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IEC 60794-1-2
Edition 5.0 2021-01
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Optical fibre cables –
Part 1-2: Generic specification – Basic optical cable test procedures – General
guidance
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IEC 60794-1-2
Edition 5.0 2021-01
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Optical fibre cables –
Part 1-2: Generic specification – Basic optical cable test procedures – General
guidance
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-9291-4
– 2 – IEC 60794-1-2:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 2
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 7
4 General guidance . 7
4.1 Test procedure format . 7
4.2 Standard atmospheric conditions . 7
4.3 Symbols and abbreviated terms . 8
4.4 Safety and environmental aspects. 8
4.5 Calibration . 8
4.5.1 Calibration process . 8
4.5.2 Assessment of uncertainties . 8
4.6 Preconditioning . 9
4.7 Guide to qualification sampling . 9
4.8 Optical launch conditions . 9
4.9 Standard optical test wavelengths . 9
Annex A (informative) Cross-references between new and old test method numbers . 10
Bibliography . 16
Table 1 – Document overview . 6
Table 2 – Standard optical test wavelengths . 9
Table 3 – Alternative optical test wavelengths . 9
Table A.1 – IEC 60794-1-1xx series . 10
Table A.2 – IEC 60794-1-2xx series . 11
Table A.3 – IEC 60794-1-3xx series . 12
Table A.4 – IEC 60794-1-4xx series . 12
Table A.5 – IEC 60794-1-21 method numbers . 12
Table A.6 – IEC 60794-1-22 method numbers . 14
Table A.7 – IEC 60794-1-23 method numbers . 14
Table A.8 – IEC 60794-1-24 method numbers . 15
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRE CABLES –
Part 1-2: Generic specification –
Basic optical cable test procedures –
General guidance
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
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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
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Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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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.
This redline version of the official IEC Standard allows the user to identify the changes made to
the previous edition IEC 60794-1-2:2017. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
– 4 – IEC 60794-1-2:2021 RLV © IEC 2021
International Standard IEC 60794-1-2 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 2017. This edition
constitutes an technical revision.
This edition includes the following significant technical change with respect to the previous
edition:
a) addition of cross-reference tables listing the new test method numbers and the previous test
method numbers.
The text of this International Standard is based on the following documents:
CDV Report on voting
86A/2009/CDV 86A/2057/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 International Standard is to be used in conjunction with IEC 60794-1-1.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60794 series, published under the general title Optical fibre cables,
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 web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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.
INTRODUCTION
IEC 60794-1-2:2013 comprised a detailed cross-reference table to the new document set, and
general guidance was given in IEC 60794-1-20. These two specifications have been combined
in this document, which allows for IEC 60794-1-20 to be withdrawn.
A decision has been reached to reorganize the IEC 60794-1-2 set of test methods into single-
subject documents. This will be a migration as the existing test methods are revised and as new
test methods are promulgated, rather than a wholesale rewrite. Part of this migration is a
decision to maintain the traditional letter-number classification and to use a numbering system
which maintains connection to the existing numbering system.
The new test method numbering format has been agreed, in line with IEC Secretariat guidelines,
to help the cross-referencing from old to new and that will make the updating of the relevant
sectional and product specifications easier. Cross-reference tables listing the new test method
numbers and the previous test method numbers have been included (see Annex A, Table A.1
to Table A.8).
The format agreed is as follows:
IEC 60794-1-Xnn
where
nd
X = 2 digit of the old 2-digit reference;
nn = incremental number (starting with old test method number).
For example:
IEC 60794-1-21 method E1 (tensile) becomes IEC 60794-1-101;
IEC 60794-1-22 method F5 (water penetration) becomes IEC 60794-1-205;
IEC 60794-1-23 method G7 (tube kinking) becomes IEC 60794-1-307;
IEC 60794-1-24 method H2 (lightning) becomes IEC 60794-1-402.
Annex A has been added to this document containing a cross-reference between the old and
new number scheme.
– 6 – IEC 60794-1-2:2021 RLV © IEC 2021
OPTICAL FIBRE CABLES –
Part 1-2: Generic specification –
Basic optical cable test procedures –
General guidance
1 Scope
This part of IEC 60794-1 applies to optical fibre cables for use with telecommunications
equipment and devices employing similar techniques, and to cables having a combination of
both optical fibres and electrical conductors.
The prime objective of this document is to provide the end user with an overview about the
c
...