MIL-DTL-87104C
f.
Step 6: At the conclusion of the power test, subject the test sample for examination of product,
procedure II.
g.
Step 7: Subject the test sample to VSWR, procedure II.
Step 8: Subject the test sample to the applicable interface gauging test (see 4.6.3.1).
h.
4.6.4.6.3 Accept-reject criteria (see 3.5.3.8). If the assembly passes the accept-reject criteria specified in
4.6.1.2.2, 4.6.2.1.2.5, and 4.6.3.1.3, and successfully handles the specified power without damage or deterioration,
the equipment shall be considered to have passed the salt fog test.
4.6.4.7 Explosive atmosphere test (see 3.5.3.9). The explosive atmosphere test shall determine the ability of the
equipment to operate in the presence of an explosive atmosphere.
4.6.4.7.1 Test setup.
4.6.4.7.1.1 Test equipment. The apparatus as specified in MIL-STD-810, method 511.5, an RF power source, and
related instrumentation shall be required.
4.6.4.7.1.2 Test conditions. The test conditions shall be as specified in MIL-STD-810, method 511.5, procedure I,
and herein.
4.6.4.7.2 Procedural steps. The explosive atmosphere test shall be conducted in accordance with the following
steps:
Step 1: Subject the test sample to the explosive atmosphere test as specified in MIL-STD-810, method
a.
511.5, procedure I.
Step 2: Subject the test sample to rated power (see 3.5.1.8) for 1 minute at a frequency within 10 percent
b.
of the high end of the frequency range for the assembly while the assembly is being subjected to the
explosive mixture at each different altitude.
4.6.4.7.3 Accept-reject criteria (see 3.5.3.9). If the equipment causes an explosion while being energized at any of
the test altitudes, it shall be considered to have failed the explosive atmosphere test.
4.6.4.8 Flammability test ( see 3.5.3.10). The flammability test shall determine the flammability of the non-metallic
components of the assembly.
4.6.4.8.1 Test setup.
4.6.4.8.1.1 Test equipment. A flammability test chamber, a bunsen burner and related equipment, and measuring
apparatus, as applicable, shall be required.
4.6.4.8.1.2 Test conditions. The test shall be conducted under the conditions specified herein.
4.6.4.8.2 Procedure.
a.
The test sample shall be held taut at an angle of 45 degrees within a chamber approximately 2 feet by
1 foot by 1 foot (610 mm by 305 mm by 305 mm), open at top and on one vertical side that allows sufficient
flow of air for complete combustion, but is free from drafts.
b.
The test sample shall be marked at a distance of 9 and 15 inches from one end of the sample to designate
a central test length.
c.
A flame from a bunsen burner shall be applied for 30 seconds to the lower test mark.
53
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business