EN 3745-301:2012
(Main)Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 301: Attenuation
Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 301: Attenuation
This European Standard specifies procedures for the practical measurement of the attenuation and variation in attenuation of optical fibre or optical cable (both hereafter referred to as fibre). Methods A and B are intended for fibre acceptance testing and shall be performed on fibre lengths greater than 1 km. Method C is intended for attenuation measurement required during environmental and mechanical testing and shall be performed on fibre lengths less than 100 m.
Luft- und Raumfahrt - Faseroptische Leitungen für Luftfahrzeuge - Prüfverfahren - Teil 301: Optische Dämpfung
Diese Europäische Norm legt die Verfahrensanweisungen für die praktische Messung der Dämpfung und
Dämpfungsschwankungen in Lichtwellenleitern oder optischen Leitungen fest (beide nachstehend Glasfaser
genannt). Verfahren A und B dienen zur Abnahmeprüfung für Glasfaserkabel und sind an Leitungslängen
über 1 km durchzuführen. Verfahren C dient zur Dämpfungsmessung, wie sie im Rahmen von Umgebungsund
mechanischen Proben erforderlich ist, und ist an Leitungslängen unter 100 m durchzuführen.
Série aérospatiale - Fibres et câbles optiques à usage aéronautique - Méthodes d'essais - Partie 301: Atténuation
La présente Norme Européenne spécifie les procédures pour la mesure pratique de l'atténuation et la
variation de l'atténuation de la fibre optique ou du câble optique (tous deux étant considérés comme des
fibres). Les méthodes A et B sont destinées à l'essai de réception des fibres et doivent être effectuées sur des
longueurs de fibres supérieures à 1 km. La méthode C est destinée à la mesure de l'atténuation exigée durant
l'essai d'environnement et l'essai mécanique et doit être effectuée sur des longueurs de fibres inférieures à
100 m.
Aeronavtika - Optična vlakna in kabli za uporabo v zračnih plovilih - Preskusne metode - 301. del: Optično slabljenje
Ta evropski standard določa postopke za praktično merjenje slabljenja in sprememb v slabljenju optičnega vlakna ali optičnega kabla (v nadaljevanju oboje: »vlakna«). Metodi A in B sta namenjeni preskušanju sprejemljivosti vlakna in ju je treba uporabiti pri vlaknih, daljših od 1 km. Metoda C je namenjena merjenju slabljenja, ki je potrebno med okoljskim in mehanskim preskušanjem, ter jo je treba uporabiti pri vlaknih, krajših od 100 m.
General Information
- Status
- Published
- Publication Date
- 15-May-2012
- Withdrawal Date
- 29-Nov-2012
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 2 - Electrical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 30-Jun-2017
- Completion Date
- 28-Jan-2026
Relations
- Effective Date
- 08-Jun-2022
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 3745-301:2012 - Aerospace series: Fibres and cables, optical, aircraft use - Test methods - Part 301: Attenuation - specifies practical procedures for measuring the attenuation and variation in attenuation of optical fibres and optical cables intended for aircraft. It defines which measurement methods to use depending on fibre length and test purpose, and points to the required specimen preparation, apparatus and related test-condition standards.
Key topics and technical requirements
- Scope of measurement
- Methods A and B: intended for fibre acceptance testing and shall be performed on fibre lengths greater than 1 km.
- Method C: intended for attenuation measurement during environmental and mechanical testing, for lengths less than 100 m.
- Method D (referenced): backscattering method per EN 60793-1-40:2003 Annex C.
- Measurement methods
- Method A - Cut-back technique: procedure as specified in EN 188000:1992 method 301.
- Method B - Insertion loss: procedure as specified in EN 188000:1992 method 302.
- Method C - Attenuation variation: procedure as specified in EN 2591-602:2001 method A.
- Method D - Backscattering: referenced to EN 60793-1-40:2003 Annex C.
- Specimen preparation
- Fibre end preparation and length selection per EN 2591-100 and product specification.
- Additional preparation per EN 188000:1992, EN 2591-602:2001 or EN 60793-1-40:2003 depending on the chosen method.
- Apparatus and test conditions
- Light launch systems for methods A/B must conform to EN 188000; for method C to EN 2591-100.
- Light detection systems must be compatible with the launch system (see EN 2591-100).
- Test conditions follow EN 3745-100 unless otherwise required by the product specification.
- Normative references
- EN 2591 series, EN 188000, EN 3745-100, EN 60793-1-40 and other aerospace-specific test standards.
Applications and users
- Intended for use by:
- Aerospace OEMs and suppliers specifying or qualifying aerospace optical fibre and cable.
- Cable and fibre manufacturers performing acceptance testing and production quality control.
- Environmental and mechanical test laboratories measuring attenuation variation after stress or conditioning.
- Avionics and systems engineers validating optical link performance in aircraft systems.
- Practical uses:
- Establishing baseline attenuation for procurement acceptance.
- Verifying attenuation changes after environmental, mechanical or installation tests.
- Ensuring optical link performance meets aircraft system requirements.
Related standards
- EN 3745-100 (general test-method requirements)
- EN 2591-100 / -601 / -602 (elements of electrical and optical connection; insertion loss; attenuation variation)
- EN 188000 (generic optical-fibre specifications)
- EN 60793-1-40 (IEC-equivalent attenuation measurement methods)
Keywords: EN 3745-301:2012, optical fibre attenuation, aerospace optical cables, attenuation measurement, cut-back technique, insertion loss, attenuation variation, backscattering, fibre acceptance testing.
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Frequently Asked Questions
EN 3745-301:2012 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 301: Attenuation". This standard covers: This European Standard specifies procedures for the practical measurement of the attenuation and variation in attenuation of optical fibre or optical cable (both hereafter referred to as fibre). Methods A and B are intended for fibre acceptance testing and shall be performed on fibre lengths greater than 1 km. Method C is intended for attenuation measurement required during environmental and mechanical testing and shall be performed on fibre lengths less than 100 m.
This European Standard specifies procedures for the practical measurement of the attenuation and variation in attenuation of optical fibre or optical cable (both hereafter referred to as fibre). Methods A and B are intended for fibre acceptance testing and shall be performed on fibre lengths greater than 1 km. Method C is intended for attenuation measurement required during environmental and mechanical testing and shall be performed on fibre lengths less than 100 m.
EN 3745-301:2012 is classified under the following ICS (International Classification for Standards) categories: 49.090 - On-board equipment and instruments. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 3745-301:2012 has the following relationships with other standards: It is inter standard links to EN 3745-301:2002, EN 2591-602:2001, EN 2591-100:2005, EN 3745-100:2008, EN 2591-601:2001, EN 4641-103:2025, EN 3745-410:2015, EN 4641-201:2018, EN 3745-306:2025, EN 4641-102:2025, EN 4641-202:2018, EN 3745-412:2005, EN 3745-506:2018, EN 3745-404:2005, EN 3745-510:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3745-301:2012 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Faseroptische Leitungen für Luftfahrzeuge - Prüfverfahren - Teil 301: Optische DämpfungSérie aérospatiale - Fibres et câbles optiques à usage aéronautique - Méthodes d'essais - Partie 301: AtténuationAerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 301: Attenuation49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 3745-301:2012SIST EN 3745-301:2012en,fr,de01-september-2012SIST EN 3745-301:2012SLOVENSKI
STANDARDSIST EN 3745-301:20041DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3745-301
May 2012 ICS 49.090 Supersedes EN 3745-301:2002English Version
Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 301: Attenuation
Série aérospatiale - Fibres et câbles optiques à usage aéronautique - Méthodes d'essais - Partie 301: Atténuation Luft- und Raumfahrt - Faseroptische Leitungen für Luftfahrzeuge - Prüfverfahren - Teil 301: Optische Dämpfung This European Standard was approved by CEN on 21 January 2012.
CEN 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 CEN 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 CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3745-301:2012: ESIST EN 3745-301:2012
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