BS EN 4641-100:2015 BSI Standards Publication Aerospace series — Cables, optical 125 µm diameter cladding Part 100: Tight structure 62,5/125 µm core GI fibre 1,8 mm outside diameter — Product standard BS EN 4641-100:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 4641-100:2015 The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology 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 © The British Standards Institution 2015 Published by BSI Standards Limited 2015 ISBN 978 580 86117 ICS 49.090 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 September 2015 Amendments/corrigenda issued since publication Date Text affected BS EN 4641-100:2015 EN 4641-100 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM September 2015 ICS 49.090 English Version Aerospace series - Cables, optical 125 µm diameter cladding - Part 100: Tight structure 62,5/125 µm core GI fibre 1,8 mm outside diameter - Product standard Série aérospatiale - Câble, optique, diamètre extérieur de la gaine optique 125 µm - Partie 100 : Câble structure serrée fibre gradient d'indice cœur 62,5/125 µm, diamètre extérieur 1,8 mm - Norme de produit Luft- und Raumfahrt - Lichtwellenleiterkabel, Manteldurchmesser 125 µm - Teil 100: Festaderaufbau GI 62,5/125 µm Faser Kabeldurchmesser 1,8 mm Produktnorm This European Standard was approved by CEN on 21 June 2014 CEN 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 CEN-CENELEC Management Centre or to any CEN 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 CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref No EN 4641-100:2015 E BS EN 4641-100:2015 EN 4641-100:2015 (E) Contents Page European foreword Scope Normative references Terms and definitions Required characteristics 5 Cable construction Materials Test methods and performances in accordance with EN 3745-100 Quality assurance 13 Designation, marking and colours 13 10 Delivery conditions 14 11 Storage 14 Bibliography 15 BS EN 4641-100:2015 EN 4641-100:2015 (E) European foreword This document (EN 4641-100:2015) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN) After enquiries and votes carried out in accordance with the rules of this Association, this European Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2016, and conflicting national standards shall be withdrawn at the latest by March 2016 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom BS EN 4641-100:2015 EN 4641-100:2015 (E) Scope This European Standard specifies the general characteristics, conditions for qualification, acceptance and quality assurance for fibre optic cable: 4641-100 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies EN 2424, Aerospace series — Marking of aerospace products EN 2812, Aerospace series — Stripping of electric cables EN 3745 (all parts), Aerospace series — Fibres and cables, optical, aircraft use — Test methods EN 3838, Aerospace series — Requirements and tests on user-applied markings on aircraft electrical cables EN 3909, Aerospace series — Test fluids and test methods for electric components and sub-assemblies EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace standard parts TR 6058, Aerospace series — Cable code identification list 1) TIA/EIA-455-30-B, FOTP-30 Frequency Domain Measurement of Multimode 2) TIA/EIA-455-175-B, FOTP175 — Chromatic Dispersion Measurement of Single-mode Optical Fibers by the Differential Phase Shift Method 2) ANSI/EIA 4920000-A, Generic Specification for Optical Waveguide Fibers 2) 1) Published as ASD-STAN Technical Report at the date of publication of this European Standard http://www.asd-stan.org/ 2) Published by: National (US) American National Standard Institute http://www.ansi.org/ BS EN 4641-100:2015 EN 4641-100:2015 (E) Terms and definitions For the purposes of this document, the terms and definitions given in EN 3745-100 apply Required characteristics The characteristics of the cables, tested according to the methods described hereafter shall comply with the values defined in this product standard Cable construction See Figure and Table Key Core Optical cladding Primary coating Primary jacket Mechanical strength braid Outer jacket Figure Table Property Value Mass ≤ g/m Operating temperature Minimum bend radius (20 °C) Tensile strength -55 °C to 125 °C Installation: 20 mm (10 × outside diameter) Long term: 20 mm (10 × outside diameter) Storage: 40 mm (20 × cable outside diameter) > 200 N Materials See Table BS EN 4641-100:2015 EN 4641-100:2015 (E) Table Element Fibre Primary coating Material Core Silica Cladding Silicone Primary jacket Halogen free high temperature copolymer Mechanical strength reinforcement Polymer aromatic braid Outer jacket High temperature copolymer Test methods and performances in accordance with EN 3745-100 7.1 Optical fibre tests See Table Test method EN 3745- Table — Optical fibre test methods Designation of the test 201 Fibre visual examination 202 Fibre dimension cladding diameter 202 Fibre core dimensions 202 Fibre dimension core non circularity 202 Fibre dimension concentricity error 202 301 Method A 302 303 Fibre dimension cladding non circularity Fibre attenuation Numerical aperture Bandwidth Test conditions and results The coating shall be continuous and free of visible defects such as lumps, abrasions, cracks, splits or blisters Core diameter: (62,5 ± 3) µm Cladding diameter: (125 ± 2) µm Method A or B Sample should be in accordance with test methods Number of sample: Core non circularity: ≤ % (3 µm) Number of sample: Cladding non circularity: ≤ % (2,5 µm) Number of sample: Concentricity error: ≤ µm Number of sample: ≤ dB/km at 850 nm (20 °C) ≤ dB/km at 300 nm (20 °C) 0,275 ± 0,015 Bandwidth ≥ 160 MHz.km at 850 nm Bandwidth ≥ 500 MHz.km at 300 nm Number of sample: Minimal length of the sample: km 501 Optical fibre proof test Central wavelengths: 850 nm / 300 nm ± 10 nm Spectral width (− dB): ≤ 10 nm for 850 nm and 300 nm >1% BS EN 4641-100:2015 EN 4641-100:2015 (E) 7.2 Fibre optic cable See Table Test method EN 3745- Table — Fibre optic cable test methods (1 of 6) Designation of the test 201 Visual Inspection 203 Primary coating outside diameter 203 Outer jacket outside diameter 203 203 205 Buffer diameter Outer jacket wall thickness Cable longitudinal dimensional stability Test conditions and results The outer jacket shall have the correct identification as specified in this European Standard The coating shall be continuous and free of visible defects such as lumps, abrasions, cracks, splits or blisters Sample length: (100 ± 0,05) m (400 ± 25) µm (900 ± 25) µm (1,8 ± 0,1) mm (0,35 ± 0,07) mm The change in longitudinal dimensions between core/cladding and primary jacket and core/cladding and outer jacket shall not exceed the maximum value of 200 µm Number of samples: in total, for each length Length of the samples: m, (20 ± 0,01) m Visual examination in accordance with EN 3745-201 Maximum attenuation at -55 °C and 125 °C 301 Method C Cable attenuation α ≤ 0,7 dB at 850 nm and 300 nm Number of sample: Length of the sample: (20 ± 0,01) m Central wavelengths: 850 nm and 300 nm Rate of change to reach test temperature: 10 °C per minute 301 Method A 301 Method A Cable optical discontinuity Attenuation h stabilization at -55 °C/125 °C before performing test Signal discontinuity ≤ 0,2 dB/point Number of sample: Maximum attenuation at 20 °C α ≤ dB/km at 850 nm, α ≤ dB/km at 300 nm Central wavelengths: 850 nm and 300 nm Number of sample: Length of the sample: 250 m minimum BS EN 4641-100:2015 EN 4641-100:2015 (E) Test method EN 3745- Table — Fibre optic cable test methods (2 of 6) Designation of the test Test conditions and results Level of optical power ≤ − 50 dBm Diameter of the sphere integration: (10 ± 0,1) cm 305 Immunity to ambient light coupling Length of the sample in the light proof element: (1 ± 0,01) m Spectral characteristics or colour temperature of the light source: solar spectrum Continuous spectrum between 250 nm and 600 nm Light temperature: 000 K Light intensity: 86 400 lx Minimum authorized long term bend radius: (20 ± 0,1) mm Visual examination in accordance with EN 3745-201 306 Variation of attenuation during temperature cycling Maximum permitted variation of attenuation: α ≤ 0,7 dB at 850 nm and 300 nm Number of samples: Length of the sample: (20 ± 0,01) m Temperature cycling (see EN 3745-402) Number of cycles: Visual examination in accordance with EN 3745-201 – Maximum variation in attenuation: ≤ 0,5 dB – Maximum variation in attenuation after 24 h: ≤ 0,3 dB 401 Cable accelerated ageing Residual maximum variation in attenuation: ≤ 0,2 dB Number of samples: Length of the sample: (100 ± 0,05) m Diameter of the mandrel: 250 mm Number of temperature cycles: Test is carried out at the temperature of 125 °C High temperature: 125 °C 402 Temperature cycling Low temperature: -55 °C Duration at extreme temperatures: 30 Number of cycles: Rate of change: °C/min Visual examination in accordance with EN 3745-201 Maximum permissible variation in attenuation during test sequence and after 24 h – ∆α ≤ 0,7 dB 404 Thermal shock The maximum displacement of the fibre value shall be ≤ 200 µm relative to the outer jacket Number of samples: Length of the sample: (20 ± 0,01) m Number of temperature cycles: Test is carried out at -55 °C and 125 °C BS EN 4641-100:2015 EN 4641-100:2015 (E) Table — Fibre optic cable test methods (3 of 6) Test method EN 3745- Designation of the test Test conditions and results Maximum permissible variation in attenuation after 24 h ∆α ≤ 0,2 dB Number of samples: 406 Cold bend test Length of the samples: (2 ± 0,01) m Diameter of the mandrel: 40 mm Turns number: 10 Number of temperature cycles: Test is carried out at the temperature of -55 °C 407 410 411 Method Flammability Thermal life Resistance to fluids Flame extinction before s No flaming particles shall fall from the sample during the test and the tissue paper shall not be ignited Period of flame application shall be 30 s Number of specimen to be test: Maximum permissible variation in attenuation: ≤ dB Number of samples: Length of the specimen: (100 ± 0,05) m Lifetime shall be ≥ 100 000 h Visual examination in accordance with EN 3745-201 Maximum variation of weight: ∆m = % No cracks – Low colour modification – Readable marking See 7.4 for fluids table Visual examination in accordance with EN 3745-201 412 503 Humidity resistance Scrape abrasion Maximum residual attenuation: ≤ 0,2 dB Maximum variation of weight: ∆m = % Number of sample: Length of the specimen: (20 ± 0,1) m – Number of cycles: 15 Maximum variation of attenuation: ≤ dB Visual examination in accordance with EN 3745-201 Number of samples: – Load to be applied: 10 N Length of the sample: (0,75 ± 0,01) m – Number of cycles: 100 Maximum variation in attenuation: ≤ dB 504 Micro bending test Maximum residual attenuation 15 after removing the load: ≤ 0,1 dB Visual examination in accordance with EN 3745-201 Number of samples: – Load to be applied: 50 N Rate at which the load is applied: 50 N/min – Ø mandrel = 20 mm BS EN 4641-100:2015 EN 4641-100:2015 (E) Table — Fibre optic cable test methods (4 of 6) Test method EN 3745- 505 Designation of the test Cable tensile strength Test conditions and results For F = 150 N, maximum variation in attenuation: ≤ 0,5 dB Rupture load: ≥ 200 N Number of specimens: Permissible change in attenuation after the test: ≤ 0,5 dB 506 Impact resistance The test is carried out at the temperature of 20 °C Number of samples: – Length of sample: (2 ± 0,01) m Load to be applied: N – Radius R of the intermediate piece: 15 mm Drop: m – Number of impact: Visual examination in accordance with EN 3745-201 507 Cut-through Variation of attenuation (this parameter shall be monitored continuously during the test) Evaluation of the breakage or non-breakage of the specimen Number of samples: – Length of sample: (2 ± 0,01) m Load to be applied: 20 N – Rate of the load application: F = (50 ± 10) N/min Duration of load application : Maximum permissible variation of attenuation: 508 Torsion – For one cycle: < 0,2 dB – For 000 cycles ≤ 0,5 dB Length of sample: m ± 0,01 m – Number of cycles: 000 Load to be applied: 150 N Distance between the rotating grip and the fixed grip: (0,25 ± 0,01) m 509 Kink No kink as shown in the standard with a minimum bending radius of X optical cable outside diameter: 10 mm Maximum permissible variation of attenuation: ≤ dB Length of specimen: (2 ± 0,01) m Loop minimum diameter value: 20 mm Maximum variation of attenuation ≤ 0,2 dB 510 Bend Residual attenuation: after removing the specimen from the test equipment ≤ 0,1 dB Visual examination in accordance with EN 3745-201 Length of sample: (10 ± 0,01) m Load to be applied (M) to ensure contact between the cable and the mandrel): 20 N Diameter of the mandrel D = 25 mm – Number (N) of turns: 10 10 BS EN 4641-100:2015 EN 4641-100:2015 (E) Table — Fibre optic cable test methods (5 of 6) Test method EN 3745- Designation of the test Test conditions and results The outer diameter of electrical cable (CF, DM types or equivalent as defined in TR 6058) and optical cables, must be equivalent (around 16 gauges) 511 Cable to cable abrasion The definition of failure is the exposure of: – the conductor for electrical cable; – the material under the external jacket (typically strength member) for optical cable – Category A: electrical cable + optical cable minimum number of cycles = 800 000, load = 10 N – Category B: optical cables minimum number of cycles = 500 000, load = N 512 Flexure endurance 513 Crush resistance 601 Smoke density 514 602 603 Cable twist bend Toxicity Nuclear radiation Examination of test specimen for damage in accordance with EN 3745-201 (visual examination) Maximum variation of attenuation: ≤ 0,2 dB Number of samples: – Length of the sample: (2 ± 0,01) m Load to be applied: 10 N – Diameter of mandrel: 25 mm Number of cycles: 000 Not applicable Not applicable The specific optical smoke density (average of samples) Dm ≤ 200 within test duration under both the flaming and non-flaming conditions The value must be measured at the end of the test Applicable Not applicable Visual examination in accordance with EN 3745-201 Applicable to each jacket 701 Strippability Number of samples to be tested: Length of sample: (2 ± 0,01) m Blade design (See EN 2812) Load defined in relation to the cable construction to be stripped: F = 20 N / 10 mm Total length to be stripped: 50 mm for each jacket (may be stripped in multiple operations) 703 Durability of manufacturer's marking 705 Contrast measurement Examine marking in accordance with EN 3745-201 visual examination Number of samples: – Length: (2 ± 0,01) m Load to be applied: 1,5 N – Cycle number: 125 Not applicable 11 BS EN 4641-100:2015 EN 4641-100:2015 (E) Table — Fibre optic cable test methods (6 of 6) Test method EN 3745706 EN 3838 except "Voltage test" Designation of the test Durability of user identification markings Test conditions and results Not applicable General test conditions: — The tests shall be performed with the following launch condition: 85/85 % (far field/near field) 7.3 Special tests for optical fibre See Table Test method TIA/EIA-455-30-B Table Designation of the test Effective group index of refraction Test conditions and results Numerical aperture: 0,275 ± 0,015 (0,26 – 0,29) Number of sample: Length of the sample: (2 ± 0,01) m Wavelength: (850 ± 20) nm I a class is suitable for graded index fibre (1 ≤ g ≤ 3) I b class is suitable for pseudo graded index fibre (3 ≤ g ≤ 10) Zero dispersion wavelength (λ0): 320 nm ≤ λ0 ≤ 365 nm Zero dispersion slope (S0): S0 ≤ 0,11 ps/( nm2 • km) TIA/EIA-455-175-B Fibre chromatic dispersion Central operating wavelength (lλc): 750 nm ≤ λc ≤ 450 nm Chromatic dispersion D (λc) ≈ S0 / [ λc − (λ04 / λc3)] According to the ANSI/EIA-4920000-A specification, the optical fibre is in accordance with I a class Specimen should be in accordance with FOTP Minimal length of the sample: km Number of sample: Length of reference fibre < m per km of tested sample 12 BS EN 4641-100:2015 EN 4641-100:2015 (E) 7.4 Fluids test See Table Table — List of fluids Fluids family Type Fluid number see EN 3909 Fuel Kerosene Silicone base Hydraulic fluid Oils Cleaning fluids De-icing Cooling Phosphate base Mineral base Mineral base Mineral base Synthetic oil Test temperature ± °C Duration 24 h 70 70 80 80 125 — 70 Solvent 10 50 Aircraft 15 25 Solvent Coolant 25 Radar coolant 11 19 25 — Quality assurance See EN 9133 Designation, marking and colours 9.1 Designation EXAMPLE Description block CABLE FIBRE OPTIC Identity block EN4641-100 Number of the basic standard Product standard 9.2 Marking The marking shall comprise of the cable reference, the manufacturer code and the last two digits of the year of manufacture shall conform to EN 2424 The marking may be done wholly or partially in code by agreement with the user The outer jacket of the cable shall accept marking with UV laser Hot stamping is forbidden 13 BS EN 4641-100:2015 EN 4641-100:2015 (E) 9.3 Colours The colour of the outer jacket shall be light purple 10 Delivery conditions 10.1 Packaging See EN 4641-001 10.2 Labelling See EN 4641-001 10.3 Delivery lengths The minimum delivery length of a fibre or cable is: 50 m 11 Storage Fibre optic cables shall be stored as described hereunder: humidity: ≤ 90 %; temperatures: -65 °C to 75 °C; tensile strength on cable: ≤ 30 N 14 BS EN 4641-100:2015 EN 4641-100:2015 (E) Bibliography [1] ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids 3) 3) Published by: International International Standardisation Organisation http://www.iso.org/ 15 This page deliberately left blank This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services BSI is incorporated by Royal Charter British Standards and other standardization products are published by BSI Standards Limited About us Revisions We bring together 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