Bsi bs en 61754 28 2012

BSI Standards PublicationFibre optic interconnecting devices and passive components — Fibre optic connector interfaces Part 28: Type LF3 connector family... EN 61754-28:2012 E ICS 33.1

BSI Standards Publication

Fibre optic interconnecting devices and passive

components — Fibre optic connector interfaces

Part 28: Type LF3 connector family

A list of organizations represented on this committee can be obtained onrequest to its secretary.

This publication does not purport to include all the necessary provisions of acontract Users are responsible for its correct application

© The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 73812 8

Amendments issued since publication

Amd No Date Text affected

NORME EUROPÉENNE

CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members

Ref No EN 61754-28:2012 E

ICS 33.180.20

English version

Fibre optic interconnecting devices and passive components -

Fibre optic connector interfaces - Part 28: Type LF3 connector family

(IEC 61754-28:2012)

Dispositifs d'interconnexion et composants

passifs à fibres optiques -

Interfaces de connecteurs pour fibres

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 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 CEN-CENELEC Management Centre 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom

Foreword

The text of document 86B/3387/FDIS, future edition 1 of IEC 61754-28, prepared by SC 86B, "Fibre optic interconnecting devices and passive components", of IEC TC 86, "Fibre optics" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61754-28:2012

The following dates are fixed:

• latest date by which the document has

to be implemented at national level by

publication of an identical national

standard or by endorsement

(dop) 2013-03-19

• latest date by which the national

standards conflicting with the

document have to be withdrawn

(dow) 2015-06-19

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights

Endorsement notice

The text of the International Standard IEC 61754-28:2012 was approved by CENELEC as a European Standard without any modification

In the official version, for Bibliography, the following note has to be added for the standard indicated:

ISO 8015 NOTE Harmonized as EN ISO 8015

IEC 60794-2-50 - Optical fibre cables -

Part 2-50: Indoor cables - Family specification for simplex and duplex cables for use in terminated cable assemblies

EN 60794-2-50 -

CONTENTS

INTRODUCTION 5

1 Scope 6

2 Normative reference 6

3 Description 6

4 Interfaces 6

Annex A (informative) Panel cutout 18

Bibliography 19

Figure 1 – Simplex plug interface 8

Figure 2 – APC/PC endface geometry 9

Figure 3 – Duplex plug interface 9

Figure 4 – Simplex adaptor interface 12

Figure 5 – Duplex adaptor interface 12

Figure 6 – Pin gauge for adaptor 14

Figure 7 – Simplex active device receptacle interface 15

Figure 8 – Duplex active device receptacle interface 15

Figure A.1 – Simplex and duplex adaptor cutout 18

Table 1 – Intermateability between plugs, adaptors and active device within the IEC 61754-28 family 7

Table 2 – Dimensions of plug connector interface (1 of 2) 10

Table 3 – Ferrule grade table for plug connector interface 11

Table 4 – Dimensions of the simplex and duplex adaptor interface 13

Table 5 – Gauge pin dimensions 14

Table 6 – Dimensions of active device interface 16

Table 7 – Grade table 17

Table A.1 – Dimensions of the simplex and duplex adaptor cutout 18

INTRODUCTION

The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed that compliance with this document may involve the use of a patent concerning IEC 61754-28

IEC takes no position concerning the evidence, validity and scope of this patent right The holder of this patent right has assured the IEC that he/she is willing to negotiate licences under reasonable and non - discriminatory terms and conditions with applicants throughout the world

In this respect, the statement of the holder of this patent right is registered with IEC Information may be obtained from:

ISO (www.iso.org/patents) and IEC (http://www.iec.ch/tctools/patent_decl.htm) maintain on-line data bases of patents relevant to their standards Users are encouraged to consult the data bases for the most up to date information concerning patents

FIBRE OPTIC INTERCONNECTING DEVICES

AND PASSIVE COMPONENTS – FIBRE OPTIC CONNECTOR INTERFACES – Part 28: Type LF3 connector family

IEC 60794-2-50, Optical fibre cables – Part 2-50: Indoor cables – Family specification for

simplex and duplex cables for use in terminated cable assemblies

3 Description

The parent connector for the type LF3 connector family is a simplex connector which is characterized by a 1,25 mm nominal ferrule diameter It includes a push-click-pull coupling mechanism, which is spring-loaded relative to the ferrule in the direction of the optical axis The optical alignment mechanism of the connectors is a rigid bore sleeve or a resilient sleeve style

Drawings and dimensions provided consist of those minimum features that are functionally critical during the mating and unmating sequences of the plug with its adapter/receptacle counterpart component

4 Interfaces

The pages that follow define the standard interfaces for the type LF3 connector family

This standard contains the following standard interfaces:

61754-28-1 Simplex plug connector PC-interface

61754-28-2 Simplex adaptor interface

61754-28-3 Simplex active device receptacle interface

61754-28-4 Duplex plug connector PC-interface

61754-28-5 Duplex adaptor interface

61754-28-6 Duplex active device receptacle interface

61754-28-7 Simplex plug connector interface – APC 8°

61754-28-8 Duplex plug connector interface – APC 8°

The standards in Table 1 are intermateable

Table 1 – Intermateability between plugs, adaptors and active device within the IEC 61754-28 family

Plugs Adaptors Active device

61754-28-2 61754-28-5 61754-28-3 61754-6

Figure 1 gives an example of a simplex plug interface.

Body EA

Plane A

EB AO

AR AF

AQ

Protection cap

H2A

H1F

b O

Q

B Optical reference plane

Ferrule

Plane B Top view with protection cap opened (APC type)

Mechanical reference plane

Mechanical reference plane

IEC 719/12

Figure 1 – Simplex plug interface

Figure 2 gives an example of endface geometry

A BG

BI

BI

A BG

IEC 720/12

Figure 2 – APC/PC endface geometry

Figure 3 gives an example of the duplex plug interface

Table 2 gives dimensions of the plug connector interface

Table 2 – Dimensions of plug connector interface (1 of 2)

Reference Dimensions

mm

Remarks

Minimum Basic Maximum

Table 2 (2 of 2)

a Dimension B is given for a plug endface when not mated The ferrule is movable by a certain axial compression force, with direct contacting endface, and therefore dimension B is variable Ferrule compression force shall be 5,0 N to 6,0 N when the position of the optical datum target, dimension B is moved to the range 9,8 mm to 10,0

mm Forces are for buffered fibre only; different cord constructions can result in higher forces (see IEC 2-50)

60794-b These dimensional requirements apply to the finished ferrule, after all polishing procedures have been completed

c Dimension BI is the radius of the polished ferrule end face

d Dimension EA is defined as an angle between two planes: One plane, plane A, passes through the axis of the ferrule and the axis of symmetry of the key of the angled end face connector plug The other plane, plane B, passes through the axis of the ferrule and the plane normal to the angled PC reference plane

Table 3 gives a ferrule grade table for plug connector interfaces

Table 3 – Ferrule grade table for plug connector interfaces

Figures 4 and 5 give examples of simplex and duplex adaptor interfaces

plane

AQ a

plane

Mechanical reference plane

b

b

C D E

IEC 723/12

Figure 5 – Duplex adaptor interface

Table 4 gives dimensions of the simplex and duplex adaptor interface

Table 4 – Dimensions of the simplex and duplex adaptor interface

Figure 6 gives an example of a pin gauge for an adaptor

Chamfer or radius

IEC 724/12 NOTE 1 Surface roughness RZ = 0,2 µm

Figure 6 – Pin gauge for adaptor

Table 5 gives gauge pin dimensions

Table 5 – Gauge pin dimensions

Figures 7 and 8 give examples of simplex and duplex active device receptacle interfaces

plane

AQ a

plane Mechanical reference plane

b

b

C D E

∅0,05 B

∅0,05 B a

IEC 726/12

Figure 8 – Duplex active device receptacle interface

Table 6 gives dimensions of active device interface

Table 6 – Dimensions of active device interface

Table 7 gives the grade table.

Table 7 – Grade table

a The connector alignment feature is a rigid bore sleeve The dimension A shall be tested using two pin gauges One pin gauge has the pin gauge grade number 1 µm larger than the maximum value of dimension A, the other pin gauge has the number 1 µm smaller than the minimum value of dimension A The appropriate pin gauge shall be selected from the pin gauge grade table

b The connector alignment feature is a resilient (split) alignment sleeve The feature must accept a pin gauge completely to the left side of dimension G with a force of 1,0 N to 2,5 N Insert the pin gauge completely, from only one side, the connector side of the active device receptacle interface The pin gauge is defined in Figure 6

c Add grade number to the interface reference number

Reference Dimensions Remarks

Minimum Basic Maximum

a May not be necessary for all versions

NOTE Panel thickness should be between 1,2 and 1,6 mm

Bibliography

ISO 8015, Geometrical product specifications (GPS) – Fundamentals – Concepts, principles

and rules

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