009-05-01. 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, 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

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60793-1-47:2009 E
Foreword
The text of document 86A/1207/CDV, future edition 3 of IEC 60793-1-47, prepared by SC 86A, Fibres
and cables, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was
approved by CENELEC as EN 60793-1-47 on 2009-05-01.
This European Standard supersedes EN 60793-1-47:2007.
The main change from EN 60793-1-47:2007 is listed below:
– introduction of the Annex A describing small bend radius phenomena.
This standard is to be read in conjunction with EN 60793-1-1.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2010-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-05-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60793-1-47:2009 was approved by CENELEC as a European
Standard without any modification.
__________
– 3 – EN 60793-1-47:2009
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

1) 2)
IEC 60793-1-1 - Optical fibres - EN 60793-1-1 2008
Part 1-1: Measurement methods and test
procedures - General and guidance

1) 2)
IEC 60793-1-40 - Optical fibres - EN 60793-1-40 2003
(mod) Part 1-40: Measurement methods and test
procedures - Attenuation
1) 2)
IEC 60793-1-46 - Optical fibres - EN 60793-1-46 2002
Part 1-46: Measurement methods and test
procedures - Monitoring of changes in optical
transmittance
1) 2)
IEC 61280-4-1 - Fibre-optic communication subsystem test EN 61280-4-1 2004
procedures -
Part 4-1: Cable plant and links - Multimode
fibre-optic cable plant attenuation
measurement
1)
Undated reference.
2)
Valid edition at date of issue.

IEC 60793-1-47 ®
Edition 3.0 2009-03
INTERNATIONAL
STANDARD
Optical fibres –
Part 1-47: Measurement methods and test procedures – Macrobending loss

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
P
ICS 33.180.10 ISBN 2-8318-1033-5
– 2 – 60793-1-47 © IEC:2009(E)
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Specimen .7
3.1 Specimen length.7
3.1.1 Method A – Fibre winding .7
3.1.2 Method B – Quarter circle bends .7
3.2 Specimen end face.7
4 Apparatus.7
4.1 Method A – Fibre winding .7
4.2 Method B – Quarter circle bends .7
5 Procedure .8
5.1 Method A – Fibre winding .8
5.1.1 General .8
5.1.2 Single-mode fibres .9
5.1.3 Multimode (A1) fibres .10
5.2 Method B – Quarter circle bends .10
6 Calculations .12
7 Results .12
7.1 Information available with each measurement .12
7.2 Information available upon request.12
8 Specification information .13
Annex A (informative) Small bend radius phenomena .14
Bibliography.16

Figure 1 – Quarter circle guide groove in plate.8
Figure 2 – Multiple bends using stacked plates .11
Figure A.1 – Loss curves versus curve fits .14

60793-1-47 © IEC:2009(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 1-47: Measurement methods and test procedures –
Macrobending loss
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 IEC 60793-1-47 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This third edition cancels and replaces the second edition published in 2006. It constitutes a
technical revision. The main change is listed below:
• Introduction of the Annex A describing small bend radius phenomena.
This standard is to be read in conjunction with IEC 60793-1-1.

– 4 – 60793-1-47 © IEC:2009(E)
The text of this standard is based on the following documents:
CDV Report on voting
86A/1207/CDV 86A/1240/RVC
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.
A list of all parts of 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 publication will remain unchanged until
the maintenance result 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.

60793-1-47 © IEC:2009(E) – 5 –
INTRODUCTION
Publications in the IEC 60793-1 series concern measurement methods and test procedures as
they apply to optical fibres.
Within the same series, several different areas are grouped, but all numbers are possibly not
used, as follows:
– Parts 1-10 to 1-19: General
– Parts 1-20 to 1-29: Measurement methods and test procedures for dimensions
– Parts 1-30 to 1-39: Measurement methods and test procedures for m
...