MIL-PRF-85045/15B
Minimum continuous length: The minimum continuous length of all cables shall be
not less than 0.5 km. If lengths less than 0.5 km are specified in the purchase
order, Quality Conformance Inspection shall be performed on test specimens not less
than 0.5 km in length from which the purchase order lengths are cut.
PERFORMANCE REQUIREMENTS:
Optical properties:
Maximum attenuation rate:
4.5 dB/km at 850 ± 20 nm, 2.0 dB/km at 1300 ± 20 nm
for class MM fiber.
1.0 dB/km at 1310 ± 20 nm and 1550 ± 20 nm for class
SM fiber.
Bandwidth: Fiber with a minimum bandwidth of 500 Mhz-km at 1300 nm shall be used
(multimode cables only).
Bandwidth is not specified at 850 nm.
Change in optical transmittance:
Measurements to be made at 1300 ± 20 nm.
Crosstalk:
Applicable.
Mechanical properties:
Applicable, tensile loading > 1875 N.
Tensile loading and elongation:
Operating tensile loading:
Applicable.
Cyclic flexing: 500 cycles at 25OC ± 2OC and 100 cycles at -28OC ± 2OC. Change in
optical transmittance measurements are to be made every 100 cycles for the 500
cycle exposure and every 25 cycles for the 100 cycle exposure. Each change in
optical transmittance measurement shall be performed with the test specimen in
the same position in the test cycle. The cycling may be halted to perform the
change in optical transmittance measurement.
Crush:
Applicable.
Cable twist bending: 500 cycles at 25OC ± 2OC and 100 cycles at -28OC ± 2OC.
Change in optical transmittance measurements are to be made every 100 cycles for
the 500 cycle exposure and every 25 cycles for the 100 cycle exposure. Each
change in optical transmittance measurement shall be performed with the test
specimen in the same position in the test cycle. The cycling may be halted to
perform the change in optical transmittance measurement.
Radial compression:
Applicable.
50 cycles at 25OC ± 2OC and 20 cycles at -40OC ± 2OC.
Impact:
Hosing:
Both low pressure and hydrostatic pressure are applicable.
Hydrostatic:
7.7 MPa for M85045/15-01P and M85045/15-02P.
Dripping:
Applicable.
Environmental:
Temperature range:
Operating: -28OC to 65OC.
Nonoperating: -40OC to 70OC.
Storage: -40OC to 70OC.
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