MIL-DTL-9177C
4.6.6 Insertion and withdrawal forces (see 3.6.5). The specified mating connector (see 3.1) conforming
to the applicable specification sheet shall be used. The maximum force required to insert and withdraw
the test connector shall be measured as follows:
a. The axis of the test connector shall be alined with the axis of the mating connector;
b. A straight thrust shall then be applied gradually in a direction along the axis of the test connector
until it is completely inserted in the mating connector;
c. A straight pull shall then be applied gradually in a direction along the axis of the test connector until
it is completely separated.
conforming to the applicable specification sheet shall be used. Terminals 1 and 3 of the mating connector
shall be short circuited, terminals 2 and 4 of the mating connector shall also be short circuited. Terminals
2 and 4 of the test connector shall be connected to a current generator and an ammeter by using a
twisted pair of conductors. Terminals 1 and 3 of the test connector shall be connected, by using a twisted
pair of conductors, to a high-impedance electronic voltmeter such as Ballantine Model No. 300, or its
equivalent. The two pairs of conductors shall be as short as possible and shall be so oriented that their
axes are at right angles to each other. Terminals 1 and 4 shall be grounded. The current through the
ammeter shall be set at 2.5 ± 0.1 amperes. With the current generator set at frequencies of 200, 1,000,
5,000, and 10,000 hertz, the voltages induced into the voltmeter shall not exceed those specified in 3.6.6.
The ambient electrical noise level in the circuit with no signal shall be less than 0.01 millivolt.
4.6.8 Dielectric coupling (see 3.6.7) (see figure 3). The specified mating connector (see 3.1) conforming
to the applicable specification sheet shall be used. Terminals 2 and 4 of the test connector shall be
connected, by using a twisted pair of shielded conductors, to a voltage generator with a high-impedance
electronic voltmeter, V1, such as Ballantine Model No. 300, or its equivalent, across the voltage
generator. Terminals 1 of 3 of the test connector shall be connected, by using a twisted pair of shielded
conductors, to a 100 ohm, 5 percent resistor with another high-impedance electronic voltmeter, V2,
across the resistor. (The two pairs of conductors shall be kept as far away from each other as possible.)
The cable shields, terminals 1 and 4 shall be grounded. The voltage across voltmeter V1 shall be 15 ±
0.1 volt. With the voltage generator set at frequencies of 200, 1,000, 5,000, and 10,000 hertz, the
voltages induced into the voltmeter V2 shall not exceed those specified in 3.6.7. The ambient electrical
noise level in the circuit with no signal shall be less than 0.01 millivolt.
4.6.9 Thermal shock (see 3.6.8). Connectors shall be tested in accordance with method 107 of MIL-
STD-202. The following details shall apply:
a. The test connector shall be mated to the approved mating connector and shall remain mated
throughout the test.
b. Measurements before and after test None.
c. Test condition A.
4.6.10 Moisture resistance (see 3.6.9). Connectors shall be tested in accordance with method 106 of
MIL-STD-202. The following details and exceptions shall apply:
a. Mounting Polyvinylchloride-insulated wires conforming to the type MW of MIL-W-76 shall be
connected in the normal manner to the terminals. The connectors shall then be held in an
approximately vertical position, with the finger pointed upward, by means of a nylon cord fastened
to the sleeve, or by other suitable means simulating this condition.
b. Initial measurements The insulation resistance shall be measured with a direct-current potential of
500 volts applied between mutually insulated terminals of the connectors. The dielectric
withstanding voltage shall then be measured as specified in 4.6.5.
c. Subcycle (steps 7a and 7b) Not applicable.
d. Polarization A direct-current potential of 100 volts shall be applied between the terminals of 50
percent of the connectors. No potential shall be applied to the remaining 50 percent of the
connectors.
15
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business