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IEC 60793-1-40-ed.3.0
Optical fibres - Part 1-40: Attenuation measurement methods
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STANDARD published on 27.11.2024
The information about the standard:
Designation standards: IEC 60793-1-40-ed.3.0
Publication date standards: 27.11.2024
SKU: NS-1207645
The number of pages: 68
Approximate weight : 204 g (0.45 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 60793-1-40-ed.3.0 :
IEC 60793-1-40:2024 establishes uniform requirements for measuring the attenuation of optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes. Four methods are described for measuring attenuation, one being that for modelling spectral attenuation: -method A: cut-back; -method B: insertion loss; -method C: backscattering; -method D: modelling spectral attenuation. Methods A to C apply to the measurement of attenuation for all categories of the following fibres: -class A multimode fibres; -class B single-mode fibres. Method C, backscattering, also covers the location, losses and characterization of point discontinuities. Method D is applicable only to class B fibres. Information common to all four methods appears in Clause 1 to Clause 11, and information pertaining to each individual method appears in Annex A, Annex B, Annex C, and Annex D, respectively. This third edition cancels and replaces the second edition published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) modifying the definition of attenuation to be compatible with the definition in electropedia.org LIEC 60793-1-40:2024 etablit des exigences harmonisees pour mesurer laffaiblissement dune fibre optique, contribuant ainsi au controle des fibres et des cables a des fins commerciales. Quatre methodes sont decrites pour mesurer laffaiblissement, parmi lesquelles une methode pour modeliser laffaiblissement spectral: -methode A: fibre coupee; -methode B: pertes dinsertion; -methode C: retrodiffusion; -methode D: modelisation de laffaiblissement spectral. Les methodes A a C sappliquent au mesurage de laffaiblissement pour toutes les categories de fibres suivantes: -fibres multimodales de classe A; -fibres unimodales de classe B. La methode C, retrodiffusion, sapplique aussi a la localisation, aux pertes et a la caracterisation des discontinuites ponctuelles. La methode D sapplique uniquement aux fibres de classe B. Les informations communes a ces quatre methodes sont presentees aux Articles 1 a 11, et les informations propres a chaque methode individuelle, sont presentees a lAnnexe A, lAnnexe B, lAnnexe C et lAnnexe D, respectivement. Cette troisieme edition annule et remplace la deuxieme edition parue en 2019. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: a) modification de la definition de laffaiblissement pour saligner sur la definition du site electropedia.org
