MIL-PRF-29504B
TABLE IV.
Group C inspection.
Inspection
Requirement
Test method
Group I
4.8.2
3.5.1
Insertion loss
4.8.4
3.5.3
Return loss
Group II
4.9.11
3.6.9
Terminus insertion and removal forces
4.9.15
3.6.13
Maintenance aging
4.9.12
3.6.10
Fiber pull out force
4.9.13
3.6.11
Cable pull out force
4.9.14
3.6.12
Mating durability
Group III
4.9.10
3.6.8
Environmental/mechanical
4.7.2.1.4 Noncompliance. Requirements regarding failure of group C
inspection shall be as identified in the qualification instructions (see
6.4.2).
4.8 Optical conformance test methods. Cladding power shall be removed. In
those cases where the fiber coating does not adequately perform this function,
cladding mode strippers shall be used between the source and the terminus and
between the terminus and the detector. Multiple fibers may not be
concatenated during the measurement of change in optical transmittance or
optical discontinuity. The center wavelength of test shall be 1330 + 20 nm.
Launch conditions shall be as in table V.
TABLE V.
Light launch conditions.
Fiber type
Launch conditions
Single-mode
30 mm diameter mandrel
Multimode
Uniform overfill (initial
insertion loss only) and 70/70
restricted or equivalent
4.8.1 Equivalent test methods. The use of equivalent test methods is
allowed provided the preparing activity and the qualifying activity have
approved the use of that equivalent test method by that manufacturer (see
6.3.5).
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