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Table II- Sampling for group B tests.
Test failures
Lot size number Sample size number
Reject the
to be tested
of equipment
Number allowed
lot on
o
i
3
Upto15
5
0
16 to 50
1
8
0
1
51 to 90
13
91 to 280
1
2
20
281 to 500
2
3
501 to 1200
32
4
3
4.3.4 Sampling for group C tests. - Group C tests will be required by the bureau or agency concerned
when the basic design of the equipment or the material of a vital part has been changed. One complete
equipment shall be selected and subjected to the group C tests listed in 4.4.
4.4 Quality conformance inspection. - The sample equipments selected in accordance with 4.3 shall
be subjected to the examination and tests specified in table 111. Tests shall be performed, in general, in
the order listed.
Table HI-Quality conformance inspection.
Requirement
Test
Inspection
paragraph
reference
Group A
General examination
3.3
MIL-I-983
4.6.1
Operating
3.24
Amplifier gain
4.6.2
3. 26.9
Group B
Supply line voltage
and frequency
variation
MIL-I-983
3.3
Amplifier noise and
3.26.12
4.6.7
microphonics
4.6.4 and
Overall frequency
3.26.13
response
4.6.5
Minimum sound
4.6.3
pressure
3.26.14
4.6.8
Signaling circuits
3.26.16
Group C
Shielding and radio
frequency noise
MIL-I-983
3.3
reduction
4.6.6
Amplifier endurance
3.26.15
Temperature and
MIL-I-983
humidity
3.3
Shock, vibration and
MIL-I-983
inclination
3.3
MIL-I-983
Enclosure
3.3 and
3.9
12
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