SN EN 61280-4-1 : 2004

1 Scope
2 Normative references
3 Apparatus
  3.1 Light sources
  3.2 Safety
  3.3 Optical power measurement equipment
  3.4 Test jumpers
  3.5 Miscellaneous equipment
4 Test sample
5 Procedure
  5.1 General procedure
  5.2 Method 1 - Two-jumper reference
  5.3 Method 2 - One jumper reference
  5.4 Method 3 - Three jumper reference
6 Calculations
  6.1 Calculation of results
  6.2 Precision and bias
      6.2.1 Precision
      6.2.2 Bias
7 Documentation
  7.1 Required information
  7.2 Available information
  7.3 Specifying information
Annex A (normative) Coupled power ratio measurement for
                      fibre-optic sources
Annex B (informative) Recommendations on the use of this
                      part of IEC 61280
Annex C (informative) Coupled power ratio measurement for
                      fibre-optic sources - Background
                      information
Annex ZA (normative) Normative references to international
                      publications with their corresponding
                      European publications
Bibliography

Establishes preferred measurement principles and practices to assure that meaningful data describing the optical loss performance of installed cable plants can be obtained.