IEC 61753-021-6:2007

IEC 61753-021-6
Edition 1.0 2007-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components performance
standard –
Part 021-6: Grade B/2 single-mode fibre optic connectors for category O –
Uncontrolled environment
Norme de qualité de fonctionnement des dispositifs d’interconnexion et
composants passifs à fibres optiques –
Partie 021-6: Connecteurs à fibres optiques unimodales de classe B/2 pour la
catégorie O – Environnement non contrôlé

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IEC 61753-021-6
Edition 1.0 2007-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic interconnecting devices and passive components performance
standard –
Part 021-6: Grade B/2 single-mode fibre optic connectors for category O –
Uncontrolled environment
Norme de qualité de fonctionnement des dispositifs d’interconnexion et
composants passifs à fibres optiques –
Partie 021-6: Connecteurs à fibres optiques unimodales de classe B/2 pour la
catégorie O – Environnement non contrôlé

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
S
CODE PRIX
ICS 33.180.20 ISBN 2-8318-9325-9

– 2 – 61753-021-6 © IEC:2007
CONTENTS
FOREWORD.3
INTRODUCTION.5

1 Scope.6
2 Normative references .6
3 Terms and definitions .7
4 Test.8
5 Test report.9
6 Reference components.9
7 Performance requirements .9
7.1 Dimensions .9
7.2 Sample size, test sequencing and grouping.9
7.3 Endface geometry .9
7.4 Performance levels.9
7.5 Performance details .10

Annex A (normative) Sample size, test sequencing and grouping requirements .20

Figure 1 – Pigtail assembly.8
Figure 2 – Jumper cable assembly.8

Table 1 – Performance levels .10
Table 2 – Performance details .10

61753-021-6 © IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS
PERFORMANCE STANDARD –
Part 021-6: Grade B/2 single-mode fibre
optic connectors for category O –
Uncontrolled 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 co-operation on all questions concerning standardization in the electrical and electronic fields. To
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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.
International Standard IEC 61753-021-6 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
FDIS Report on voting
86B/2592/FDIS 86B/2616/RVD
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.

– 4 – 61753-021-6 © IEC:2007
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 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.
___________
NOTICE
This document contains material that is Copyright © 2006, Telcordia Technologies, Inc.
("Telcordia"). All rights reserved.
The reader is advised that this IEC document and Telcordia source(s) may differ, and the
context and use of said material in this IEC document may differ from that of Telcordia.
TELCORDIA MAKES NO REPRESENTATION OR WARRANTY, EXPRESS OR IMPLIED,
WITH RESPECT TO THE SUFFICIENCY, ACCURACY, OR UTILITY OF ANY INFORMATION
OR OPINION CONTAINED HEREIN. ANY USE OF OR RELIANCE UPON SAID
INFORMATION OR OPINION IS AT THE RISK OF THE USER. TELCORDIA SHALL NOT BE
LIABLE FOR ANY DAMAGE OR INJURY INCURRED BY ANY PERSON ARISING OUT OF
THE SUFFICIENCY, ACCURACY, OR UTILITY OF ANY INFORMATION OR OPINION
CONTAINED HEREIN.
61753-021-6 © IEC:2007 – 5 –
INTRODUCTION
Performance standards define the requirements for standard optical performance under a set
of specified conditions. Each standard contains a series or a set of tests and measurements
with clearly stated conditions, severities and pass/fail criteria. The series of tests, commonly
referred to as an operating service environment or performance category, is intended to be
run on a ‘one-off’ basis to prove the product’s ability to satisfy the requirements of a specific
application, market sector or user group.
The subsequent parts of this document define those sets of tests which form each operating
service environment or performance category and which have been standardized for
international use. A product that has been shown to meet all the requirements of a
performance standard may be declared as complying with that performance standard.
Products having the same classification from one manufacturer that satisfy a performance
standard will operate within the boundaries set by the performance standard. Intermateability
or interchangeability of products from different suppliers (having the same classification and
conforming to the same performance standard) can only be guaranteed when these products
also meet the interface standards. Only in this condition will an equivalent level of
performance be provided when they are used together (for example, in the case of optical
connectors).
Conformance to a performance standard is not a guarantee of lifetime assured performance
or reliability.
Reliability testing must be the subject of a separate test schedule, where the tests and
severities selected are truly representative of the requirements of this reliability test
programme. Consistency of manufacture should be maintained using a recognized Quality
Assurance programme whilst the reliability of the product should be evaluated using the
procedures recommended in IEC 62005.
Tests and measurements should be selected from the IEC 61300 series. Where this is not
possible, the required test method should be attached as an annex to the performance
standard.
– 6 – 61753-021-6 © IEC:2007
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS
PERFORMANCE STANDARD –
Part 021-6: Grade B/2 single-mode fibre
optic connectors for category O –
Uncontrolled environment
1 Scope
This part of IEC 61753 defines B/2 performance levels which a singlemode connector/cable
assembly must satisfy in order to be categorised as meeting the IEC standard, Category O –
Uncontrolled environment, as defined in Table A.4b of IEC 61753-1.
2 Normative references
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.
IEC 60793-2-50: Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres
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 61300-2-5, Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-5: Tests – Torsion/Twist
IEC 61300-2-12, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-12: Tests – Impact
IEC 61300-2-18, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-18: Tests – Dry heat – High temperature endurance
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 61300-2-26, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-26: Tests – Salt mist
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 61300-2-48, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-48: Tests – Temperature-humidity cycling

61753-021-6 © IEC:2007 – 7 –
IEC 61300-2-49, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-49: Tests – Connector installation test
IEC 61300-2-50, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 2-50: Tests – Fibre optic connector proof test with static
load – Singlemode and multimode
IEC 61300-2-51 Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-51: Tests – Fibre optic connector test for transmission with
applied tensile load – singlemode and multimode
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 61300-3-34, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-34: Examinations and measurements – Attenuation of
random mated connectors
IEC 61753-1:2007, Fibre optic interconnecting devices and passive components performance
standard – Part 1: General and guidance for performance standards
IEC 61754 (all parts), Fibre optic connector interfaces
IEC 61755 (all parts), Fibre optic connector optical interfaces
IEC 61755-3 (all parts), Fibre optic connector optical interfaces – Part 3: Optical interface
3 Terms and definitions
For the purposes of this document, the following definitions apply.
3.1
small form factor (SFF) connector
optical fibre connector with a ferrule with an outside diameter of less than 2,0 mm or a
connector designed to accommodate two or more optical fibres with at least the same
mounting density as the RJ-45 connector. SFF connectors have a smaller cross-sectional
area, about one-half that of traditional connectors
3.2
change in attenuation
peak-to-peak variation
3.3
sample
the complete set of connector components required to provide demountable coupling between
one or more pairs of optical fibres

– 8 – 61753-021-6 © IEC:2007
3.4
pigtail assembly
two connector plugs mated with an adapter with unterminated leads as shown in Figure 1
NOTE Each of the unterminated leads should be at least 3 m long so that the splices may be located outside of
the environmental test chamber.
Adapter
Connector
IEC  1967/07
Figure 1 – Pigtail assembly
3.5
jumper cable assembly
jumper cable terminated with plugs on each end, connected with adapters to two additional
connector plugs with unterminated leads on either end, as shown in Figure 2.
NOTE 1 The jumper cable should be (5 ± 0,5) m. Each of the unterminated leads should be long enough so that
the splices may be located outside of the environmental test chamber.
NOTE 2 The complete jumper cable assembly including the cable and both adaptors are located inside the
environmental test chamber
Adapter
Connector
IEC  1968/07
Figure 2 – Jumper cable assembly
4 Test
All test methods are in accordance with a specific IEC 61300 series standard as defined in 7.4
and 7.5.
The connectors under test shall be terminated onto singlemode fibre per IEC 60793-2-50,
type B1.1 or B1.3, in either secondary coated or cable format. The connector interface
standard shall meet the dimensions of IEC 61754 and the connector optical interface standard
shall meet the relevant requirements of IEC 61755.
Each test defines the number of samples to be evaluated. The sample set used for the first
test is to be composed of randomly selected and previously unstressed new samples. The
remaining tests are to be performed sequentially as per Tables 1 and 2 in 7.4 and 7.5
respectively, using the same samples.
The optical criteria for each test shall be as defined in 7.4.

61753-021-6 © IEC:2007 – 9 –
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 standard.
7 Performance requirements
7.1 Dimensions
Dimensions shall comply with the appropriate IEC interface standard as defined in IEC 61754.
7.2 Sample size, test sequencing and grouping
For the purposes of this standard, a sample is composed of pigtail assemblies and jumper
cable assemblies (see Clause 3). The sample sizes, test sequence, and grouping to be used
for the tests shall be as defined in Annex A. 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. All subsequent tests are
sourced from the mated plugs from the first and second test. After randomly selecting and
randomly mating the plugs for the first test, the plugs shall not be uncoupled or cleaned
anytime during the tests, except during impact and mating durability.
7.3 Endface geometry
The connector endface shall comply with the endface geometry requirements of the applicable
IEC optical interface standard as defined in IEC 61755-3. Compliance to the appropriate
optical interface standard shall be confirmed on all samples before the start of testing and
after all 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 performance standard.
7.4 Performance levels
The performance levels shall meet the requirements of Grade B/2 as defined in Table A.12 of
IEC 61753-1.
– 10 – 61753-021-6 © IEC:2007
Table 1 – Performance levels
Performance
Test name Initial During and after test
level
Attenuation, IEC 61300-3-34 ≤ 0,12 dB mean

≤ 0,25 dB max. for ≥ 97% of
samples
Return loss, IEC 61300-3-6
≥ 45 dB Return loss ≥ 45 dB during and
B/2
after test
Maximum variation ≤ 0,2 dB
Monitoring change in
during and after test for pigtail
attenuation and in return
assemblies
loss (multiple path
IEC 61300-3-3)
Maximum variation ≤ 0,5 dB
during and ≤ 0,4 dB after test
for jumper cable assemblies
7.5 Performance details
Performance details are specified in Table 2.
Table 2 – Performance details
No Test Requirements Details
1 Attenuation Grade B performance level: IEC 61300-3-34
(Method 2)
Mean ≤ 0,12 dB
DUT type 5, insertion method (2)
Maximum = 0,25 dB for ≥ 97%
of samples
Launch mode conditions: only the fundamental mode
shall propagate at the connector interface and at the

detector.
Test wavelengths:
Source characteristics: reference to IEC 61300-3-4
1 310 nm ± 30 nm and 1 550 nm
(attenuation)
± 30 nm (launch condition S4
and S5)
Specimen shall be optically functioning.
Preconditioning procedure: clean plug and adapter
according to manufacturer’s instructions.
2 Return loss Grade 2 performance level: IEC 61300-3-6, method branching devices
Minimum > 45 dB
Launch fibre length: L > 2 m
Test wavelengths:
Source stability: +0,20 dB over the measuring period
1 310 nm ± 20 nm and 1 550 nm
or at least 1 h
± 20 nm
Detector linearity: within 5% of the power levels to be
measured
Directivity: >65 dB
Specimen shall be optically functioning.
Preconditioning procedure: clean plug and adapter
according to manufacturer’s instructions.
Alternative method: IEC 61300-3-6 Method OTDR
Launch fibre length: L1 > 500 m, L2 > 6 m, L3 > 6m
Pulse duration: ≤10 ns
Specimen shall be optically functioning.
Preconditioning procedure: clean plug and adapter
according to manufacturer’s instructions.

61753-021-6 © IEC:2007 – 11 –
Table 2 (continued)
No Test Requirements Details
3 Dry heat - High Attenuation: IEC 61300-2-18
temperature All attenuation measurements
Temperature:
endurance shall meet the criteria specified
in 7.4.
Test condition A: +85 °C ± 2 °C for 168 h

Test condition B: +75 °C ± 2 °C for 336 h
Return loss:
Test condition B shall be used for products with LSZH
All return loss measurements
cables with temperature limitation of 75 °C; the longer
shall meet the criteria specified
duration ensures the same aging as in test condition
in 7.4.
A.
Length of the cable on each side of the connector
inside the chamber: 1,5 m minimum
Test wavelengths:
1 310 nm ± 20 nm and 1 550 nm
Sampling rate: initially at room ambient, at least
± 20 nm
every 6 h during the test and at the end of the test at
room ambient.
NOTE Attenuation and return
loss decrease is the difference
Preconditioning procedure: before test, specimens
between any measurement and
shall be maintained in room temperature condition for
the initial measurement made at
2 h. Clean plug and adapter according to
room temperature, and applies
manufacturer’s instructions.
to all measurements. Maximum
and mean attenuation and return Recovery procedure: after test, specimens shall be
loss criteria apply to all maintained in room temperature condition for 2 h.
measurements
The connector samples shall not be uncoupled or
cleaned at anytime before, during, or after the test.

4 Change of Attenuation: IEC 61300-2-22, Test Nb
temperature All attenuation measurements
High temperature dwell: +75 °C ± 2 °C
shall meet the criteria specified
in 7.4.
Room ambient dwell: +23°C ± 2 °C
Return loss:
Low temperature dwell: -40 °C ± 2 °C
All return loss measurements
shall meet the criteria specified
Duration at each dwell temperature: 1 h
in 7.4.
Ramp time = 1 h
Test wavelengths:
Number of cycles: 21
1 310 nm ± 20 nm and 1 550 nm
± 20 nm
Length of the cable on each side of the connector
inside the chamber: 1,5 m minimum for pigtails and
NOTE The maximum attenuation
3 m minimum for patchcords
and return loss variation is the
difference between any
Specimen shall be optically functioning.
measurement and the initial
measurement made at room Sampling rate: initially at room ambient, after 1/2 h
temperature, and applies to all during each dwell (measurements to be completed
measurements. Maximum and during dwell) and at the end of the test at room
mean attenuation and return ambient.
loss criteria apply to all
Preconditioning procedure: before test, specimens
measurements
shall be maintained in room temperature condition for
2 h.
Recovery procedure: after test, specimens shall be
maintained in room temperature condition for 2 h.

The connector samples shall not be uncoupled or

cleaned anytime before, during or after the test.

– 12 – 61753-021-6 © IEC:2007
Table 2 (continued)
No Test Requirements Details
5 Damp heat Attenuation: IEC 61300-2-19
(steady state) All attenuation measurements
Temperature: +75 °C ± 2 °C
shall meet the criteria specified
in 7.4.
Relative humidity: 90 % ± 5 %
Return loss:
Duration of exposure: 168 h
All return loss measurements
shall meet the criteria specified
Length of the cable on each side of the connector
in 7.4.
inside the chamber: 1,5 m minimum for pigtails and
3 m minimum for patchcords
Test wavelengths:
1 310 nm ± 20 nm and 1 550 nm
Specimen shall be optically functioning.
± 20 nm
Sampling rate: initially at room ambient, at least
NOTE The maximum attenuation every 6 h during the test and at the end of the test at
room ambient.
and return loss variation is the
difference between any
Preconditioning procedure: before test, specimens
measurement and the initial
shall be maintained in room temperature condition for
measurement made at room
2 h.
temperature, and applies to all
measurements. Maximum and
Recovery procedure: after test, specimens shall be
mean attenuation and return
maintained in room temperature condition for 2 h.
loss criteria apply to all
The connector samples shall not be uncoupled or
measurements
cleaned anytime before, during, or after the test.

6 Temperature- Attenuation: IEC 61300-2-48
humidity- All attenuation measurements
High temperature dwell: +65 °C ± 2 °C
condensation shall meet the criteria specified
cycling test in 7.4.
Room ambient dwell: +23 °C ± 2 °C
Return loss:
Low temperature dwell::-10 °C ± 2 °C
All return loss measurements
shall meet the criteria specified
Relative humidity: 90 % to 100 % ± 2 % during dwells
in 7.4.
at +23 °C and 65 °C. Uncontrolled but not
dehumidified during ramps and at -10 °C.
Test wavelengths:
1 310 nm ± 20 nm and 1 550 nm
Cycle profile: 23 °C to -10 °C to +65 °C to -10 °C to
± 20 nm
+23 °C.
NOTE The maximum
Ramp time = 1 h, except change from -10 °C to
attenuation and return loss
+65 °C and +65 °C to –10°C must occur faster (20
variation is the difference
min max.) to maximize condensation.
between any measurement and
Duration at each dwell temperature: 2 h
the initial measurement made at
room temperature, and applies
Number of cycles: 14
to all measurements. Maximum
and mean attenuation and return
Length of the cable on each side of the connector
loss criteria apply to all
inside the chamber: 1,5 m minimum for pigtails and
measurements
3 m minimum for patchcords
Specimen shall be optically functioning.

Sampling rate: initially at room ambient, after 1 h
during each dwell (measurements to be completed
during dwell) and at the end of the test at room
ambient.
Preconditioning procedure: before test, specimens
shall be maintained in room temperature condition for
2 h.
Recovery procedure: after test, specimens shall be
maintained in room temperature condition for 2 h.
The connector samples shall not be uncoupled or
cleaned anytime before, during, or after the test.

61753-021-6 © IEC:2007 – 13 –
Table 2 (continued)
No Test Requirements Details
7 Dry heat Attenuation: IEC 61300-2-18
No requirement
Temperature:+75 °C ± 2 °C
Return loss:
Duration of exposure: 24 h
No requirement
Length of the cable on each side of the connector
The connector samples shall not
inside the chamber: 1,5 m minimum for pigtails and
be uncoupled or cleaned
3 m minimum for patchcords
anytime before, during, or after
the test.
Preconditioning procedure:
before test, specimens shall be maintained in room
NOTE This test is to dry the
temperature condition for 2 h.
connector after humidity-
condensation test.
Recovery procedure:
after test, specimens shall be maintained in room
temperature condition for 2 h.
8 Change of Attenuation: IEC 61300-2-22, Test Nb
temperature All attenuation measurements
High temperature dwell: +75 °C ± 2 °C
shall meet the criteria specified
in 7.4.
Room ambient dwell: +23 °C ± 2 °C
Return loss:
Low temperature dwell: -40 °C ± 2 °C
All return loss measurements
shall meet the criteria specified
Duration at each dwell temperature:1 h
in 7.4.
Ramp time = 1 h
Test wavelengths:
Number of cycles: 21
1 310 nm ± 20 nm and 1 550 nm
± 20 nm
Length of the cable on each side of the connector
inside the chamber: 1,5 m minimum for pigtails and
NOTE The maximum attenuation
3 m minimum for patchcords
and return loss variation is the
difference between any
Specimen shall be optically functioning.
measurement and the initial
measurement made at room Sampling rate: initially at room ambient, after ½ h
temperature, and applies to all during each dwell (measurements to be completed
measurements. Maximum and during dwell) and at the end of the test at room
ambient.
mean attenuation and return
loss criteria apply to all
Preconditioning procedure: before test, specimens
measurements
shall be maintained in room temperature condition for
2 h.
Recovery procedure: after test, specimens shall be
maintained in room temperature condition for 2 h.

The connector samples shall not be uncoupled or

cleaned anytime before, during, or after the test.
9 Vibration Attenuation: IEC 61300-2-1
(sinusoidal) All attenuation measurements
Frequency range: 45 Hz per min, 10 Hz to 55 Hz
shall meet the criteria specified

in 7.4.
Maximum frequency sweep: 2,5 min

Return loss:
Endurance duration per axis: 2 h
All return loss measurements
Number of axes: three orthogonal
shall meet the criteria specified
in 7.4.
Number of sweeps per axis: 120
Test wavelengths:
Vibration amplitude: 1,5 mm peak to peak
1 310 nm ± 20 nm and 1 550 nm
± 20 nm
Sampling rate: initially and before and after each
axis.
NOTE The maximum attenuation
and return loss variation is the
Method of mounting: an adapter shall be mounted
difference between any
rigidly to the mounting fixture
measurement and the initial
Specimen shall be optically functioning. Monitoring
measurement made at room
during test is required; transient loss is not required.
temperature, and applies to all
measurements. Maximum and
Preconditioning procedure: clean plug and adapter
mean attenuation and return
according to manufacturer’s instructions.
loss criteria apply to all
measurements
The connector samples shall not be uncoupled or
cleaned at anytime during the test.

– 14 – 61753-021-6 © IEC:2007
Table 2 (continued)
No Test Requirements Details
10 Optical fibre Attenuation: IEC 61300-2-44
cable flexing All attenuation measurements
Magnitude of the tensile load: 8,9 N for connectors
shall meet the criteria specified
with reinforced cable
in 7.4.
5,9 N for SFF connectors with reinforced cable
Return loss:
All return loss measurements
Cycle: 0 ° to +90 ° to 0 ° to -90 ° to 0 ° (continuous
shall meet the criteria specified
with reversing at ± 90 °)
in 7.4.
Number of cycles: 100
Test wavelengths:
Rate of application of the tensile load: 1 N/s for
1 310 nm ± 20 nm and 1 550 nm
reinforced cable
± 20 nm
Point of application of tensile load: 220 mm - 280 mm
NOTE This test does not apply
from cable entrance to plug
to connectors without reinforced
cable.
Sampling rate: initially and at the end of the test with
no load applied.
Method of mounting: an adapter shall be mounted

rigidly to the test fixture.
Preconditioning procedure: clean plug and adapter
according to manufacturer’s instructions.
The connector samples shall not be uncoupled or
cleaned at anytime during the test.
11 Torsion/twist Attenuation: IEC 61300-2-5
All attenuation measurements
Magnitude of the tensile load:
shall meet the criteria specified
in 7.4.
Reinforced jacketed cables:
Load: 13,3 N
Return loss:
All return loss measurements
Cycle: ± 900 ° (± 2,5 revolutions)
shall meet the criteria specified
in 7.4. Number of cycles: 10
(cycle rate not specified)
Test wavelengths:
1 310 nm ± 20 nm and 1 550 nm 900-micron buffered fibres:
± 20 nm
Load: 7,4 N
Cycle: ± 540 ° (± 1,5 revolutions)

Number of cycles: 10
(cycle rate not specified)
250-micron coated fibres:
Load: 4,9 N
Cycle: ± 540 ° (± 1,5 revolutions)
Number of cycles: 10
(cycle rate not specified)
Rate of application of the tensile load: 1 N/s for
reinforced cable
0,1 N/s for buffered or coated fibre
Point of application of tensile load: 220 mm - 280 mm
from cable entrance to plug
Sampling rate: initially and at the end of the test with
no load applied.
Method of mounting: an adapter shall be mounted
rigidly to the test fixture.
Preconditioning procedure: Clean the mechanical and
optical alignment parts of the specimen according to
the manufacturer's instructions.
The connector samples shall not be uncoupled or
cleaned at any time during the test.

61753-021-6 © IEC:2007 – 15 –
Table 2 (continued)
No Test Requirements Details
12 0° Proof Attenuation: IEC 61300-2-50
All attenuation measurements
Magnitude of the tensile load:
shall meet the criteria specified
in 7.4.
44,5 N for reinforced cables
Return loss:
Rate of application of the tensile load: 5 N/s for
All return loss measurements
reinforced cables
shall meet the criteria specified
in 7.4. Point of application of tensile load: 220 mm – 280 mm
from cable entrance to plug
Test wavelengths:
Duration of the test (maintaining the load): 5 s
1 310 nm ± 20 nm and 1 550 nm
minimum
± 20 nm
Sampling rate: initially and at least 10 s after the end
NOTE This test does not apply
of the test with no load applied.
to connectors without reinforced
cable.
Method of mounting: an adapter shall be mounted
rigidly to the test fixture.
Specimen does not need to be optically functioning

during the test.
Preconditioning procedure: clean plug and adapter
according to manufacturer’s instructions.
The connector samples shall not be uncoupled or
cleaned at anytime during the test.
13 90° proof Attenuation: IEC 61300-2-50
All attenuation measurements Magnitude of the tensile load:
shall meet the criteria specified 22,6 N for connectors with reinforced cable
in 7.4. 14,7 N for SFF connectors with reinforced cable
Return loss: Rate of application of the tensile load: 5 N/s for
reinforced cables
All return loss measurements
shall meet the criteria specified Point of application of tensile load: 220 mm – 280 mm
in 7.4. from cable entrance to plug
Test wavelengths: Duration of the test (maintaining the load): 5 s
minimum
1 310 nm ± 20 nm and 1 550 nm
± 20 nm
Sampling rate: initially and at least 10 s after the end
of the test with no load applied.
NOTE This test does not apply
to connectors without reinforced
Method of mounting: an adapter shall be mounted
cable.
rigidly to the test fixture.
Specimen does not need to be optically functioning
during the test.
Preconditioning procedure: clean plug and adapter
according to manufacturer’s instructions.
The connector samples shall not be uncoupled or
cleaned at anytime during the test.

– 16 – 61753-021-6 © IEC:2007
Table 2 (continued)
No Test Requirements Details
14 Transmission Attenuation: IEC 61300-2-51
with applied All attenuation measurements
Orientation: 0 ° and 90 ° to the axis of the connector
tensile load shall meet the criteria specified
in 7.4.
Magnitude of the tensile load:
2,5 N, 6,9 N, 14,7 N, and 19,6 N for reinforced
Return loss:
jacketed cables
All return loss measurements
2,5 N and 6,9 N for 900-micron buffered fibres
shall meet the criteria specified
2,5 N and 4,9 N for 250-micron coated fibres
in 7.4.
SFF load exception: For small form factor (SFF)
Test wavelengths:
connectors, the 90 ° loads are reduced to 2/3 of the
1 310 nm ± 20 nm and 1 550 nm
values listed above.
± 20 nm
Rate of application of the tensile load:
NOTE The maximum attenuation
5 N/s for reinforced cables
and return loss variation is the
No requirement for 900 µ or 250 µ coated fibres
difference between any
measurement and the initial
measurement made at room
Point of application of tensile load: 220 mm - 280 mm
temperature, and applies to all
from cable entrance to plug
measurements. Maximum and
mean attenuation and return
Duration of the test (maintaining the load): Until
loss criteria apply to all
optical stability is reached
measurements
Sampling rate: initially, at optical stability with the

load applied and at the completion of all tests 20 s
after the last load is removed.

Method of mounting: an adapter shall be mounted
rigidly to the test fixture.
Specimen shall be optically functioning.
Preconditioning procedure: clean plug and adapter
according to manufacturer’s instructions.
The connector samples shall not be uncoupled or
cleaned at anytime during the test.
15 Impact Attenuation: IEC 61300-2-12 Method A
All attenuation measurements
Number of drops: 8 for each plug
shall meet the criteria specified
in 7.4.
Drop height: 1,5 m
Return loss:
Sampling rate: Initially and after the last drop.
All return loss measurements
Specimen shall be unmated during drop cycles.
shall meet the criteria specified
in 7.4.
Preconditioning procedure: clean plug and adapter
Test wavelengths: according to manufacturer’s instructions. Place a dust
cap over the ferrule to protect the fibre endface.
1 310 nm ± 20 nm and 1 550 nm
± 20 nm
Recovery procedure: the connector may be cleaned
after each drop before measurement.

61753-021-6 © IEC:2007 – 17 –
Table 2 (continued)
No Test Requirements Details
16 Mating 100% of the measurements shall IEC 61300-2-2
durability meet the attenuation and return
NOTE This test follows the procedure of 61300-2-2.
loss criteria after the last cycle
However, the requirements have been modified for
(up to 2 additional
category O.
cleaning/mating cycles are
allowed).
Coupling mechanism to be cycled: plug-adapter
90% of the measurements must
Cycling rate: not less than 3 s between each
meet the attenuation and return
engagement and separation
loss criteria after the 1-sided &
Cycling method: the test is to be conducted manually
2-sided cleanings.
with the operator standing on the floor for all
Attenuation:
cleanings and reconnections to simulate operating
All attenuation measurements
conditions.
shall meet the criteria specified
Number of cycles: 200 minimum
in 7.4.
Sampling rate: initially and after each cleaning
Return loss:
All return loss measurements (cycles 1, 25, 50, 75, 100, 125, 150, 175 and 200).
shall meet the criteria specified Measurements may also be made at cycles 201 and
in 7.4. 202 if cleaning is attempted to improve performance.
Method of mounting: an adapter shall be mounted
...