SIST EN 50377-4-2:2011
(Main)Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications - Part 4-2: Type SC/APC simplex 8° terminated on IEC 60793-2-50 of types B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category U
Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications - Part 4-2: Type SC/APC simplex 8° terminated on IEC 60793-2-50 of types B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category U
1.1 Product definition
This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements which a connector terminated with cylindrical zirconia 8° angled PC ferrule and assembled singlemode resilient alignment sleeve SC-APC simplex connector set (plug/adaptor/plug), adaptor and patchcord must meet in order for it to be categorised as an EN standard product.
Since different variants and grades of performance are permitted, product marking details are given in 3.6.
1.2 Intermateability
Although all products conforming to the requirements of this standard will intermate, the resulting level of random attenuation performance will only be ensured in accordance with Table 1. The intention is that this will be true irrespective of the manufacturing source(s) of the product.
When intermating plug variants having different attenuation grades, the resulting level of attenuation cannot be assured to be any better than the worst attenuation grade.
The intermating of a grade C plug with a grade B plug will result in an uncertain level of random attenuation performance.
1.3 Operating environment
The tests selected combined with the severities and durations are representative of a category U
environment described in EN 61753-1.
1.4 Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with this standard does not guarantee the reliability of the product. This should be predicted using a recognised reliability assessment programme.
1.5 Quality assurance
Compliance with this standard does not guarantee the manufacturing consistency of the product. This should be maintained using a recognised quality assurance programme.
Steckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter-Datenübertragungssysteme - Produktnormen - Teil 4 2: Bauart SC-APC-Simplex, 8°, zum Anschluss an Einmodenfasern der Typen B1.1 und B1.3 nach IEC 60793-2-50 mit Zirkoniumdioxyd-Ferrule für die Kategorie U
Jeux de connecteurs et composants d'interconnexion à utiliser dans les systèmes de communication par fibres optiques - Spécifications de produits - Partie 4 2: Type simplex SC/APC à 8 degrés câblé sur une fibre unimodale de types B1.1 et B1.3 selon la CEI 60793-2-50, avec férule en zircone plein de catégorie U
Konektorski sestavi in povezovalne komponente za optične komunikacijske sisteme - Specifikacije izdelka - 4-2. del: Tip SC/APC simplex 8°, zaključen z enorodnim vlaknom po IEC 60793-2-50 kategorij B1.1 in B1.3 s tulko iz polnega cirkonija kategorije U
1.1 Opredelitev izdelka
Ta standard vsebuje začetne zahteve za dimenzije, optične in mehanske zahteve ter zahteve za okoljsko učinkovitost, ki jim morajo ustrezati konektor, zaključen s cilindrično tulko PC iz cirkonija pod kotom 8 °, in sestavljeni enorodni prožni (z obojko) konektorski sestav simpleks SC-APC (priključek-adapter-priključek), adapter in priključni kabel, da bi bili opredeljeni kot izdelek standarda EN.
Ker so dovoljene različice in različne stopnje zmogljivosti, so podrobnosti o označevanju izdelka navedene v 3.6.
1.2 Medsebojna združljivost
Čeprav so vsi izdelki, ki ustrezajo zahtevam iz tega standarda, medsebojno združljivi, so ravni uspešnosti naključnega slabljenja zagotovljene le v skladu s preglednico 1. To velja ne glede na vire izdelave izdelka.
Kadar imajo medsebojno združljivi priključki različne stopnje slabljenja, se ne more zagotoviti, da bi bila raven slabljenja boljša od najslabše stopnje slabljenja.
Medsebojna združljivost priključka stopnje C s priključkom stopnje B povzroča negotovo raven uspešnosti naključnega slabljenja.
.3 Delovno okolje
Izbrani preskusi v kombinaciji s strogostjo in trajanjem predstavljajo kategorijo okolja U, opisano v EN 61753-1.
1.4 Zanesljivost
Medtem ko je pričakovana življenjska doba izdelka v tem okolju 20 let, skladnost s tem standardom ne jamči zanesljivosti izdelka. Ta se mora predvideti z uporabo priznanega programa za ocenjevanje zanesljivosti.
1.5 Zagotavljanje kakovosti
Skladnost s tem standardom ne jamči skladnosti izdelave izdelka. Ta se mora vzdrževati z uporabo priznanega programa za zagotavljanje kakovosti.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.FLMVNHSteckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter-Datenübertragungssysteme - Produktnormen - Teil 4 2: Bauart SC-APC-Simplex, 8°, zum Anschluss an Einmodenfasern der Typen B1.1 und B1.3 nach IEC 60793-2-50 mit Zirkoniumdioxyd-Ferrule für die Kategorie UJeux de connecteurs et composants d'interconnexion à utiliser dans les systèmes de communication par fibres optiques - Spécifications de produits - Partie 4 2: Type simplex SC/APC à 8 degrés câblé sur une fibre unimodale de types B1.1 et B1.3 selon la CEI 60793-2-50, avec férule en zircone plein de catégorie UConnector sets and interconnect components to be used in optical fibre communication systems - Product specifications - Part 4-2: Type SC/APC simplex 8° terminated on IEC 60793-2-50 of types B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category U33.180.20Fibre optic interconnecting devicesICS:Ta slovenski standard je istoveten z:EN 50377-4-2:2011SIST EN 50377-4-2:2011en01-junij-2011SIST EN 50377-4-2:2011SLOVENSKI
STANDARD
SIST EN 50377-4-2:2011
EUROPEAN STANDARD EN 50377-4-2 NORME EUROPÉENNE
EUROPÄISCHE NORM March 2011
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 50377-4-2:2011 E
ICS 33.180.20
English version
Connector sets and interconnect components to be used in optical fibre communication systems -
Product specifications -
Part 4-2: Type SC/APC simplex 8° terminated on IEC 60793-2-50 of types B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category U
Jeux de connecteurs et composants d'interconnexion à utiliser dans les systèmes de communication par fibres optiques -
Spécifications de produits -
Partie 4 2: Type simplex SC/APC à 8 degrés câblé sur une fibre unimodale de types B1.1 et B1.3 selon la CEI 60793-2-50, avec férule en zircone plein de catégorie U
Steckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter-Datenübertragungssysteme -
Produktnormen -
Teil 4 2: Bauart SC-APC-Simplex, 8°, zum Anschluss an Einmodenfasern der Typen B1.1 und B1.3 nach IEC 60793-2-50 mit Zirkoniumdioxyd-Ferrule für die Kategorie U
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.
SIST EN 50377-4-2:2011
EN 50377-4-2:2011 – 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 50377-4-2 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 __________ SIST EN 50377-4-2:2011
– 3 – EN 50377-4-2:2011 Connector sets and interconnect components to be used in optical fibre communication systems – Product specifications Part 4-2: Type SC/APC simplex 8° terminated on IEC 60793-2-50 of types B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category U Description Performance Coupling mechanism: Push-pull Application: For use in EN Category U (uncontrolled environment) Configuration: Plug/adaptor/plug Attenuation grades: (random mate) B: ≤ 0,12 dB mean ≤ 0,25 dB for 97 % of measurements
C: ≤ 0,25 dB mean
≤ 0,50 dB for 97 % of measurements Fibre category: EN 60793-2-50 Types B1.1 and B1.3 Cable type: See Table 3 Return loss grade: (random mate) 1: ≥ 60 dB mated ≥ 55 dB unmated Related documents: EN 60794-2 Optical fibre cables – Part 2: Indoor cables – Sectional specification (IEC 60794-2) EN 61300 series Fibre optic interconnecting devices and passive components – Basic test and measurement procedures (IEC 61300 series) EN 61753-1 Fibre optic interconnecting devices and passive components performance standard – Part 1: General and guidance for performance standards (IEC 61753-1) EN 61754-4 Fibre optic connector interfaces – Part 4: Type SC connector family (IEC 61754-4) EN 61755-1 Fibre optic connector optical interfaces – Part 1: Optical interfaces for single mode non-dispersion shifted fibres – General and guidance (IEC 61755-1) EN 61755-3-2:2009 Fibre optic connector optical interfaces – Part 3-2: Optical interface, 2,5 mm and 1,25 mm diameter cylindrical full zirconia ferrules for 8 degrees angled-PC single mode fibres (IEC 61755-3-2:2006, mod. + corr. Jan. 2009) ETSI EN 300 019 series Environmental Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment ETSI TS 100 671 Transmission and Multiplexing (TM); Passive optical components; Optical fibre connectors for single mode optical fibre communication systems; Common requirements and conformance testing Outline and maximum dimensions: 68REF.58 MAX.79REF.60 MAX.
SIST EN 50377-4-2:2011
EN 50377-4-2:2011 – 4 – Contents 1Scope . 61.1Product definition . 61.2Intermateability . 61.3Operating environment . 61.4Reliability . 61.5Quality assurance . 62Normative references . 73Description . 83.1General . 83.2Plug . 83.3Adaptor . 83.4Materials . 83.5Dimensions . 83.6Colour and marking . 84Variants . 94.1Terminated plug . 94.2Adaptor . 95Dimensional requirements . 105.1Outline dimensions . 105.2Mating face and other limit dimensions . 126Tests . 206.1Sample size . 206.2Test and measurement methods . 216.3Test sequence . 216.4Pass/fail criteria . 217Test report . 218Product qualification requirements . 218.1Dimensional and marking requirements. 218.2Optical performance requirements . 228.3Mechanical performance requirements . 238.4Environmental performance requirements . 27Annex A (informative)
Attenuation against reference . 29A.1Test details . 29A.2Reference connector details. 29Annex B (normative)
Adaptor matched reference plug details . 30Annex C (normative)
Sample size and product sourcing requirements . 31Annex D (informative)
Zirconia ferrule response surface . 32Bibliography . 33 SIST EN 50377-4-2:2011
– 5 – EN 50377-4-2:2011 Figures Figure 1 – Outline dimensions – Plug . 10Figure 2 – Outline dimensions . 11Figure 3 – Plug mating face and other limit dimensions . 12Figure 4 – Adaptor mating face and other limit dimensions . 14Figure 5 – Ferrule endface geometry after termination . 16Figure 6 – Positioning of fibre core . 17Figure 7 – Ferrule end face geometry – Allowable undercut . 18Figure 8 – Requirements for the attenuation grades
for the plug fibre core connected to the ideal reference . 19Figure 9 – Pin gauge for adaptor . 20Figure D.1 – Radius vs. undercut and apex offset. 32 Tables Table 1 – Ensured level of random attenuation . 6Table 2 – Preferred colour scheme . 8Table 3 – Plug variants . 9Table 4 – Adaptor variants . 9Table 5 – Optical interface parameter values for APC ferrules . 16Table 6 – Geometrical parameters . 17Table 7 – Optical performance requirements . 22Table 8 – Mechanical performance requirements . 23Table 9 – Environmental performance requirements . 27Table A.1 – Test details for reference connectors . 29Table C.1 – Sample size and product sourcing requirements . 31 SIST EN 50377-4-2:2011
EN 50377-4-2:2011 – 6 – 1 Scope 1.1 Product definition This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements which a connector terminated with cylindrical zirconia 8° angled PC ferrule and assembled singlemode resilient alignment sleeve SC-APC simplex connector set (plug/adaptor/plug), adaptor and patchcord must meet in order for it to be categorised as an EN standard product. Since different variants and grades of performance are permitted, product marking details are given in 3.6. 1.2 Intermateability Although all products conforming to the requirements of this standard will intermate, the resulting level of random attenuation performance will only be ensured in accordance with Table 1. The intention is that this will be true irrespective of the manufacturing source(s) of the product. When intermating plug variants having different attenuation grades, the resulting level of attenuation cannot be assured to be any better than the worst attenuation grade. The intermating of a grade C plug with a grade B plug will result in an uncertain level of random attenuation performance. Table 1 – Ensured level of random attenuation Plug variant / Attenuation grade C B C C C B C B
1.3 Operating environment The tests selected combined with the severities and durations are representative of a category U environment described in EN 61753-1. 1.4 Reliability Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with this standard does not guarantee the reliability of the product. This should be predicted using a recognised reliability assessment programme. 1.5 Quality assurance Compliance with this standard does not guarantee the manufacturing consistency of the product. This should be maintained using a recognised quality assurance programme. SIST EN 50377-4-2:2011
– 7 – EN 50377-4-2:2011 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. EN 60793-2-50 Optical fibres – Part 2-50: Product specifications – Sectional specification for class B single-mode fibres (IEC 60793-2-50) EN 61300-2-1 Fibre optic interconnecting devices and passive components – Basic test and measurement procedures – Part 2-1: Tests – Vibration (sinusoidal) (IEC 61300-2-1) EN 61300-2-2 Part 2-2: Tests – Mating durability (IEC 61300-2-2) 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 61300-2-6 Part 2-6: Tests – Tensile strength of coupling mechanism (IEC 61300-2-6) EN 61300-2-7 Part 2-7: Tests – Bending moment (IEC 61300-2-7) EN 61300-2-12 Part 2-12: Tests – Impact (IEC 61300-2-12) 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 61300-2-42 Part 2-42: Tests – Static side load for connectors (IEC 61300-2-42) EN 61300-2-44 Part 2-44: Tests – Flexing of the strain relief of fibre optic devices (IEC 61300-2-44) EN 61300-2-46 Part 2-46: Tests – Damp heat cyclic (IEC 61300-2-46) EN 61300-3-6 Part 3-6: Examinations and measurements – Return loss (IEC 61300-3-6) EN 61300-3-10 Part 3-10: Examinations and measurements – Gauge retention force (IEC 61300-3-10) EN 61300-3-15 Part 3-15: Examinations and measurements – Dome eccentricity of a convex polished ferrule endface (IEC 61300-3-15) EN 61300-3-16 Part 3-16: Examinations and measurements – Endface radius of spherically polished ferrules (IEC 61300-3-16) EN 61300-3-23 Part 3-23: Examination and measurements – Fibre position relative to ferrule endface (IEC 61300-3-23) EN 61300-3-28 Part 3-28: Examinations and measurements – Transient loss (IEC 61300-3-28) EN 61300-3-34 Part 3-34: Examinations and measurements – Attenuation of random mated connectors (IEC 61300-3-34) EN 61300-3-42 Part 3-42: Examinations and measurements – Attenuation of single mode alignment sleeves and or adaptors with resilient alignment sleeves (IEC 61300-3-42) EN 61753-1 Fibre optic interconnecting devices and passive components performance standard – Part 1: General and guidance for performance standards (IEC 61753-1) ISO 8015 Technical drawings – Fundamental tolerancing principle SIST EN 50377-4-2:2011
EN 50377-4-2:2011 – 8 – 3 Description 3.1 General The SC-APC connector is a single position plug connector set of plug/adaptor/plug configuration characterised by a cylindrical, spring loaded butting ferrule of 2,5 mm nominal diameter and a latched push-pull coupling mechanism. The optical alignment mechanism of the connectors is of a resilient sleeve style. 3.2 Plug The plug features a cylindrical zirconia ceramic ferrule and a push-pull coupling mechanism. The plug housing has a single male key, which is used to limit the relative rotation between mated plugs. A cover (dust cap) to protect the ferrule end face when the connector is in the unmated condition shall be provided. 3.3 Adaptor The adaptor has a zirconia ceramic resilient alignment sleeve. The mounting style is a rectangular flange – simplex.
Covers (dust caps) are provided to protect each port of the adaptor. 3.4 Materials Materials which are not specified or which are not specifically described are left to the discretion of the manufacturer. 3.5 Dimensions Outline dimensions and other dimensions necessary to ensure intermateability or which affect performance are specified. All other dimensions are left to the discretion of the manufacturer. Where the mating face limit dimensions are not in agreement with an IEC Interface Standard this is clearly stated. 3.6 Colour and marking Marking of the product shall be in the following order of precedence: – identification of manufacturer; – manufacturing date code: year/week; – manufacturers part number; – variant identification number. The preferred colour scheme is given in Table 2. Table 2 – Preferred colour scheme Delatch housing SC-APC plug Adaptor Green, RAL 6018 Green, RAL 6018
SIST EN 50377-4-2:2011
– 9 – EN 50377-4-2:2011 4 Variants 4.1 Terminated plug The defined fibre/cable variants are given in Table 3. Table 3 – Plug variants
E N 5 0377-4-2- * * -*1
Variant No. Fibre/cable mm Structure Note
01 0,7 - 1,4 Buffered fibre 8 degrees
02 2,0 ± 0,2 Reinforced cable8 degrees
03 2,5 ± 0,2 Reinforced cable8 degrees
04 2,8 ± 0,2 Reinforced cable8 degrees
05 3,0 ± 0,2 Reinforced cable8 degrees
06 3,2 ± 0,2 Reinforced cable8 degrees
Variant Attenuation grade
B B
C C
Code Return loss grade
1 1
4.2 Adaptor The defined adaptor variants are given in Table 4. Table 4 – Adaptor variants
E N 5 0377-4-2- * * *
Variant number Format
A01 Rectangular flange - simplex
SIST EN 50377-4-2:2011
EN 50377-4-2:2011 – 10 – 5 Dimensional requirements 5.1 Outline dimensions 5.1.1 Plug Variant No. 01 BH Variant No. 02 – 06 BF
Ref. Dimensions Note min. mm max.BH
58 BF
60 Figure 1 – Outline dimensions – Plug SIST EN 50377-4-2:2011
– 11 – EN 50377-4-2:2011 5.1.2 Adaptor Variant No. A01
Ref. Dimensions Note min. mm max.AF 21,5 22,5 AG 17,9 18,1 AH 12,6 13,0 AI 9,2 9,4 AJ 2,2 2,4Diameter AK 27,0 27,8 AL 2,8 3,2 AM 14,4 16,4 AN 7,7 8,0 AO 1,7 2,0See NOTE NOTE Panel thickness should be between 1,0 mm and 1,5 mm. a) Adaptor
Ref. Dimensions Note min. mm max.W 2,4 2,6Diameter X 13,1 13,5 Y 17,9 18,1 Z 9,5 10,0 b) Panel cut out Figure 2 – Outline dimensions SIST EN 50377-4-2:2011
EN 50377-4-2:2011 – 12 – 5.2 Mating face and other limit dimensions 5.2.1 Plug CROSS SECTION A-A'
NOTES
See following page. Figure 3 – Plug mating face and other limit dimensions SIST EN 50377-4-2:2011
– 13 – EN 50377-4-2:2011 References Dimensions Note min. mm max. A 2,498 5 2,499 5Diameter d e B 4,80 4,90Diameter C 6,80 7,40 D 4,90 5,30 E 6,70 6,80 F 19 23Degree G 25 35Degree H 7,15 7,50a b β 89,5 90,5Degree I 0,80 1,20 J 5,30 5,50 K -0,10 0,05c L 2,11 2,50 M 2,00 2,80 N 6,60 6,80 O 1,60 1,80 P 8,89 8,99 Q 0,80 1,00 R 7,29 7,39
rS
0,80 0,90Radius T 4,05 4,15 U 5,40 5,60 V 0 0,50 cBC 0 0,50Chamfer EA 90 Degree f a Ferrule compression force shall be from 7,8 N to 11,8 N when the ferrule is compressed to a point where H is (7,00 ± 0,10) mm. b This value shows the dimension after the ferrule is polished and in the unmated condition. c The negative dimension refers to the position of the inside bottom plane in the direction towards the rear of the connector relative to the mechanical reference plane. d Envelope condition in accordance with ISO 8015. e Surface roughness Ra ≤ 0,1 µm. f The dimension EA is defined as an angle between two planes: One plane, plane A, through the axis of the ferrule and the axis of symmetry of the guide key. The other plane, plane B, passes through the axis of the ferrule and the normal to the angle PC reference plane. Figure 3 – Plug mating face and other limit dimensions (continued) SIST EN 50377-4-2:2011
EN 50377-4-2:2011 – 14 – 5.2.2 Adaptor MECHANICAL REFERENCE PLANE
Figure 4 – Adaptor mating face and other limit dimensions SIST EN 50377-4-2:2011
– 15 – EN 50377-4-2:2011 References Dimensions Note min. mm max.A
Diameter a B 4,69 4,79Diameter D 4,9 5,5 H 6,9 7,1 I 0,4 0,8 J 5,51 5,9 K 0,06 1 L 1,9 2,1 O 2,0 2,2 P 9,0 9,1 R 7,4 7,5 S 1,0 1,1 T 3,8 4,04 U 5,0 5,4Degree V 0,6 1,6 AA 27 33Degree AB 0,8 1,0 AC 0,4 0,6 AD 0,7 0,8 AE 0,4 0,6 BA 5,4 5,6 BB 10,8 11,2 a The connector alignment feature is a zirconia ceramic resilient sleeve which is free to move in the adaptor. Alternative materials may be used for the sleeve that have directly compatible materials properties with zirconia. The gauge retention force shall be measured with 2 gauge pins, each inserted to the middle of the alignment feature. The gauge retention force shall be from 2,0 N to 5,9 N, for the extraction of one gauge. The surface roughness of the inside of the alignment sleeve shall be Ra < 0,3 µm. Figure 4 – Adaptor mating face and other limit dimensions (continued) SIST EN 50377-4-2:2011
EN 50377-4-2:2011 – 16 – 5.2.3 Ferrule endface geometry after termination
Figure 5 – Ferrule endface geometry after termination
Table 5 – Optical interface parameter values for APC ferrules References Parameter values Notes
min. max.
J 0,8 1,7 Diameter, mm K N/A 1,8 mm SIST EN 50377-4-2:2011
– 17 – EN 50377-4-2:2011
F H G
Figure 6 – Positioning of fibre core
Table 6 – Geometrical parameters References Parameter values Notes Grade B Grade C min. max. min. max. A - 100 a - 100 a b c, nm B 5 12 5 12 Radius b, mm C 0 50 0 50 dome offset µm D 2,498 5 2,499 5 2,498 5 2,499 5 Diameter, mm E 0 0,2 0 0,3 Degrees F 0 0,001 0 0 0,001 4 Radius, mm G 0 0,000 3 0 0,000 3 Radius, mm H 0 50 0 50 Degrees I 8 8 Degrees J 0,8 1,7 0,8 1,7 Diameter, mm K - 1,8 - 1,8 mm a Contact force 4,9 N minimum. The given endface conditions are for 3 mol % Yttria stabilised Zirconia ZrO2 ferrule with grain size < 0,35 µm, a Young’s modulus between (200 ± 20) GPa and a Poisson ratio between 0,30 to 0,31 which is normative for this specification.
()60101010198832626)795,0(Maximum−×−×+×−×=−CBBBA
b The radius and fibre undercut shall be measured in all directions over a diameter of 0,25 mm. c The negative value refers to fibre protrusion.
SIST EN 50377-4-2:2011
EN 50377-4-2:2011 – 18 – Allowable Undercut for 4,9 N contact force and Apex Offset = 50 µm 05010015020025030002468101214Endface Radius [mm]Allowable Undercut [nm] ()6010C10B10BB1988A326267950Maximum−⋅−⋅+⋅−⋅=−, Figure 7 – Ferrule end face geometry – Allowable undercut The figure and the values above define the parameters that must be met by each individual plug in order to ensure that the specified random attenuation performance grade will be met in any connection. SIST EN 50377-4-2:2011
– 19 – EN 50377-4-2:2011 5.2.4 Control of fibre core position and axis Figure 8 shows the relationship between the axis of the fibre and the position of the fibre core relative to the optical datum (see 5.2.3).
1.21.11.00.90.80.70.60.50.40.30.20.10.0Angular offset between fibre axis and ideal reference [°]1.61.51.41.31.21.11.00.90.80.70.60.50.40.30.20.10.0Offset between fibre core and ideal reference plug [µm]Grade C Grade B NOTE Ideal reference plug has zero angular offset and zero lateral offset. The figure and the values above define the parameters that should be met by an individual plug after termination in order to ensure that the specified random attenuation performance grade will be met. The graph lines for grade B and C give the maximum value for the two parameters to be met by any plug after the manufacturing process. The specified random performance however can only be met with a Raleigh distribution of each of these parameters. The lines are based on a worst case mode field diameter mismatch. ()()+∗∗∗−=+++−22212222122211*2*)****(*22222121*2log10(dB) ILWWaWWWWNeWWWWλτπ) where Wi is the mode field radii (µm), i = 1, 2
(calculation for the above curve is done with worst case mode field diameter mismatch W1 = 4,45 µm; W2 = 4,75 µm); N1 is the refractive index between the end faces (in this case it is equal with the refractive index of the core); A is the fibre core eccentricity (µm); 2) is the fibre angle (radian); λ is the wavelength (Calculation for the above curve is done with 1 310 nm).
Figure 8 – Requirements for the attenuation grades
for the plug fibre core connected to the ideal reference Ferrule axis Fibre axis τ SIST EN 50377-4-2:2011
EN 50377-4-2:2011 – 20 – 5.2.5 Pin gauge for adaptor
Reference Dimensions Note
min. mm max. A 2,499 3 2,499 5NOTE 1, diameter B 12,5 13,5 C 1,0 1,5 D 28 32Angle in degrees NOTE 1
Envelope condition in accordance with ISO 8015. NOTE 2
Surface roughness Ra ≤ 0,1 µm. Figure 9 – Pin gauge for adaptor 6 Tests 6.1 Sample size For the purpose of this specification a sample is defined as a plug/adaptor/plug connector set or a patchcord. All samples shall be randomly selected. The sample size and product sourcing requirements are given in Annex C. The length of cable (or fibre) on each side of the connector set shall be 2 m min. The length of the patchcord samples which shall be included in the test chamber together with the two attached connectors is 3 m to 5 m.
Ra see Note 2 SIST EN 50377-4-2
...
SLOVENSKI STANDARD
oSIST prEN 50377-4-2:2009
01-januar-2009
.RQHNWRUVNLVHVWDYLLQSRYH]RYDOQHNRPSRQHQWH]DRSWLþQHNRPXQLNDFLMVNH
VLVWHPH6SHFLILNDFLMDL]GHONDGHO 7LS6&$3&VLPSOH[ƒ]DNOMXþHQ]
HQRURGQLPYODNQRPSR,(& NDWHJRULM%LQ%VWXONRL]SROQHJD
FLUNRQLMDNDWHJRULMH8
Connector sets and interconnect components to be used in optical fibre communication
systems - Product specifications - Part 4-2: Type SC/APC simplex 8° terminated on IEC
60793-2-50 category B1.1 and B1.3 singlemode fibre, with full zirconia ferrule Category
U
Ta slovenski standard je istoveten z: prEN 50377-4-2:2008
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
oSIST prEN 50377-4-2:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN 50377-4-2:2009
---------------------- Page: 2 ----------------------
oSIST prEN 50377-4-2:2009
DRAFT
EUROPEAN STANDARD
prEN 50377-4-2
NORME EUROPÉENNE
October 2008
EUROPÄISCHE NORM
ICS 33.180.20
English version
Connector sets and interconnect components to be used in optical fibre
communication systems - Product specifications -
Part 4-2: Type SC/APC simplex 8° terminated on IEC 60793-2-50 category
B1.1 and B1.3 singlemode fibre, with full zirconia ferrule Category U
To be completed To be completed
This draft European Standard is submitted to CENELEC members for CENELEC enquiry.
Deadline for CENELEC: 2009-03-27.
It has been drawn up by CLC/TC 86BXA.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CENELEC 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, 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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to
change without notice and shall not be referred to as a European Standard.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Project: 14148 Ref. No. prEN 50377-4-2:2008 E
Draft for Enquiry
---------------------- Page: 3 ----------------------
oSIST prEN 50377-4-2:2009
prEN 50377-4-2:2008 – 2 –
1 Foreword
2 This draft European Standard was prepared by the Technical Committee CENELEC TC 86BXA, Fibre optic
3 interconnect, passive and connectorised components. It is submitted to the CENELEC enquiry.
4 __________
Draft for Enquiry
---------------------- Page: 4 ----------------------
oSIST prEN 50377-4-2:2009
– 3 – prEN 50377-4-2:2008
Connector sets and interconnect components to be used in optical fibre communication systems –
Product specifications
Part 4-2: Type SC/APC simplex 8° terminated on IEC 60793-2-50 category B1.1 and B1.3 singlemode
fibre, with full zirconia ferrule Category U
Description Performance
Coupling mechanism: Push-pull Application: For use in EN Category U
(uncontrolled environment)
Configuration: Plug/adaptor/plug Attenuation grades: B: ≤ 0,12 dB mean
(random mate) ≤ 0,25 dB for > 97 %
of measurements
C: ≤ 0,25 dB mean
Fibre category: EN 60793-2-50
≤ 0,50 dB for > 97 %
Types B1.1 and B1.3
of measurements
Cable type: See Table 3 Return loss grade: 1: ≥ 60 dB mated
(random mate) ≥ 55 dB unmated
Related documents:
EN 60794-2 Optical fibre cables – Part 2: Indoor cables – Sectional specification (IEC 60794-2)
EN 61300 series Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures (IEC 61300 series)
EN 61753-1 Fibre optic interconnecting devices and passive components performance standard –
Part 1: General and guidance for performance standards (IEC 61753-1)
EN 61754-4 Fibre optic connector interfaces – Part 4: Type SC connector family (IEC 61754-4)
EN 61755-1 Fibre optic connector optical interfaces – Part 1: Optical interfaces for single mode
non-dispersion shifted fibres – General and guidance (IEC 61755-1)
1)
EN 61755-3-2 Fibre optic connector optical interfaces – Part 3-2: Optical interface, 2,5 mm and
1,25 mm diameter cylindrical full zirconia ferrules for 8 degrees angled-PC single
mode fibres (IEC 61755-3-2, mod.)
ETSI EN 300 019 series Environmental Engineering (EE); Environmental conditions and environmental tests
for telecommunications equipment
ETSI TS 100 671 Transmission and Multiplexing (TM); Passive optical components; Optical fibre
connectors for single mode optical fibre communication systems; Common
requirements and conformance testing
Outline and maximum dimensions:
68 REF. 79 REF.
58 MAX. 60 MAX.
5
1)
At draft stage.
Draft for Enquiry
---------------------- Page: 5 ----------------------
oSIST prEN 50377-4-2:2009
prEN 50377-4-2:2008 – 4 –
6 Contents
7 1 Scope . 6
8 1.1 Product definition . 6
9 1.2 Intermateability . 6
10 1.3 Operating environment . 6
11 1.4 Reliability . 6
12 1.5 Quality assurance . 6
13 2 Normative references . 7
14 3 Description . 8
15 3.1 Plug . 8
16 3.2 Adaptor . 8
17 3.3 Materials . 8
18 3.4 Dimensions . 8
19 3.5 Colour and marking . 8
20 4 Variants . 9
21 4.1 Terminated plug . 9
22 4.2 Adaptor . 9
23 5 Dimensional requirements . 10
24 5.1 Outline dimensions . 10
25 5.2 Mating face and other limit dimensions . 12
26 6 Tests . 20
27 6.1 Sample size . 20
28 6.2 Test and measurement methods . 21
29 6.3 Test sequence . 21
30 6.4 Pass/fail criteria . 21
31 7 Test report . 21
32 8 Product qualification requirements . 21
33 8.1 Dimensional and marking requirements. 21
34 8.2 Optical performance requirements . 22
35 8.3 Mechanical performance requirements . 23
36 8.4 Environmental performance requirements . 27
37 Annex A (informative) Attenuation against reference . 29
38 A.1 Test details . 29
39 A.2 Reference connector details. 29
40 Annex B (normative) Adaptor matched reference plug details . 30
41 Annex C (normative) Sample size and product sourcing requirements . 31
42 Annex D (informative) Zirconia ferrule response surface . 32
43 Bibliography . 33
44
Draft for Enquiry
---------------------- Page: 6 ----------------------
oSIST prEN 50377-4-2:2009
– 5 – prEN 50377-4-2:2008
45 Figures
46 Figure 1 – Outline dimensions – Plug . 10
47 Figure 2 – Outline dimensions . 11
48 Figure 3 – Plug mating face and other limit dimensions . 12
49 Figure 4 – Adaptor mating face and other limit dimensions . 14
50 Figure 5 – Ferrule endface geometry after termination . 16
51 Figure 6 – Positioning of fibre core . 17
52 Figure 7 – Ferrule end face geometry – Allowable undercut . 18
53 Figure 8 – Requirements for the attenuation grades for the plug fibre core connected to the ideal
54 reference . 19
55 Figure 9 – Pin gauge for adaptor . 20
56 Figure D.1 – Radius vs. undercut and apex offset. 32
57
58 Tables
59 Table 1 – Ensured level of random attenuation . 6
60 Table 2 – Preferred colour scheme . 8
61 Table 3 – Plug variants . 9
62 Table 4 – Adaptor variants . 9
63 Table 5 – Optical interface parameter values for APC ferrules . 16
64 Table 6 – Geometrical parameters . 17
65 Table 7 – Optical performance requirements . 22
66 Table 8 – Mechanical performance requirements . 23
67 Table 9 – Environmental performance requirements . 27
68 Table A.1 – Test details for reference connectors . 29
69 Table C.1 – Sample size and product sourcing requirements . 31
70
71
Draft for Enquiry
---------------------- Page: 7 ----------------------
oSIST prEN 50377-4-2:2009
prEN 50377-4-2:2008 – 6 –
72 1 Scope
73 1.1 Product definition
74 This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental
75 performance requirements which a connector terminated with cylindrical zirconia 8 degree angled PC ferrule
76 and assembled singlemode resilient alignment sleeve SC-APC simplex connector set (plug/adaptor/plug),
77 adaptor and patchcord must meet in order for it to be categorised as an EN standard product.
78 Since different variants and grades of performance are permitted, product marking details are given in 3.5.
79 1.2 Intermateability
80 Although all products conforming to the requirements of this standard will intermate, the resulting level of
81 random attenuation performance will only be ensured in accordance with Table 1. The intention is that this
82 will be true irrespective of the manufacturing source(s) of the product.
83 When intermating plug variants having different attenuation grades, the resulting level of attenuation cannot
84 be assured to be any better than the worst attenuation grade.
85 The intermating of a grade C plug with a grade B plug will result in an uncertain level of random attenuation
86 performance.
87 Table 1 – Ensured level of random attenuation
Plug variant / Attenuation grade C B
C C C
B C B
88
89 1.3 Operating environment
90 The tests selected combined with the severities and durations are representative of a Category U
91 environment described in EN 61753-1.
92 1.4 Reliability
93 Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with
94 this standard does not guarantee the reliability of the product. This should be predicted using a recognised
95 reliability assessment programme.
96 1.5 Quality assurance
97 Compliance with this standard does not guarantee the manufacturing consistency of the product. This should
98 be maintained using a recognised quality assurance programme.
Draft for Enquiry
---------------------- Page: 8 ----------------------
oSIST prEN 50377-4-2:2009
– 7 – prEN 50377-4-2:2008
99 2 Normative references
100 The following referenced documents are indispensable for the application of this document. For dated
101 references, only the edition cited applies. For undated references, the latest edition of the referenced
102 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 61300-2-1 Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 2-1: Tests – Vibration (sinusoidal)
(IEC 61300-2-1)
EN 61300-2-2 Part 2-2: Tests – Mating durability (IEC 61300-2-2)
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 61300-2-6 Part 2-6: Tests – Tensile strength of coupling mechanism (IEC 61300-2-6)
EN 61300-2-7 Part 2-7: Tests – Bending moment (IEC 61300-2-7)
EN 61300-2-12:2005 Part 2-12: Tests – Impact (IEC 61300-2-12:2005)
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 61300-2-42 Part 2-42: Tests – Static side load for connectors (IEC 61300-2-42)
EN 61300-2-44 Part 2-44: Tests – Flexing of the strain relief of fibre optic devices
(IEC 61300-2-44)
EN 61300-2-46 Part 2-46: Tests – Damp heat cyclic (IEC 61300-2-46)
EN 61300-3-6:2003 Part 3-6: Examinations and measurements – Return loss (IEC 61300-3-6:2003)
EN 61300-3-10 Part 3-10: Examinations and measurements – Gauge retention force
(IEC 61300-3-10)
EN 61300-3-15 Part 3-15: Examinations and measurements – Dome eccentricity of a convex
polished ferrule endface (IEC 61300-3-15)
EN 61300-3-16 Part 3-16: Examinations and measurements – Endface radius of spherically
polished ferrules (IEC 61300-3-16)
EN 61300-3-23 Part 3-23: Examination and measurements – Fibre position relative to ferrule
endface (IEC 61300-3-23)
EN 61300-3-28 Part 3-28: Examinations and measurements – Transient loss (IEC 61300-3-28)
EN 61300-3-34 Part 3-34: Examinations and measurements – Attenuation of random mated
connectors (IEC 61300-3-34)
EN 61300-3-42 Part 3-42: Examinations and measurements – Attenuation of single mode
alignment sleeves and or adaptors with resilient alignment sleeves
(IEC 61300-3-42)
EN 61753-1 Fibre optic interconnecting devices and passive components performance standard –
Part 1: General and guidance for performance standards (IEC 61753-1)
ISO 8015 Technical drawings – Fundamental tolerancing principle
Draft for Enquiry
---------------------- Page: 9 ----------------------
oSIST prEN 50377-4-2:2009
prEN 50377-4-2:2008 – 8 –
103 3 Description
104 The SC-APC connector is a single position plug connector set of plug/adaptor/plug configuration
105 characterised by a cylindrical, spring loaded butting ferrule of 2,5 mm nominal diameter and a latched push-
106 pull coupling mechanism. The optical alignment mechanism of the connectors is of a resilient sleeve style.
107 3.1 Plug
108 The plug features a cylindrical zirconia ceramic ferrule and a push-pull coupling mechanisms. The plug
109 housing has a single male key, which is used to limit the relative rotation between mated plugs. A cover (dust
110 cap) to protect the ferrule end face when the connector is in the unmated condition shall be provided.
111 3.2 Adaptor
112 The adaptor has a zirconia ceramic resilient alignment sleeve. The mounting style is a rectangular flange –
113 simplex.
114 Covers (dust caps) are provided to protect each port of the adaptor.
115 3.3 Materials
116 Materials which are not specified or which are not specifically described are left to the discretion of the
117 manufacturer.
118 3.4 Dimensions
119 Outline dimensions and other dimensions necessary to ensure intermateability or which affect performance
120 are specified. All other dimensions are left to the discretion of the manufacturer. Where the mating face limit
121 dimensions are not in agreement with an EN Interface Standard this is clearly stated.
122 3.5 Colour and marking
123 Marking of the product shall be in the following order of precedence:
124 – identification of manufacturer;
125 – manufacturing date code: year/week;
126 – manufacturers part number;
127 – variant identification number.
128 The preferred colour scheme is given in Table 2.
129 Table 2 – Preferred colour scheme
Delatch housing SC-APC plug Adaptor
Green, RAL 6018 Green, RAL 6018
130
Draft for Enquiry
---------------------- Page: 10 ----------------------
oSIST prEN 50377-4-2:2009
– 9 – prEN 50377-4-2:2008
131 4 Variants
132 4.1 Terminated plug
133 The defined fibre/cable variants are given in Table 3.
134 Table 3 – Plug variants
E N 5 0 3 7 7 - 4 - 2 - * * - * 1
Variant No. Fibre/cable Structure Note
mm
01 0,7 - 1,4 Buffered fibre 8 degrees
02 2,0 ± 0,2 Reinforced cable 8 degrees
03 Reinforced cable 8 degrees
2,5 ± 0,2
04 Reinforced cable 8 degrees
2,8 ± 0,2
05 Reinforced cable 8 degrees
3,0 ± 0,2
06 Reinforced cable 8 degrees
3,2 ± 0,2
Variant Attenuation grade
B B
C C
Code Return loss grade
1 1
135
136 4.2 Adaptor
137 The defined adaptor variants are given in Table 4.
138 Table 4 – Adaptor variants
E N 5 0 3 7 7 - 4 - 2 - * * *
Variant number Format
A01 Rectangular flange - simplex
139
Draft for Enquiry
---------------------- Page: 11 ----------------------
oSIST prEN 50377-4-2:2009
prEN 50377-4-2:2008 – 10 –
140 5 Dimensional requirements
141 5.1 Outline dimensions
142 5.1.1 Plug
143 Variant No. 01
BH
144
145 Variant No. 02 – 06
BF
146
147
Ref. Dimensions Note
min. mm max.
BH 58
BF 60
148 Figure 1 – Outline dimensions – Plug
Draft for Enquiry
---------------------- Page: 12 ----------------------
oSIST prEN 50377-4-2:2009
– 11 – prEN 50377-4-2:2008
149 5.1.2 Adaptor
150 Variant No. A01
151
Ref. Dimensions Note
min. mm max.
AF 21,5 22,5
AG 17,9 18,1
AH 12,6 13,0
AI 9,2 9,4
AJ 2,2 2,4 Diameter
AK 27,0 27,8
AL 2,8 3,2
AM 14,4 16,4
AN 7,7 8,0
AO 1,7 2,0See NOTE
NOTE Panel thickness should be between 1,0 mm and 1,5 mm, without any
colour coatings.
152 a) Adaptor
153
Ref. Dimensions Note
min. mm max.
W 2,4 2,6 Diameter
X 13,1 13,5
Y 17,9 18,1
Z 9,5 10,0
154 b) Panel cut out
155 Figure 2 – Outline dimensions
Draft for Enquiry
---------------------- Page: 13 ----------------------
oSIST prEN 50377-4-2:2009
prEN 50377-4-2:2008 – 12 –
156 5.2 Mating face and other limit dimensions
157 5.2.1 Plug
CROSS SECTION A-A'
158
159
160 Notes: See following page.
161 Figure 3 – Plug mating face and other limit dimensions
Draft for Enquiry
---------------------- Page: 14 ----------------------
oSIST prEN 50377-4-2:2009
– 13 – prEN 50377-4-2:2008
References Dimensions Note
min. mm max.
A 2,498 5 2,499 5 Diameter, 4, 5
B 4,80 4,90 Diameter
C 6,80 7,40
D 4,90 5,30
E 6,70 6,80
F 19 23 Degree
G 25 35 Degree
H 7,15 7,50 See NOTE 1, NOTE 2
β 89,5 90,5Degree
I 0,80 1,20
J 5,30 5,50
K -0,10 0,05 See NOTE 3
L 2,11 2,50
M 2,00 2,80
N 6,60 6,80
O 1,60 1,80
P 8,89 8,99
Q 0,80 1,00
R 7,29 7,39
rS 0,80 0,90 Radius
T 4,05 4,15
U 5,40 5,60
V 0 0,50
cBC 0 0,50 Chamfer
EA 90 Degree, see NOTE 6
NOTE 1 Ferrule compression force shall be from 7,8 N to 11,8 N when the ferrule is compressed to a point
where H is 7,00 mm ± 0,10 mm.
NOTE 2 This value shows the dimension after the ferrule is polished and in the unmated condition.
NOTE 3 The negative dimension refers to the position of the inside bottom plane in the direction towards the
rear of the connector relative to the mechanical reference plane.
NOTE 4 Envelope condition in accordance with ISO 8015.
NOTE 5 Surface roughness R ≤ 0,1 µm.
a
NOTE 6 The dimension EA is defined as an angle between two planes: One plane, plane A, through the axis
of the ferrule and the axis of symmetry of the guide key. The other plane, plane B, passes through the axis of
the ferrule and the normal to the angle PC reference plane.
162 Figure 3 – Plug mating face and other limit dimensions (continued)
Draft for Enquiry
---------------------- Page: 15 ----------------------
oSIST prEN 50377-4-2:2009
prEN 50377-4-2:2008 – 14 –
163 5.2.2 Adaptor
MECHANICAL REFERENCE PLANE
164
165 Adaptor
166 Notes: See following page
167 Figure 4 – Adaptor mating face and other limit dimensions
Draft for Enquiry
---------------------- Page: 16 ----------------------
oSIST prEN 50377-4-2:2009
– 15 – prEN 50377-4-2:2008
References Dimensions Note
min. mm max.
A Diameter, see NOTE
B 4,69 4,79 Diameter
D 4,9 5,5
H 6,9 7,1
I 0,4 0,8
J 5,51 5,9
K 0,06 1
L 1,9 2,1
O 2,0 2,2
P 9,0 9,1
R 7,4 7,5
S 1,0 1,1
T 3,8 4,04
U 5,0 5,4 Degree
V 0,6 1,6
AA 27 33 Degree
AB 0,8 1,0
AC 0,4 0,6
AD 0,7 0,8
AE 0,4 0,6
BA 5,4 5,6
BB 10,8 11,2
NOTE The connector alignment feature is a zirconia ceramic resilient sleeve which is free to move in the
adaptor. Alternative materials may be used for the sleeve that have directly compatible materials properties
with zirconia. The gauge retention force shall be measured with 2 gauge pins, each inserted to the middle of
the alignment feature. The gauge retention force shall be from 2,0 N to 5,9 N, for the extraction of one gauge.
The surface roughness of the inside of the alignment sleeve shall be Ra < 0,3 µm.
168 Figure 4 – Adaptor mating face and other limit dimensions (continued)
Draft for Enquiry
---------------------- Page: 17 ----------------------
oSIST prEN 50377-4-2:2009
prEN 50377-4-2:2008 – 16 –
169 5.2.3 Ferrule endface geometry after termination
170
171
172 Figure 5 – Ferrule endface geometry after termination
173
174 Table 5 – Optical interface parameter values for APC ferrules
References Parameter values Notes
min. max.
J 0,8 1,7 Diameter, mm
K N/A 1,8 mm
Draft for Enquiry
---------------------- Page: 18 ----------------------
oSIST prEN 50377-4-2:2009
– 17 – prEN 50377-4-2:2008
H F
G
175
176 Figure 6 – Positioning of fibre core
177
178 Table 6 – Geometrical parameters
References Parameter values Notes
Grade B Grade C
min. max. min. max.
A -100 NOTE 1 -100 NOTE 1 NOTE 3, NOTE 4, nm
B 5 12 5 12 Radius, NOTE 3, mm
C 0 50 0 50 NOTE 2, dome offset µm
D 2,498 5 2,499 5 2,498 5 2,499 5 Diameter, mm
E 0 0,2 0 0,2 Degrees
F 0 0,001 0 0,001 5 Radius, mm
G 0 0,000 3 0 0,000 3 Radius, mm
H 0 50 0 50 Degrees
I 8 8 Degrees
J 0,8 1,7 0,8 1,7 Diameter, mm
K - 1,8 - 1,8 mm
NOTE 1 Contact force 4,9 N minimum. The given endface conditions are for 3 mol% Yttria stabilised Zirconia ZrO ferrule with grain
2
size < 0,35 µm, a Young’s modulus between (200 ± 20) GPa and a Poisson ratio between 0,30 to 0,31 which is normative for this
specification.
()−0,795 6 2 6 2 3
A =1988 ⋅B − B ⋅10 + B ⋅10 − C ⋅10 − 60
Maximum
NOTE 2 The dome offset is defined as a distance between the ferrule centre and the vertex of the spherically polished endface relative
to the angled PC reference plane. This dimension shall be measured in both extreme positions of the ferrule when the ferrule is rotated
in the connector.
NOTE 3 The radius and fibre undercut shall be measured in all directions over a diameter of 0,25 mm.
NOTE 4 The negative value refers to fibre protrusion.
179
Draft for Enquiry
---------------------- Page: 19 ----------------------
oSIST prEN 50377-4-2:2009
prEN 50377-4-2:2008 – 18 –
Allowable Undercut for 4,9 N contact force and Apex Offset = 50 µ m
300
250
200
150
100
50
0
024 68 10 12 14
Endface Radius [mm]
180
()−0,795 6 2 6 2 3
181 A =1988 ⋅B − B ⋅10 + B ⋅10 − C ⋅10 − 60
Maximum
182 Figure 7 – Ferrule end face geometry – Allowable undercut
183 The figure and the values above define the parameters that must be met by each individual plug in order to
184 ensure that the specified random attenuation performance grade will be met in any connection.
Draft for Enquiry
Allowable Undercut [nm]
---------------------- Page: 20 ----------------------
oSIST prEN 50377-4-2:2009
– 19 – prEN 50377-4-2:2008
185 5.2.4 Control of fibre core position and axis
186 F
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.