CEI EN 61280-4-2 : 2015

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions, graphical symbols and
  abbreviations
4 Measurement methods
5 Apparatus
6 Procedures
7 Calculations
8 Documentation
Annex A (normative) - One-cord reference method
Annex B (normative) - Three-cord reference method
Annex C (normative) - Two-cord reference method
Annex D (normative) - Optical time domain reflectometer
Annex E (normative) - Continuous wave optical
        return loss measurement - Method A
Annex F (normative) - Continuous wave optical
        return loss measurement - Method B
Annex G (informative) - Measurement uncertainty
        examples
Annex H (informative) - OTDR configuration information
Annex I (informative) - Test cord attenuation verification
Annex J (informative) - Spectral attenuation measurement
Bibliography
Annex ZA (normative) - Normative references
         to international publications with their
         corresponding European publications

Pertains to the measurement of attenuation and optical return loss of installed optical fibre cable plant using single-mode fibre.