EN 60794-1-20:2014

SLOVENSKI STANDARD
01-junij-2014
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Optical fibre cables - Part 1-20: Generic specification - Basic optical cable test
procedures - General and Definitions
Ta slovenski standard je istoveten z: EN 60794-1-20:2014
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 60794-1-20
NORME EUROPÉENNE
April 2014
EUROPÄISCHE NORM
ICS 33.180.10 Supersedes EN 60794-1-2:2003 (partially)

English version
Optical fibre cables -
Part 1-20: Generic specification -
Basic optical cable test procedures -
General and definitions
(IEC 60794-1-20:2014)
Câbles à fibres optiques -  Lichtwellenleiterkabel -
Partie 1-20: Spécification générique - Teil 1-20: Fachgrundspezifikation -
Procédures fondamentales d’essais des Grundlegende Prüfverfahren für
câbles optiques - Lichtwellenleiterkabel -
Généralités et définitions Grundlegendes und Definitionen
(CEI 60794-1-20:2014) (IEC 60794-1-20:2014)

This European Standard was approved by CENELEC on 2014-02-21. 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, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60794-1-20:2014 E
Foreword
The text of document 86A/1476/CDV, future edition 1 of IEC 60794-1-20, 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 60794-1-20:2014.

The following dates are fixed:
(dop) 2014-11-21
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-02-21
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60794-1-2:2003 (PART).

EN 60794-1-2:2003:
This standard is intended to be used in conjunction with EN 60794-1-1.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60794-1-20:2014 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 60068-2-14 NOTE Harmonized as EN 60068-2-14.
IEC 60544 Series NOTE Harmonized in EN 60544 Series (not modified).
IEC 60793-1-22 NOTE Harmonized as EN 60793-1-22.
IEC 60793-1-32 NOTE Harmonized as EN 60793-1-32.
IEC 60793-1-54 NOTE Harmonized as EN 60793-1-54.
IEC 60794-1-2:2003 NOTE Harmonized as EN 60794-1-2:2003 (not modified).

- 3 - EN 60794-1-20:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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 60793-1 Series Optical fibres - EN 60793-1 Series
Part 1: Measurement methods and test
procedures
IEC 60793-1-40 - Optical fibres - EN 60793-1-40 -
Part 1-40: Measurement methods and test
procedures - Attenuation
IEC 60793-1-41 - Optical fibres - EN 60793-1-41 -
Part 1-41: Measurement methods and test
procedures - Bandwidth
IEC 60793-1-46 - Optical fibres - EN 60793-1-46 -
Part 1-46: Measurement methods and test
procedures - Monitoring of changes in optical
transmittance
IEC 60793-1-48 - Optical fibres - EN 60793-1-48 -
Part 1-48: Measurement methods and test
procedures - Polarization mode dispersion

IEC 60793-2 Series Optical fibres EN 60793-2 Series

IEC 60793-2-10 - Optical fibres - EN 60793-2-10 -
Part 2-10: Product specifications - Sectional
specification for category A1 multimode
fibres
IEC 60793-2-40 - Optical fibres - EN 60793-2-40 -
Part 40: Product specifications - Sectional
specification for category A4 multimode
fibres
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 Series Optical fibre cables - EN 60794-1 Series
Part 1: Generic specification
IEC 60794-1-1 - Optical fibre cables - EN 60794-1-1 -
Part 1-1: Generic specification - General

IEC 60794-1-2 2013 Optical fibre cables - EN 60794-1-2 2014
Part 1-2: Generic specification - Cross
reference table for optical cable test
procedures
IEC 60794-2 Series Optical fibre cables - EN 60794-2 Series
Part 2: Indoor cables
IEC 60794-3 Series Optical fibre cables - EN 60794-3 Series
Part 3: Outdoor cables
Publication Year Title EN/HD Year
IEC 60794-3-20 - Optical fibre cables - EN 60794-3-20 -
Part 3-20: Outdoor cables - Family
specification for self-supporting aerial
telecommunication cables
IEC 60794-4 - Optical fibre cables - EN 60794-4 -
Part 4: Sectional specification - Aerial optical
cables along electrical power lines

IEC 60794-5 - Optical fibre cables - EN 60794-5 -
Part 5: Sectional specification - Microduct
cabling for installation by blowing

IEC/TR 61931 - Fibre optic - Terminology - -

IEC/TR 62362 - Selection of optical fibre cable specifications - -
relative to mechanical, ingress, climatic or
electromagnetic characteristics - Guidance

ISO/IEC Guide 98-3 - Uncertainty of measurement - - -
Part 3: Guide to the expression of
uncertainty in measurement (GUM:1995)

ISO/IEC Guide 99 - International vocabulary of metrology - Basic - -
and general concepts and associated terms
(VIM)
ISO/IEC 11801 - Information technology - Generic cabling for - -
customer premises
IEC 60794-1-20 ®
Edition 1.0 2014-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical fibre cables –
Part 1-20: Generic specification – Basic optical cable test procedures – General

and definitions
Câbles à fibres optiques –
Partie 1-20: Spécification générique – Procédures fondamentales d’essais des

câbles optiques – Généralités et définitions

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 33.180.10 ISBN 978-2-8322-1365-0

– 2 – 60794-1-20 © IEC:2014
CONTENTS
FOREWORD . 3
1 Scope and object . 5
2 Normative references . 5
3 Terms and definitions . 6
3.1 Common terms . 6
3.2 Cable definitions . 7
3.3 Ribbon definitions . 7
4 General and guidance . 7
4.1 General . 7
4.2 Test procedure format . 7
4.3 Standard atmospheric conditions . 7
4.4 Standard test conditions . 7
4.5 Expanded test conditions . 7
4.6 Graphical symbols and terminology . 8
4.7 Safety and environmental aspects . 8
4.8 Calibration . 8
4.8.1 Calibration process . 8
4.8.2 Assessment of uncertainties . 8
4.9 Definition of “No change in attenuation” . 8
4.9.1 General . 8
4.9.2 No change in attenuation, single-mode (class B) . 9
4.9.3 No change in attenuation, multimode (category A1) . 9
4.9.4 No change in attenuation, plastic optical fibre (category A4) . 9
4.9.5 Allowable change in attenuation during mechanical

and environmental tests . 9
4.10 Definition of “No change in fibre strain” . 9
4.10.1 General . 9
4.10.2 Allowable change in fibre strain during mechanical
and environmental tests . 10
4.11 Preconditioning . 10
4.12 Cable load definitions . 10
4.13 Recovery time . 10
4.14 Cable qualification test plan . 10
5 Test procedures . 11
6 Test methods and cross references . 11
Annex A (normative) Optical launch conditions . 12
Bibliography . 13

Table 1 – Test methods – Cross reference . 11

60794-1-20 © IEC:2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 1-20: Generic specification –
Basic optical cable test procedures –
General and definitions
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 organizat
...