SIST EN 50516-2-1:2012

Industrial connector sets and interconnect components to be used in optical fibre control and communication systems - Product specifications - Part 2-1: Type ODVA PC industrial terminated on EN 60793-2-10 category A1a and A1b multimode fibre to meet the requirements of category I (industrial environments) as specified in EN 50173-1 and IEC/PAS 61753-X-Y

1.1   Product definition This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements that an ODVA connector terminated with cylindrical zirconia PC ferrules with one side protected by an industrial housing, an adaptor fitted with resilient alignment sleeve and patchcord shall meet in order for it to be categorised as an EN standard product. The product is rated IP67. Since different variants are permitted, product marking details are given in 3.6. 1.2   Intermateability Products conforming to the requirements of this specification will intermate and give the specified level of random attenuation and random return loss performance, provided that the same fibre type is used. The intention is that this will be true irrespective of the manufacturing source(s) of the product. 1.3   Operating environment The tests selected combined with the severities and durations, specified as Category I, are intended to reflect, although they do not necessarily satisfy all the requirements of the boundary conditions of M3I3C3E3. 1.4   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. 1.5   Quality assurance Compliance with this specification does not guarantee the manufacturing consistency of the product. This should be maintained using a recognised quality assurance programme.

Industrie-Steckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter-Steuerungs- und Datenübertragungssysteme - Produktnormen - Teil 2-1: Industriesteckverbinder der Bauart ODVA-PC zum Anschluss an Mehrmodenfasern der Typen A1a und A1b nach EN 60793-2-10 für die Kategorie I (Industrieumgebung) nach den Festlegungen in EN 50173-1 und IEC 61753-1-3

Jeux de connecteurs industriels et composants d’interconnexion à utiliser dans les systèmes de communication et de commande par fibres optiques - Spécifications de produit - Partie 2 1: Type ODVA PC industriel câblés sur fibre multimodale des catégories A1a et A1b de la norme EN 60793-2-10 pour satisfaire aux exigences de la catégorie I (environnements industriels) comme cela est spécifié dans les normes EN 50173-1 et IEC 61753-1-3

Sestavi industrijskih konektorjev in povezovalnih komponent za uporabo v krmilnih in komunikacijskih sistemih z optičnimi kabli - Specifikacije izdelka - 2-1. del: Industrijski tip ODVA PC, zaključen z večrodnim optičnim vlaknom kategorij A1a in A1b po EN 60793-2-10, ki ustreza zahtevam kategorije I (industrijska okolja), kot je specificirana v EN 50173-1 in IEC/PAS 61753-X-Y

Ta evropski standard vsebuje začetne zahteve za dimenzije, optične in mehanske zahteve ter zahteve za okoljsko učinkovitost, ki jim mora ustrezati konektor ODVA, zaključen z valjasto cirkonijevo tulko PC in na eni strani zaščiten z industrijskih ohišjem, adapter s prožno obojko in priključni kabel, da bi bili opredeljeni kot izdelek standarda EN. Proizvod je ocenjen kot IP67. Ker so dovoljene različice, so podrobnosti o označevanju izdelka navedene v 3.6.

General Information

• Status: Published
• Public Enquiry End Date: 28-Feb-2010
• Publication Date: 22-Nov-2011
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: iTEL - Communication cables
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 18-Nov-2011
• Due Date: 23-Jan-2012
• Completion Date: 23-Nov-2011
• Ref Project: EN 50516-2-1:2011 - Industrial connector sets and interconnect components to be used in optical fibre control and communication systems - Product specifications - Part 2-1: Type ODVA PC industrial terminated on EN 60793-2-10 category A1a and A1b multimode fibre to meet the requirements of category I (industrial environments) as specified in EN 50173-1 and IEC 61753-1-3

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2012
6HVWDYLLQGXVWULMVNLKNRQHNWRUMHYLQSRYH]RYDOQLKNRPSRQHQW]DXSRUDERY
NUPLOQLKLQNRPXQLNDFLMVNLKVLVWHPLK]RSWLþQLPLNDEOL6SHFLILNDFLMHL]GHOND
GHO,QGXVWULMVNLWLS2'9$3&]DNOMXþHQ]YHþURGQLPRSWLþQLPYODNQRPNDWHJRULM
$DLQ$ESR(1NLXVWUH]D]DKWHYDPNDWHJRULMH,LQGXVWULMVNDRNROMD
NRWMHVSHFLILFLUDQDY(1LQ,(&3$6;<
Industrial connector sets and interconnect components to be used in optical fibre control
and communication systems - Product specifications - Part 2-1: Type ODVA PC
industrial terminated on EN 60793-2-10 category A1a and A1b multimode fibre to meet
the requirements of category I (industrial environments) as specified in EN 50173-1 and
IEC/PAS 61753-X-Y
Industrie-Steckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter-
Steuerungs- und Datenübertragungssysteme - Produktnormen - Teil 2-1:
Industriesteckverbinder der Bauart ODVA-PC zum Anschluss an Mehrmodenfasern der
Typen A1a und A1b nach EN 60793-2-10 für die Kategorie I (Industrieumgebung) nach
den Festlegungen in EN 50173-1 und IEC 61753-1-3
Ta slovenski standard je istoveten z: EN 50516-2-1:2011
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50516-2-1
NORME EUROPÉENNE
November 2011
EUROPÄISCHE NORM
ICS 33.180.20
English version
Industrial connector sets and interconnect components to be used in
optical fibre control and communication systems -
Product specifications -
Part 2-1: Type ODVA PC industrial terminated on EN 60793-2-10 category
A1a and A1b multimode fibre to meet the requirements of category I
(industrial environments) as specified in EN 50173-1 and IEC 61753-1-3

Industrie-Steckverbindersätze und
Verbindungsbauelemente für
Lichtwellenleiter-Steuerungs- und
Datenübertragungssysteme -
Produktnormen -
Teil 2-1: Industriesteckverbinder der
Bauart ODVA-PC zum Anschluss an
Mehrmodenfasern der Typen A1a und
A1b nach EN 60793-2-10 für die
Kategorie I (Industrieumgebung) nach den
Festlegungen in EN 50173-1 und
IEC 61753-1-3
This European Standard was approved by CENELEC on 2011-07-19. 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 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, 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 50516-2-1:2011 E
Contents
1 Scope . 7
1.1 Product definition . 7
1.2 Intermateability . 7
1.3 Operating environment . 7
1.4 Reliability . 7
1.5 Quality assurance . 7
2 Normative references . 7
3 Description . 9
3.1 General . 9
3.2 Plug . 9
3.3 Adaptor . 9
3.4 Materials . 9
3.5 Dimensions . 9
3.6 Colour and marking . 10
4 Variants . 11
4.1 Terminated plug . 11
4.2 Adaptor . 11
4.3 Identification of variants . 11
5 Dimensional requirements . 12
5.1 Outline dimensions . 12
5.2 Mating face and other limit dimensions . 15
6 Tests . 23
6.1 Sample size . 23
6.2 Test and measurement methods . 24
6.3 Test sequence . 24
6.4 Pass/fail criteria . 24
7 Test report . 24
8 Product qualification requirements . 24
8.1 Dimensional and marking requirements. 24
8.2 Optical performance requirements . 25
8.3 Mechanical performance requirements . 26
8.4 Environmental performance requirements . 30
Annex A (informative) Attenuation against reference . 33
A.1 Test details . 33
A.2 Reference LC connector details . 33
Annex B (normative) Sample size and product sourcing requirements . 34
Annex C (normative) Requirements for launch condition (Encircled flux) . 35
Annex D (informative) Details of environmental classification out of EN 50173-1 (MICE) . 36
Annex E (informative) Details of sample construction . 37
Annex F (informative) Patent statement concerning ODVA industrial connectors . 38
Bibliography . 40

– 3 – EN 50516-2-1:2011
Figures
Figure 1 – Outline dimensions – Plug . 12
Figure 2 – Outline dimensions – Fixed adaptor . 13
Figure 3 – Cut out for fixed adaptor mounting Variant 01 . 13
Figure 4 – Cut out for fixed adaptor mounting Variant 02 . 14
Figure 5 – Plug mating face and other limit dimensions . 15
Figure 6 – Variant Bm2, LC connector interface. 16
Figure 7 – Ferrule endface geometry – After termination . 17
Figure 8 – Positioning of fibre core . 17
Figure 9 – Ferrule endface geometry – Allowable undercut . 19
Figure 10 – Variant 01, fixed adapter . 20
Figure 11 – Variant M 01, LC adapter interface . 21
Figure 12 – Pin gauge for adaptor . 23
Figure E.1 – Example of test specimen for Tests 1 – 13 . 37
Figure E.2 – Example of test specimen for Tests 14 – 19 . 37
Tables
Table 1 – Preferred colour scheme . 10
Table 2 – Terminated plug – Plug variants . 11
Table 3 – Terminated plug – Adaptor variants . 11
Table 4 – Identification of plug variants . 11
Table 5 – Identification of adaptor variants . 11
Table 6 – Geometrical parameters . 18
Table 7 – Optical performance requirements . 25
Table 8 – Mechanical performance requirements . 26
Table 9 – Environmental performance requirements . 30
Table A.1 – Attenuation measurement: Test details . 33
Table B.1 – Sample size and product sourcing requirements . 34
Table C.1 – Requirements for 50 µm fibre core diameter at 850 nm . 35
Table D.1 . 36

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 50516-2-1 on 2011-07-19.
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) 2012-07-19
– latest date by which the national standards conflicting

with the EN have to be withdrawn
(dow) 2014-07-19
CENELEC draws attention to the fact that it is claimed that compliance with this document may involve the
use of a patent concerning ODVA industrial connectors (see declaration in Annex F).
All potential patent issues concerning this product are covered by IEC patent statement (see
EN 61754-24-21).
__________
– 5 – EN 50516-2-1:2011
Introduction
CENELEC draws attention to the fact that it is claimed that compliance with this document may involve the
use of a patent concerning ODVA industrial connectors given in Annex F.
CENELEC takes no position concerning the evidence, validity and scope of this patent right.
The holder of this patent right has assured CENELEC 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 CENELEC.
Information may be obtained from:
The Siemon Company
101 Siemon Company Drive
Watertown, CT 06795
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights other than those identified above. CENELEC shall not be held responsible for identifying any or all such
patent rights.
Industrial connector sets and interconnect components to be used in optical fibre control and communication
systems – Product specifications
Part 2-1: Type ODVA PC industrial terminated on EN 60793-2-10 category A1a and A1b multimode fibre to meet the
requirements of category I (industrial environments) as specified in EN 50173-1 and IEC 61753-1-3
Description Performance
Coupling mechanism: Twist and lock with sealing Application: For the use in category I
(industrial environment)
Configuration: Plug / adaptor / with one side Attenuation Bm
of the configuration having a (random mate): Mean ≤ 0,35 dB and
seal and a protective shell ≤ 0,60 dB for ≥ 97 % of
measurements
Fibre category: EN 60793-2-10
Type A1a
Cable type: See Table 3 Return loss: 2m
≥ 20 dB
Related documents:
EN 50173-1 Information technology – Generic cabling systems – Part 1: General requirements
EN 50173-3 Information technology – Generic cabling systems – Part 3: Industrial premises
EN 60529 Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 60794-3 Optical fibre cables – Part 3: Sectional specification – Outdoor cables (IEC 60794-3)
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 61754-20 Fibre optic connector interfaces – Part 20: Type LC connector family (IEC 61754-20)
1)
Fibre optic interconnecting devices and passive components – Performance standard –
IEC 61753-1-3
Part 1-3: General and guidance for single-mode fibre optic connector performance for harsh
industrial operating conditions
Outline and maximum dimensions: ODVA connector plug with protective shell in sealed adaptor.

1)
At draft stage.
– 7 – EN 50516-2-1:2011
1 Scope
1.1 Product definition
This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental
performance requirements that an ODVA connector terminated with cylindrical zirconia PC ferrules with one
side protected by an industrial housing, an adaptor fitted with resilient alignment sleeve and patchcord shall
meet in order for it to be categorised as an EN standard product. The product is rated IP67.
Since different variants are permitted, product marking details are given in 3.6.
1.2 Intermateability
Products conforming to the requirements of this specification will intermate and give the specified level of
random attenuation and random return loss performance, provided that the same fibre type is used. The
intention is that this will be true irrespective of the manufacturing source(s) of the product.
1.3 Operating environment
The tests selected combined with the severities and durations, specified as Category I, are intended to
reflect, although they do not necessarily satisfy all the requirements of the boundary conditions of M I C E .
3 3 3 3
1.4 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.
1.5 Quality assurance
Compliance with this specification does not guarantee the manufacturing consistency of the product.
This should be maintained using a recognised quality assurance programme.
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 60068-2-60 Environmental testing – Part 2: Tests – Test Ke: Flowing mixed gas corrosion test
(IEC 60068-2-60)
EN 60529 Degrees of protection provided by enclosures (IP Code) (IEC 60529)
EN 60874-1 Connectors for optical fibres and cables – Generic specification (IEC 60874-1)
EN 61280-1-4 Fibre optic communication subsystem test procedures – Part 1-4: General
communication subsystems – Light source encircled flux measurement method
(IEC 61280-1-4)
EN 61300-1 Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures – Part 1: General and guidance (IEC 61300-1)
EN 61300-2-1 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 (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 61300-2-9 Part 2-9: Tests – Shock (IEC 61300-2-9)
EN 61300-2-10 Part 2-10: Tests – Crush resistance (IEC 61300-2-10)
EN 61300-2-12 Part 2-12: Tests – Impact (IEC 61300-2-12)
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 61300-2-34 Part 2-34: Tests – Resistance to solvents and contaminating fluids of interconnecting
components and closures (IEC 61300-2-34)
EN 61300-2-35 Part 2-35: Tests – Cable nutation (IEC 61300-2-35)
EN 61300-2-46 Part 2-46: Tests – Damp heat cyclic (IEC 61300-2-46)
EN 61300-3-1 Part 3-1: Examinations and measurements – Visual examination (IEC 61300-3-1)
EN 61300-3-6 Part 3-6: Examinations and measurements – Return loss (IEC 61300-3-6)
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 61300-3-35 Part 3-35: Examinations and measurements – Fibre optic connector endface visual
and automated inspection (IEC 61300-3-35)
EN 61754-20 Fibre optic connector interfaces – Part 20: Type LC connector family (IEC 61754-20)

– 9 – EN 50516-2-1:2011
3 Description
3.1 General
The ODVA industrial connector is a duplex plug connector set of plug / adaptor / plug configuration with one
side having a protective shell characterised by two cylindrical, spring loaded butting ferrules of 1,25 mm
nominal diameter and a twist and lock coupling mechanism. The optical alignment mechanism of the
connectors is of a resilient sleeve style.
3.2 Plug
The plug consists of an ODVA connector interface and a housing part. These two parts have to be in the
defined position to each other (see Figure 1 and Figure 3) to guarantee the correct mating. The sealing is
made between an o-ring (placed on the housing) and the adaptor frame. A cover (dust cap) to protect the
ferrule endface when the plug is in the unmated condition shall be provided. The sealing shall also be
guaranteed between the connector and the dust cap.
The plug features two cylindrical full zirconia ferrules and a push-pull coupling mechanisms. Alternative
materials may be used for the ferrule that have directly compatible material properties as zirconia, but the
endface and performance requirements shall be met under all conditions.
The plug has three male keys to provide the orientation to the duplex connector in relation with the adaptor.
3.3 Adaptor
The adaptor consists of an ODVA adaptor as it is described in this specification and a duplex LC adaptor in
mounting frame. The sealing is made between the connector housing and the adaptor mounting frame.
The mounting frame itself shall be mounted onto an equipment (e.g. on a sealed box) with a gasket to
guarantee the sealing between the adaptor and the whole equipment used. Preferred cut out dimensions to
maintain sealing are given in Figure 3 and Figure 4.
At the rear of the adaptor, there are two LC simplex connectors.
The adaptor consists of two zirconia ceramic resilient alignment sleeves and two push-pull coupling
mechanisms, one for each sleeve. Alternative materials may be used for the sleeve that have directly
compatible material properties as zirconia but the performance requirements shall be met under all
conditions.
The adaptor housing has three female keys.
Covers (dust caps) shall be provided to protect each duplex 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 EN interface standard, this is clearly stated.

3.6 Colour and marking
Marking of the product shall be in accordance with EN 60874-1, in the following order of precedence:
a) identification of manufacturer;
b) manufacturing date code: year / week;
c) manufacturers part number;
d) variant identification number.
The preferred colour scheme is given in Table 1.
Table 1 – Preferred colour scheme
De-latch housing ODVA plug Adaptor
Black Black
NOTE The preferred black is RAL 9005. Other not listed parts could also be of the
preferred colour to show the colour scheme.

– 11 – EN 50516-2-1:2011
4 Variants
4.1 Terminated plug
The following cable variants are permitted:
Table 2 – Terminated plug – Plug variants
Variant number Cable diameter Structure Note
Bm2m 5,0 mm – 8,5 mm Reinforced duplex cable The roundness shall be
< 0,2 mm.
0,2 mm
4.2 Adaptor
The following variants are permitted:
Table 3 – Terminated plug – Adaptor variants
Variant number Format
01 Fixed adaptor
(mounting frame e.g. fixed on a
sealed box / sealed connector
outside)
02 Fixed D hole adaptor
4.3 Identification of variants
The identification numbers for the cable variants and adaptor variants are given in Tables 4 and 5.
Table 4 – Identification of plug variants
Variant number Identification number
Bm2m EN 50516-2-1-M01
Table 5 – Identification of adaptor variants
Variant number Identification number
01 EN 50516-2-1-01
02 EN 50516-2-1-02
5 Dimensional requirements
5.1 Outline dimensions
5.1.1 Plug
Variant No. Bm2
a) b)
Ref. Dimensions Note
min. mm max.
A 110
B 108
C 60 Nom: 52,3
D 30 30,3
E 6,25 Basic dimension
Figure 1 – Outline dimensions – Plug

– 13 – EN 50516-2-1:2011
5.1.2 Adaptor
Variant Fixed adaptor
a) b)
Ref. Dimensions Note
min. mm max.
A 32 35
B  Basic dim: 6,25
C 34 35
Figure 2 – Outline dimensions – Fixed adaptor
Variant 01 Fixed adaptor
Ref. Dimensions Note
min. mm max.
A1 26,6 27,7
A2 2,0 3,1
A3 0,5 1,6
A4 11,9 13,0
Figure 3 – Cut out for fixed adaptor mounting Variant 01

Variant 02 Fixed adaptor
Ref. Dimensions Note
min. mm max.
A1 28,4 28,6
A4 12,83 13,03
NOTE Panel cut out dimensions are for recommendation only.
Figure 4 – Cut out for fixed adaptor mounting Variant 02

– 15 – EN 50516-2-1:2011
5.2 Mating face and other limit dimensions
5.2.1 Plug
The mating face dimensions given in this European Standard are in accordance with EN 61754-20. They are
listed to illustrate the intermateability between LC plug and ODVA industrial plug against the ODVA adaptor.

a) b)
Ref. Dimensions Note
min. mm max.
A - 5,08
C 0,94 Nominal
D 1,04 1,30
E 16,8 18,1 Diameter
F 24,74 25,00 Diameter
G 14,88 Nominal
I 14,37 14,51
J 2,49 2,59 Diameter
M 239° 241° Degrees
N 119° 121° Degrees
O 4,65 Nominal
P 2,1 2,5 Gasket
Gasket, diameter,
Q 19,8 20,8
Note 4
Note 1, Note 2
R 10,1 10,7
and Note 3
NOTE 1 Ferrule compression force shall be from 5,0 N to 6,0 N when the ferrule is
compressed to a point where R is 9,4 mm to 10,0 mm. Forces are for buffered fibre only.
For different cord construction allow higher forces of 5,0 N to 7,0 N.
NOTE 2 This value shows the dimension after the ferrule is polished and in the
unmated condition.
NOTE 3 Mechanical reference plane.
NOTE 4 The sealing can be reached by different types of gaskets.
Figure 5 – Plug mating face and other limit dimensions

a) b)
c) Section A – A d) Section B – B

Ref. Dimensions Note
min. mm max.
A 6,25 Basic dimension
B 5,6 5,7
C 4,2 4,4
D - 1,0
E - 0,5
F 12,2 -
G 1,1 1,3
H 4,42 4,52
I 4,88 5,00 Diameter
J 3,3 3,5 Ferrule extension
K 0,3 0,5 Radius
L 3,2 3,35
M 10,3 10,5
O 2,29 Basic dimension
R 0,0 0,2 Degrees
Figure 6 – Variant Bm2, LC connector interface

– 17 – EN 50516-2-1:2011
5.2.2 Ferrule endface geometry and fibre core position after termination
D
C
B
A
J
No sharp
edge
K
Ferrule axis Fibre axis
E
a) b)
Figure 7 – Ferrule endface ge
...