MIL-DTL-83522E
optical transmittance shall be measured during, and after testing (see 3.5.1.2) with optical performance being verified near the end of
each plateau and after each 24 hour cycle. The connector shall be visually examined in accordance with 4.7.2 after the test.
4.8.8 Water submersion. Connector mated and unmated pair shall be tested for water pressure susceptibility as follows: The
connectors shall be immersed in water to a minimum depth of 10.4 meters (34 ft.) or equivalent depth pressure for a period of not less
than 48 hours. For the operating test (see 3.5.3.7.1), the change in optical transmittance shall be measured during the test. At the
completion of the test, the connector assemblies shall be externally cleaned, unmated, and examined for water penetration into the
connector. For the non-operating test (see 3.5.3.7.2), the unmated connector assemblies shall be cleaned and mated at the completion
of the test. The change in optical transmittance shall then be measured (see 3.5.1.2). The connector shall be visually examined in
accordance with 4.7.2 after the test.
4.8.9 Salt spray (corrosion) (see 3.5.3.8).
4.8.9.1 Temperature ranges 1 and 2. Connector mated pair shall be tested in accordance with test condition I of TIA/EIA-455-
16 with particular attention to MIL-STD-1678-3 measurement 3402 refinements. The exposure time shall be 96 hours, and the
exposure temperature 35° C. After test exposure, the assemblies shall be externally cleaned and examined under three-power
magnification for salt penetration into the connector junction area and damage to external parts.
4.8.9.2 Temperature range 2 only. Connector halves of two unmated connector pair shall be tested to TIA-EIA-455-16, test
condition C. Connector ferrule may be covered up to half way from the end face to the shoulder with plastic protective dust covers.
After test exposure, the assemblies shall be externally cleaned and examined under three-power magnification for salt penetration inot
the connector junction area and damage to external parts. An insertion loss verification test shall be performed to determine if the
optical requirement is met. Insertion loss verification shall be performed prior to and after the salt spray test.
4.8.10 Dust (fine sand) (see 3.5.3.9). With mated pairs of connectors assembled to specimen cables as specified, the connectors
shall be tested for effects of exposure to a dry dust (fine sand) laden atmosphere in accordance with method 110 of MIL-STD-202. The
following details and exceptions shall apply:
a. Failure criteria: The connectors will be considered to have failed this test if, after exposure to the blowing dust (fine sand)
and subsequent cleaning of the optical fiber surfaces (see 3.4.7), the optical performance of the connectors is degraded
beyond the limits specified in 3.5.1.2.
b. Orientation during test: The connectors shall be oriented in the test chamber so that the blowing air stream intersects the
longitudinal axis of the connector at the coupled (mated) faces. The connectors shall be rotated 90 degrees about the
longitudinal axis of the connectors, at least two times during steps 1 and 3.
c. Operation during test: The change in optical transmittance of the connectors shall be monitored during this test.
d. Step 2 waiting period: The 16-hour holding period of step 2 is not required. Step 3 may proceed immediately after
reaching temperature stabilization.
e. Examinations: The change in optical transmittance test shall be performed before dust test, before and after sample
reorientation, during each 6 hour exposure period, and after dust test. Samples shall be examined for compliance to 3.5.3.9.
If the change in optical transmittance measurements are within the limits specified during the dust test, the mated pairs of
connectors shall not be de-mated until the completion of the temperature cycling test.
4.8.11 Ozone exposure (see 3.5.3.10). When specified (see 3.1), a pair of mated connectors and an unmated cable connector
shall be tested in accordance with TIA-455-189 with the restrictions (and pretest and post test inspections) in Measurement 3404 of
MIL-STD-1678-3. When only polymeric materials used on the connector are tested (see 3.1), then any induced stress on the material
by the connector shall be simulated (see measurement 3404 of MIL-STD-1678-3).
4.8.12 Fluid immersion (see 3.5.3.11). Connector mated pair and separate polymeric samples shall be exposed to each of the
fluids specified in MIL-STD-1678-3 measurement 3409 table 3409-AI when tested in accordance with TIA/EIA-455-12. Exceptions to
the fluids in MIL-STD-1678-3 measurement 3409 table AI are that exposure shall include automotive gas for temperature range 1 and
that automotive gas, turbine fuel, and isopropyl alcohol shall be immersed for 168 hours for temperature range 1. Sample
preconditioning shall be done under ambient conditions for a minimum of 4 hours. Each connector mated pair and sample of each
polymeric shall be completely dried after each immersion. Prior to and after testing, the connector mated pair shall be visually
examined and the separate polymeric samples shall be visually and dimensionally examined (see MIL-STD-1678-3 measurement
3409).
4.8.13 Flammability (see 3.5.3.13). Connector mated pair and unmated connectors shall be tested in accordance with ECA EIA-
364-81 and as specified herein. The mated pair shall be exposed to a 0.75 inch (19 mm) flame height applied for ten seconds to the
region of the mated pair interface. The change in optical transmittance (see 3.5.1.2) shall be measured after the test sample has
returned to ambient temperature. The mated pair shall be un-mated. Two unmated connector assemblies shall be exposed to a 1.5
inch (38.1 mm) flame height applied for 60 seconds to the connector/strain relief interface region.
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