1、BRITISH STANDARDBS EN 61754-5:2005Fibre optic connector interfaces Part 5: Type MT connector familyThe European Standard EN 61754-5:2005 has the status of a British StandardICS 33.180.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g5
2、5g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 61754-5:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 7 February 2006 BSI 7 February 2006ISBN 0 580 47768 1National forewordThis British Standar
3、d is the official English language version of EN 61754-5:2005. It is identical with IEC 61754-5:2005. It supersedes BS EN 61754-5:2002 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre optic interconn
4、ecting devices and passive components, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and Eu
5、ropean developments and promulgate them in the UK.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Cat
6、alogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its co
7、rrect application.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 11 and a back cover.The BSI copyright notice displayed in this document indicates
8、 when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD EN 61754-5 NORME EUROPENNE EUROPISCHE NORM December 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee f
9、r Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61754-5:2005 E ICS 33.180.20 Supersedes EN 61754-5:2001English version Fibre optic connect
10、or interfaces Part 5: Type MT connector family (IEC 61754-5:2005) Interfaces de connecteurs pour fibres optiques Partie 5: Famille de connecteurs de type MT (CEI 61754-5:2005) Steckgesichter von Lichtwellenleiter-Steckverbindern Teil 5: Steckverbinderfamilie der Bauart MT (IEC 61754-5:2005) This Eur
11、opean Standard was approved by CENELEC on 2005-10-01. 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 referenc
12、es 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 memb
13、er 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Ital
14、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of document 86B/2126/FDIS, future edition 2 of IEC 61754-5, prepared by SC 86B, Fibre optic interconnecting devices and passive compone
15、nts, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61754-5 on 2005-10-01. This European Standard supersedes EN 61754-5:2001. Specific technical changes involve addition of intermateability dimensions for alignment pins. The following dat
16、es 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) 2006-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2008-10-01 _ Endorsement notice The te
17、xt of the International Standard IEC 61754-5:2005 was approved by CENELEC as a European Standard without any modification. _ EN 61754-5:2005 2 3 EN 61754-5:2005 CONTENTS 1 Scope 4 2 Description.4 3 Interfaces.4 Figure 1 MT plug configuration and intermateability options5 Figure 2 MT alignment pin .6
18、 Figure 3 MT clamp spring 7 Figure 4 MT interface.8 Figure 5 Optical datum target location on plug endface 9 Figure 6 Gauge for guide pin holes 10 Figure 7 MT alignment pin hole gauge11 Table 1 Dimensions for MT alignment pin.6 Table 2 Dimensions for MT clamp spring7 Table 3 Dimensions for MT interf
19、ace8 Table 4 Dimensions for gauge for guide pin holes 10 Table 5 Dimensions for MT alignment pin hole gauge.11 EN 61754-5:2005 4 FIBRE OPTIC CONNECTOR INTERFACES Part 5: Type MT connector family 1 Scope This part of IEC 61754 defines the standard interface dimensions for the type MT family of connec
20、tors. 2 Description The parent connector for type MT connector family is a multiway plug connector characterized by a rectangular ferrule, typically 2,5 mm by 6,4 mm. The connector is aligned using two alignment pins and is normally secured by the use of a latching spring. Each connector interface m
21、ay be configured in a number of ways as shown in Figure 1. In the parent version, the two alignment pins are free to move within the plug bodies, and hence when unplugged may be located in either plug. The connector may also be configured with one pin fixed in each half (a hermaphroditic variant), o
22、r with both pins fixed in one plug (a plug and socket variant). Figure 1 shows which variants are intermateable as follows: a) parent plug to parent plug using two free pins; b) single pin plug to parent plug using one extra free pin; c) two pin plug to parent plug; d) single pin plug to single pin
23、plug. NOTE The two pin plug will not intermate with the single pin plug. Different connector interfaces will intermate and will correctly align the lower defined number of optical datum targets. 3 Interfaces This standard contains the following standard interface: Interface 5-1 MT interface dimensio
24、ns 5 EN 61754-5:2005 connecteur deux broches Parent plug Pin Parent plug Plug with two pins Plug with one pin Plug with one pin IEC 846/05 Figure 1 MT plug configuration and intermateability options EN 61754-5:2005 6 D C A B IEC 847/05 Figure 2 MT alignment pin Table 1 Dimensions for MT alignment pi
25、n Dimensions mm Reference Minimum Maximum A 0,697 0,699 B 0,2 0,4 C 0,2 0,5 Da10,8 11,2 aTypical dimensions. 7 EN 61754-5:2005 M1 M2 J1 J2 IEC 848/05 Figure 3 MT clamp spring Table 2 Dimensions for MT clamp spring Dimensions mm Reference Minimum Maximum M1 a14,7 15,7 M2 b15,8 16,2 J1 c3,1 3,3 J2 d3,
26、6 3,8 aLength in free condition. bCompression force for clamping condition shall be 6,8 N to 12,8 N when dimension M2 is between 15,8 mm and 16,2 mm. cDimensions for MT 2, 4, 8. d Dimensions for MT 10, 12. EN 61754-5:2005 8 Y XSee Note Guide pin holes B EACDIEC 849/05 NOTE For optical datum target l
27、ocations see Figure 5. Here, datum X is defined as the line passing through two pin hole centres and datum Y is defined as the line perpendicular to datum X and passing through the midpoint. Figure 4 MT interface Table 3 Dimensions for MT interface Dimensions mm Reference Minimum Maximum A a0,699 0,
28、701 B 7,9 8,1 Cb4,597 4,603 D 6,3 6,5 E 2,4 2,5 a Each guide pin hole must accept a gauge pin as shown in Figure 7 to a depth of 5,5 mm with a maximum force of 1,7 N. In addition, two guide pin holes of a plug must accept a gauge as shown in Figure 6 to a depth of 5,5 mm with a maximum force of 3,4
29、N. b Dimension C is defined as the distance between two pin hole centres. 9 EN 61754-5:2005 X X YYX X YX YYIEC 850/05 Figure 5 Optical datum target location on plug endface EN 61754-5:2005 10 0,001 W WAABABB0,0005UCDBC IEC 851/05 Figure 6 Gauge for guide pin holes Table 4 Dimensions for gauge for gu
30、ide pin holes Dimensions mm Reference Minimum Maximum A a0,6985 0,6990 C 4,5995 4,6005 D b6,3 6,5 U b2,4 2,5 BAa0,2 0,4 BBa0,2 0,5 BCa6,0 6,5 aFor two pins, surface roughness Rz= 0,1 m. bTypical dimensions. 11 EN 61754-5:2005 0,0005 D E C ABIEC 852/05 Figure 7 MT alignment pin hole gauge Table 5 Dim
31、ensions for MT alignment pin hole gauge Dimensions mm Reference Minimum Maximum A a0,6985 0,6990 B 0,2 0,4 C 0,2 0,5 D 10,8 11,2 E b6,0 aSurface roughness Rz= 0,1 m for the length of dimension E. bTypical dimensions. _ BS EN 61754-5:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards Inst
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