SIST EN 50377-8-7:2007
(Main)Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications -- Part 8-7: LSH-PC terminated on IEC 60793-2-50 category B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category C
Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications -- Part 8-7: LSH-PC terminated on IEC 60793-2-50 category B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category C
This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements which a connector terminated with cylindrical zirconia PC ferrule and assembled singlemode resilient alignment sleeve LSH-PC simplex connector set (plug/adaptor/plug), adaptor and patchcord must meet in order for it to be categorised as an EN standard product. Since different variants and grades of performance are permitted, product marking details are given in 3.5. Although all products conforming to the requirements of this 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. When intermating plug variants having different attenuation grades, the resulting level of attenuation can not be assured to be any better than the worst attenuation grade. The intermating of a grade C plug with a grade B plug will result in an uncertain level of random attenuation performance.
Steckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter-Datenübertragungssysteme - Produktnormen -- Teil 8-7: Bauart LSH-PC zum Anschluss an Einmodenfasern der Typen B1.1 und B1.3 nach IEC 60793-2-50 mit Zirkonium-Stift für die Kategorie C
Jeux de connecteurs et composants d'interconnexion à utiliser dans les systèmes de communication par fibres optiques - Spécifications de produit -- Partie 8-7: Type LSH-PC câblé sur une fibre unimodale des catégories B1.1 et B1.3 de la CEI 60793-2-50, férule tout zircone, catégorie C
La présente Norme Européenne donne les exigences de performances initiales, dimensionnelles en début de vie, optiques, mécaniques et environnementales auxquelles un connecteur équipé d’une férule en zircone cylindrique PC et un jeu de connecteurs simplex de type LSH-PC à manchon d'alignement élastique unimodaux équipés et assemblés (fiche/raccord/fiche), un raccord et un cordon de brassage doivent satisfaire afin d'être classés comme entrant dans une norme EN de produit.
Konektorski sestavi in povezovalne komponente za optične komunikacijske sisteme – Specifikacije izdelka – 8-7. del: Vrsta LSH-PC, zaključena na enorodnem vlaknu IEC 60793-2-50 kategorij B1.1 in B1.3, cirkonijeva tulka kategorije C
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Connector sets and interconnect components to be used in optical fibre communication systems - Product specifications -- Part 8-7: LSH-PC terminated on IEC 60793-2-50 category B1.1 and B1.3 singlemode fibre, with full zirconia ferrule category CFLMVNHJeux de connecteurs et composants d'interconnexion a utiliser dans les systemes de communication par fibres optiques - Spécifications de produit -- Partie 8-7: Type LSH-PC câblé sur une fibre unimodale des catégories B1.1 et B1.3 de la CEI 60793-2-50, férule tout zircone, catégorie CSteckverbindersätze und Verbindungsbauelemente für Lichtwellenleiter-Datenübertragungssysteme - Produktnormen -- Teil 8-7: Bauart LSH-PC zum Anschluss an Einmodenfasern der Typen B1.1 und B1.3 nach IEC 60793-2-50 mit Zirkonium-Stift für die Kategorie CTa slovenski standard je istoveten z:EN 50377-8-7:2007SIST EN 50377-8-7:2007en33.180.20Fibre optic interconnecting devicesICS:SLOVENSKI
STANDARDSIST EN 50377-8-7:200701-november-2007
EUROPEAN STANDARD EN 50377-8-7 NORME EUROPÉENNE
EUROPÄISCHE NORM August 2007
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
© 2007 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50377-8-7:2007 E
ICS 33.180.20
English version
Connector sets and interconnect components
to be used in optical fibre communication systems -
Product specifications -
Part 8-7: LSH-PC terminated on IEC 60793-2-50
category B1.1 and B1.3 singlemode fibre,
with full zirconia ferrule category C
Jeux de connecteurs et composants d'interconnexion à utiliser
dans les systèmes de communication par fibres optiques -
Spécifications de produit -
Partie 8-7: Type LSH-PC câblé
sur une fibre unimodale des catégories B1.1 et B1.3 de la CEI 60793-2-50,
férule tout zircone, catégorie C
Steckverbindersätze
und Verbindungsbauelemente
für Lichtwellenleiter-Datenübertragungssysteme -
Produktnormen -
Teil 8-7: Bauart LSH-PC zum Anschluss an Einmodenfasern der Typen
B1.1 und B1.3 nach IEC 60793-2-50
mit Zirkonium-Stift für die Kategorie C
This European Standard was approved by CENELEC on 2007-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical 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, Bulgaria, 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.
EN 50377-8-7:2007 - 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 50377-8-7 on 2007-03-01. 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)
2008-03-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2010-03-01 __________
- 3 - EN 50377-8-7:2007
Connector sets and interconnect components to be used in optical fibre communication systems -
Product specifications Part 8-7: LSH-PC terminated on IEC 60793-2-50 category B1.1 and B1.3 singlemode fibre, with full zirconia
ferrule category C Description Performance Coupling mechanism: Latched push-pull
Configuration:
Plug/adaptor/plug
Fibre category:
EN 60793-2-50
Types B1.1 and B1.3
Cable type:
See Table 3 Application:
Attenuation grades: (random mate)
Return loss grades: For use in EN category C (controlled environment)
B: ≤ 0,12 dB mean ≤ 0,25 dB for > 97 % of measurements
C: ≤ 0,25 dB mean
≤ 0,50 dB for > 97 % of measurements
2: ≥ 45 dB Related documents: EN 60794-2 Optical fibre cables - Part 2: Indoor cables - Sectional specification (IEC 60794-2) 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 61754-15 Fibre optic connector interfaces - Part 15: Type LSH connector family (IEC 61754-15) EN 61755-1 Fibre optic connector optical interfaces - Part 1: Optical interfaces for single mode non-dispersion shifted fibres - General and guidance (IEC 61755-1) EN 61755-3-1 1) Fibre optic connector optical interfaces - Part 3-1: Optical interface, 2,5 mm and 1,25 mm diameter cylindrical full zirconia PC ferrule, single mode fibre
(IEC 61755-3-1, mod.)
Outline and maximum dimensions:
1) At draft stage.
EN 50377-8-7:2007 - 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.9 5 Dimensional requirements.10 5.1 Outline dimensions.10 5.2 Mating face and other limit dimensions.14 6 Tests.23 6.1 Sample size.23 6.2 Test and measurement methods.23 6.3 Test sequence.23 6.4 Pass/fail criteria.23 7 Test report.23 8 Product qualification requirements.24 8.1 Dimensional and marking requirements.24 8.2 Optical performance requirements.24 8.3 Mechanical performance requirements.26 8.4 Environmental performance requirements.30
Annex A (informative)
Attenuation against reference.32 Annex B (normative)
Adaptor matched reference plug details.33 Annex C (normative)
Sample size and product sourcing requirements.34 Annex D (informative)
Zirconia ferrule response surface.35
Bibliography.36
Figure 1 - Outline dimensions - Plug.10 Figure 2 - Outline dimensions - Adaptor.11 Figure 3 - Mating face and other limit dimensions - Plug.14 Figure 4 - Ferrule end face geometry - After termination.16 Figure 5 - Positioning of fibre core.16 Figure 6 - Ferrule end face geometry - Allowable undercut.18 Figure 7 - Requirements for the attenuation grades
for the plug fibre core connected to the ideal reference.19 Figure 8 - Mating face and other dimensions - Adaptor.20 Figure 9 - Pin gauge for adaptor.22 Figure D.1 - Radius vs. undercut and apex offset.35
Table 1 - Ensured level of random attenuation.5 Table 2 - Preferred colour scheme.7 Table 3 - Plug variants.8 Table 4 - Adaptor variants.9 Table 5 - Geometrical parameters.17 Table 6 - Optical performance requirements.24 Table 7 - Mechanical performance requirements.26 Table 8 - Environmental performance requirements.30
- 5 - EN 50377-8-7:2007
1 Scope
1.1 Product definition
This European Standard contains the initial, start of life dimensional, optical, mechanical and environmental performance requirements which a connector terminated with cylindrical zirconia PC ferrule and assembled singlemode resilient alignment sleeve LSH-PC simplex connector set (plug/adaptor/plug), adaptor and patchcord must meet in order for it to be categorised as an EN 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 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.
When intermating plug variants having different attenuation grades, the resulting level of attenuation can not be assured to be any better than the worst attenuation grade. The intermating of a grade C plug with a grade B plug will result in an uncertain level of random attenuation performance.
Table 1 - Ensured level of random attenuation Plug variant/Attenuation grade C B C C C B C B
1.3 Operating environment
The tests selected combined with the severities and durations are representative of a Category C environment as described in EN 61753-1.
1.4 Reliability
Whilst the anticipated service life expectancy of the product in this environment is 20 years, compliance with this 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 standard does not guarantee the manufacturing consistency of the product. This should be maintained using a recognised quality assurance programme.
EN 50377-8-7:2007 - 6 -
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 60793-2-50 Optical fibres - Part 2-50: Product specifications - Sectional specification for class B
single-mode fibres (IEC 60793-2-50) 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/twist (IEC 61300-2-5) EN 61300-2-6 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-6: Tests - Tensile strength of coupling mechanism (IEC 61300-2-6) 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 61300-2-42 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-42: Tests - Static side load for connectors (IEC 61300-2-42) EN 61300-2-44 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-44: Tests - Flexing of the strain relief of fibre optic devices
(IEC 61300-2-44) 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 61300-3-10 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-10: Examinations and measurements - Gauge retention force (IEC 61300-3-10) EN 61300-3-15 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-15: Examinations and measurements - 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 interconnecting devices and passive components - Basic test and measurement procedures - Part 3-23: Examinations and measurements - Fibre position relative to ferrule endface (IEC 61300-3-23) EN 61300-3-34 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-34: Examinations and measurements - Attenuation of random mated connectors (IEC 61300-3-34) EN 61300-3-42 1)2 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-42: Examinations and measurements - Attenuation of single mode alignment sleeves and or adaptors with resilient alignment sleeves (IEC 61300-3-42) 1) EN 61753-1 Fibre optic interconnecting devices and passive components performance standard -
Part 1: General and guidance for performance standards (IEC 61753-1)
1) At draft stage.
- 7 - EN 50377-8-7:2007
3 Description
The LSH-PC connector is a single position plug connector set of plug/adaptor/plug configuration characterised by a cylindrical, spring loaded butting ferrule of 2,5 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 full zirconia ferrule and a latched push-pull mechanism. The plug has mechanical and colour coding.
3.2 Adaptor
The adaptor has a zirconia ceramic resilient alignment sleeve. The mounting style can be: i square flange - 2 hole fixing; ii square flange - side clip fixing; iii square flange - top bottom clip fixing.
Covers (dustcaps) shall be provided to protect each port of the adaptor. The adaptor has a mechanical coding identifiable by colour.
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 the following order of precedence: - identification of manufacturer; - manufacturing date code: year/week; - manufacturers part number; - variant identification number.
The following colour scheme is preferred:
Table 2 - Preferred colour scheme Adaptor Delatch housing Blue Blue Preferred RAL number 5015
EN 50377-8-7:2007 - 8 -
4 Variants
4.1 Terminated plug
The following variants are permitted:
Table 3 - Plug variants
EN5 0377- 8 - 7 -***-* 2
No. Fibre/Cable ∅
mm Structure 01 0,6 - 1,4 Buffered fibre 02 2,0 ± 0,2 Reinforced cable 03 2,5 ± 0,2 Reinforced cable 04 2,8 ± 0,2 Reinforced cable 05 3,0 ± 0,2 Reinforced cable 06 3,2 ± 0,2 Reinforced cable
Mechanical code Colour code for the latch Note 0 Green 1, not coded 1 Red, RAL 3020
2 Brown, RAL 8004
3 Yellow, RAL 1016
4 Orange, RAL 2003
5 Violet, RAL 4008
6 White, RAL 9010
NOTE
Universal, intermatable to all mechanical and colour coded adaptors.
Code Attenuation grade B B C C
Code Return loss grade 2 2
- 9 - EN 50377-8-7:2007
4.2 Adaptor
The following variants are permitted:
Table 4 - Adaptor variants
EN5037 7 - 8 - 7 -D * * *
No. Format 01 Square flange 2 hole screw fixing 02 Square flange side clip fixing 03 Square flange top-bottom clip fixing
Mechanical code Colour code for the frame Note 0 Green 1, not coded 1 Red, RAL 3020
2 Brown, RAL 8004
3 Yellow, RAL 1016
4 Orange, RAL 2003
5 Violet, RAL 4008
6 White, RAL 9010
NOTE
Universal, intermatable to all mechanical and colour coded plugs.
EN 50377-8-7:2007 - 10 -
5 Dimensional requirements
5.1 Outline dimensions
5.1.1 Plug variants
Variant No. 01* (*: third digit related to mechanical coding)
Ref. Dimensions Note
min. mm max.
A B C D E - - 0,7 - 5,95
34
60
1,4
13,05
5,98 1
Variant No. 02*/03*/04*/05*/06*
Ref. Dimensions Note
min. mm max.
A B C D E
-
- 1,8
- 5,95
38
63
3,4
13,05
5,98 1 NOTE
Rigid length. Figure 1 - Outline dimensions - Plug
- 11 - EN 50377-8-7:2007
5.1.2 Adaptor variants
Variant No. D01* (*: third digit related to mechanical coding) Ref. Dimensions Note
min. mm max.
A 41,7
42,5
B 19,0
19,4
C
-
9,0
D
-
22,2
E
-
13,1
G 13,1
13,5
H
9,6
10,0
I 17,9
18,1
L
2,2
2,4 Diameter Figure 2 - Outline dimensions - Adaptor
EN 50377-8-7:2007 - 12 -
Variant No. D02* Ref. Dimensions Note
min. mm max.
A 41,7
42,5
B 19,0
19,4
C
-
9,0
D
-
22,2
E
-
13,1
F
1,3
1,6
G 13,1
13,5
H
9,6
10,0
K
-
9,6
Figure 2 - Outline dimensions - Adaptor (continued)
- 13 - EN 50377-8-7:2007
Variant No. D03* Ref. Dimensions Note
min. mm max.
A 41,7
42,5
B 19,0
21,4
C
-
9,0
D
-
22,2
E
-
13,1
F
1,3
1,6
G 13,1
13,5
H
9,6
10,0
Figure 2 - Outline dimensions - Adaptor (continued)
EN 50377-8-7:2007 - 14 - 5.2 Mating face and other limit dimensions
5.2.1 Plug
Figure 3 - Mating face and other limit dimensions - Plug Mechanical reference plane Open (closed see detail X) Optical datum target Ferrule 2 Closed Detail X Universal View from direction B (mechanical coding according to Table 2) only latch
- 15 - EN 50377-8-7:2007
Ref. Dimensions Note
min. mm max.
A
-
- Diameter, 2, 3, table in Figure 5 B
4,45
4,55 Diameter C
6,25
6,29
D
8,82
8,88
E
2,75
2,79
F
2,95
2,99
G
0,67
1,0
I
4,93
4,98
J
4,13
4,18
K 45
60 Angle in degrees L
6,1
6,5
M (free) 12,05
- 1 M (mated) 11,9
- 1 N 10,9
11,05
O
0,9
1,5
P
4,5
5,0
Q
3,9
4,1
R
1,2
1,5
S
1,25
1,35
T 25
36 Angle in degrees U
6,8
7,2
V
8,2
8,4
AA
0,9
1,3
AB
2,5
2,8
AF
4
4,08
AG
1,15
1,2
AM
3,0
3,1
AN
0,1
0,3
AO
1,5
2,0
AR
6,1
6,2
AS
2,8
3,5
AT
1,65
1,7
CA
0,99
1,01
CB
0,49
0,51
CC
1,49
1,51
CD
1,96
2,04
CE
0,95
1,05
NOTE 1
Dimension M (free) refers to the plug in the unmated condition. Dimension M (mated) varies according to the axial compression generated when mated. The axial compression force shall be between 7,8 N and 11,8 N when dimension M (mated) is between 12,0 mm and 11,9 mm. NOTE 2
Envelope condition in accordance with ISO 8015. NOTE 3
Surface roughness Ra ≤ 0,1 µm. Figure 3 - Mating face and other limit dimensions - Plug (continued)
EN 50377-8-7:2007 - 16 - 5.2.2 Ferrule endface geometry and fibre core position after termination
Figure 4 - Ferrule end face geometry - After termination
Figure 5 - Positioning of fibre core No sharp
edge K DJCAE
B
F H G Ferrule axisFibre axis
- 17 - EN 50377-8-7:2007
Table 5 - Geometrical parameters Parameter values
Grade B Grade C Notes Ref. min. max. min. max.
A -100 Note 1 -100 Note 1 Note 1, 2, 3 [nm] B 5 30 5 30 Radius, mm C 0 50 0 50 Note 4, µm D 2,498 5
2,499 5 2,498 5
2,499 5 Diameter, mm E 0
0,2 0
0,2 Degree F 0
0,001 05 0
0,001 5 Radius, mm G 0
0,000 3 0
0,000 3 Radius, mm H 0 50 0 50 Degree J 0,8
- 0,8
- mm K -
1,8 -
1,8 mm NOTE 1
Contact force 4,9 N minimum. The given endface conditions are for 3 mol% yttria stabilised zirconia ZrO2 ferrule with grain size < 0,35 µm, a Young’s modulus between (200 ± 20) GPa and a Poisson ratio between 0,30 to 0,31 which is normative for this specification. NOTE 2
The dome offset is defined as a distance between the ferrule centre and the vertex of the spherically polished endface. NOTE 3
The radius and fibre undercut shall be measured in all directions over a diameter of 0,25 mm. NOTE 4
The negative value refers to fibre protrusion.
EN 50377-8-7:2007 - 18 -
Allowable undercut for 4.9 N and apex offset 50 um05010015020025030005101520253035Endface radius [mm]Allowable undercut [nm] Figure 6 - Ferrule end face geometry - Allowable undercut
()()60101010198832626795.0−⋅−⋅+⋅−⋅=Α−CBBBMaximum
The figures and the values above define the parameters that must be met by each individual plug in order to ensure that the specified random attenuation performance grade will be met in any connection.
- 19 - EN 50377-8-7:2007
5.2.3 Control of fibre core position and axis
Figure 7 shows the relationship between the axis of the fibre and the position of the fibre core relative to the optical datum (see 5.2.2).
Figure 7 - Requirements for the attenuation grades
for the plug fibre core connected to the ideal reference
Remark: Ideal reference plug has zero angular offset and zero lateral offset.
The figure and the values above define the parameters that should be met by an individual plug after termination in order to ensure that the specified random attenuation performance grade will be met.
The graph lines for grades B and C give the maximum value for the two parameters to be met by any plug after the manufacturing process. The specified random performance however can only be met with a Raleigh distribution of each of these parameters. The lines are based on a worst case mode field diameter mismatch.
()eW22W21a2W22W21τW2W1N1π22*W22W212W12W210log(dB) IL22+++−+−=λ)
Wi Mode field radii (µm), i = 1, 2 (Calculation for the above curve is done with worst case mode field diameter mismatch W1 = 4,45 µm; W2 = 4,75 µm.) N1 Refractive index between the end faces (in this case it's equal with the refractive index of the core) a Fibre core eccentricity (µm) τ) Fibre angle (radians) λ Wavelength (Calculation for the above curve is done with 1 310 nm.)
EN 50377-8-7:2007 - 20 -
5.2.4 Adaptor
Figure 8 - Mating face and other dimensions - Adaptor
α Mechanical reference plane Universal View from direction B (mechanical colour coding according to Table 3)
- 21 - EN 50377-8-7:2007
Ref. Dimensions Note
min. mm max. A
-
- 1, diameter B
4,2
4,4 Diameter C
6,31
-
D
8,92
-
E
2,81
2,85
F
3,02
3,05
G
0,5
0,65
H
6,0
6,05
I
5,0
5,05
J
4,2
4,25
K 30
45 Angle in degrees L
-
6,5
M 11,9
12,0
N 11,1
11,5
O
-
0,85
P
5,1
-
Q
4,8
5,2
R
-
1,4
T 36
40 Angle in degrees U
6,5
6,7
V
8,45
8,65
AA
0,75
0,9
AB
2,45
2,55
AC
-
2,9
AD
1,0
1,2
AE 30
40 Angle in degrees AF
4,1
4,2
AG
1,25
1,3
AH
3,45
-
AK 14,8
-
AL 17,9
-
AR
6,3
6,4
CA
0,99
1,01
CB
0,49
0,51
CC
1,49
1,51
CD
2,06
2,14
CE
1,1
1,2
DA
4,4
5,0
NOTE
The connector alignment feature is a resilient sleeve. The feature must accept a gauge pin to the center of the adaptor with a force of 2,0 N to 5,9 N under the condition that another gauge pin is inserted into the feature from the other side. The center of the adaptor is defined by the right side position of the dimension M. The surface roughness of the inside of the alignment sleeve shall be Ra < 0,3 µm. Figure 8 - Mating face and other dimensions - Adaptor (continued)
EN 50377-8-7:2007 - 22 - 5.2.5 Pin gauge for adaptor
Ref. Dimensions Note
min. mm max. A
2,498 5
2,499 5 1, diameter B 12,5
13,5
C
1,0
1,5
D 28
32 Angle in degrees NOTE 1
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