ASD-STAN PREN 2591-100-2016 Aerospace series Elements of electrical and optical connection Test methods Part 100 General (Edition P 2).pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM ASD-STAN prEN 2591-100 Edition P 2 July 2016 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.org ICS: 49.060 Supersedes ed

2、ition P 1 of February 2001 and will supersede EN 2591-100:2005 Descriptors: Aerospace industry, aircraft equipment, elements of electrical and optical connection ENGLISH VERSION Aerospace series Elements of electrical and optical connection Test methods Part 100: General Luft- und Raumfahrt Elektris

3、che und optische Verbindungselemente Prfverfahren Teil 100: Allgemeines Srie arospatiale Organes de connexion lectrique et optique Mthodes dessais Partie 100 : Gnralits This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries As

4、sociation of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed t

5、o an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, the ASD-STAN prEN will be submitted as a draft European Standard (prEN) to CEN (European Committee for Stand

6、ardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. ASD-STAN Technical Committee a

7、pproves that: “This document is published by ASD-STAN for the needs of the European Aerospace Industry. The use of this standard is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the

8、 user.” ASD-STAN reviews each standard and technical report at least every five years at which time it may be revised, reaffirmed, stabilized or cancelled. ASD-STAN invites you to send your written comments or any suggestions that may arise. All rights reserved. No parts of this publication may be r

9、eproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of ASD-STAN. Order details: E-mail: salesasd-stan.org Web address: http:/www.asd-stan.org/ Edition approved for publica

10、tion 1st July 2016 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2016 ASD-STAN prEN 2591-100:2016 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Terms and definitions . 4 4 Standard test conditions 7 5 Test main r

11、equirements . 8 5.1 Fibre end preparation . 8 5.1.1 General 8 5.1.2 Parameters 8 5.1.3 Methods 11 5.1.4 Specimen examination and acceptance 11 5.1.5 Termination cleaning 12 5.2 Light Launch System (LLS) . 12 5.2.1 General 12 5.2.2 Generating the correct launch conditions . 13 5.2.3 Launch conditions

12、 specification for 62.5/125 m fibres and cables (NA = 0.275) . 14 5.2.4 Launch conditions specification for 50/125 m fibres and cables (NA = 0.2) 17 6 List of test methods 19 8 Test report . 24 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. Af

13、ter inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 2591-100:2016 (E) 3 1 Scope This standard specifies the general requirements for the methods of testing elements of elec

14、trical, optical and data transmission system connections used in aerospace applications. 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. F

15、or undated references, the latest edition of the referenced document (including any amendments) applies. EN 2083, Aerospace series Copper or copper alloy conductors for electrical cables Product standard EN 2084, Aerospace series Cables, electrical, general purpose, with conductors in copper or copp

16、er alloy Technical specification EN 2234, Aerospace series Cable, electrical, fire resistant Technical specification EN 2346, Aerospace series Fire resistant electrical cables Dimensions, conductor resistance and mass 1) EN 2591 (all parts), Aerospace series Elements of electrical and optical connec

17、tion Test methods EN 3745-201, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 201: Visual examination EN 4641-100, Aerospace series Cables, optical 125 m diameter cladding Part 100: Tight structure 62,5/125 m core GI fibre 1,8 mm outside diameter Product standard EN 6051

18、2-1, Connectors for electronic equipment Tests and measurements Part 1: General (IEC 60512-1:2001) EN 60793-1-43, Optical fibres Part 1-43: Measurement methods and test procedures Numerical aperture measurement EN 60793-1-45, Optical fibres Part 1-45: Measurement methods and test procedures Mode fie

19、ld diameter TR 4257, Aerospace series Elements of electrical and optical connection Relationship between the numbering systems for parts of EN 2591 2) IEC 60050-581, International Electrotechnical Vocabulary Part 581: Electromechanical components for electronic equipment 3) 1) Published as ASD-STAN

20、Prestandard at the date of publication of this standard. (http:/www.asd-stan.org/) 2) Published as ASD-STAN Technical Report at the date of publication of this standard. (http:/www.asd-stan.org/) 3) Published by: IEC Commission Electrotechnique Internationale http:/www.iec.ch/ prEN 2591-100:2016 (E)

21、 4 IEC 61300-3-35, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-35: Examinations and measurements Visual inspection of fibre optic connectors and fibre-stub transceivers 3) 3 Terms and definitions For the purposes of this document, the terms

22、 and definitions given in IEC 60050-581 and EN 60512-1 and the following apply. 3.1 element of electrical or optical connection 4) component such as connector, module, etc., the purpose of which is to ensure the connection of circuits 3.2 flight cover (or protective cover) accessory designed to ensu

23、re, in flight, mechanical protection and sealing of front face of a non-coupled connector 3.3 connector with built-in protection of contacts connector with characteristics such that male or female contacts, mounted in a plug or receptacle, cannot come into contact with the front of the connector to

24、which it is coupled (scoop-proof) and in which, in the event of accidental coupling of two parts or the connector equipped with male contacts, no electrical contact can take place 3.4 contact pressure point point at which a square ended gauge pin of the same basic diameter as the mating contact firs

25、t engages the female contact spring member 3.5 initial measurement examination or measurement of characteristics carried out to determine the magnitude of the variations produced by the stress or stresses applied This examination or measurement is carried out at the end of pre-conditioning and under

26、 normal atmospheric conditions for measuring. 3.6 final measurement examination or measurement of characteristics carried out at the end of the recovery to assess the condition of the specimen after testing and to determine the magnitude of the variations in characteristics in relation to the values

27、 recorded at initial measuring 3.7 flammability a product is considered to be “non-flammable“ when combustion due to exposure for a given duration to a standard external flame remains localized and stops spontaneously after withdrawal of the flame 4) In test standards the term “element of connection

28、“ shall be used. prEN 2591-100:2016 (E) 5 3.8 fire resistance a product is considered to be “fire-resistant“ when, subjected to a standard flame: it retains its electrical role for six minutes; the flame does not propagate to the other side of the support in the first twenty minutes. 3.9 values of a

29、lternating voltage and current unless otherwise indicated, alternating voltage and current are indicated in root mean square values 3.10 line data bus pair of twisted wires, shielded, having a specified impedance, a matched impedance at its two ends and used for data transport 3.11 branch line secti

30、on of twisted wires, shielded, with a specified impedance, which connects equipment to a bus line 3.12 line coupler element of electrical or optical connection the purpose of which is to shunt the transmission signals from a bus line to equipment 3.13 line coupler, single coupler consisting of one l

31、ine and one branch 3.14 line coupler, double coupler consisting of one line and two branches 3.15 in-line splice permanent element of electrical or optical connection for two-wire cables 3.16 line termination end line component the purpose of which is to match the bus line to its characteristic impe

32、dance 3.17 branch termination end branch termination the purpose of which is to eventually replace equipment 3.18 recovery treatment of a specimen, after conditioning, so that the properties of the specimen may be stabilized before measuring 3.19 optical fibre cable a certain number of optical fibre

33、s or bundles, coated separately and joined inside a common sheath prEN 2591-100:2016 (E) 6 3.20 beam splitter device for dividing an optical beam into two separate beams 3.21 insertion loss (of an optical element) extra optical attenuation caused by the insertion of an extra optical element into an

34、optical system 3.22 launch angle the launch angle is the angle between the wave propagation vector of the incoming light and the normal vector of an optic fibre end face 3.23 mode conditioner a device for adapting the light output from a source to produce a defined launch condition for testing an op

35、tical system 3.24 multimode fibre a multimode fibre is an optical fibre having a large core diameter dimension in relation to the wavelength of the light, and in which a large number of modes can propagate 3.25 optical port the port which radiates or accepts optical power at the interface 3.26 fibre

36、 optic branching device a device possessing three or more optical ports which shares optical power among its ports in a predetermined fashion 3.27 patchcord an assembly where the cable or fibre is terminated at each end with either a plug or receptacle connector 3.28 pigtail a pigtail is a short len

37、gth of fibre between a component and a transmission fibre, often permanently secured to the component (LED, coupler, connection elements, .) 3.29 power meter a device for measuring the optical power in a fibre optic system. Power measurements are usually made in Watts or dBm. Relative power measurem

38、ents are made in dB. 3.30 single mode fibre a single mode fibre is an optical fibre in which only one mode can propagate 3.31 passive coupler a passive coupler is a passive branching device in which power from one or more incoming optical ports is distributed to one or more outgoing optical ports pr

39、EN 2591-100:2016 (E) 7 3.32 tee coupler an optical fibre tee coupler is a passive coupler or combiner with three optical ports 3.33 return loss light energy reflected back from discontinuities in a fibre optic link 3.34 Light Launch System LLS device designed to create defined and repeatable light c

40、oupling conditions in a test setup 3.35 Light Detection System LDS device designed to take repeatable measurements of light transmitted by a test setup 3.36 temporary joint non permanent optical fibre connecting devices for use on equipment 3.37 terminator a non-reflective termination of an optical

41、fibre 3.38 test cord It is a terminated optical fibre cord used to connect the test equipment to the optical span, or to provide a suitable interfaces to the cabling under test. 3.39 For the following terms, see EN 3745-201 Optical fibre - Core - Cladding - Primary coating - Refractive index profile

42、 - Step index fibre - Graded index fibre - Quasi-step index fibre - Core diameter - Cladding diameter - Concentricity error core/cladding - Non circularity of core - Non circularity of cladding - Attenuation - Numerical aperture - Bandwidth 4 Standard test conditions 4.1 The test methods are written

43、 so that the test may be carried out either individually or included in a test sequence. When the test is carried out individually, the measurements are applicable so that the effect of the test on the performances of the specimen can be evaluated. This is why “if applicable“ has been added to the t

44、itles “Initial measurements“ and “Final measurements“. 4.2 Unless otherwise indicated in the test method, technical specification or product standard, the test conditions shall be as follows: temperature: (23 5) C; atmospheric pressure: 86 kPa to 106 kPa (860 mbar to 1 060 mbar); relative humidity:

45、45 % to 75 %. prEN 2591-100:2016 (E) 8 The temperature and humidity shall remain constant throughout a series of measurements. Unless otherwise indicated in the technical specification, the cables used for tests shall be in accordance with EN 2083 and EN 2084 or EN 2234 and EN 2346. 5 Test main requ

46、irements 5.1 Fibre end preparation 5.1.1 General The aim of this section is to give recommendations on the acceptable end condition of fibres, whether terminated or not. It is not intended to describe a precise method for fibre end preparation; instead it gives the information necessary to describe

47、and quantify fibre end quality. This paragraph is applicable therefore to all tests which require the use of at least one optical interface of this type. It applies to all types of fibre, silica, plastic or a combination of these and other materials, generally up to a diameter of 125 m. Comments are

48、 made for some other fibre sizes. 5.1.2 Parameters The quality of a fibre end can be described in terms of the end face profile and the surface condition. These terms are now described in more detail. 5.1.2.1 End face profile If terminated in a connector ferrule or contact, the fibre/ferrule end-fac

49、e will be required to have a particular profile depending on the application. The most common connector profiles are listed below: The connector end face profile will determine the connector insertion loss and return loss (back reflection). Minimizing back reflection is of great importance in certain high-speed and analogue fibre optic links to prevent instability at the source. PC Polish A Physical Contact (PC) polish