MIL-DTL-26518C
WIRE SIZE CORRESPONDING TO CONTACT SIZE ON ALL CONTACTS
C-CLAMP
CONNECTOR
C-CLAMP
½ X ¼ ANGLE IRON
A
8 INCH
MIN
3 ½ X 5 1/8
ADAPTER
PLATE
SECTION A - A
FIXED
A
FIXED
8 INCH
VIBRATING TABLE
WIRE
MIN
BUNDLED
MOUNTING BRACKET ¼
WELDED STEEL
CONSTRUCTION
FIGURE 2. Vibration testing equipment.
4.7.11 Physical shock (see 3.6.10). Wired connectors shall be tested in accordance with method 2004 of MIL-STD-1344, test
condition A. Receptacles shall be mounted by a method similar to the vibration tests on the sock device or carriage. Plugs shall be
engaged with the receptacles. The connectors shall be fully wired and the wire bundle or cable clamped to points that move with the
connector. A minimum of 8 inches (203.2 mm) of wire or cable shall be unsupported behind the rear of each connector.
4.7.12 Durability (see 3.6.11). The connector assemblies shall be subjected to 500 cycles of mating and unmating at a rate not
exceeding 600 cycles per hour. The mating and unmating shall be accomplished in a manner similar to subjection in service. After
500 cycles, the plug and receptacle assemblies shall pass the remaining sequence of tests.
4.7.13 Moisture resistance (see 3.6.12). The mated and wired connectors shall be subjected to a moisture resistance test in
accordance with MIL-STD-2O2, method 106, with the following exceptions and details:
a.
Step 7b, vibration not required.
b.
There shall be no drip loops in the wires.
c.
Wires shall be brought out of the chamber through vapor-tight seals.
d.
There shall be no wire splices in the chamber.
e.
Upon completion of step 6 of the final cycle, while the connectors are still subjected to high
humidity, the insulation resistance shall be measured.
f. The class H receptacles shall not have their rear portion enclosed for this test, but shall have
their rear portion blown dry before the insulation resistance test.
4.7.14 Insulation resistance.
4.7.14.1 Insulation resistance (see 3.6.13.1). The connectors shall be tested in accordance with MIL-STD-202, method 302, test
condition B. For test purposes, the resistance shall be measured separately between the closest 3 pairs of contacts, which were
inserted and removed 10 times in maintenance aging. Shielded contacts shall be measured between inner conductor and shield,
between shield and closest adjacent contact, and closest adjacent shields to shell and shell.
4.7.14.2 Insulation resistance at high temperature (see 3.6.13.2). The insulation resistance of mated connectors shall be
measured in accordance with 4.7.14.1 except that the connectors shall have been exposed to an ambient temperature of 200°C +3°C,
-0°C for a period of 30 minutes. The resistance shall be measured while the connector is at the elevated temperature.
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