MIL-PRF-39012E
The following details shall apply:
a. Test condition letter (see 3.1).
b. The contact resistance tests on the center contact shall be performed before and after the
thermal shock test and examined for mechanical damage (see 3.1).
4.6.18 Moisture resistance (see 3.21). The connector shall be mated and cabled with its mating
conditions shall apply:
a. No initial measurements.
b. No load.
c.
Step 7b (vibration) shall be omitted.
d. Measurements shall be made at high humidity when specified (see 3.1).
e. The connector shall withstand the dielectric withstanding voltage specified (see 4.6.14)
after the drying period.
4.6.19 Corona level (see 3.22). The test sample shall be connected to a mating connector and
arranged in a suitable test circuit such as indicated on figure 4. Components of the test circuit shall
be corona free to the extent that a discharge of five picocoulombs or less can be measured when the
60 Hz test potential is increased to the value specified at the reduced pressure specified (see 3.1).
The type of cable and length of cable used shall be as specified (see 3.1). No grease or similar
compounds shall be used in or on the test item. After the sample is purged of air, the 60 Hz voltage
shall be slowly increased until the detector, operated at a sensitivity of five picocoulombs, indicates a
sustained corona discharge. The voltage shall then be decreased until corona is at the five
picocoulombs level or less. The latter value is the corona level of the connector under test. The
contractor may, at his own option, use a corona detector (which has been approved by the
Government) for performing the test in lieu of the test set up on figure 4.
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