MIL-DTL-15370J
TABLE V. Group B inspection.
Requirement
Test
Sample
Test
paragraph
paragraph
size
2
Effective directivity - - - - - - - - -
2
VSWR - - - - - - - - - - - - - - - - -
4.7.16
2
Thermal shock - - - - - - - - - - - -
VSWR - - - - - - - - - - - - - - - -
Insertion loss - - - - - - - - - - - -
3.12
2
Shock - - - - - - - - - - - - - - - - - -
VSWR - - - - - - - - - - - - - - - -
Insertion loss - - - - - - - - - - - -
3.17
2
Moisture resistance - - - - - - - -
VSWR - - - - - - - - - - - - - - -
Insertion loss - - - - - - - - - - -
4.6.1.3.1 Sampling plan. The group B sampling plan shall be as specified in table V.
4.6.1.3.2 Rejected lots. If an inspection lot is rejected, the supplier may rework it to correct the defects, or screen
out the defective units, and resubmit for re-inspection. Resubmitted lots shall have all devices re-inspected. Such
lots shall be separate from new lots, and shall be clearly identified as re-inspected lots. Resubmitted lots indicating
device failures shall constitute a rejected lot.
4.6.1.3.3 Disposition of sample units. Sample units which have passed group B inspection (with exception of
moisture resistance) may be delivered on the contract or purchase order if the lot is accepted and the sample units
are still within specified electrical tolerances. Group B samples delivered shall be labeled as such and classified as
"non-flight" hardware.
4.6.1.3.4 Certification. The acquiring activity may accept a certificate of compliance in lieu of group B inspection.
4.7 Methods of inspection and test.
4.7.1 Visual and mechanical inspection (see 3.1, 3.4, 3.21, and 3.22). Directional couplers shall be inspected to
verify that the materials, design, construction, physical dimensions, marking, and workmanship are in accordance
with the applicable requirements.
4.7.3 Visual and mechanical inspection. Visual and mechanical inspection of directional couplers shall be as
specified in 4.7.1.
4.7.4 Thermal shock. With the connections uncovered, directional couplers shall be tested in accordance with
method 107 of MIL-STD-202. The following details and exception shall apply:
a.
Mounting: When applicable, directional couplers may be mounted on a heat sink.
Test condition: B, except the temperature extremes shall be those specified (see 3.1), and the number of
b.
cycles shall be 10 (either one or two chamber method may be used. Directional couplers shall be
positioned so that they are exposed to freely circulating chamber air.
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