MIL-PRF-31031B
4.6.20 RF high potential withstanding voltage (see 3.23). Connectors shall be mated with their mating
appropriately attached. This assembly shall then be inserted into the high impedance circuit as shown on
figure 4, or equivalent, and instantaneously subjected to the RF voltage and frequency specified (see 3.1)
between the center contact and the body of the connectors. The duration of the test shall be 1 minute.
The RF voltage source shall be frequency stabilized and have an approximate pure sine wave output with
minimum harmonic content. Means shall be provided to indicate disruptive discharge and leakage
current. The maximum leakage current shall be as specified (see 3.1).
FIGURE 4. Circuit diagram for RF high potential withstanding voltage.
4.6.21 Cable retention force (see 3.24). When applicable (see 3.1), the connector shall be assembled
to its standard mating test cable. The connector shall be firmly fixed and a movable sleeve attached to the
cable. The sleeve is then moved longitudinally away from the fixed connector gradually and in such a
manner that the cable remains unbent and untwisted. A scale for measuring the retention force (see 3.1)
shall be attached to the sleeve. The force shall be held for 30 seconds minimum. The assembly shall then
be examined for mechanical failure, loosening, or rupture and tested for continuity with a simple 115 volt,
60 Hz ac lamp circuit. With the connector still in the fixed position, the cable shall be held at a point ten
times the diameter of the cable from the connector and a torque shall be applied in both directions as
specified (see 3.1). The cable shall then be bent at a radius of 10 times the diameter of the cable starting
at the connector at an angle of 90° ± 5° from the axis of the connector, then reversed 180° ± 10°. Repeat
this procedure four times, then retest and reexamine as outlined above.
4.6.22 Coupling mechanism retention force (see 3.25). The connector body and coupling mechanism
shall be respectively secured to the lower and upper jaws of a tensile tester in an appropriate manner. A
tensile load shall be applied at a rate of approximately 445 N/minute (100 pounds/minute) up to the force
as specified and held at that value for one minute (see 3.1). During the one minute of steadily applied
force, the coupling mechanism shall be rotated with respect to the connector body, two full revolutions in
each direction.
4.6.23 Shielding effectiveness (see 3.26). The connector shall be subjected to test procedure EIA 364-
66. Since the connector under test has a 50-ohm interface, there shall be no modification to the connector
interface.
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