MIL-PRF-49173B(CR)
TABLE III. Group A inspection.
Inspection
Requirement paragraph
Test paragraph
Modulation transfer function
3.5.4
4.5.4
Flange focal distance
3.5.6
4.5.6
4.3.2.2 Group B inspection. Not required.
4.3.2.3 Group C inspection. Group C inspection shall be conducted on imagers selected
from units which have passed the tests in 4.3.2.1. The sample(s) shall be tested in accordance
with the inspections listed in Table IV. Samples shall be selected in accordance with 4.3.2.3.1.
Group C tests listed in Table IV may be performed in any order. Failure of any requirement shall
be cause for rejection of that unit.
4.3.2.3.1 Sampling for Group C inspection. Group C inspection samples shall be selected
from monthly lots in accordance with ANSI/ASQC Z 1.4 and as specified in the contract (see
6.2.f).
TABLE IV. Group C inspection.
Inspection
Requirement paragraph
Test paragraph
Equivalent focal length
3.5.1
4.5.1
Relative illumination
3.5.5
4.5.5
Optical transmittance
3.5.8
4.5.8
Deviation
3.5.9
4.5.9
Temperature shock
3.6.1
4.6.1
Vibration
3.6.5
4.6.5
4.3.2.3.2 Group C failures. Actions required relative to group C failures shall be as
specified in the contract (see 6.2).
4.3.2.3.3 Disposition of Group C samples. Group C samples shall be accepted on contract
subsequent to the tests of Table III.
4.4 Examination. Each imager shall be examined for compliance with the requirements
specified in 3.3 through 3.9. Any redesign or modification of the contractor's standard product
to comply with specified requirements or any necessary redesign or modification following
failure to meet the specified requirements shall receive particular attention for adequacy and
suitability. This element of inspection shall encompass all visual examinations and dimensional
measurements. Noncompliance with any specified requirements or presence of one or more
defects preventing or lessening maximum efficiency shall constitute cause for rejection.
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