IEC 61753-021-02:2023

IEC 61753-021-02 ®
Edition 1.0 2023-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Performance
standard –
Part 021-02: Single-mode fibre optic connectors terminated as pigtails and
patchcords for category C – Controlled environment

Dispositifs d’interconnexion et composants passifs fibroniques – Norme de
performance –
Partie 021-02: Connecteurs à fibres optiques unimodales raccordés comme des
fibres amorces ou des cordons de brassage pour la catégorie C –
Environnement contrôlé
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IEC 61753-021-02 ®
Edition 1.0 2023-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components – Performance

standard –
Part 021-02: Single-mode fibre optic connectors terminated as pigtails and

patchcords for category C – Controlled environment

Dispositifs d’interconnexion et composants passifs fibroniques – Norme de

performance –
Partie 021-02: Connecteurs à fibres optiques unimodales raccordés comme des

fibres amorces ou des cordons de brassage pour la catégorie C –

Environnement contrôlé
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20  ISBN 978-2-8322-7612-9

– 2 – IEC 61753-021-02:2023 © IEC 2023
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 7
4 Tests . 8
5 Test report . 8
6 Reference components . 8
7 Performance requirements. 8
7.1 General . 8
7.2 Dimensions . 8
7.3 Sample size and test sequencing . 8
7.4 Endface geometry . 8
7.5 Visual examination . 9
7.6 Performance criteria . 9
7.7 Performance details . 10
Annex A (normative) Sample size . 16
Annex B (normative) Visual examination of outer cable sheath movement . 17
B.1 Overview. 17
B.2 Preparation of the sample and initial visual examination . 17
B.3 Final visual examination of outer cable sheath movement . 17
Bibliography . 19

Figure 1 – Pigtail test sample . 7
Figure 2 – Patchcord test sample . 7
Figure B.1 – Example of initial marking of the cable sheath . 17
Figure B.2 – Example of final visual examination . 18

Table 1 – Pass/Fail criteria . 9
Table 2 – Performance test details . 11
Table A.1 – Sample size . 16

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS – PERFORMANCE STANDARD –

Part 021-02: Single-mode fibre optic connectors terminated as pigtails
and patchcords for category C – Controlled environment

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
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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
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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) 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
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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.
IEC 61753-021-02 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 first edition cancels and replaces the second edition of IEC 61753‑021‑2 published in 2007.
This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to
IEC 61753‑021‑2:2007:
a) changed scope to remove restrictions on attenuation and return loss grades;
b) included provisions for rectangular ferrule connectors;

– 4 – IEC 61753-021-02:2023 © IEC 2023
c) changed the terms and definitions of the different types of test samples (pigtail test samples
and patchcord test samples) used in the various tests to avoid confusion;
d) updated fibre naming conventions according to IEC 60793-2-50 and added provisions for
B-657 fibres;
e) added all the attenuation and return loss grades defined in IEC 61753-1;
f) test severities updated according to IEC 61753-1;
g) reduced flexing of strain relief cycles from 100 cycles to 50 cycles;
h) added the torsion test;
i) reduced the duration of the fibre/cable retention test on reinforced cables from 120 s to 60 s
minimum;
j) removed the static side load test;
k) reduced the number of mating durability cycles from 500 cycles to 200 cycles and added
provisions for rectangular ferrule connectors;
l) added Annex B for visual examination of the outer cable sheath movement of reinforced
cables as an additional requirement for change of temperature, cable retention and flexing
of the strain relief tests.
The text of this International Standard is based on the following documents:
Draft Report on voting
86B/4793/FDIS 86B/4812/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 of the IEC 61753 series, published under the general title Fibre optic
interconnecting devices and passive components – Performance standard, 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.
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS – PERFORMANCE STANDARD –

Part 021-02: Single-mode fibre optic connectors terminated as pigtails
and patchcords for category C – Controlled environment

1 Scope
This part of IEC 61753 defines the minimum initial test and measurement requirements and
severities which single-mode fibre optic connectors terminated as a pigtail or a patchcord satisfy
in order to be categorized as meeting the IEC standard category C (controlled environment), as
defined in IEC 61753-1.
If tests were performed on the connectors terminated as pigtails or patchcords for categories
HD HD HD
OP+ , OP+, OP, OP , or C and the product passed, the product will be automatically
qualified or categorized as meeting the IEC standard for category C.
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 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres
IEC 60794-2-50, Optical fibre cables – Part 2-50: Indoor cables – Family specification for
simplex and duplex cables for use in terminated cable assemblies
IEC 61300-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 1: General and guidance
IEC 61300-2-1, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-1: Tests – Vibration (sinusoidal)
IEC 61300-2-2, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-2: Tests – Mating durability
IEC 61300-2-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-4: Tests – Fibre or cable retention
IEC 61300-2-5, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-5: Tests – Torsion
IEC 61300-2-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-6: Tests – Tensile strength of coupling mechanism
IEC 61300-2-12, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-12: Tests – Impact

– 6 – IEC 61753-021-02:2023 © IEC 2023
IEC 61300-2-17, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-17: Tests – Cold
IEC 61300-2-18, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-18: Tests – Dry heat
IEC 61300-2-19, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-19: Tests – Damp heat (steady state)
IEC 61300-2-22, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-22: Tests – Change of temperature
IEC 61300-2-44, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-44: Tests – Flexing of the strain relief of fibre optic devices
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
changes in attenuation and return loss
IEC 61300-3-4, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-4: Examinations and measurements – Attenuation
IEC 61300-3-6, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61300-3-28, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-28: Examinations and measurements – Transient loss
IEC 61300-3-34, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-34: Examinations and measurements – Attenuation of
random mated connectors
IEC 61300-3-45, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 3-45: Examinations and measurements – Attenuation of
random mated multi-fibre connectors
IEC 61753-1, Fibre optic interconnecting devices and passive components – Performance
standard – Part 1: General and guidance
IEC 61754 (all parts), Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces
IEC 61755 (all parts), Fibre optic interconnecting devices and passive components – Connector
optical interfaces for single-mode fibres
IEC 61755-2 (all parts), Fibre optic interconnecting devices and passive components –
Connector optical interfaces for single-mode fibres – Part 2: Connection parameters of
dispersion unshifted physically contacting fibres
IEC 61755-3 (all parts), Fibre optic interconnecting devices and passive components –
Connector optical interfaces for single-mode fibres – Part 3: Connector parameters of
dispersion unshifted physically contacting fibres

ISO/IEC 11801 (all parts), Information technology – Generic cabling for customer premises
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61753‑1 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
change in attenuation
δ
large or small deviation from the original value of the transmitted power at the start of the test
3.2
sample
complete set of connector components required to provide demountable coupling between one
or more pairs of optical fibres
3.3
pigtail test sample
two pigtails mated with an adaptor
Note 1 to entry: See Figure 1.

Figure 1 – Pigtail test sample
3.4
patchcord test sample
patchcord mated to two pigtails using adaptors
Note 1 to entry: See Figure 2.

Figure 2 – Patchcord test sample

– 8 – IEC 61753-021-02:2023 © IEC 2023
4 Tests
All test and measurement methods have been selected from the IEC 61300 series and the test
parameters and requirements from IEC 61753‑1 as defined in 7.6 and 7.7. Additional
requirements to certain tests are given in Annex B.
The connector plugs under test shall be terminated onto a single-mode fibre in accordance with
IEC 60793-2-50, type B‑652 or B‑657, in either buffered or reinforced cable format. The
reinforced cable used for the pigtails or patchcords shall conform to the requirements of
IEC 60794-2-50. The minimum bend radius of the cable shall be maintained. The connector
interface standard shall meet the dimensions of the relevant part of the IEC 61754 series and
the connector optical interface standard shall meet the relevant requirements of the IEC 61755
series.
The optical connector requirements shall be met in order to be in accordance with the
ISO/IEC 11801 series.
5 Test report
Fully documented test reports and supporting evidence shall be prepared and available for
inspection as evidence that the tests have been carried out and the results are satisfactory.
6 Reference components
No reference components are required to perform the tests in this document.
7 Performance requirements
7.1 General
Unless otherwise specified, all tests shall be carried out at standard atmospheric conditions as
specified in IEC 61300-1.
7.2 Dimensions
Dimensions shall comply with the appropriate IEC interface standard as defined in the
IEC 61754 series.
7.3 Sample size and test sequencing
For the purposes of this document, a sample is composed of pigtail test samples or patchcord
test samples (see Clause 3). The sample sizes to be used for the tests shall be as defined in
Annex A. The tests are not intended to be performed in any particular sequence or grouping,
but rather, individually on new samples. Samples for the first test (attenuation) are to be
randomly selected and randomly mated new products. Samples for the second test (return loss)
are the same plugs selected and mated for the first test. Samples from the previous tests may
be used if desired. If a failure occurs on a sample that was tested in a previous test, a new set
of samples shall be prepared, and the failed test shall be re-done.
7.4 Endface geometry
The connector endface shall comply with the endface geometry requirements of the applicable
IEC optical interface standard as defined in the IEC 61755-3 series. Compliance with the
appropriate optical interface standard shall be confirmed on all samples before the start of
testing and after each of the tests have been completed. Non-compliance with the endface
geometry requirements of the applicable optical interface standard on any connector tested
results in a failure of this document.

7.5 Visual examination
A visual examination shall be carried out on all samples before and after each of the mechanical
and climatic tests (see Table 2). The outer cable sheath of the samples with reinforced cable
shall be marked at the end of the connector boot during the initial visual examination (see
Annex B).
The connector endface shall comply with the visual requirements for defects and scratches
according to the relevant part of the IEC 61755‑2 series.
7.6 Performance criteria
The optical performance levels shall meet the requirements of one specified grade as defined
in IEC 61753-1 (see Table 1).
Table 1 – Pass/Fail criteria
Criterion Examinations and Initial During or after test, or both
no. measurements
1 Attenuation – random Grade B:
mate
≤ 0,12 dB mean
IEC 61300-3-34 for
≤ 0,25 dB max. for ≥ 97 %
cylindrical ferrules
of samples
IEC 61300-3-45 for
Grade C:
rectangular ferrules
≤ 0,25 dB mean
≤ 0,50 dB max. for ≥ 97 %
of samples
Grade D:
≤ 0,50 dB mean
≤ 1,00 dB max. for ≥ 97 %
of samples
At 1 310 nm, 1 550 nm
a
and 1 625 nm
2 Return loss Grade 1: ≥ 60 dB The initial requirement shall be met.
IEC 61300-3-6
Grade 2: ≥ 45 dB
Grade 3: ≥ 35 dB
Grade 4: ≥ 26 dB
a
3 Active monitoring of
Change in attenuation during test :
changes in
δ ≤ 0,2 dB at 1 310 nm and 1 550 nm and
attenuation and return
δ ≤ 0,3 at 1 625 nm for pigtail test sample
loss (multiple path)
(1 connection)
IEC 61300-3-3
δ ≤ 0,5 dB at 1 310 nm, δ ≤ 0,6 dB at
1 550 nm and δ ≤ 0,8 dB at 1 625 nm for
patchcord test sample (2 connections)
a
Change in attenuation after test :
δ ≤ 0,2 dB at 1 310 nm, 1 550 nm and
1 625 nm for pigtail test sample
(1 connection)
δ ≤ 0,4 dB at 1 310 nm, 1 550 nm and
1 625 nm for patchcord test sample
(2 connections)
The initial return loss requirement shall be
met.
– 10 – IEC 61753-021-02:2023 © IEC 2023
Criterion Examinations and Initial During or after test, or both
no. measurements
a
4 Transient loss
Change in attenuation during test :
IEC 61300-3-28
δ ≤ 0,5 dB at 1 550 nm per connection
δ ≤ 1,0 dB at 1 625 nm per connection
a
Change in attenuation after test :
δ ≤ 0,2 dB at 1 550 nm and 1 625 nm per
connection
5 Visual inspection The connector plugs and After the test, the sample shall be inspected
adaptors shall be and comply with the initial requirements.
IEC 61300-3-1
inspected for damage that
might impair the
performance. This
inspection shall include:
– distortion of housing
parts, as indicated by
difficulty in insertion,
improper snap-fits,
etc.;
– distortion of ferrules
and sleeves, as
indicated by change
in mating force,
changes in endface
geometry, etc.;
– housing cracks;
– presence of debris,
shavings, etc.;
– corrosion or residue;
– ferrule endface
cracks, chips or
scratches;
– other potentially
service-affecting
damage.
a
Testing at 1 625 nm is optional for enterprise applications but required for carrier applications.

7.7 Performance details
Performance details are specified in Table 2.

Table 2 – Performance test details
No. Test Requirements Details
1 Attenuation Criterion no. 1 (Table 1) IEC 61300-3-34, method 1 (cylindrical ferrules)
(random mate) IEC 61300-3-45, method 1 (rectangular ferrules)
Launch mode conditions: only the fundamental mode
shall propagate at the connector interface and at the
detector.
Source characteristics reference to
IEC 61300-3-4 (attenuation)
Sample shall be optically functioning.
Preconditioning procedure: clean plug and adaptor
according to manufacturer’s instructions.
2 Return loss Criterion no. 2 (Table 1) IEC 61300-3-6, method 1
(random mate)
Mating combinations according to:
IEC 61300-3-34, method 1 (cylindrical ferrules)
IEC 61300-3-45, method 1 (rectangular ferrules)
Launch fibre length: L > 2 m
Source stability: ±0,20 dB from the initial value over
the measuring period or at least 1 h
Detector linearity: ±2,5 % of the power levels to be
measured
Directivity: > 65 dB
Sample shall be optically functioning.
Preconditioning procedure: clean plug and adaptor
according to manufacturer’s instructions.
Alternative method: IEC 61300-3-6, method 2
Launch fibre length: L ≥ 500 m, L ≥ 6 m, L ≥ 6 m
1 2 3
Pulse duration: ≤ 10 ns
Sample shall be optically functioning.
Preconditioning procedure: clean plug and adaptor
according to manufacturer’s instructions.
3 Vibration During and after: IEC 61300-2-1
(sinusoidal)
Criterion no. 4 (Table 1) Frequency range: 10 Hz to 55 Hz
After: Change in frequency: 1 octave/min
Criterion no. 2 (Table 1) Number of axes: three orthogonal
Criterion no. 5 (Table 1) Number of sweeps per axis: 15 (10 Hz to 55 Hz to
10 Hz)
Vibration amplitude: 0,75 mm
Sampling rate: before, during and after each axis.
Method of mounting: an adaptor shall be mounted
rigidly to the mounting fixture.
Sample shall be optically functioning.
Preconditioning procedure: clean plug and adaptor
according to manufacturer’s instructions.
The connector samples shall not be uncoupled or
cleaned anytime during the test.

– 12 – IEC 61753-021-02:2023 © IEC 2023
No. Test Requirements Details
4 Cold During and after: IEC 61300-2-17
Criterion no. 3 (Table 1) Temperature: –10 °C ± 2 °C
After: Duration of exposure: 96 h
Criterion no. 5 (Table 1) Test sample configuration in the environmental
chamber: see IEC 61300-1.
Sampling rate: before and after test and at a maximum
interval of 1 h during the test.
Preconditioning procedure: before test, samples shall
be maintained at standard atmospheric conditions for
2 h. Clean plug and adaptor according to
manufacturer’s instructions.
Recovery procedure: after test, samples shall be
maintained at standard atmospheric conditions for 2 h.
The connector samples shall not be uncoupled or
cleaned anytime during the test.
5 Dry heat During and after: IEC 61300-2-18
Criterion no. 3 (Table 1) Temperature: +60 °C ± 2 °C
After: Duration of exposure: 96 h
Test sample configuration in the environmental
Criterion no. 5 (Table 1)
chamber: See IEC 61300-1.
Sampling rate: before and after test and at a maximum
interval of 1 h during the test.
Preconditioning procedure: before test, samples shall
be maintained at standard atmospheric conditions for
2 h. Clean plug and adaptor according to
manufacturer’s instructions.
Recovery procedure: after test, samples shall be
maintained at standard atmospheric conditions for 2 h.
The connector samples shall not be uncoupled or
cleaned anytime during the test.
6 Damp heat During and after: IEC 61300-2-19
(steady state)
Criterion no. 3 (Table 1) Temperature: +40 °C ± 2 °C
After:
+2
Relative humidity: 93 % %
–3
Criterion no. 5 (Table 1)
Duration of exposure: 96 h
Test sample configuration in the environmental
chamber: see IEC 61300-1.
Sampling rate: before and after test and at a maximum
interval of 1 h during the test.
Preconditioning procedure: before test, samples shall
be maintained at standard atmospheric conditions for
2 h. Clean plug and adaptor according to
manufacturer’s instructions.
Recovery procedure: after test, samples shall be
maintained at standard atmospheric conditions for 2 h.
The connector samples shall not be uncoupled or
cleaned anytime during the test.

No. Test Requirements Details
7 Change of During and after: IEC 61300-2-22
temperature
Criterion no. 3 (Table 1) High temperature dwell: +60 °C ± 2 °C
After: Low temperature dwell: –10 °C ± 2 °C
Criterion no. 5 (Table 1) Duration at each dwell temperature: 1 h
Sheath visual Ramp time: 1 °C/min
examination for test
Number of cycles: 5
samples with reinforced
cable: see Annex B
Test sample configuration in the environmental
chamber: see IEC 61300-1.
Sample shall be optically functioning.
Sampling rate: initially at room ambient, after 0,5 h
during each dwell (measurements to be completed
during dwell) and at the end of the test at standard
atmospheric conditions.
Preconditioning procedure: before test, samples shall
be maintained at standard atmospheric conditions for
2 h.
Recovery procedure: after test, samples shall be
maintained at standard atmospheric conditions for 2 h.
The connector samples shall not be uncoupled or
cleaned any time during the test.
8 Flexing of the During and after: IEC 61300-2-44
strain relief of
Criterion no. 4 (Table 1) Magnitude of the tensile load: 2,0 N ± 0,5 N for
fibre optic devices
connectors with reinforced cable
After:
Cycle: 0° to +90° to 0° to –90° to 0° (continuous with
Criterion no. 2 (Table 1)
reversing at ±90°)
Criterion no. 5 (Table 1)
Number of cycles: 50
Sheath visual
Rate of application of the tensile load: gradually apply
examination for test
load to avoid any sudden jerking or straining of the
samples with reinforced
cable.
cable: see Annex B
Point of application of tensile load: 25 cm ± 5 cm from
NOTE This test does not
cable entrance to plug.
apply to connectors
without reinforced cable. Method of mounting: an adaptor shall be mounted
rigidly to the test fixture. The orientation of the
connector plug shall be reported in the test report.
Preconditioning procedure: clean plug and adaptor
according to manufacturer’s instructions.
The connector samples shall not be uncoupled or
cleaned at any time during the test.

– 14 – IEC 61753-021-02:2023 © IEC 2023
No. Test Requirements Details
9 Torsion During: IEC 61300-2-5
Criterion no. 3, Magnitude of the tensile load for reinforced cables:
Attenuation only (Table 1) 10 N ± 2 N
After: Magnitude of the tensile load for buffered and primary
coated fibres: 2,0 N ± 0,5 N
Criterion no. 3 (Table 1)
Rate of application of the tensile load: gradually apply
Criterion no. 5 (Table 1)
load to avoid .any sudden jerking or straining of the
cable
Cycle: ±180° minimum
Number of cycles: 25
Point of application of tensile load: 25 cm ± 5 cm
Sampling rate: Initially, after the load has reached its
maximum level and been maintained for a minimum of
10 s, and during test while load remains applied and
torsion rotation is at maximum positions.
Sample shall be optically functioning.
Preconditioning procedure: clean plug and adaptor
according to manufacturer’s instructions.
10 Fibre or cable During and after:
IEC 61300-2-4
retention
Magnitude and rate of application of the load for
Criterion no. 3 (Table 1)
reinforced cables: 50 N ± 2 N at 5 N/s
After:
Magnitude and rate of application of the load for tubes
Criterion no. 5 (Table 1)
or cables without aramid yarns: 10 N ± 2 N at 2 N/s
Sheath visual Magnitude and rate of application of the load for
examination for test
buffered fibres: 5,0 N ± 0,5 N at 0,5 N/s
samples with reinforced
Magnitude and rate of application of the load for
cable: see Annex B
primary coated fibres: 2,0 N ± 0,5 N at 0,5 N/s
Duration: 60 s minimum
Point of application of tensile load: 200 mm to 300 mm
from the end face of the connector.
Sampling rate: Initially and after the load has reached
its maximum level and been maintained for a minimum
of 30 s.
Sample shall be optically functioning.
Preconditioning procedure: clean plug and adaptor
according to manufacturer’s instructions.
11 Impact After: IEC 61300-2-12, method A
Number of drops: 5 for each plug
Criterion no. 3 (Table 1)
Drop height: 1,5 m
Criterion no. 5 (Table 1)
Sampling rate: Initially and after the last drop
Sample shall be unmated during drop cycles.
Preconditioning procedure: clean plug and adaptor
according to manufacturer’s instructions. Place a dust
cap over the ferrule to protect the fibre endface.
Recovery procedure: the connector may be cleaned
after each drop before measurement.

No. Test Requirements Details
12 Tensile strength of During and after: IEC 61300-2-6
coupling
Magnitude and rate of application of the load:
Criterion no. 3 (Table 1)
mechanism
40 N ± 1 N at 2 N/s
After:
Duration: 60 s minimum
Criterion no. 5 (Table 1)
Sampling rate: Initially and after the load has reached
its maximum level and been maintained for a minimum
NOTE If a connector set
of 30 s.
or connector and device
combination has been
Sample shall be optically functioning.
previously tested and
Preconditioning procedure: clean plug and adaptor
passed with one
according to manufacturer’s instructions.
fibre/cable type, testing
the same connector set or
connector and device
combination with another
fibre/cable type is not
required.
13 Mating durability During and after: IEC 61300-2-2, measurement condition A
Criterion no. 3 (Table 1)
Coupling mechanism to be cycled:
plug-adaptor
After:
Cycling rate: not less than 3 s between each
Criterion no. 5 (Table 1)
engagement and separation
In the event that the
Number of cycles: 200 (cylindrical ferrules)
attenuation increases
above the allowable limit,
50 (rectangular ferrules)
the connector may be
cleaned as necessary but
Sample shall be optically functioning.
not more than 4 % of
Preconditioning procedure: clean plug and adaptor
matings during the course
according to manufacturer’s instructions.
of the test. The
measurement before the
Recovery procedure: the mechanical and optical
cleaning takes place shall
alignment parts of the sample may be cleaned
be discounted from the
according to manufacturer’s instructions up to 2 times
test results.
after the final mating cycle.
– 16 – IEC 61753-021-02:2023 © IEC 2023
Annex A
(normative)
Sample size
The tests in Table A.1 are intended to be performed individually on products selected as defined
in 7.3, although products from a previous test may be used if desired. The tests may also be
performed in any order providing the product is selected as defined.
Table A.1 – Sample size
Test No. Test Sample size
Pigtail test sample Patchcord test
sample
1 Attenuation (random mate) 10 5
2 Return loss (random mate) 10 5
3 Vibration (sinusoidal) 5 --
4 Cold 5 5
5 Dry heat 5 5
6 Damp heat (steady state) 5 5
7 Change of temperature 5 5
8 Flexing of the strain relief of fibre optic devices 5 --
9 Torsion 5 --
10 Fibre or cable retention 5 --
11 Impact 5 --
12 Tensile strength of coupling mechanism 5 --
13 Mating durability 5 --
Annex B
(normative)
Visual examination of outer cable sheath movement
B.1 Overview
This visual examination shall be made for the test samples with reinforced cable to ensure that
the attachment of the cable sheath to the connector plug will withstand the environmental and
mechanical tests required in this document.
B.2 Preparation of the sample and initial visual examination
Preparation shall be made after initial visual examination (before all subsequent tests).
Mark the outer cable sheath at the end of the rear most connector component (e.g. boot, crimp
band, housing feature, etc.) at both ends of the sample as indicated in Figure B.1. The marks
are required to identify movement of the cable sheath caused by environmental and mechanical
stresses during subsequent tests.

NOTE The SC connector is shown as an example.
Figure B.1 – Example of initial marking of the cable sheath
If the connector plug has a shrink-tube as part of the boot, as for example in some types of LC
connector plugs, the mark shall be made on the outer cable sheath right at the end of the
shrink-tube.
B.3 Final visual examination of outer cable sheath movement
Final visual examination shall be made after all tests have been finished. The outer sheath
movement is visible through the movements of the marks at the outer cable sheath (see
Figure B.2). The allowed movement of the outer cable sheath relative to the rear most connector
component (e.g. boot, crimp band, housing feature, etc.) shall be 1 mm maximum at any
connector plug.
– 18 – IEC 61753-021-02:2023 © IEC 2023
Dimensions in millimetres
NOTE The SC connector is shown as an example.
Figure B.2 – Example of final visual examination

Bibliography
IEC 61300 (all parts), Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures
IEC 61754-4, Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces – Part 4: Type SC connector family
IEC 61754-20, Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces – Part 20: Type LC connector family

___________
– 20 – IEC 61753-021-02:2023 © IEC 2023
SOMMAIRE
AVANT-PROPOS . 21
1 Domaine d’application . 23
2 Références normatives . 23
3 Termes et définitions . 25
4 Essais . 26
5 Rapport d’essai . 26
6 Composants de référence .
...