IEC/TR 62316 Ed. 3.0 en:2017

Guidance for the interpretation of OTDR backscattering traces for single-mode fibres

IEC/TR 62316:2017 which is a Technical Report, aims to provide guidelines for the interpretation of backscattering traces, as obtained by traditional optical time domain reflectometers (OTDRs) – not including polarization OTDRs – for single-mode fibres. Also, backscattered power effects are discussed in case of unidirectional trace. Full description of the test measurement procedure can be found in Annex C of IEC 60793-1-40:2001. This third edition cancels and replaces the second edition published in 2007. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
 a. the scope has been extended to include single-mode fibres;
 b. backscattered power effects are discussed in case of unidirectional trace, including so-called losers and gainers.
 c. example of apparent splice loss evaluation for unidirectional OTDR measurements has been added:
 d. description of launch and tail cords have been added;
 e. figures have been improved.