MIL-DTL-22641F
4.6.4 Pressurization (see 3.6). With the waveguide end properly sealed, adapters shall be subjected to the internal
gas pressure specified (see 3.1) for a period of at least 20 seconds while immersed in tap water at a temperature of
approximately 20°C. Where no limits are specified (see 3.1), the internal gas pressure shall be 30 pounds per square
inch. During immersion, the adapters shall be observed for evidence of leakage as indicated by escaping air
bubbles.
4.6.5 Shock (specified pulse) (see 3.7). Adapters shall be tested in accordance with method 213, test condition G
of MIL-STD-202, with requirement of one shock applied to each of the three mutually perpendicular axes of the test
specimen. After this test, VSWR and insertion loss shall be measured as specified in 4.6.2, 4.6.2.1 and 4.6.3.
4.6.6 Vibration (see 3.8). Adapters shall be tested in accordance with method 201 of MIL-STD-202. The following
details and exceptions shall apply:
(a) Initial measurements: Not applicable.
(b) Method of mounting: Adapters shall be attached to the vibration table by a clamp. No part of the
adapter shall touch any object other than the clamp.
(c) Direction of motion: One hour in each of three mutually perpendicular directions (total of 3 hours).
(d) Final measurements: After this test, VSWR and insertion loss shall be measured as specified in 4.6.2,
4.6.7 Salt atmosphere (corrosion) (see 3.9). Unless otherwise specified (see 3.1), adapters shall be tested in
(a) Applicable salt solution: 5 percent.
(b) Test condition: A.
(c) Examination after test: Adapters shall be washed, dried, and examined for destructive corrosion or
pitting.
4.6.8 Dielectric withstanding voltage (see 3.10). Adapters shall be tested in accordance with method 301 of
MIL-STD-202. The following details shall apply:
(a) Special preparations or conditions:
(1) The temperature shall be approximately 23°C (73.4°F), the pressure shall be approximately 30 inches
of mercury absolute, the maximum relative humidity shall be 50 percent. When facilities are not
available for these specified test conditions, the adapters shall be tested at the prevailing atmospheric
conditions. In case of dispute, retest shall be made at the specified test conditions.
(2) Precautions shall be taken to prevent air-gap voltage breakdown.
(b) Magnitude of test voltage: 1500 volts root mean square instantaneously applied, except for class 5
adapters in which case 1000 volts root mean square shall be applied.
(c) Nature of potential: Alternating current.
(d) Points of application of test voltage: Between the center conductor and the outer shell of the adapter.
(e) Examination: After the test, adapters shall be examined for evidence of breakdown.
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