SIST EN 50377-17-2:2015

Connector sets and Interconnect components to be used in optical fibre communication systems - Product specifications - Part 17-2: Type FPFT (factory polished field terminated) simplex connector factory terminated with EN 60793-2-50 category B1.3 fibre and field mounted onto tight jacket cable containing IEC 60793-2-50 category B1.3 or B6a1 or B6a 2 single mode fibre (with restricted MFD), Category C

This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements that a Factory Polished Field Terminated (FPFT) single mode simplex connector set (plug adaptor plug) will meet in order for it to be categorised as an EN standard product.
The FPFT is designed for either fusion or mechanical splice methods. The performance is specified for the mated combination between a FPFT plug and an EN standardised plug from the EN 50377 series (configuration 1) or between two FTFP plugs (configuration 2). The fibre specified inside the FPFT plug in this European Standard is standard single mode fibre with low water peak as specified as B1.3, which is field mated to B1.3 fibre or bend insensitive single mode fibre specified as B6_a1 or B6_a2 in EN 60793 2 50. Mixing standard and bend insensitive fibres in a connection potentially causes a considerable intrinsic attenuation due to mode field diameter mismatch. These connectors are intended to be for an indoor installation. The connectors are terminated onto reinforced cables according to EN 60794 2 50 with outer jacket diameter greater than 0,9 and up to 3 mm.
Since different variants and grades of performance are permitted, product marking details are given in 3.6.

Steckverbindersätze und Verbindungselemente für Lichtwellenleiter-Datenübertragungssysteme - Produktnormen - Teil 17-2: Bauart FPFT- (vorpolierter und feldkonfigurierbarer) Simplex-Steckverbinder mit einer Faser der Kategorie B1.3 nach EN 60793-2-50 vorkonfektioniert und feldmontierbar an Einmodenfasern der Kategorien B1.3 oder B6a_1 oder B6a_2 (mit eingeschränktem MDF) nach IEC 60793-2-50 für Kategorie C

1.1   Produktdefinition
Diese Europäische Norm enthält die Anfangsanforderungen, die Maßanforderungen am Anfang der Lebensdauer, die optischen und mechanischen Anforderungen sowie die umweltbezogenen Anforderungen an das Betriebsverhalten, die ein vorpolierter und feldkonfigurierbarer (en: Factory Polished Field Terminated) FPFT-Simplex-Steckverbindersatz für Einmodenfasern mit einem Adapter (Steckverbinder/ Adapter/Steckverbinder) erfüllen muss, um als EN-Normprodukt eingestuft zu werden.
Der FPFT ist entweder für Schmelzspleiß- wie auch mechanische Spleißverfahren ausgelegt. Das Betriebs-verhalten ist definiert für die gesteckte Kombination zwischen FPFT-Steckverbinder und einem Stecker , der nach der Reihe EN 50377 genormt ist (Konfiguration 1) oder zwischen zwei FPFT-Steckverbindern (Konfiguration 2). Die nach dieser Europäischen Norm in dem FPFT-Steckverbinder definierte Faser ist eine genormte Einmodenfaser B1.3, die als Low-Water-Peak-Faser ausgeführt ist und mit einer Faser der Kategorie B1.3 oder einer biegeunempfindlichen Einmodenfaser wie B6_a1 oder B6_a2 nach EN 60793 2 50 verbunden ist. Die Kombination von genormten und biegeunempfindlichen Fasern in einer Verbindung kann eine beträchtliche inhärente Dämpfung aufgrund des nicht übereinstimmenden Modenfelddurchmessers verursachen. Diese Steckverbinder sind für die Innenraum-Installation bestimmt. Die Steckverbinder sind für zugentlastete Kabel nach EN 60794-2-50 mit einem Durchmesser des Außenmantels von 0,9 mm bis 3 mm konfektioniert.
Da verschiedene Varianten und Klassen des Betriebsverhaltens zulässig sind, werden in 3.6 die genauen Produktkennzeichnungen angegeben.
1.2   Steckbarkeit
1.2.1   Mechanische Steckbarkeit
Um die Anforderungen an das mechanische Betriebsverhalten zu erfüllen, muss der FPFT-Steckverbinder die optischen, umweltbezogenen und mechanischen Anforderungen, wie sie in dieser Europäischen Norm aufgeführt sind, erfüllen und der gesteckte Steckverbinder muss alle entsprechenden Anforderungen der Normenreihe EN 50377 für die Kategorie C erfüllen. Die Steckbarkeit zwischen dem FPFT-Steckverbinder und seinem Gegenstück entsprechend der Norm EN 50377 kann nur sichergestellt werden, wenn beide Steckverbinder die gleiche Produktspezifikation nach EN 50377 für die Maße der mechanischen Steck-verbinder-Schnittstellen und die Anforderungen an die Endflächengeometrie erfüllen.
1.2.2   Optische Steckbarkeit
In den Produkspezifikationen nach EN 50377 wird das Betriebsverhalten von zwei zufällig gepaarten Steckverbindern berechnet, an die Einmodenfasern mit dem ungünstigsten MFD angeschlossen sind. Der in den Fasernormen (z. B. für B1.3-Fasern) festgelegte MFD-Bereich bei 1 310 nm beträgt 8,0 µm bis 10,1 µm, der eine ungünstigste inhärente Dämpfung von 0,22 dB verursacht. Dennoch wird in der Reihe der Produktnormen EN 50377 der MFD bei 1 310 nm von 8,9 µm bis 9,5 µm begrenzt. Um Leistungswerte für zufällig gesteckte Paarungen zu erhalten, wird in dieser Europäischen Norm der gesamte MFD-Bereich für biegeunempfindliche Fasen, z B. Fasern der Kategorie B6a bei 1 310 nm auf 8,5 µm bis 9,5 µm begrenzt. Dies verursacht bei ungünstigsten Bedingungen eine inhärente Dämpfung von 0,05 dB.
1.3   Betriebsumgebung
Die ausgewählten Prüfungen gelten in Verbindung mit den Prüfschärfen und Dauern für Umgebungen der Kategorie C nach EN 61753-1. Die FPFT-Steckverbinder werden an zugentlastete LWL-Kabel mit einem Außendurchmesser von 0,9 mm bis 3 mm angeschlossen.
1.4   Zuverlässigkeit
Obwohl die geschätzte Lebensdauer des Produktes in dieser Umgebung 20 Jahre beträgt, garantiert die Übereinstimmung mit dieser Europäischen Norm nicht die Zuverlässigkeit des Produktes. Diese sollte mit einem anerkannten Programm zur Zuverlässigkeitsbewertung bestimmt werden.
1.5   Qualitätssicherung
(...)

Jeux de connecteurs et composants d'interconnexion destinés à être utilisés dans les systèmes de communication par fibres optiques - Spécifications de produits - Partie 17-2 : Connecteur simplex de type FPFT (poli en usine et monté sur le terrain) raccordé en usine à une fibre de la catégorie B1.3 selon l'EN 60793-2-50 et monté sur le terrain sur un câble renforcé contenant une ou des fibre(s) unimodale(s) de catégorie B1.3 ou B6_a1 ou B6_a2 selon l’IEC 60793-2-50, (à MFD réduit),Catégorie C

Konektorski sestavi in povezovalne komponente za optične komunikacijske sisteme - Specifikacije izdelka - 17-2. del: Simpleksni konektor tipa FPFT (tovarniško poliran, terensko spajanje) s tovarniško priključenim optičnim vlaknom vrste EN 60793-2-50, kategorija B1.3, in terensko spojen z enorodnim optičnim vlaknom (z omejenim MFD) kategorije C vrste IEC 60793-2-50, kategorija B1.3 ali B6a1 ali B6a2

General Information

• Status: Published
• Publication Date: 10-Jun-2015
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 28-Jan-2015
• Due Date: 04-Apr-2015
• Completion Date: 11-Jun-2015
• Ref Project: EN 50377-17-2:2015 - Connector sets and Interconnect components to be used in optical fibre communication systems - Product specifications - Part 17-2: Type FPFT (factory polished field terminated) simplex connector factory terminated with EN 60793-2-50 category B1.3 fibre and field mounted onto reinforced cable containing IEC 60793-2-50 category B1.3 or B6a1 or B6a 2 singlemode fibre (with restricted MFD), category C

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 50377-17-2:2015
01-julij-2015
.RQHNWRUVNLVHVWDYLLQSRYH]RYDOQHNRPSRQHQWH]DRSWLþQHNRPXQLNDFLMVNH
VLVWHPH6SHFLILNDFLMHL]GHONDGHO6LPSOHNVQLNRQHNWRUWLSD)3)7
WRYDUQLãNRSROLUDQWHUHQVNRVSDMDQMHVWRYDUQLãNRSULNOMXþHQLPRSWLþQLP
YODNQRPYUVWH(1NDWHJRULMD%LQWHUHQVNRVSRMHQ]HQRURGQLP
RSWLþQLPYODNQRP]RPHMHQLP0)'NDWHJRULMH&YUVWH,(&NDWHJRULMD
%DOL%DDOL%D
Connector sets and Interconnect components to be used in optical fibre communication
systems - Product specifications - Part 17-2: Type FPFT (factory polished field
terminated) simplex connector factory terminated with EN 60793-2-50 category B1.3
fibre and field mounted onto tight jacket cable containing IEC 60793-2-50 category B1.3
or B6a1 or B6a 2 single mode fibre (with restricted MFD), Category C
Ta slovenski standard je istoveten z: EN 50377-17-2:2015
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
SIST EN 50377-17-2:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50377-17-2:2015

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SIST EN 50377-17-2:2015


EUROPEAN STANDARD EN 50377-17-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
January 2015
ICS 33.180.20

English Version
Connector sets and Interconnect components to be used in
optical fibre communication systems - Product specifications -
Part 17-2: Type FPFT (factory polished field terminated) simplex
connector factory terminated with EN 60793-2-50 category B1.3
fibre and field mounted onto reinforced cable containing
IEC 60793-2-50 category B1.3 or B6a1 or B6a 2 singlemode
fibre (with restricted MFD), category C

This European Standard was approved by CENELEC on 2014-11-24. 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, 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.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 50377-17-2:2015 E

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SIST EN 50377-17-2:2015
EN 50377-17-2:2015 - 2 -
Contents Page
Foreword . 3
1 Scope . 6
1.1 Product definition . 6
1.2 Intermateability . 6
1.2.1 Mechanical intermateability . 6
1.2.2 Optical intermateability . 6
1.3 Operating environment . 6
1.4 Reliability . 6
1.5 Quality assurance . 6
2 Normative references . 7
3 Description . 8
3.1 General . 8
3.2 Plug . 8
3.3 Adaptor . 8
3.4 Materials . 8
3.5 Dimensions . 8
3.6 Colour and marking . 8
4 Variants . 9
4.1 Terminated plug . 9
4.2 Identification of variants . 9
5 Dimensional requirements – Ferrule end face geometry after termination . 10
6 Tests . 11
6.1 Sample configuration . 11
6.2 Test and measurement methods . 11
6.3 Test sequence . 11
6.4 Pass/fail criteria . 11
7 Test report . 12
8 Testing requirements . 12
8.1 Dimensional and marking requirements . 12
8.2 Optical performance requirements . 12
8.3 Mechanical performance requirements . 14
8.4 Environmental performance requirements . 16
Annex A (normative) Sample size and product sourcing requirements . 19
Annex B (informative) Reference connector details . 20
B.1 General information . 20
B.2 Reference connector details . 20
Bibliography . 21

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Foreword
This document (EN 50377-17-2:2015) has been prepared by CLC/TC 86BXA “Fibre optic interconnect,
passive and connectorised components”.
The following dates are fixed:
(dop) 2015-11-24
• latest date by which this document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2017-11-24
standards conflicting with this
document have to be withdrawn

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.
EN 50377 is composed of the following parts:
— EN 50377-2 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
— EN 50377-3-1, Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications — Part 3-1: Type SG terminated on IEC 60793-2-10 category A1a,
A1b or equivalent multimode fibre for category C;
— EN 50377-4 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
— EN 50377-5-1, Connector sets and interconnect components to be used in optical fibre communication
systems - Product specifications — Part 5-1: Type EC terminated on IEC 60793-2 category B1.1
singlemode fibre;
— EN 50377-6 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
— EN 50377-7 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
— EN 50377-8 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
— EN 50377-9 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;
— EN 50377-10 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems - Product specifications;
— EN 50377-11-1, Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications — Part 11-1: Type MF terminated on IEC 60793-2-50 category B1.1
and B1.3 singlemode fibre for category C;
— EN 50377-13 (all parts), Connector sets and interconnect components to be used in optical fibre
communication systems — Product specifications;

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SIST EN 50377-17-2:2015
EN 50377-17-2:2015 - 4 -
— EN 50377-14-1, Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications — Part 14-1: Cords with IEC 60793-2-50 singlemode category B1.1
and B1.3 fibre for category C;
— EN 50377-15-1, Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications — Part 15-1: Type MPO with 12-fibre PPS ferrules terminated on
IEC 60793-2 category A1a multimode fibre for 50/125 micron multimode fibre;
— EN 50377-16-1, Connector sets and interconnect components to be used in optical fibre communication
systems - Product specifications — Part 16-1: Type LF3 APC simplex terminated on IEC 60793-2-50
category B1.1 and B1.3 singlemode fibre with titanium composite ferrule for category C;
— EN 50377-17-1, Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications — Part 17-1: Type FPFT (factory polished field terminated) simplex
connector factory terminated with EN 60793-2-50 category B1.3 fibre and field mounted onto
IEC 60793-2-50 category B1.3 or B6a_1 or B6a_2 singlemode fibre, category C;
— EN 50377-17-2, Connector sets and Interconnect components to be used in optical fibre communication
systems — Product specifications — Part 17-2: Type FPFT (factory polished field terminated) simplex
connector factory terminated with EN 60793-2-50 category B1.3 fibre and field mounted onto reinforced
cable containing IEC 60793-2-50 category B1.3 or B6a1 or B6a 2 singlemode fibre (with restricted MFD),
category C. [the present document].

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SIST EN 50377-17-2:2015
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Connector sets and Interconnect components to be used in optical fibre communication systems –
Product specifications
Part 17–2: Type FPFT (factory polished field terminated) simplex connector factory
terminated with EN 60793–2-50 category B1.3 fibre and field mounted onto reinforced cable containing
IEC 60793–2-50 category B1.3 or B6a1 or B6a 2 singlemode fibre (with restricted MFD), category C
 Performance
1) FPFT Plug/adaptor/plug
Configuration: Application: For use in IEC Category C
and/or
Attenuation grades: Configuration 1 FPFT/50377
(random mate)
2) FPFT Plug/adaptor/FPFT B B: ≤ 0,20 dB
f
mean ≤ 0,40 dB
plug
for ≥ 97 % of
measurements
C C: ≤ 0,35 dB mean
f
≤ 0,70 dB for ≥ 97 % of
measurements
Fibre category: EN 60793–2-50  Configuration 2 FPFT/FPFT
Types B1.3, B6a_1 or B6a_2
B B : ≤ 0,35 dB
f f
(with restricted MFD)
mean ≤ 0,55 dB
for ≥ 97 % of
measurements
C C : ≤ 0,40 dB
f f
mean ≤ 0,75 dB
for ≥ 97 % of
measurements
Cable type: Reinforced cables > 0,9 mm Return loss grade: 1: ≥ 60 dB mated and ≥ 55 dB
up to 3 mm outer diameter unmated
EN 60794–2-50
2: ≥ 45 dB
3: ≥ 35 dB
Related documents:
EN 60793–2-50 Optical fibres — Part 2–50: Product specifications — Sectional specification for class B
single-mode fibres (IEC 60793–2-50)
EN 60794–2-50 Optical fibre cables — Part 2: Indoor cables — Family specification for simplex and
duplex cables for use in terminated cable assemblies (IEC 60794–2-50)
EN 61300 (all parts) Fibre optic interconnecting devices and passive components — Basic test and
measurement procedures (IEC 61300, all parts)
EN 61753–1 Fibre optic interconnecting devices and passive components performance
standards — Part 1: General and guidance for performance standards (IEC 61753–1)
Outline and maximum dimensions (mm):
For > 2,0 - < 3,0 mm cable diameter                                 For > 0,9 - < 2mm cable diameter

93 mm
83 mm


R30 min for B1.3 fibre
R25 min for B1.3 fibres
R20 min for B6a_1/a_2 fibre

R15min for B6a_1/a_2 fibres

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SIST EN 50377-17-2:2015
EN 50377-17-2:2015 - 6 -
1 Scope
1.1 Product definition
This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental
performance requirements that a Factory Polished Field Terminated (FPFT) single mode simplex connector
set (plug adaptor plug) will meet in order for it to be categorized as an EN standard product.
The FPFT is designed for either fusion or mechanical splice methods. The performance is specified for the
mated combination between a FPFT plug and an EN standardized plug from the EN 50377 series
(configuration 1) or between two FTFP plugs (configuration 2). The fibre specified inside the FPFT plug in this
European Standard is standard single mode fibre with low water peak as specified as B1.3, which is field
mated to B1.3 fibre or bend insensitive single mode fibre specified as B6_a1 or B6_a2 in EN 60793-2-50.
Mixing standard and bend insensitive fibres in a connection potentially causes a considerable intrinsic
attenuation due to mode field diameter mismatch. These connectors are intended to be for an indoor
installation. The connectors are terminated onto reinforced cables according to EN 60794-2-50 with outer
diameter greater than 0,9 and up to 3 mm.
Since different variants and grades of performance are permitted, product marking details are given in 3.6.
1.2 Intermateability
1.2.1 Mechanical intermateability
In order to meet mechanical performance requirements, the FPFT plug will meet the optical, environmental
and mechanical requirements as stated in this European Standard and the mated plug will meet all the
requirements of the relevant EN 50377 series for category C. Intermateability between the FPFT plug and its
standard EN 50377 counterpart can only be guaranteed when both plugs meet the same EN 50377 product
specification mechanical connector interface dimensions and end face geometry requirements.
1.2.2 Optical intermateability
In EN 50377 product specifications, the random mated performance is calculated when the two connector
plugs have been terminated with single-mode fibres using a worst case MFD. The specified MFD range in
fibre standards (e.g. B1.3 fibres) is 8,0 μm to 10,1 μm at 1 310 nm, which causes 0,22 dB worst case intrinsic
attenuation. However, in EN 50377 product specification series, the MFD is limited to 8,9 μm to 9,5 μm at
1 310 nm. In this European Standard, in order to achieve the random mate performance values, the total MFD
range of bend insensitive fibres, e.g. B6a fibres, is limited to 8,5 μm to 9,5 μm at 1 310 nm. This causes a
worst case intrinsic attenuation of 0,05 dB.
1.3 Operating environment
The tests selected, combined with the severities and durations, are representative of a category C
environment as defined in EN 61753-1. The FPFT plugs are terminated to reinforced optical cables with outer
diameter greater than 0,9 mm and up to 3 mm.
1.4 Reliability
While 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
recognized 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 recognized quality assurance programme.

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2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 50377 (all parts), Connector sets and interconnect components to be used in optical fibre communication
systems — Product specifications
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, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-2: Tests — Mating durability (IEC 61300-2-2)
EN 61300-2-4, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-4: Tests — Fibre/cable retention (IEC 61300-2-4)
EN 61300-2-5, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-5: Tests — Torsion (IEC 61300-2-5)
EN 61300-2-12, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-12: Tests — Impact (IEC 61300-2-12)
EN 61300-2-17, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-17: Tests — Cold (IEC 61300-2-17)
EN 61300-2-18, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-18: Tests — Dry heat — High temperature endurance (IEC 61300-2-18)
EN 61300-2-19, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 2-19: Tests — Damp heat (steady state) (IEC 61300-2-19)
EN 61300-2-22, Fibre optic interconnecting devices and passive components – Basic test and measurement
procedures — Part 2-22: Tests — Change of temperature (IEC 61300-2-22)
EN 61300-3-4, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 3-4: Examinations and measurements — Attenuation (IEC 61300-3-4)
EN 61300-3-6, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 3-6: Examinations and measurements — Return loss (IEC 61300-3-6)
EN 61300-3-15, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 3-15: Examinations and measurements — Dome eccentricity of a convex polished ferrule
endface (IEC 61300-3-15)
EN 61300-3-16, Fibre optic interconnecting devices and passive components — Basic test and measurement
procedures — Part 3-16: Examinations and measurements — Endface radius of spherically polished ferrules
(IEC 61300-3-16)
EN 61300-3-23, Fibre optic interc
...