MIL-DTL-22442G
4.5.11 Jacket elongation. The elongation test shall be in accordance with FED-STD-228,
Method 3031.
4.5.12 Durometer hardness. Durometer hardness shall be measured by use of a durometer
hardness gauge acceptable to the government inspector. The tolerance shall be ± 20 Shore A
units. Tests may be performed on molded slabs 0.250 inch thick.
4.5.13 Material reversion. The molding, potting, and insulating material shall be tested
using specimens approximately 4 inches square by 1/8 inch thick. The specimens for jacketing
material shall be 6.5 inches long for a Durometer Hardness Shore A. They shall then be placed
in a chamber maintained at 212 ±1°F and 95 ±2 percent relative humidity without condensation
for 28 days. The cable assemblies shall be arranged so they do not come in contact with each
other nor with the chamber walls or floor. After conditioning, the cable assemblies shall meet
the requirements of 3.5.11.
4.6 Environmental service condition tests. The cable assemblies shall meet all specified
performance requirements when tested in accordance with the following procedures.
4.6.1 Temperature-altitude (only applicable to assemblies with active components or
transformers). The cable assembly shall be tested in accordance with MIL-STD-810,
Method 520, Procedure III, except that humidity and vibration environments shall be deleted.
Delete steps 2 through 7 and substitute the following:
Step 2. With the cable assembly nonoperating, adjust the chamber test conditions to 62 °C
and ambient pressure. The temperature shall be stabilized and maintained for at least two hours.
Step 3. With the cable assembly nonoperating, adjust the chamber temperature to 54 °C
and the altitude to 50,000 feet.
Step 4. With the cable assembly nonoperating, adjust the chamber test conditions to 10 °C
and ambient pressure. After the temperature has stabilized, the chamber door shall be opened
and the frost permitted to form on the cable assembly. The door shall remain open long enough
for the frost to melt, but not long enough to allow the moisture to evaporate.
Step 5. With the cable assembly nonoperating, adjust the chamber test conditions to +85° C
and ambient pressure. The chamber temperature shall be stabilized and maintained for at least
16 hours.
4.6.2 Salt Fog. The cable assembly shall be tested in accordance with MIL-STD-810,
Method 509.
4.6.3 Flammability. The cable assembly shall be tested in accordance with the vertical
flame test of UL-158l.
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