Bsi bs en 50411 3 2 2011
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BS EN 50411-3-2:2011
BSI Standards Publication
Fibre organisers and closures
to be used in optical fibre
communication systems —
Product specifications
Part 3-2: Singlemode mechanical fibre splice
BS EN 50411-3-2:2011
BRITISH STANDARD
National foreword
This British Standard is the UK implementation of
EN 50411-3-2:2011.
The UK participation in its preparation was entrusted to Technical
Committee GEL/86/2, Fibre optic interconnecting devices and passive
components.
A list of organizations represented on this committee can be
obtained on request to its secretary.
This publication does not purport to include all the necessary
provisions of a contract. Users are responsible for its correct
application.
© BSI 2011
ISBN 978 0 580 66526 4
ICS 33.180.20
Compliance with a British Standard cannot confer immunity from
legal obligations.
This British Standard was published under the authority of the
Standards Policy and Strategy Committee on 30 April 2011.
Amendments issued since publication
Date
Text affected
BS EN 50411-3-2:2011
EUROPEAN STANDARD
EN 50411-3-2
NORME EUROPÉENNE
March 2011
EUROPÄISCHE NORM
ICS 33.180.20
English version
Fibre organisers and closures to be used in optical fibre communication
systems Product specifications Part 3-2: Singlemode mechanical fibre splice
Organiseurs et btiers de fibres destinés
à être utilisés dans les systèmes de
communication par fibres optiques Spécifications de produit Partie 3-2: Epissures mécaniques de
fibres unimodales
LWL-Spleißkassetten und -Muffen für die
Anwendung in LWL
Kommunikationssystemen Produktnorm Teil 3-2: Mechanische Spleiße für
Einmodenfasern
This European Standard was approved by CENELEC on 2011-01-02. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2011 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50411-3-2:2011 E
BS EN 50411-3-2:2011
EN 50411-3-2:2011
–2–
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 86BXA, Fibre optic
interconnect, passive and connectorised components.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50411-3-2 on
2011-01-02.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights.
The following dates were fixed:
–
–
latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop)
2012-01-02
latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2014-01-02
__________
BS EN 50411-3-2:2011
–3–
EN 50411-3-2:2011
Fibre organisers and closures to be used in optical fibre communication systems –
Product specifications
Part 3-2: Singlemode mechanical fibre splice
Description
Type:
Fibre splice
Style:
Mechanical
Operating wavelength:
1 260 nm to 1 625 nm
Performance
Application:
EN 61753-1:2007, Category U
with extension of lower
temperature to - 40 °C
Attenuation grades
Grade B:
≤ 0,25 dB maximum (97 %)
Grade C:
≤ 0,50 dB maximum (97 %)
Fibre category
EN 60793-2-50
Types B1.1 and B1.3
Grade 1: ≥ 60 dB
Return loss grades
Grade 2: ≥ 45 dB
Grade 3: ≥ 35 dB
Related documents:
EN 60793-2-50
Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres (IEC 60793-2-50)
EN 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 60794-2-50)
EN 61300 series
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures (IEC 61300 series)
EN 61753-1:2007
Fibre optic interconnecting devices and passive components performance
standard – Part 1: General and guidance for performance standards
(IEC 61753-1:2007)
Outline and maximum dimensions:
L
H
W
Variant
Dimension
W
mm
Dimension
H
mm
Dimension
L
mm
Type M1
3,8
6,4
38
Type M2
4,0
4,0
36
Type M3
3,2
3,2
45
Type M4
4,2
4,2
44
Type M5
4,0
4,0
40
Type M6
Ø 5,0
65
BS EN 50411-3-2:2011
EN 50411-3-2:2011
–4–
Contents
1
Scope ....................................................................................................................................... 5
2
1.1 Product definition ............................................................................................................. 5
1.2 Interoperability ................................................................................................................. 5
1.3 Expected performance ..................................................................................................... 5
1.4 Operating environment ..................................................................................................... 5
1.5 Reliability ......................................................................................................................... 5
1.6 Quality assurance ............................................................................................................ 5
Normative references .............................................................................................................. 6
3
Description .............................................................................................................................. 6
4
3.1 General ............................................................................................................................ 6
3.2 Mechanical splice ............................................................................................................. 7
3.3 Materials .......................................................................................................................... 7
3.4 Dimensions ...................................................................................................................... 7
3.5 Colour and marking .......................................................................................................... 7
Variants ................................................................................................................................... 8
5
Dimensional requirements ...................................................................................................... 9
6
Tests ........................................................................................................................................ 9
7
6.1
6.2
6.3
6.4
Test
8
Performance requirements .................................................................................................... 10
8.1
8.2
8.3
Annex A
Introduction ...................................................................................................................... 9
Test sample preparation ................................................................................................... 9
Test and measurement methods .................................................................................... 10
Pass/fail criteria ............................................................................................................. 10
report ............................................................................................................................. 10
Dimensional and marking requirements .......................................................................... 10
Installation yield requirement .......................................................................................... 10
Optical performance requirements .................................................................................. 11
(normative) Fibre type ................................................................................................... 17
Annex B (normative) Sample size and product sourcing requirements ..................................... 18
Bibliography ................................................................................................................................ 19
Figures
Figure 1 – Outline and maximum dimensions ................................................................................... 9
Tables
Table 1 – Optical fibre mechanical splice, for category U – variants .................................................. 8
Table 2 – Test details and requirements......................................................................................... 11
Table A.1 – Fibre type characteristics ............................................................................................ 17
Table B.1 – Sample size per test .................................................................................................... 18
BS EN 50411-3-2:2011
–5–
1
1.1
EN 50411-3-2:2011
Scope
Product definition
This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental
performance requirements, which a singlemode mechanical splice shall meet in order for it to be categorised
as an EN standard product.
Since different variants and grades of performance are permitted, product marking and identification details
are given in 3.5.
Although in this document the product is qualified for EN 60793-2-50 types B1.1 and B1.3 singlemode fibres,
it may also be suitable for other fibre types.
1.2
Interoperability
The installed mechanical splice fits into a fibre management system with optical fibre splice cassettes or
splice trays. This European Standard specifies the following two physical interface dimensions:
a)
cross sectional profile with width, height or diameter (in millimetres);
b)
length (in millimetres).
1.3
Expected performance
In this document, the performance of a mechanical splice is given with identical fibres only. Losses
associated with fibre cladding diameter and mode field mismatch are not taken into account. The measured
attenuation is a function of the core concentricity, cladding non-circularity and alignment capability.
The optical return loss performance is a function of the index matching gel and the fibre end face preparation.
1.4
Operating environment
The tests selected combined with the severities and durations are representative of an outdoor enclosed
environment defined as category U in EN 61753-1. To ensure that the product can be used in closures,
boxes or street cabinet for categories A, G and S (as defined EN 61753-1) the specified lower temperature is
extended to - 40 °C and requirements for temporary flooding have been added.
1.5
Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with
this specification does not guarantee the reliability of the product. This should be predicted using a
recognised reliability assessment programme.
1.6
Quality assurance
Compliance with this specification does not guarantee the manufacturing consistency of the product. This
standard does not cover quality insurance.
BS EN 50411-3-2:2011
EN 50411-3-2:2011
2
–6–
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.
EN 60793-2-50
Optical fibres – Part 2-50: Product specifications – Sectional specification for class B
single-mode fibres (IEC 60793-2-50)
EN 61300 series
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures (IEC 61300 series)
EN 61300-2-1
Part 2-1: Tests – Vibration (sinusoidal) (IEC 61300-2-1)
EN 61300-2-4
Part 2-4: Tests – Fibre/cable retention (IEC 61300-2-4)
EN 61300-2-5
Part 2-5: Tests – Torsion/twist (IEC 61300-2-5)
EN 61300-2-7
Part 2-7: Tests – Bending moment (IEC 61300-2-7)
EN 61300-2-9
Part 2-9: Tests – Shock (IEC 61300-2-9)
EN 61300-2-17
Part 2-17: Tests – Cold (IEC 61300-2-17)
EN 61300-2-18
Part 2-18: Tests – Dry heat – High temperature endurance (IEC 61300-2-18)
EN 61300-2-22
Part 2-22: Tests – Change of temperature (IEC 61300-2-22)
EN 61300-2-26
Part 2-26: Tests – Salt mist (IEC 61300-2-26)
EN 61300-2-27
Part 2-27: Tests – Dust – Laminar flow (IEC 61300-2-27)
EN 61300-2-33
Part 2-33: Tests – Assembly and disassembly of fibre optic closures
(IEC 61300-2-33)
EN 61300-2-45
Part 2-45: Tests – Durability test by water immersion (IEC 61300-2-45)
EN 61300-2-46
Part 2-46: Tests – Damp heat cyclic (IEC 61300-2-46)
EN 61300-3-3:2009
Part 3-3: Examinations and measurements – Active monitoring of changes in
attenuation and return loss (IEC 61300-3-3:2009)
EN 61300-3-4:2001
Part 3-4: Examinations and measurements – Attenuation (IEC 61300-3-4:2001)
EN 61300-3-6:2009
Part 3-6: Examinations and measurements – Return loss (IEC 61300-3-6:2008)
EN 61300-3-7:2001
Part 3-7: Examinations and measurements – Wavelength dependence of attenuation
and return loss (IEC 61300-3-7:2000)
EN 61300-3-28:2002
Part 3-28: Examinations and measurements – Transient loss (IEC 61300-3-28:2002)
EN 61753-1:2007
Fibre optic interconnecting devices and passive components performance standard –
Part 1: General and guidance for performance standards (IEC 61753-1:2007)
3
3.1
Description
General
A singlemode mechanical fibre splice is a passive optical interconnection component which provides optical
and mechanical continuity between two optical fibres or cables. The products described in this specification
are based on mechanical alignment of two cleaved fibres. The fibres are protected against ingress of dust or
water by a sealing material, generally an index matching gel, to both minimise reflections and to improve
attenuation at the glass/gel/glass interface.
BS EN 50411-3-2:2011
–7–
EN 50411-3-2:2011
Some splices may have a limited reinstallation capability. In this case the re-installability shall be clearly
stated and the re-installation test 10 in 8.3 shall be conducted.
3.2
Mechanical splice
An optical fibre mechanical splice body contains the following pre-assembled elements:
–
an alignment device;
–
a sealing and index matching gel inside;
–
a fibre alignment activation device like a spring, wedge or plunger;
–
a fibre clamping or fixing able to withstand axial fibre loads.
Mechanical splices designed for use with cables shall contain strain relief fixing.
3.3
Materials
Materials which are not specified or which are not specifically described are left to the discretion of the
manufacturer. However, the following requirements shall be met:
–
all materials that are likely to come in contact with personnel shall meet appropriate health and safety
regulations;
–
the sealing and index matching materials shall be compatible with the materials of the fibres and the
mechanical splice parts;
–
all components of the splice shall be resistant to solvents and degreasing agents that are typically used
to clean and degrease fibres and cables;
–
metallic parts shall be resistant to the corrosive influences they may encounter during the lifetime of the
product;
–
exterior polymer materials shall be resistant to mould growth.
3.4
Dimensions
Outline dimensions are specified. All other dimensions are left to the discretion of the manufacturer.
3.5
Colour and marking
Marking of the product or packaging shall be in the following order of precedence:
a)
identification of supplier;
b)
manufacturing date code: year/week;
c)
manufacturers part number;
d)
variant identification number.
There is no preferred colour specified.
BS EN 50411-3-2:2011
EN 50411-3-2:2011
4
–8–
Variants
Table 1 – Optical fibre mechanical splice, for category U – variants
EN 50411–3–2 – XX1 – X2 – X3 – X4 – X5
Variant No. XX1
Mechanical splice type
(common profile)
M1
Mechanical splice Type 1
M2
Mechanical splice Type 2
M3
Mechanical splice Type 3
M4
Mechanical splice Type 4
M5
Mechanical splice Type 5
M6
Mechanical cable splice Type 6
Variant No. X2
Attenuation grade
B
≤ 0,25 dB maximum
C
≤ 0,50 dB maximum
Variant No. X3
Return loss grade capability
(depends on cleave/process)
1
≥ 60 dB
2
≥ 45 dB
3
≥ 35 dB
Variant No. X4 and X5
Fibre types to be spliced
P
Primary coated 125/250 µm
S
Secondary coated 125/900 µm
A
Any single fibre types P or S
R
Reinforced cable
BS EN 50411-3-2:2011
–9–
5
EN 50411-3-2:2011
Dimensional requirements
L
H
W
Variant
Description
Dimension W
± 0,1 mm
Dimension H
± 0,1 mm
Dimension L
± 1 mm
mm
mm
mm
Type M1
Mechanical Type M1
3,8
6,4
38
Type M2
Mechanical Type M2
4,0
4,0
36
Type M3
Mechanical Type M3
3,2
3,2
45
Type M4
Mechanical Type M4
4,2
4,2
44
Type M5
Mechanical Type M5
4,0
4,0
40
Type M6
Mechanical Type M6
Ø 5,0
65
Figure 1 – Outline and maximum dimensions
6
6.1
Tests
Introduction
The mechanical and environmental performance of a fibre splice is vital to an optical cabling system.
The purpose of testing is to demonstrate that a mechanical splice remains functional under defined
environmental conditions, without failures.
Optical performance testing is accomplished by subjecting the test specimen to a number of mechanical and
environmental conditions and by measuring any optical performance deviations at prescribed intervals during
and after completion of each test.
6.2
Test sample preparation
The test samples are prepared by making a mechanical splice on identical fibres. Optical test samples shall
be installed according to the manufacturers’ installation instructions. The fibres for the optical test samples
are singlemode fibres as described in Annex A. The length of the fibres shall be at least 2 m on each side of
the mechanical splice. For each fibre construction (primary coated, secondary coated or reinforced cable)
a number of test samples will be prepared as defined in Table B.1.
BS EN 50411-3-2:2011
EN 50411-3-2:2011
6.3
– 10 –
Test and measurement methods
All tests and measurement methods have been selected from EN 61300 series.
Unless otherwise stated in the individual test details, all attenuation measurements shall be performed at
(1 310 ± 25) nm, (1 550 ± 25) nm and (1 625 ± 25) nm. All specified optical losses are referenced to the initial
attenuation at the start of the test.
No deviation from the specified test method is allowed.
Unless otherwise specified, tests should be carried out under standard atmospheric conditions according to
EN 61300-1.
6.4
Pass/fail criteria
A product will have met the requirements of this European Standard provided no failures occur in any test.
In the event of a failure, the test shall be re run using a sample size double that of the original.
7
Test report
Conformance to a performance standard shall be supported by a test report. The test report shall clearly
demonstrate that the tests described in Clause 8 have been carried out in accordance with this European
Standard and shall provide full details of the tests together with a pass/fail declaration. In the case of a failure,
an analysis of the cause of the failure shall be undertaken and any corrective actions taken shall be
described.
If design changes are made, an assessment shall be carried out to determine whether full or partial
requalification shall be done.
8
8.1
Performance requirements
Dimensional and marking requirements
Dimensions and marking of the product shall be in accordance with the requirements of 3.5 and Clause 5,
and shall be measured using the appropriate EN test method.
8.2
Installation yield requirement
The success rate or yield of the installation of mechanical splices depends on many variables (e.g. installer
skills, ambient conditions, condition of tools). Typically no feedback is given on the optical performance when
a mechanical splice is made. Therefore a small percentage of the installed splices might not meet the
expected performance level.
A minimum of 97 % of the splices shall meet the maximum attenuation and minimum return loss
requirements as specified by tests 1 and 2 in Table 2 when 100 splices are made according to test 3 in 8.3.
BS EN 50411-3-2:2011
– 11 –
8.3
EN 50411-3-2:2011
Optical performance requirements
Table 2 – Test details and requirements
No.
1
Test
Attenuation
Requirement
Details
Attenuation per splice:
Method:
EN 61300-3-4
Grade B:
≤ 0,25 dB max.
Launch fibre length:
≥ 2 m. Only the fundamental
mode shall propagate at the
mechanical splice and at the
detector.
Source type:
LD
Launch conditions:
The wavelength of the source
shall be longer than cut-off
wavelength of the fibre.
System stability:
Better than ± 0,05 dB over the
measuring period or at least 1 h
Detector linearity:
± 0,05 dB over the dynamic
range to be measured
LD source central
wavelengths:
(1 310 ± 25) nm,
(1 550 ± 25) nm and
(1 625 ± 25) nm
Return loss per splice:
Method:
EN 61300-3-6:2009, method 1
Grade 1:
≥ 60 dB
Launch fibre length:
≥ 2 m. Only the fundamental
mode shall propagate at the
mechanical splice and at the
detector.
Source type:
LD
Launch conditions:
The wavelength of the source
shall be longer than cut-off
wavelength of the fibre.
System stability:
Better than ± 0,05 dB over the
measuring period or at least 1 h
Detector linearity:
± 0,05 dB over the dynamic
range to be measured
LD source central
wavelengths:
(1 310 ± 25) nm,
(1 550 ± 25) nm and
(1 625 ± 25) nm
Method:
EN 61300-3-4:2001, insertion
method
EN 61300-3-6:2009, method 1
Launch fibre length:
≥ 2 m. Only the fundamental
mode shall propagate at the
mechanical splice and at the
detector.
Source type:
LD
Launch conditions:
The wavelength of the source
shall be longer than cut-off
wavelength of the fibre.
System stability:
Better than ± 0,05 dB over the
measuring period or at least 1 h
Detector linearity:
± 0,05 dB over the dynamic
range to be measured
LD source central
wavelengths:
(1 310 ± 25) nm,
(1 550 ± 25) nm and
(1 625 ± 25) nm
Grade C:
≤ 0,50 dB max.
2
Return loss
Grade 2:
≥ 45 dB
Grade 3:
≥ 35 dB
3
Splicing yield
100 splices will be made.
A minimum of 97 % shall
meet the maximum
attenuation requirement of
test 1.
A minimum of 97 % shall
meet the return loss
requirement of test 2.
BS EN 50411-3-2:2011
EN 50411-3-2:2011
– 12 –
Table 2 – Test details and requirements (continued)
No.
4
Test
Wavelength
dependence of
attenuation
Requirement
Attenuation per splice:
Vibration
(sinusoidal)
Method:
EN 61300-3-7:2001, test
sample configuration according
to EN 61300-3-4:2001, cut-back
method or insertion method
Launch fibre length:
≥ 2 m. Only the fundamental
mode shall propagate at the
mechanical splice and at the
detector.
Source type:
Unpolarised broadband light
source with spectral power
≥ 35 dBm/nm
Launch conditions:
The wavelength of the source
shall be longer than cut-off
wavelength of the fibre.
System stability:
Better than ± 0,05 dB over the
measuring period or at least 1 h
Wavelength range:
1 260 nm to 1 625 nm
Spectral width:
2 nm
Detector linearity:
± 0,05 dB over the dynamic
range to be measured
Grade B:
≤ 0,25 dB maximum
Grade C:
≤ 0,50 dB maximum
5
Details
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Method:
EN 61300-2-1
Frequency range:
10 Hz to 55 Hz
Constant vibration
amplitude:
0,75 mm
During the test the change
in attenuation shall be
≤ ± 0,2 dB.
Number of cycles
(10 Hz - 55 Hz - 10 Hz):
15
Number of axis:
The three main axes, perpendicular one to each other
Duration per axis:
0,5 h
Measurements required:
Attenuation and return loss
shall be measured before and
after the test.
During the test the change in
attenuation shall be measured
by transient loss test method
EN 61300-3-28:2002 at
(1 550 ± 25) nm.
6
Shock
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Method:
EN 61300-2-9
Acceleration force:
500 gn
Duration shock:
1 ms half sine pulse
Number of axes:
3 main axes, perpendicular to
each other
Number of shocks:
2 per axis (each in different
direction)
Measurements required:
Before and after each axis
BS EN 50411-3-2:2011
– 13 –
EN 50411-3-2:2011
Table 2 – Test details and requirements (continued)
No.
7
8
Test
Torsion
Fibre/cable
retention
Requirement
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Details
Method:
EN 61300-2-5
Magnitude of the load:
(2,0 ± 0,5) N for primary and
secondary coated fibres
(15 ± 1) N at 1 N/s for aramid
yarn reinforced cables
Rate of load application:
0,1 N/s
Load application point:
0,2 m from end of device
Number of cycles:
10 cycles at ± 180°
Measurements required:
Attenuation and return loss
shall be measured before and
after the test.
Method:
EN 61300-2-4
Load:
(5,0 ± 0,5) N for secondary
coated fibres
(2,0 ± 0,5) N for primary coated
fibres
(70 ± 2) N for aramid yarn
reinforced cables with diameter
≤ 2 mm
(100 ± 2) N for aramid yarn
reinforced cables with diameter
> 2 mm
Application point:
0,3 m from the end of device
Load rate:
0,5 N/s for primary and
secondary coated fibre
5 N/s for aramid yarn reinforced
cables
9
10
Bending
moment
Assembly and
disassembly of
splices
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Only for re-installable
mechanical splices.
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Duration:
60 s
Measurements required:
Attenuation and return loss
shall be measured before and
after the test.
Method
EN 61300-2-7
Load:
(2,0 ± 0,1) N
Duration:
10 s
Measurements required:
Attenuation and return loss
shall be measured before and
after the test.
Method:
EN 61300-2-33
Conditioning between each
installation:
After each re-installation of the
mechanical splice the splice
shall be aged by 1 temperature
cycle (- 40 °C to + 70 °C) as
specified in test 14.
Number of re-installations:
4
Measurements required:
Attenuation and return loss
shall be measured before, after
each ageing cycle and after the
test.
BS EN 50411-3-2:2011
EN 50411-3-2:2011
– 14 –
Table 2 – Test details and requirements (continued)
No.
11
Test
Cold
Requirement
During the test the
maximum allowed change
in attenuation is ≤ ± 0,2 dB.
During the test the return
loss requirement of test 2
shall be met.
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Details
Method:
EN 61300-2-17
Pre-conditioning procedure:
Standard atmospheric
conditions for 2 h
Temperature:
(- 40 ± 2) °C
Duration of the exposure:
96 h
Operating wavelength:
(1 310 ± 25) nm,
(1 550 ± 25) nm and
(1 625 ± 25) nm
Measurements required:
Attenuation and return loss
shall be measured before, and
after the test.
During the test the change in
attenuation and return loss shall
be measured by test method
EN 61300-3-3:2009.
12
Dry heat
During the test the
maximum allowed change
in attenuation is ≤ ± 0,2 dB.
During the test the return
loss requirement of test 2
shall be met.
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Maximum sampling interval
during the test:
1h
Recovery procedure:
Allow specimen to recover at
room temperature for 2 h.
Method:
EN 61300-2-18
Pre-conditioning procedure:
Standard atmospheric
conditions for 2 h
Temperature:
(+ 70 ± 2) °C
Duration of the exposure:
96 h
Operating wavelength:
(1 310 ± 25) nm,
(1 550 ± 25) nm and
(1 625 ± 25) nm
Measurements required:
Attenuation and return loss
shall be measured before and
after the test.
During the test the change in
attenuation and return loss shall
be measured by test method
EN 61300-3-3:2009.
Maximum sampling interval
during the test:
1h
Recovery procedure:
Allow specimen to return to
room temperature for 2 h.
BS EN 50411-3-2:2011
– 15 –
EN 50411-3-2:2011
Table 2 – Test details and requirements (continued)
No.
13
Test
Damp heat,
cyclic
Requirement
During the test the
maximum allowed change
in attenuation is ≤ ± 0,2 dB.
During the test the return
loss requirement of test 2
shall be met.
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Details
Method:
EN 61300-2-46
Pre-conditioning procedure:
Standard atmospheric
conditions for 2 h
High temperature:
(+ 55 ± 2) °C
Low temperature:
(+ 25 ± 2) °C
Relative humidity:
(93 ± 2) %
Number of cycles:
4
Duration of each cycle:
24 h
Wavelength:
(1 310 ± 25) nm,
(1 550 ± 25) nm and
(1 625 ± 25) nm
Measurements required:
Attenuation and return loss
shall be measured before and
after the test.
During the test the change in
attenuation and return loss shall
be measured by test method
EN 61300-3-3:2009.
14
Change of
temperature
During the test the
maximum allowed change
in attenuation is ≤ ± 0,2 dB.
During the test the return
loss requirement of test 2
shall be met.
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Maximum sampling interval
during the test:
15 min
Recovery procedure:
Allow specimen to return to
room temperature for 2 h.
Method:
EN 61300-2-22 (Test Nb)
Pre-conditioning procedure:
Standard atmospheric
conditions for 2 h.
High temperature:
(+ 70 ± 2) °C
Low temperature:
(- 40 ± 2) °C
Number of cycles:
12
Rate of temperature change:
1 °C/min
Duration at extreme
temperatures:
1h
Wavelength:
(1 310 ± 25) nm,
(1 550 ± 25) nm and
(1 625 ± 25) nm
Measurements required:
Attenuation and return loss
shall be measured before and
after the test.
During the test the change in
attenuation and return loss shall
be measured by test method
EN 61300-3-3:2009.
Maximum sampling interval
during the test:
15 min
Recovery procedure:
Allow specimen to return to
room temperature for 2 h.
BS EN 50411-3-2:2011
EN 50411-3-2:2011
– 16 –
Table 2 – Test details and requirements (continued)
No.
15
16
17
Test
Dust – Laminar
flow
Salt mist
Durability by
water immersion
Requirement
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Details
Method:
EN 61300-2-27
Preconditioning procedure:
2 h at normal ambient
conditions
Temperature:
(+ 35 ± 2) °C
Relative humidity:
(60 ± 2) %
Dust type:
Talc
Dust particle diameter:
< 150 µm
Dust concentration:
(25 ± 5) g/m
Test duration:
10 min
Measurements required:
Before and after the test, at
standard atmospheric
conditions
Recovery procedure:
Allow specimen to return to
room temperature for 2 h.
3
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
Method:
EN 61300-2-26
Preconditioning procedure:
2 h at normal ambient
conditions
Temperature:
(+ 35 ± 2) °C
No significant difference in
visual aspect shall be
noticed.
Salt solution (NaCl)
concentration:
(5 ± 1) %
pH:
Between 6,5 and 7,2
Test duration:
96 h
Measurements required:
Before and after the test,
at standard atmospheric
conditions
Recovery procedure:
Allow specimen to return to
room temperature for 2 h.
Method:
EN 61300-2-45
Preconditioning procedure:
2 h at normal ambient
conditions
Temperature:
(+ 45 ± 2) °C
Test duration:
1 cycle of 7 days
Measurements required:
Before and after the test,
at standard atmospheric
conditions
Recovery procedure:
Allow specimen to return to
room temperature for 2 h.
During the test the
maximum allowed change
in attenuation is ≤ ± 0,2 dB.
During the test the return
loss requirement of test 2
shall be met.
Before and after the test
the attenuation and return
loss shall meet the
requirements of tests 1
and 2.
BS EN 50411-3-2:2011
– 17 –
EN 50411-3-2:2011
Annex A
(normative)
Fibre type
Table A.1 – Fibre type characteristics
Fibre type:
Dispersion unshifted – EN 60793-2-50 Types B1.1 and B1.3
Proof stress strain:
≥1%
Mode field diameter at 1 310 nm:
(9,3 ± 0,7) µm
Mode field diameter at 1 550 nm:
(10,5 ± 1,0) µm
Core concentricity error:
≤ 0,8 µm
Cabled fibre cut off wavelength:
≤ 1 260 nm
1 550 nm loss performance:
< 0,5 dB for 100 turns on 60 mm mandrel diameter
Cladding diameter:
(125 ± 1) µm
Non coloured primary coating
diameter:
(245 ± 10) µm
Coloured primary coating diameter:
(250 ± 15) µm
Secondary coating diameter:
(900 ± 90) µm
BS EN 50411-3-2:2011
EN 50411-3-2:2011
– 18 –
Annex B
(normative)
Sample size and product sourcing requirements
Table B.1 – Sample size per test
No.
Test
Sample size
Sourcing
1
Attenuation
-
2
Return loss
-
3
Installation, yield
4
100
New
Wavelength dependence of attenuation
5
3
5
Vibration (sinusoidal)
5
3
6
Shock
5
3
7
Torsion
5
3
8
Fibre retention
5
3
9
Bending moment
5
3
10
Assembly and disassembly (optional)
5
3
11
Cold
5
3
12
Dry heat
5
3
13
Damp heat, cyclic
5
3
14
Change of temperature
5
3
15
Dust – Laminar flow
5
3
16
Salt mist
5
3
17
Water immersion
5
3
Tests 4 to 17 may be performed in any order.
