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This Document Has Been Superseded
A newer publication replaces it: BSI BS EN 60793-1-20, BSI BS EN IEC 60793-1-47
Optical fibres -- Measurement methods and test procedures. Macrobending loss
IEC 60793-1-47:2009 establishes uniform requirements for measuring the macrobending loss of single-mode fibres (category B) at 1 550 nm or 1 625 nm, category A1 multimode fibres at 850 nm or 1 300 nm, and category A3 and A4 multimode fibres at 650 nm, 850 nm or 1 300 nm, thereby assisting in the inspection of fibres and cables for commercial purposes.
The standard gives two methods for measuring macrobending sensitivity:
For both of these methods, the optical power is measured using either the power monitoring or the cut-back technique.
This third edition cancels and replaces the second edition published in 2006. It constitutes a technical revision. The main change is the introduction of Annex A describing small bend radius phenomena.
Keywords: inspection of fibres and cables for commercial purposes.
This publication is to be read in conjunction with IEC 60793-1-1:2008.
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