Hivatkozási szám

MSZ EN 50411-2-9:2010

Dokumentumazonosító

149657

Cím

Fénytávközlési rendszerekben használt szálrendezők és kötéslezárók. Termékelőírások. 2-9. rész: Tömítetlen kötéslezárók szálbefújásos, minicsöves kábelekhez; S és A kategória

Angol cím

Fibre organisers and closures to be used in optical fibre communications systems. Product specifications. Part 2-9: Non-sealed closures for air blown fibre microduct cable, for category S & A

Alkalmazási terület

This part of IEC 61280 is intended to characterize the encircled flux of two types of light sources: transmission light sources, which are usually coherent and substantially under-excite the mode volume of a multimode fibre, and measurement light sources, which are incoherent and excite most of the mode volume of a multimode fibre. This part of IEC 61280 sets forth a standard procedure for the collection of two-dimensional fibre optic nearfield greyscale data and subsequent reduction to one-dimensional data expressed as a set of three sampled parametric functions of radius from the fibre’s optical centre. This revision of IEC 61280-1-4 continues to fulfil its original purpose, characterization of transmission light sources, which enables the accurate mathematical prediction of minimum guaranteed link length in 1 gigabit per second or greater fibre optic data communication systems. New to this revision is support for improved measurement precision of insertion loss in multimode fibre optic links through the characterization of measurement light sources. Estimation of the fibre core diameter is not an objective of this standard. 1.3 Test severity The test severities are based on IP40 (see EN 60529). The test criteria for all mechanical and environmental tests cover visual appearance, and protected microduct retention of the closure. It is generally accepted practice that liquids will enter the closure through its body or connected ducts. 1.4 Reliability Whilst the anticipated service life expectancy of the product in this environment is a minimum of 20 years, compliance with this specification 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 specification does not guarantee the manufacturing consistency of the product. This should be maintained using a recognised quality assurance programme. 1.6 Allowed fibre and cable types This closure standard covers all IEC/EN standard optical fibre microducts, and protected microducts with their various fibre capacities, types and designs. This includes optical fibre cable standard EN 60794-5. This product specification has only considered protected microduct cables containing microducts of same outside diameters. There are other hybrid protected microduct cables with microducts of differing OD’s; it may be possible to use these hybrids, however the user must verify suitability in each case. 1.7 Allowed microduct connector types This closure standard covers all EN standard microduct connectors, including: straight, reducer/enlarger stem, reducer/enlarger, close down, liquid block, liquid block with barb end, and end stop connectors. This includes EN 50411-2-8. Túl hosszú

ICS

33.180.20 Fényvezető csatlakozók

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2010-05-01

Forrás

idt EN 50411-2-9:2010

Előd

Utód

Módosítás

Kiegészítő információk

SZK-közlemények

Kapcsolódó európai jogszabály

A szabvány

kapható formátuma

Papír ,
PDF (letöltés) (a fájl mérete: 738026) ,

oldalszáma

41 oldal; S kategória

ára

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