SIST EN 50377-7-2:2004

Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications -- Part 7-2: LC-PC duplex terminated on IEC 60793-2 category B1.1 singlemode fibre

1.1   Product definition
This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements which a terminated and assembled singlemode resilient alignment sleeve LC-PC duplex connector set (plug / adaptor / plug) must meet in order for it to be categorised as an European Standard product.
Since different variants and grades of performance are permitted, product marking details are given in 3.5.
1.2   Intermateability
Although all products conforming to the requirements of this European 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.
In all cases, the intermating of plug variants having different attenuation or return loss grades will result in an uncertain level of random attenuation performance. When intermating plug variants having different return loss grades, the resulting level of return loss can not be assured to be any better than the worst return loss grade.
Similarly, the intermating of a grade P plug with a grade Q plug will result in an uncertain level of random attenuation performance.
A simplex plug can be connected in a duplex adaptor without degrading the level of performance.
1.3   Operating environment
The tests selected combined with the severities and durations are representative of an external weather protected environment defined by:
•   ES 200 671   External weather protected environment defined by ES 300 019 classes 3.3, 3.4 and 3.5;
•   EN 61753-2-1   Category U: uncontrolled environment
1.4   Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with this European 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 European 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 7-2: Bauart LC-PC-Duplex zum Anschluss an Einmodenfasern der Kategorie B1.1 nach IEC 60793-2

Produktdefinition
Die vorliegende Europäische Norm enthält die Anfangsanforderungen, die am Anfang der Lebensdauer beste¬henden Maßanforderungen, optischen und mechanischen Anforderungen sowie Umgebungsanfor-derungen an das Betriebsverhalten, die ein angeschlossener und zusammengesteckter Einmoden-Duplex-Steckverbinder¬satz vom Typ LC-PC mit elastischer Ausrichtungshülse (Stecker/Adapter/Stecker) erfüllen muss, um als EN-Standardprodukt eingestuft zu werden.
Da unterschiedliche Bauarten und Klassen des Betriebsverhaltens zulässig sind, sind Einzelheiten über die Produktkennzeichnung in Abschnitt 3.5 enthalten.
1.2   Steckbarkeit
Obwohl alle Produkte, die den Anforderungen dieser Europäischen Norm entsprechen, gepaart werden können, sind nur die Pegel der zufälligen Dämpfung nach Tabelle 1 gewährleistet. Das Ziel ist die Einhaltung dieser Anforderungen unabhängig von der (den) Herstellungsquelle(n) des Produkts.
Auf jeden Fall ergibt die Paarung von Steckervarianten mit unterschiedlichen Klassen der Dämpfung und Rück¬flussdämpfung einen undefinierten Pegel der zufälligen Dämpfung. Wenn Steckervarianten mit unter-schied¬lichen Klassen der Rückflussdämpfung gepaart werden, kann nur der Pegel der schlechtesten Rück-fluss¬dämpfung gewährleistet werden.
In gleicher Weise ergibt die Paarung von Steckern der Klasse P mit Steckern der Klasse Q einen undefi-nierten Pegel der zufälligen Dämpfung.
Ein Simplex-Stecker kann mit einem Duplex-Stecker gepaart werden, ohne dass sich das Betriebsverhalten verschlechtert.
1.3   Betriebsumgebung
Die ausgewählten Prüfungen zusammen mit den Prüfschärfen und Prüfdauern gelten für wettergeschützte Umgebungen im Freien nach:
–   ES 200 671   Wettergeschützte Umgebungen im Freien nach ES 300 019, Klassen 3.3, 3.4 und 3.5;
–   EN 61753 2 1   Kategorie U: unkontrollierte Umgebung
1.4   Zuverlässigkeit
Obwohl die Lebensdauererwartung für das Produkt in dieser Umgebung 20 Jahre beträgt, garantiert die Ein¬haltung dieser Europäischen Norm nicht die Zuverlässigkeit des Produkts. Diese sollte mit einem anerkannten Zuverlässigkeitsbewertungsprogramm bewertet werden.
1.5   Qualitätssicherung
Die Einhaltung dieser Europäischen Norm sichert nicht die Beständigkeit der Herstellung des Produkts. Diese sollte mit einem anerkannten Qualitätssicherungsprogramm aufrechterhalten werden

Jeux de connecteurs et composants d'interconnexion à utiliser dans les systèmes de communication par fibres optiques - Spécifications de produits -- Partie 7-2: Type duplex LC-PC câblé sur une fibre unimodale de catégorie B1.1 selon la CEI 60793-2

1.1   Définition de produit
La présente Norme européenne contient les prescriptions de performances initiales, dimensionnelles de début de vie, optiques, mécaniques et environnementales auxquelles un jeu de connecteurs (fiche/adaptateur/fiche) de type LC-PC duplex à manchon d'alignement élastique unimodal raccordé et assemblé doit satisfaire afin d'être classé comme produit entrant dans une Norme européenne.
Dans la mesure où différentes variantes et différentes classes de performance sont autorisées, les détails de marquage de produits sont donnés en 3.5.
1.2   Compatibilité d'accouplement
Bien que tous les produits conformes aux prescriptions de la présente Norme européenne s'accouplent entre eux, le niveau obtenu pour la performance d'affaiblissement aléatoire sera uniquement assuré conformément au Tableau 1. Le but est que cela se vérifie indépendamment des sources de fabrication du produit.
Dans tous les cas, l'accouplement des variantes de fiche ayant différentes classes d'affaiblissement ou d’affaiblissement de réflexion aboutit à un niveau incertain de performance d'affaiblissement aléatoire. Lorsque l’on accouple des variantes de fiche ayant différentes classes d’affaiblissement de réflexion, on ne peut pas assurer que le niveau d’affaiblissement de réflexion qui en résulte soit meilleur que celui de la classe d’affaiblissement de réflexion la moins bonne.
De même, l’accouplement d’une fiche de classe P à une fiche de classe Q aboutit à un niveau incertain de performance d'affaiblissement aléatoire.
Une fiche simplex peut être connectée à un adaptateur duplex sans dégradation du niveau de performance.
1.3   Environnement d'exploitation
Les essais sélectionnés combinés avec les sévérités et les durées sont représentatifs d'un environnement extérieur protégé contre les intempéries défini par
•   ES 200 671   Environnement extérieur protégé contre les intempéries défini par les classes 3.3, 3.4 et 3.5 de la ES 300 019;
•   EN 61753-2-1   Catégorie U: environnements non contrôlés.
1.4   Fiabilité
Alors que l'espérance de vie utile prévue du produit dans cet environnement est de 20 ans, la conformité à cette Norme européenne ne garantit pas la fiabilité du produit. Il convient que celle-ci soit estimée en utilisant un programme reconnu d'évaluation de la fiabilité.
1.5   Assurance de la qualité
La conformité avec la présente Norme européenne ne garantit pas la cohérence de fabrication du produit. Il convient qu’elle soit maintenue en utilisant un programme d'assurance de la qualité reconnu.

Konektorski pribor in povezovalne komponente za uporabo v komunikacijskih sistemih z optičnimi vlakni – Specifikacije izdelka – 7-2. del: Tip LC-PC dupleks, zaključen na enorodnem vlaknu kategorije B1.1 po IEC 60793-2*

General Information

• Status: Published
• Publication Date: 30-Sep-2004
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: iTEL - Communication cables
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-2004
• Due Date: 01-Oct-2004
• Completion Date: 01-Oct-2004
• Ref Project: EN 50377-7-2:2004 - Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications - Part 7-2: LC-PC duplex terminated on IEC 60793-2 category B1.1 singlemode fibre

Standards Content (Sample)

SLOVENSKI SIST EN 50377-7-2:2004

STANDARD
oct 2004
Konektorski pribor in povezovalne komponente za uporabo v komunikacijskih
sistemih z optičnimi vlakni – Specifikacije izdelka – 7-2. del: Tip LC-PC
dupleks, zaključen na enorodnem vlaknu kategorije B1.1 po IEC 60793-2*
Connector sets and interconnect components to be used in optical fibre
communication systems – Product specifications – Part 7-2: LC-PC duplex
terminated on IEC 60793-2 category B1.1 singlemode fibre
ICS 33.180.20 Referenčna številka
SIST EN 50377-7-2:2004(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD EN 50377-7-2
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2004

ICS 33.180.20


English version


Connector sets and interconnect components
to be used in optical fibre communication systems –
Product specifications
Part 7-2: LC-PC duplex terminated on IEC 60793-2
category B1.1 singlemode fibre


Jeux de connecteurs et composants Steckverbindersätze
d'interconnexion à utiliser und Verbindungsbauelemente
dans les systèmes de communication für Lichtwellenleiter-
par fibres optiques – Datenübertragungssysteme –
Spécifications de produits Produktnormen
Partie 7-2: Type duplex LC-PC câblé Teil 7-2: Bauart LC-PC-Duplex
sur une fibre unimodale de catégorie B1.1 zum Anschluss an Einmodenfasern
selon la CEI 60793-2 der Kategorie B1.1 nach IEC 60793-2




This European Standard was approved by CENELEC on 2003-12-02. 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

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


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 50377-7-2:2004 E

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EN 50377-7-2:2004 - 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 Unique Acceptance Procedure and was approved by
CENELEC as EN 50377-7-2 on 2003-12-02.

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) 2004-12-01

- latest date by which the national standards conflicting
 with the EN have to be withdrawn (dow) 2006-12-01

__________

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- 3 - EN 50377-7-2:2004

Connector sets and interconnect components to be used in optical fibre communication systems –
Product specifications
Part 7-2: LC-PC duplex terminated on IEC 60793-2 category B1.1 singlemode fibre
Description  Performance
Coupling mechanism: latch push-pull Application: IEC 61753-2-1 category U and ES
 200-671 environments (see 1.3)

Configuration: plug/adaptor/plug Attenuation grade: P: <0,35 dB mean.
(Random mate)   <1,0 dB for > 97 % of measurements
 Q: <0,30 dB mean.
Fibre category: IEC 60793-2-50    <0,60 dB for > 99 % of measurements
                    type B1.1 Return loss grade:
(Random mate) 2: ≥ 45 dB
Cable type see Clause 4
3: ≥ 35 dB

4: ≥ 26 dB
Normative references
EN 61300 series Fibre optic interconnection devices and passive components - Basic test and
measurement procedures
EN 61753-1-1 Performance standard - Part 1: General guidance
EN 61754-20 Basic standard for interface dimensions - Part 20: Type LC connector family
EN 186000 Generic specification - Connector sets for optical fibres and cables
IEC 60794-2 Optical fibre cables - Part 2: Product specifications (indoor cable)
ES 200 671 Passive optical components; Optical fibre connectors for single – Mode optical
fibre communications system; Common requirements and conformance testing
ES 300 019 series Equipment Engineering (EE); Environmental conditions and environmental tests
for telecommunications equipment.
Outline and maximum dimensions:
57 Ref. 76 Ref.
32 Max. 51 Max.
R25 Min. R25 Min.

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EN 50377-7-2:2004 - 4 -
Contents

1 Scope.5
1.1 Product definition .5
1.2 Intermateability.5
1.3 Operating environment .5
1.4 Reliability.5
1.5 Quality assurance.5

2 Normative references.6

3 Description .7
3.1 Plug.7
3.2 Adaptor.7
3.3 Materials .7
3.4 Dimensions.7
3.5 Colour and marking .7

4 Variants.8
4.1 Terminated plug.8
4.2 Adaptor.8
4.3 Identification of variants.8

5 Dimensional requirements.10
5.1 Outline dimensions .10
 5.1.1 Plug variants.10
 5.1.2 Adaptor variants.11
5.2 Mating face and other limit dimensions .11
 5.2.1 Plug.11
 5.2.2 Ferrule endface geometry after termination.14
 5.2.3 Positioning of fibre core .15
 5.2.4 Control of fibre axis.16
 5.2.5 Adaptor.17
 5.2.6 Pin gauge for adaptor .19

6 Tests.20
6.1 Sample size.20
6.2 Test and measurement methods.20
6.3 Test sequence.20
6.4 Pass/Fail criteria.20

7 Test report.20

8 Testing requirements .20
8.1 Dimensional and marking requirements .20
8.2 Optical Performance requirements .21
8.3 Mechanical Performance requirements .23
8.4 Environmental Performance requirements .27

Annex A (informative) Reference connector details .31
Annex B (informative) Sample size and product requirements .31
Bibliography.32

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- 5 - EN 50377-7-2:2004
1 Scope

1.1 Product definition

This European Standard contains the initial, start of life dimensional, optical, mechanical and
environmental performance requirements which a terminated and assembled singlemode resilient
alignment sleeve LC-PC duplex connector set (plug / adaptor / plug) must meet in order for it to be
categorised as an European Standard product.

Since different variants and grades of performance are permitted, product marking details are given
in 3.5.

1.2 Intermateability

Although all products conforming to the requirements of this European 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.

In all cases, the intermating of plug variants having different attenuation or return loss grades will
result in an uncertain level of random attenuation performance. When intermating plug variants
having different return loss grades, the resulting level of return loss can not be assured to be any better
than the worst return loss grade.

Similarly, the intermating of a grade P plug with a grade Q plug will result in an uncertain level of
random attenuation performance.

Table 1 - Ensured level of random attenuation

Plug variant/attenuation grade P Q
P P P
Q P Q

A simplex plug can be connected in a duplex adaptor without degrading the level of performance.

1.3 Operating environment

The tests selected combined with the severities and durations are representative of an external weather
protected environment defined by:

• ES 200 671 External weather protected environment defined by ES 300 019 classes 3.3, 3.4
and 3.5;

• EN 61753-2-1 Category U: uncontrolled environment

1.4 Reliability

Whilst the anticipated service life expectancy of the product in this environment is 20 years,
compliance with this European 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 European Standard does not guarantee the manufacturing consistency of the
product. This should be maintained using a recognised quality assurance programme.

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EN 50377-7-2:2004 - 6 -
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
EN 61300 Series Fibre optic interconnection devices and passive components - Basic test and
measurement procedures
EN 61300-2-1 Part 2-1: Tests - Vibration (sinusoidal)
EN 61300-2-2 Part 2-2: Tests - Mating durability
EN 61300-2-4 Part 2-4: Tests - Fibre/cable retention
EN 61300-2-5 Part 2-5: Tests - Torsion
EN 61300-2-6 Part 2-6: Tests - Tensile strength of coupling mechanism
EN 61300-2-7 Part 2-7: Tests - Bending moment
EN 61300-2-12 Part 2-12: Tests - Impact
EN 61300-2-17 Part 2-17: Tests - Cold
EN 61300-2-18 Part 2-18: Tests - Dry heat - High temperature endurance
EN 61300-2-19 Part 2-19: Tests - Damp heat (steady state)
EN 61300-2-21 Part 2-21: Tests – Damp heat (cycling)
EN 61300-2-22 Part 2-22: Tests - Change of temperature
EN 61300-2-23 Part 2-23: Tests - Undercut
EN 61300-2-26 Part 2-26: Tests – Salt mist
EN 61300-2-27 Part 2-27: Tests - Dust
EN 61300-2-42 Part 2-42: Tests - Static side load for connectors
EN 61300-3-4 Part 3-4: Examinations and measurements - Attenuation
EN 61300-3-6 Part 3-6: Examinations and measurements - Return loss
EN 61300-3-34 Part 3-34: Examinations and measurements - Attenuation of random mated
connectors
EN 61753-1-1 Fibre optic interconnecting devices and passive components performance
standard - Part 1-1: General and guidance – Interconnecting devices
(connectors)
IEC 60794-2 Optical fibre cables - Part 2: product specifications
IEC 61754-20 Basic standard for interface dimensions - Part 20: Type LC connector family
ES 200 671 Passive optical components; optical fibre connectors for singlemode optical
fibre communications system; common requirements and conformance testing
ES 300 019 Series Equipment Engineering (EE); Environmental conditions and environmental
tests for telecommunications equipment.

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- 7 - EN 50377-7-2:2004
3 Description

The LC-PC duplex connector is a single position plug connector set of plug adaptor plug
configuration characterised by cylindrical, spring loaded butting ferrules of 1,25 mm nominal
diameter and a latched push-pull coupling mechanism. The optical alignment mechanism of the
connectors is of a resilient sleeve style.

3.1 Plug

The plug features a cylindrical zirconia ceramic ferrule and a latched push-pull mechanism. It has a
single male key which is used to limit and may be used to orientate, the relative rotation between
mated connectors.

A cover (dust cap) to protect the ferrule endface when the connector is in the unmated condition shall
be provided.

Alternative materials may be used for the ferrule that have directly compatible material properties to
zirconia but the endface and performance requirements must be met under all conditions

3.2 Adaptor

The adaptor has a zirconia ceramic resilient alignment sleeve. The mounting style is duplex
rectangular flange equipped with snap-latches.

Covers (dust caps) shall be provided to protect each port of the adaptor.

Alternative materials may be used for the sleeve that have directly compatible material properties to
zirconia but the performance requirements must be met under all conditions

3.3 Materials

Materials which are not specified or which are not specifically described are left to the discretion of
the manufacturer.

3.4 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.

3.5 Colour and marking

Marking of the product shall be in accordance with 2.6.2 of EN 186 000-1 in the following order of
precedence:

a) identification of manufacturer;
b) manufacturing date code : year/week;
c) manufacturers part number;
d) variant identification number.

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EN 50377-7-2:2004 - 8 -
The following colour scheme is preferred:

Table 2 - Preferred colour scheme

Delatch housing Adaptor
Blue Blue

NOTE  The preferred Blue is RAL 5015.


4 Variants

4.1 Terminated plug

The following variants are permitted:

Table 3 - Plug fibre/cable variants with fibre category IEC 60793-2 Type B1.1

Variant number Fibre/Cable Structure
∅mm
P01 0,7 - 1,4 Buffered fibre
P02 Reinforced cable
1,6 ± 0,2
P03 2,0 ± 0,2 Reinforced cable
P04 Reinforced cable
2,5 ± 0,2
Q01 0,7 - 1,4 Buffered fibre
Q02 Reinforced cable
1,6 ± 0,2
Q03 2,0 ± 0,2 Reinforced cable
Q04 Reinforced cable
2,5 ± 0,2

4.2 Adaptor

The following variants are permitted:

Table 4 - Adaptor variants

Variant number Format
A01 Rectangular flange - duplex

4.3 Identification of variants

The identification numbers for the fibre/cable variants and adaptor variants with fibre category
IEC 60793-2 type B1.1 are given in Tables 5, 6 and 7.

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- 9 - EN 50377-7-2:2004
Table 5 – Identification plug fibre/cable, P grade variants
with fibre category IEC 60793-2 type B1.1

Variant number Fibre type Performance Identification number
grade
(return loss)
P01 B1.1 2 EN50377-7-2-P01-2
P01 B1.1 3 EN50377-7-2-P01-3
P01 B1.1 4 EN50377-7-2-P01-4
P02 B1.1 2 EN50377-7-2-P02-2
P02 B1.1 3 EN50377-7-2-P02-3
P02 B1.1 4 EN50377-7-2-P02-4
P03 B1.1 2 EN50377-7-2-P03-2
P03 B1.1 3 EN50377-7-2-P03-3
P03 B1.1 4 EN50377-7-2-P03-4
P04 B1.1 2 EN50377-7-2-P04-2
P04 B1.1 3 EN50377-7-2-P04-3
P04 B1.1 4 EN50377-7-2-P04-4


Table 6 - Identification plug fibre/cable, Q grade variants
with fibre category IEC 60793-2 Type B1.1

Variant number Fibre type Performance grade Identification number
(return loss)
Q01 B1.1 2 EN50377-7-2-Q01-2
Q01 B1.1 3 EN50377-7-2-Q01-3
Q01 B1.1 4 EN50377-7-2-Q01-4
Q02 B1.1 2 EN50377-7-2-Q02-2
Q02 B1.1 3 EN50377-7-2-Q02-3
Q02 B1.1 4 EN50377-7-2-Q02-4
Q03 B1.1 2 EN50377-7-2-Q03-2
Q03 B1.1 3 EN50377-7-2-Q03-3
Q03 B1.1 4 EN50377-7-2-Q03-4
Q04 B1.1 2 EN50377-7-2-Q04-2
Q04 B1.1 3 EN50377-7-2-Q04-3
Q04 B1.1 4 EN50377-7-2-Q04-4


Table 7 - Adaptor variants

Variant number Identification number
A01 EN50377-7-2-A01

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EN 50377-7-2:2004 - 10 -
5 Dimensional requirements

5.1 Outline dimensions

5.1.1 Plug variants

Variant number: P01/Q01

PC
PA
PB



Ref. Dimensions Notes
Min. mm Max.
PA  - 30
PB  - 32
PC  - 9,4


Variant number: P02 - P04, Q02 - Q04

CC
CA
CB



Ref. Dimensions Notes
Min. mm Max.
CA - 49
CB - 51
CC - 10,5

Figure 1 - Outline dimensions - Plug

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- 11 - EN 50377-7-2:2004
5.1.2 Adaptor variants

Variant number: A01

DH
Panel cutout
See NOTE
DB
DG
DF
DK
DE
DI
DJ DC DD
DA



Ref. Dimensions Notes
Min.     mm     Max.
DA 25,0 30,0
DB 13,0 13,1
DC 13,0 13,1
DD 13,2 13,4
DE 13,2 13,4
DF - 15,3
DG - 10,1
DH - 3,8
DI 2,0 1,5
DJ 12,6 12,9
DK 13,15 13,3

NOTE  Panel cutout: panel thickness should be between 1,2 and 1,7 mm

Figure 2 - Outline dimensions - Adaptor

5.2 Mating face and other limit dimensions

5.2.1 Plug

NOTE 1 NOTE 3
B
NOTE 2
A

NOTE 1 Optical reference plane
NOTE 2 Optical datum target
NOTE 3 Mechanical reference plane

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EN 50377-7-2:2004 - 12 -
Figure 3a - Plug connector interface reference planes


- B -
C
⊕ 0,05 M   B
- NOTE 2
a
D
Q
E
T
R
⊕ 0,05   M  B  P
S
AA
O
b
X
U
W
AD
M
Z
N
AB
b
AC
a

V



F
- A -
J
H
1
 I
L
Y
G
⊕ 0,025  M    B  A
- NOTE 1
H
2
Section a-a Section b-b
NOTE 1  Optical reference plane
NOTE 2 Mechanical reference plane

Figure 3b - Plug connector interface

- C -
⊕ ∅ 0,20     CM M
K

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- 13 - EN 50377-7-2:2004
Figure 3c - Duplex plug interface

Dimensions of the plug connector interface

Ref. Dimensions Notes
Min. mm Max.
A 1,248 5 1,249 5 Diameter
B 10,3 10,51
C 4,2 4,4
D 3,2 3,35
E 2,2 2,4
F 0,3 0,5Radius
G 4,88 5,00Ferrule extension
H 4,42 4,523
1
H 4,42 4,523
2
I 3,0 3,2Diameter
J H/2 H/2
K 6,25 Basic dimension, 4
L 0,0 0,2degrees, 3
M 1,07 -
N 0,56 -
O 1,1 1,3
P 21 -Degrees, typical
Q 8,5 8,7
R 0,4 0,6Radius
S 30 -Degrees, typical
T 1,4 1,6
U 2,7 2,9
V 12,2 -
W 14 -Degrees, typical
X 0,5 0,7
Y 3,3 3,5
Z 5,6 5,7
AA 5,2 5,4
AB 0,3 0,5
AC 1,3 1,5
AD 1,2 1,4
NOTE 1  Dimensions B and G are 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 9,6 mm
to 10,2 mm.

NOTE 2  These dimensional requirements apply to the finished ferrule, after all polishing procedures have been
completed.

NOTE 3  Taper, dimension L, is applied to the surfaces associated with dimension/feature H and H
1 2.

NOTE 4  The connector plugs shall be capable of floating between K and K as defined by the positional
min max
tolerancing.

---------------------- Page: 14 ----------------------

EN 50377-7-2:2004 - 14 -
5.2.2 Ferrule endface geometry after termination

NOTE 7
BK
DETAIL A
BG
A BF
NOTE 3
BI

Ref. Dimensions Notes
Min. mm Max.
BF 7 25 1,5
BG 0,60 0,85 Diameter
BI 32,5 37,5 Degree
BK -0,000 1 Figure 4b 2,4

Figure 4a - Ferrule endface geometry - After termination
Allowable undercut BK versus ferrule endface radius BF
140
120
100
80
60
40
20
0
7 8 9 1011 121314 151617 181920 212223 2425
Ferrule Endface Radius BF (mm)

For the value of BF from 10 mm ≤ BF ≤ 25 mm the undercut BK is:
3 2
BK = - 0,02(BF ) + 1,3(BF ) – 31BF + 325.
For the value BF from 7 mm ≤ BF ≤ 10 mm, BK = 0,000 125 mm maximum allowable undercut.

Figure 4b - Ferrule endface geometry - After termination

NOTE 1  Dome eccentricity of the spherically polished endface shall be less than 50 µm.

NOTE 2  The negative dimension refers to fibre protrusion.

NOTE 3  A chamfer or radius is allowed to a maximum depth of 0,5 mm from the ferrule endface.


Allowable undercut BK (nm)

---------------------- Page: 15 ----------------------

- 15 - EN 50377-7-2:2004
NOTE 4  Dimension BK shall be measured in accordance with EN 61300-3-23
NOTE 5  The radius shall be measured over a diameter of 0,25 mm.

NOTE 6  Visual examination with x200 magnification of fibre end surface after cleaning, no defects dirt or residues shall be
visible in the 10 µm diameter core zone.

NOTE 7  Fibre endface

5.2.3 Positioning of fibre core

The shaded areas in the figure below denote the target area in which the fibre core must be positioned
during the plug termination process. To obtain the performances indicated by grade P or Q, the fibre
core must be positioned within the shaded segments shown.

Key
PB PB
PC
PA
PD



   Variant P   Variant Q


Ref. Dimensions Notes
Min. mm Max.
 Grade P Grade Q
PA - 0,000 8 Diameter, see 5.2.4
PB - 50degree,
PC - 0,001 5 See 5.2.4
PD - 0,003 0 Diameter, see 5.2.4



NOTE  Grade Q does not imply the use of tuning or define the number of tuning positions.

Figure 5 - Positioning of fibre core to ferrule centre and connector key

---------------------- Page: 16 ----------------------

EN 50377-7-2:2004 - 16 -
5.2.4 Control of fibre axis

Figure 6 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).

Fibre axis
Ferrule axis
τ


1.5
Fibre angle τ
1.4
(degree)
1.3
1.2
1.1
1
NOTE 2
0.9
0.8
0.7
0.6
0.5 NOTE 1
0.4
0.3
0.2
0.1
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8

Fibre core offset a (µm)

2  
 ) 
2
2
2 π τ
2W W () 2a
 N W W 
1 1 2
 
1 2
− +
 

IL (dB) = −10log *
e
2    
 
   2 2 2 2
2 2 λ  +   + 
 W W   W W 
 +   
W W
  1 2 1 2
   
 
1 2
  

W is mode field radii (µm), i = 1, 2
i
(Calculation for the above curve is done with W = 4,45 µm; W = 4,75 µm)
1 2
N is refractive index between the endfaces (in this case it's equal with the refractive index of the core)
1
a is fibre core offset (µm)
τ is fibre angle (radians)
λ is wavelength (Calculation for the above curve is done with 1 310 nm)

NOTE 1  For reference connector to reference connector (IL ≤ 0,15 dB).
NOTE 2  For reference connector to connector under test (IL ≤ 0,5 dB).
NOTE 3  The graph shows the worst case situation of maximum and minimum mode field diameter mismatch and represents
the allowed fibre angle and eccentricity to be achieved after termination.
Figure 6 - Allowable angle of fibre axis versus position of fibre core

---------------------- Page: 17 ----------------------

- 17 - EN 50377-7-2:2004
5.2.5 Adaptor


OPTICAL
b
- A -
REFERENCE
AP
C
PLANE A
⊕ 0,05    C
M
AO
AQ D
E
⊕ 0,05 M   C A
AR
a
AS
J
a
b


- NOTE 2
NOTE 1
B
O
AT
P
⊥ ∅ 0,025  A
F
AV
AU
H
1
I
A
M
⊕ 0,05  B  A  AW AX
L
N
H
2
G
M A
⊕ 0,05    B
- B -
⊕ ∅ 0,05  B A
Section a-a - C -
⊥ ∅ 0,025 A Section b-b

NOTE 1  Optical reference plane

NOTE 2  Mechanical reference plane

Figure 7a - Adaptor interface

---------------------- Page: 18 ----------------------

EN 50377-7-2:2004 - 18 -


- D -

⊕ ∅ 0,10   M   D M
K


Figure 7b - Duplex adaptor interface

Dimensions of the adaptor connector interface

Ref. Dimensions Notes
Min. mm Max.
A - - Diameter 1, 2, 3
B 9,9 10,0
C 4,5 -
D 3,4 3,5
E 2,6 2,7
F 0,2 0,3 Radius
G 4,0 4,1
H 4,65 4,75
1
H 4,65 4,75
2
I 2,87 2,97 Diameter
J 2,29 Basic dimension
K 6,25 Basic dimension
L 0,0 0,2 Degrees, 4
M 1,0 1,1
N 0,5 0,6
O - 1,2
P 15 - Degrees, typical
AO 11,1 12,8
AP 14,5 14,7
AQ 2,2 2,4 Radius
AR 1,1 1,2
AS 6,6 6,8
AT 0,6 0,7
AU 1,8 2,0
AV 1,0 1,1
AW 1,4 1,5 Diameter
AX 1,9 -

---------------------- Page: 19 ----------------------

- 19 - EN 50377-7-2:2004
NOTE 1  The connector alignment feature is a resilient (split) alignment sleeve, and the sleeve may be either fixed or
floating. For a fixed sleeve the positional tolerance of dimension I applies to both A and I dimensions. For a floating
sleeve, a gauge pin inserted in the sleeve must be capable to move freely into a position such that it is coincident with
datum B. Dimension A defines the inner diameter of the alignment feature.

NOTE 2  The connector alignment feature is a resilient (split) alignment sleeve. The feature must accept a pin gauge to
the centre of the adaptor with a force of 1,0 N to 2,5 N under the condition that another pin gauge is inserted into the
feature from the other side until both pin gauges butt against each other. The pin gauge shall be in accordance with 4.2.6.
The centre of the adaptor is defined by the left side position of dimension B.

NOTE 3  Each of the units in the duplex adaptor shall comply with all of dimensions of Figures 7a and 7b.

NOTE 4  Taper, dimension L, is applied to the surfaces associated with dimension/feature H and H .
1 2


5.2.6 Pin gauge for adaptor
CN
Ra
CK
E
NOTE 2


Ref. Dimensions Notes
Min.       mm                   Max.
CK 1,248 8 1,249 2 Diameter, 1
CN 7 15
Ra 0,000 16 0,000 25 2

NOTE 1  A chamfer or radius is allowed to a
...