MIL-PRF-49164C(CR)
4.2.3.3 Failure criteria and test length. The tests of Table III shall be performed at least
once prior to and once after the tests of 4.2.3.1. Additional testing of Table III may be selected
by the contractor. The results of all Table III tests and any physical damage shall be used to
determine the success or failure of the reliability test. In the event of a Table III test failure, the
time interval between the preceding successful test and the failure shall not contribute to the total
cumulative hours. Testing shall continue until the total unit hours together with the total count of
relevant equipment failures permit either an accept or reject decision in accordance with Figure
6. Only equipment "on" time shall contribute to the total unit hours. No single equipment's
"on" time shall be less than one- half the average operating time of all equipment "on" test.
4.2.4 Disposition of first article samples. First article samples shall not be considered as
part of the procurement quantities (see 6.2. g).
4.3 Inspection procedures for quality assurance provisions. The postamplifier shall be
operated as specified in Section 3 at an ambient temperature of +23°C, ±5°C. Operational modes
not defined in Section 3 may be performed in the high or low power modes. The input power
shall be in accordance with 3.5.8. Unless otherwise specified, all test setup and load resistor
tolerances shall be ±5 percent.
4.4 Conformance inspection.
4.4.1 Group A inspection. Group A inspection shall be conducted at an ambient
temperature of +23°C, ±5°C on all postamplifiers operated in the high power mode following the
preconditioning of 3.8 and the inspections of 4.2.1. Group A tests listed in Table III may be
performed in any order. Failure of any test shall be cause for rejection of that unit.
TABLE III. Group A inspection.
Inspection
Requirement
Test
paragraph
paragraph
Voltage gain
3.5.3
4.5.3
Gain control
3.5.4
4.5.4
Signal bandwidth
3.5.5
4.5.5
Input power
3.5.8
4.5.8
Polarity
3.5.11
4.5.11
Output noise
3.5.14
4.5.14
4.4.2 Group B inspection. Not required.
4.4.3 Group C inspection. Group C inspection shall be conducted on postamplifiers
selected from units which have passed the tests in 4.4.1. The sample(s) shall be tested in
accordance with the inspections listed in Table IV. Samples shall be selected in accordance with
the contract (see 6.2.c). Group C tests listed in Table IV may be performed in any order.
TABLE IV. Group C inspection.
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