MIL-DTL-25547C
TABLE V. Group A inspection.
Examination or test
Requirement
Method
paragraph
paragraph
4.6.1
3.2, 3.3,
Visual and mechanical
3.24 and 3.25
examination
4.6.2
3.4
Voice coil impedance
4.6.3
3.5
Voice coil polarity
4.6.10
3.12
Acoustic quality
TABLE VI. Sampling plan.
*
Lot size
Sample size
2 to
13
1/
14 to 150
13
20
151 to 280
29
281 to 500
34
501 to 1200
42
1201 to 3200
1/ Indicates entire lot must be inspected. In no case will the sample
size exceed the lot size.
4.5.1.2.2 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 reinspection. Resubmitted lots shall be inspected using tightened inspection.
Such lots shall be separate from new lots, and shall be clearly identified as reinspected lots.
4.5.1.3 Group B inspection. Group B inspection shall consist of the tests specified in table VII and shall be made on
sample units which have been subjected to and have passed group A inspection.
4.5.1.3.1 Sampling plan. The sampling plan shall be accept on zero, as specified in table VI.
4.5.1.3.2 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 reinspection. Resubmitted lots shall be inspected using tightened inspection.
Such lots shall be separate from new lots, and shall be clearly identified as reinspected lots.
TABLE VII. Group B inspection.
Requirement
Method
Test
paragraph
paragraph
4.6.5
3.7
Sensitivity
4.6.6
3.8
Frequency response
4.6.7
3.9
Directional characteristics
4.6.9
3.11
Distortion
4.6.11
3.13
Dielectric withstanding voltage
4.5.1.3.3 Disposition of sample units. Sample units which have passed all the group B inspection may be delivered
on the contract or purchase order, if the lot is accepted.
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