MIL-PRF-32517
4.6.8.2 Wet dielectric. The installed matched impedance splice shall be immersed in a
water bath as specified in 4.2.4 for at least 30 minutes. The installed matched impedance splice
shall be tested in accordance with MIL-STD-202, Method 301. The following details shall apply:
a. Dielectric withstanding voltage: See 3.4.6.
b. Electrification time: 1 minute.
c. Points of measurement: Between cable shield and water bath, between each
conductor and cable shield.
4.6.9 Vibration. A complete matched impedance splice assembly shall be mounted as
shown in figure 2 and vibrated in accordance with of MIL-STD-202, test method 204 (see
3.4.12). One lead of the matched impedance splice shall be rigidly mounted by a suitable clamp
to a test fixture securely fastened to the vibration platform. The opposite lead of the matched
impedance splice assembly shall be clamped to a stationary support so that the center of the
matched impedance splice is 6 inches from the vibration and stationary platforms, and all slack is
removed from the matched impedance splice leads with minimum tension on the matched
impedance splice assembly. The shield and center conductor shall be connected to a suitable
monitoring device. At least 100 milliamperes shall be flowing through matched impedance splice
assembly. The following conditions shall apply:
a. Test condition letter B.
b. Continuity shall be monitored during vibration with a detector capable of detecting
interruptions of 1 microsecond duration or longer, or as specified at 100 milliamperes.
6.00 inches
6.00 inches
(Minimum)
(Minimum)
Fixture
Fixture
Matched
impedance
splice
MIL-DTL-17 cable
Clamp
Vibration
Stationary
platform
platform
FIGURE 2. Vibration testing setup.
4.6.10 Heat aging. The installed matched impedance splice shall be placed in a forced-
convection oven, having a circulating air velocity of 100 to 200 feet per minute, so that the major
axis of the sleeve is vertical and no sleeve is in contact with any of the other sleeves (see 3.4.13).
The samples shall be conditioned at a temperature of 165 °C or the maximum operating
temperature of the MIL-DTL-17 cable, whichever is lower, for a period of 750 hours. After
removal from the chamber, the splices shall be stabilized (see 4.2.3).
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