MIL-DTL-22931D
26,001
to
64,000
2
64,001
to 160,000
3
160,001
to 440,000
4
440,001
to 2,200,000
5
2,200,001
and
over
8
4.4.1.4.3 Sample unit. A sample unit is a piece of cable cut from the reel of cable of the length
specified for the applicable test method.
4.4.1.4.4 Defective unit. A defective unit is any sample unit failing any test or inspection of table V.
The reel of cable from which the sample unit was taken will be considered defective.
4.4.1.4.5 Disposition of sample units. Sample units which have been subjected to group C inspection
shall not be delivered on the contract or purchase order. The reel from which the sample unit was taken
may be shipped, if the sample unit was not defective, and the lot is accepted.
4.4.1.4.6 Noncompliance. If a sample fails to pass group C inspection, the supplier shall take
corrective action on the materials or processes, or both, as warranted, and on all units of product which
can be corrected and which were manufactured under essentially the same materials, processes, etc.,
and which are considered subject to the same failure. Acceptance of the product shall be discontinued
until corrective action has been taken, group C inspection shall be repeated on additional sample units
(all inspection, or the inspection which the original sample failed, at the option of the Government). Group
A and B inspections may be re-instituted; however, final acceptance shall be withheld until the group C
re-inspection has shown that the corrective action as successful. In the event of failure after re-
inspection, information concerning the failure and corrective action taken shall be furnished to the
contracting officer.
4.4.2 Inspection of preparation for delivery. Sample packages or packs and the inspection of the
preservation, packaging, packing, and marking for shipment and storage shall be in accordance with the
requirements of section 5 and the documents specified therein.
4.4.3 Test equipment and inspection facilities. The supplier shall establish and maintain a calibration
system in accordance with NCSL Z540-3 or equivalent.
4.5 Methods of examination and test.
4.5.1 Visual and mechanical examination. The cable shall be examined to verify that the design,
construction, physical dimensions, marking, and workmanship are in accordance with the applicable
requirements (see 3.1, 3.3, 3.6, and 3.7). A micrometer caliper or an instrument of equal accuracy shall
be used to determine the proper dimensions.
4.5.2 Continuity (see 3.4.1). A direct current (dc) potential of 6 volts maximum shall be applied,
through an appropriate indicator, to the inner and outer conductors of the reel of cable. The voltage may
be applied to the conductors individually or in series.
4.5.3 Voltage withstand (see 3.4.2). The cables shall be tested in accordance with method 6111 of
FED-STD-228, except that the cable shall not be immersed in water but shall be tested dry and the use of
direct current (dc) voltage is acceptable. The following details shall apply:
a. The test shall be performed on completed cable only.
b. The test voltage shall be as specified (see 3.1).
c. The potential shall be applied to the inner conductor with the outer conductor grounded.
9
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