BS EN 181000:1995

Foreword
Section one - General
1 General
1.1 Scope
1.2 Related document
1.3 Definitions
Section two - Requirements
2 Requirements
2.1 Classification
2.1.1 Type
2.1.2 Style
2.1.3 Variant
2.1.4 Climatic category
2.1.5 Assessment level
2.2 Minimum mandatory test sequence
2.3 Documentation
2.3.1 Symbols
2.3.2 Specification system
          Blank detail specifications
          Detail specifications
2.3.3 Drawings
          Projection system
          Dimensional system
          Intermountability
2.3.4 Measurements
          Measurement method
          Reference components
          Gauges
2.3.5 Test data sheets
2.3.6 Instructions for use
2.4 Design and construction
2.4.1 Materials
2.4.2 Workmanship
2.5 Quality
2.6 Performance requirements
2.7 Identification and marking
2.7.1 Variant identification number
2.7.2 Component marking
2.7.3 Package marking
2.8 Packaging
2.9 Ordering information
Section three - Quality assessment procedures
3 Quality assessment procedures
3.1 Primary stage of manufacture
3.2 Structural similarity
3.3 Qualification approval procedures
3.3.1 Fixed sample procedure
3.3.2 Lot-by-lot and periodic procedure
3.3.3 Sample size
3.3.4 Preparation of specimens
3.3.5 Qualification testing
3.3.6 Qualification failures
3.3.7 Maintenance of qualification approval
3.3.8 Qualification report
3.4 Quality conformance inspection
3.4.1 Lot-by-lot inspection
          Formation of inspection lots
          Rejected lots
3.4.2 Periodic inspection
          Sample size
          Preparation of specimens
          Periodic inspection
          Periodic inspection failures
          Periodic inspection report
3.5 Certified records of released lots
3.6 Delayed deliveries
3.7 Delivery release before completion of group B4
        tests
3.8 Alternative test methods
3.9 Unchecked parameters
Section four - Measurement and environmental test
                procedures
4 Measurement and environmental test procedures
4.1 Standard condition
4.2 Specimen
4.3 Cleaning of optical surfaces
4.4 Optical measurement conditions
4.5 Measurement procedures
4.5.1 Visual inspection
4.5.2 Dimensions and mass
4.5.3 Examination of product
4.5.4 Flammability
4.5.5 Insertion loss
4.5.6 Return loss
4.5.7 Wavelength dependence measurement
4.5.8 Polarization dependence of the transfer matrix
4.5.9 Change in transmitted optical power
4.5.10 Maximum input power
4.6 Environmental test procedures
4.6.1 Vibration
4.6.2 Effectiveness of fibre or ferrule retention
4.6.3 Static load
4.6.4 Pulling
4.6.5 Torsion
4.6.6 Strength of coupling mechanism
4.6.7 Bending moment
4.6.8 Bump
4.6.9 Shock
4.6.10 Crush resistance
4.6.11 Axial compression
4.6.12 Impact
4.6.13 Acceleration
4.6.14 Drop
4.6.15 Coupling proof torque
4.6.16 Mould growth
4.6.17 Cold
4.6.18 Dry heat
4.6.19 Damp heat (steady state)
4.6.20 Climatic sequence
4.6.21 Condensation
4.6.22 Change of temperature
4.6.23 Sealing (sealed branching devices)
4.6.24 Sealing (water immersion)
4.6.25 Sealing (hermetic)
4.6.26 Salt mist
4.6.27 Dust
4.6.28 Industrial atmosphere (sulphur dioxide)
4.6.29 Low air pressure
4.6.30 Solar radiation
4.6.31 Nuclear radiation
4.6.32 Mechanical endurance
4.6.33 High temperature endurance
4.6.34 Resistance to solvents and contaminating fluids
4.6.35 Cable Nutation
Annexes (informative)
A Examples of fibre optic branching device types
B Size measurements
C Summary of definitions from IEC Publications

Fibre optic branching devices are classified by wavelength divided into two sub-families; wavelength selective devices and non-wavelength selective devices.