I-ETS 300 781 : FEB 98

Foreword
1 Scope
2 Normative references
3 Definition
4 Tests
  4.1 Visual Inspection
  4.2 Attenuation
  4.3 Return loss
  4.4 Spectral dependence of attenuation
  4.5 Polarization sensitivity
  4.6 Directivity
  4.7 Vibration
  4.8 Cable pulling
  4.9 Torsion
  4.10 Drop
  4.11 Fibre nutation
  4.12 Cold
  4.13 Dry heat
  4.14 Damp heat (steady state)
  4.15 Damp heat (cyclic)
  4.16 Change of temperature
  4.17 Corrosive atmosphere (salt mist)
  4.18 Industrial atmosphere
  4.19 Dust
  4.20 Condensation
  4.21 Water immersion
5 Acceptance criteria
  5.1 Attenuation and return loss
  5.2 Other optical, environmental and mechanical
      requirements
  5.3 Pass/fail criteria
History

This Interim European telecommunications Standard (I-ETS) applies to balanced fibre branching devices to be used in single mode optical transmission networks. Unbalanced fibre branching devices should also satisfy similar mechanical and environmental requirements. The scope is to establish minimum uniform requirements for the following aspects: Optical, environmental and mechanical properties; - test conditions; - acceptance criteria. Some users may have additional specific requirements, such as a need to verify performance at lower temperatures. A fibre branching device is "A passive optical component which splits the incoming signal (M) to a number of outputs (N).