IEC 61300-2-6:2023

IEC 61300-2-6 ®
Edition 3.0 2023-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-6: Tests – Tensile strength of coupling mechanism

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IEC 61300-2-6 ®
Edition 3.0 2023-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-6: Tests – Tensile strength of coupling mechanism
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-7935-9

– 2 – IEC 61300-2-6:2023 RLV © IEC 2023
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 General .
3 Terms and definitions . 5
4 Apparatus . 6
4.1 General . 6
4.2 Force generator . 7
4.3 Force gauge . 8
4.4 Clamping device . 8
4.5 Specimen mount .
4.6 Torque wrench .
4.5 DUT mount . 8
5 Procedure . 8
5.1 General . 8
5.2 Preconditioning . 8
5.3 Prepare specimens DUT . 9
5.4 Initial visual examinations and measurements . 9
5.5 Mount DUT . 9
5.6 Apply load . 9
5.7 Recovery . 9
5.8 Final examination and measurements . 9
6 Severity . 10
7 Details to be specified and reported. 10
Bibliography . 11

Figure 1 – Example of test apparatus . 7

Table 1 – Recommended severity values . 10

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –

Part 2-6: Tests – Tensile strength of coupling mechanism

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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. 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 61300-2-6:2010. 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 61300-2-6:2023 RLV © IEC 2023
IEC 61300-2-6 has been prepared by subcommittee 86B: Fibre optic interconnecting devices
and passive components, of IEC technical committee 86: Fibre optics. It is an International
Standard.
This third edition cancels and replaces the second edition published in 2010. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of normative references;
b) modification of the details to be specified;
c) addition of optical monitoring.
The text of this International Standard is based on the following documents:
Draft Report on voting
86B/4808/FDIS 86B/4825/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 61300 series, published under the general title Fibre optic
interconnecting devices and passive components – Basic test and measurement procedures,
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 webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IMPORTANT – The "colour inside" logo on the cover page of this document 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.

FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –

Part 2-6: Tests – Tensile strength of coupling mechanism

1 Scope
This part of IEC 61300 describes a test to ensure the coupling mechanism of a connector set
or connector and device combination withstands the axial loads likely to be applied during
normal service, and that the optical performance remains within the given specifications during
this test.
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 dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61300-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 1: General and guidance
IEC 61300-3-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-1: Examinations and measurements – Visual examination
IEC 61300-3-3, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-3: Examinations and measurements – Active monitoring of
change in attenuation and return loss
IEC 61753-1, Fibre optic interconnecting devices and passive components performance
standard – Part 1: General and guidance for performance standards
3 General
A tensile load is smoothly applied to a mated connector set or connector and device combination
in a direction that will separate the components. The load is normally applied between the
connector plug and the adapter or between the connector plug and the device being tested.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61300-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

– 6 – IEC 61300-2-6:2023 RLV © IEC 2023
4 Apparatus
4.1 General
The test apparatus shall be capable of applying an axial load between a connector plug or
coupling mechanism and an adapter or device in a direction that separates the components.
The tensile load is smoothly applied to the device under test (DUT) that consists of a mated
connector pair or connector and device combination.
An example of a test apparatus is shown in Figure 1. Some or all the following apparatus
components are required.
Direction
of force
Force gauge
Clamping device
Connector plug
Adapter
Specimen
mount
Force generator
IEC  2815/10
Key
1 force generator
2 force gauge
3 monitoring optical cable
4 connector plug
5 clamping device
6 adaptor or connector receptacles
7 DUT mount
Figure 1 – Example of test apparatus
4.2 Force generator
The force generator may shall be any device or apparatus capable of smoothly applying the
specified force at the specified rate.

– 8 – IEC 61300-2-6:2023 RLV © IEC 2023
4.3 Force gauge
A force gauge of specified accuracy shall be used to measure the axial force applied to the
DUT.
4.4 Clamping device
A suitable clamping device shall be used to couple transmit the force from the force generator
to the connector plug or coupling mechanism. Care shall be taken Ensure that, in the design
and use of the clamping device to ensure that, it does not apply compressive forces which might
can influence the mechanical performance of the connector plug or coupling mechanism, and
allows mating the connectors for optical monitoring. For connector types with a de-latching
mechanism (e.g. SC, MPO) a particular design shall be used in order to clamp the inner part of
these connectors as the axial load cannot be applied directly to the outer body which de-latches
the connector plug. Alternatively, a mandrel wrap on the cable may be used. However, the
mandrel wrap shall be of sufficient diameter to not cause additional attenuation. If a mandrel
wrap on the cable is used, the cable shall be reinforced cable. The distance between the
rearmost point of the cable fixing component of the DUT and the centre point of the mandrel
shall be between 200 mm and 300 mm. If a failure occurs while utilizing the alternate mandrel
wrap method, the failure should be investigated to ensure the failure was due to the latching
mechanism.
4.5 Specimen mount
Mount the specimen according to normal mounting procedures.
4.6 Torque wrench
A torque wrench may be required to assemble screw type connectors in accordance with the
manufacturer's instructions.
4.5 DUT mount
The mounting feature shall provide rigid fixing of the DUT and give enough clearance for plug
connection. The bend radius of the associated monitoring optical fibre cables shall be large
enough to avoid compromising the optical results.
5 Procedure
5.1 General
Mount the DUT according to normal mounting procedures. A tensile load is smoothly applied to
a mated connector set or connector and device combination in a direction that will act to
separate the components. The load is applied between the connector plug through the clamping
device and the adaptor or the device being tested.
Unless otherwise specified, the test shall be performed at the standard atmospheric conditions
specified in IEC 61300-1.
5.2 Preconditioning
Unless otherwise specified, pre-condition each prepared specimen for 2 h at the standard test
conditions specified in IEC 61300-1.
Precondition all parts of each DUT for minimum 2 h at the standard atmospheric conditions.

5.3 Prepare specimens DUT
Mate Assemble all parts of the specimens DUT according to the manufacturer's instructions.
For screw type couplings, use a torque wrench may be used to ensure that the couplings are
tightened to the proper torque value.
5.4 Initial visual examinations and measurements
Complete initial examinations and measurements on the specimen shall be made as required
by the relevant specification. Visual examination shall be done according to IEC 61300-3-1.
Visually examine each DUT and its components in accordance with IEC 61300-3-1.
Measure the initial optical performance of each DUT as required by the relevant specification.
5.5 Mount DUT
Securely mount one part of the DUT, usually the adaptor with connector adapter, switch,
attenuator, etc. plug or the device with connector receptacle to the stationary portion of the test
fixture. Fix Mount the other part of the DUT, usually the connector plug or coupling mechanism,
to the movable portion of the force generator attached clamping device or the mandrel.
Make sure the monitoring optical fibre cables connected for optical monitoring do not interfere
with the test equipment and do not present bending or tension that can influence the results of
the active optical monitoring.
Start the monitoring of the optical performance according to IEC 61300-3-3 and make a
measurement of the optical performance before applying the load.
5.6 Apply load
Smoothly apply the tensile load, as recommended in Table 1 or the specified rate, up to the
specified value and specified duration. Meanwhile, take the optical measurements at the interval
and wavelengths required by the relevant IEC 61753 performance standard.
After the load is applied for the specified duration, remove the tensile load from the DUT.
5.7 Recovery
Allow the DUT to remain under standard atmospheric conditions for at least 1 min, as defined
in IEC 61300-1, unless otherwise specified in the relevant IEC 61753 performance standard.
5.8 Final examination and measurements
Remove the tensile load from the specimen and the specimen from the test mounting. Unless
otherwise specified, visually examine the specimen and its component parts in accordance with
IEC 61300-3-1. Check for evidence of cracking, permanent deformation or other damage which
might impair its function, and against any other pass/fail criteria specified in the relevant
specification.
After the change of the optical performance according to IEC 61300-3-3 is measured and the
tensile load is removed, stop the monitoring of the optical performance.
Remove the DUT from the DUT mount. Measure the final optical performance as required by
the relevant IEC 61753 performance standard.
Visually examine each DUT and its component parts in accordance with IEC 61300-3-1. Check
for evidence of cracking, permanent deformation or other damage which might impair its

– 10 – IEC 61300-2-6:2023 RLV © IEC 2023
function or impact performance. Complete other final examinations on the DUT as required by
the relevant IEC 61753 performance standard.
6 Severity
The severity of the test is dependent upon the magnitude of the tensile load and, to a lesser
extent, the rate of application and duration of the load. The magnitude, rate of application and
duration of the load shall be given in the relevant specification. Recommended values of the
test parameters are given in Table 1. Table 1 shows the specified test severities in relation to
the performance categories. It is recommended to verify the test severities with the relevant
IEC 61753 performance standards and IEC 62005 reliability documents for the normative
values.
Table 1 – Recommended severity values
a
Tensile load Rate of application Duration
Category
N N/s s
HD HD
40 ± 1 2 60
C, C , OP, OP ,
+ +HD
OP , OP
HD
60 ± 1 2 60
I, I
U, E 40 ± 1 2 120
a
Categories are defined in IEC 61753-1.

7 Details to be specified and reported
The following details, as applicable, shall be specified in the specification and reported in the
test report:
− magnitude and rate of application of the tensile load;
− fibre type and length;
− pre-conditioning procedure;
− recovery procedure;
− optically functioning or non-functioning;
− initial examinations and measurements and performance requirements;
− examinations and measurements during test and performance requirements, if required;
− final examinations and measurements and performance requirements;
– tensile load and rate of application;
– duration of load application;
– coupling torque prior to testing, if necessary;
− optical measurement method, if necessary;
– optical measurement interval during the test;
– measurement wavelength(s);
– optical performance requirements during and after the test;
– additional pass/fail criteria;
– any deviation from this procedure.

Bibliography
IEC 61753-1, Fibre optic interconnecting devices and passive components – Performance
standard – Part 1: General and guidance

___________
IEC 61300-2-6 ®
Edition 3.0 2023-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 2-6: Tests – Tensile strength of coupling mechanism

Dispositifs d'interconnexion et composants passifs fibroniques – Procédures
fondamentales d’essais et de mesures –
Partie 2-6: Essais – Résistance à la traction du mécanisme de couplage
– 2 – IEC 61300-2-6:2023 © IEC 2023
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Apparatus . 5
4.1 General . 5
4.2 Force generator . 6
4.3 Force gauge . 7
4.4 Clamping device . 7
4.5 DUT mount . 7
5 Procedure . 7
5.1 General . 7
5.2 Preconditioning . 7
5.3 Prepare DUT . 7
5.4 Initial visual examinations and measurements . 7
5.5 Mount DUT . 7
5.6 Apply load . 8
5.7 Recovery . 8
5.8 Final examination and measurements . 8
6 Severity . 8
7 Details to be specified and reported. 9
Bibliography . 10

Figure 1 – Example of test apparatus . 6

Table 1 – Recommended severity values . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –

Part 2-6: Tests – Tensile strength of coupling mechanism

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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no pos
...