MIL-DTL-83538D
4.6.9 Insert retention. Unmated receptacles and buffer plugs shall be tested in accordance with test
procedure EIA-364-35. The following details and exceptions shall apply (see 3.13):
a. Force to be applied is 532 N min (120 lbs).
b. Connectors may be wired.
4.6.10 Salt spray corrosion. The wired and combined launcher receptacle/buffer plug and store
receptacle shall be mated and unmated 50 cycles at a rate of 300 cycles per hour maximum. The mating
and unmating shall be accomplished so that the connector assemblies are completely separated during
each cycle. The connectors shall then be subjected to the salt spray test in accordance with test
procedure EIA-364-26. The following details and exceptions shall apply (see 3.14):
a.
For connectors that have already been subjected to a mating/unmating test, the 50
mating/unmating cycles prior to salt spray are not required.
b.
The pretest mating/unmating cycles shall use a suitable blind-mate actuation mechanism.
c.
The MIL-DTL-83538/1 and /4 receptacle connectors shall be tested for 404 hours mated with
protective caps (MIL-DTL-83538/7 and /8 respectively). They shall then be tested for a further 48
hours mated as a complete stack (including MIL-DTL-83538/3 and /11 buffer plugs where
applicable). Finally, all connectors shall be tested for 48 hours unmated.
The MIL-DTL-83538/3 and /11 buffer plugs shall be tested for 96 hours (48 hours mated and 48
hours unmated).
d.
The connectors shall not be mounted but shall be suspended from the top of the chamber using
waxed twine or string, glass rods, or glass cord.
e.
Wire ends must be protected to prevent salt migration.
f.
A suitable fixture shall apply the holding force specified in 3.4.7.2 to hold the connector pair
together.
g.
The nickel plate on the signal components is to enhance the electrical performance
needed on internal components. Degradation of the nickel plate on the OD surfaces of the
signal set does not constitute a failure of this test.
4.6.11 Electrical engagement. The combined launcher receptacle/buffer plug and store receptacle
shall be wired so it provides a complete series circuit through all contacts of the mated connector. A
suitable power source and indicator shall be provided such that the earliest point at which the circuit is
completed, during normal connector mating, can be established (see 3.15).
4.6.11.1 Electrical engagement-store receptacle to buffer plug. Connector halves shall be slowly
mated by normal mating means until first indication of a completed circuit is observed. Means shall be
provided to assure that electrical contact is made between the pin and the spring of the socket contact,
rather than the hood of the socket contact. The mating operation shall be held at this point and the
overall connector length shall be measured from solid reference points on the connector halves. The
mating operation shall then be continued until the connector halves are in the completely mated position
by applying the holding force specified in 3.4.7.2. A second overall length measurement shall then be
taken from the same reference points. The difference of these two measurements shall be not less than
that specified in 3.15. Both the outer shield and inner conductor circuits shall be included in the test of
shielded contacts.
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