PREN 4532 : 200P1

1 Scope
2 Normative references
3 Terms and definitions
4 Description
   4.1 Construction of type 'A' primary fibre (Jacketed
        fibre)
   4.2 Construction of type 'B' single core cable
5 Cable characteristics
   5.1 Optical performance of cable
        5.1.1 Optical isolation of cable jacketing
        5.1.2 Useful installed lifetime
        5.1.3 Mean time between failure (MTBF)
   5.2 Construction data of cable (Type B)
        5.2.1 Sheath colour
        5.2.2 Cable design
   5.3 Mechanical characteristics of cable (Type B)
6 Fibre characteristics
   6.1 Optical and material data of primary fibre
        6.1.1 Fibre type
        6.1.2 Refractive index difference of core/cladding
        6.1.3 Numerical aperture (Theoretical)
        6.1.4 Fibre core material composition
        6.1.5 Cladding material composition
   6.2 Geometrical data of primary fibre and concentricity
        of primary coating
7 Environmental conditions
   7.1 Temperature range
   7.2 Operating pressure range
   7.3 Humidity
        7.3.1 Operating humidity
        7.3.2 Storage humidity
   7.4 Nuclear radiation
8 Production acceptance (routine) tests
   8.1 General
        8.1.1 Measurement conditions
        8.1.2 Recovery conditions
        8.1.3 Declaration of design and performance
   8.2 Group A - Production acceptance (routine) tests
        8.2.1 Acceptance tests
        8.2.2 Primary fibre (for cable types 'A' and 'B')
        8.2.3 Completed cable (Type B)
   8.3 Group B production verification (quality) tests
   8.4 Group D qualification approval tests (cable type 'B')
9 Additional test information
   9.1 Repeatability of test results
   9.2 Definition of full launch conditions
   9.3 Full launch techniques
   9.4 Additional requirements
   9.5 Practical realisation
   9.6 Test arrangement for low- and high- temperature tests
10 Marking and packaging requirements
   10.1 Designation of type 'A' primary fibre
   10.2 Designation of type 'B' cable
   10.3 Marking of cable
        10.3.1 General
        10.3.2 Requirements for packaging and labelling
   10.4 Ordering information
   10.5 Cable length
   10.6 Storage reel

Covers two cable types, Type A and Type B: - Type A, jacketed fibre, is intended for printed circuit board inter-connection applications inside equipment; - Type B, single core, is intended for general airframe and equipment inter-connection cable suitable for installation in all aircraft locations, with exception of power plant compartments.