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|  MIL-R-48442(MU)
potential as defined in 3.7.2. Each spike shall be applied for a two
minute period with an interval of ten seconds for a total of 12 spikes.
Subsequently the regulator shall meet the other requirements of 3.7.
4.6.4.3 Output current.- The regulator shall be connected as speci-
fied in 4.6.3, and shall be capable of delivering 45 ma as the output
load is varied for full load in compliance with 3.7.3.
4.6.4.4 Output voltage.- The regulator shall be connected as speci-
fied in 4.6.3. The output voltage shall meet the requirement of 3.7.4
as the input voltage is varied from 18 Vdc to 30 Vdc.
4.6.4.5 Emergency power source.- This test shall be performed in
conjunction with 4.6.4.1 to meet the requirements of 3.7.5.
4.6.4.6 Rise time.- The regulator shall be connected as specified
in 4.6.3 and the test shall be performed in conjunction with 4.6.4.1.
At all times the D.C. power supply is switched from "off" to "on" the
output shall be at least 95% of the final value specified in 3.7.4 in
less than 3.0 mini seconds as measured on a dual trace, storage oscillo-
scope or equivalent to meet the requirements of 3.7.6.
4.6.5 Reliability .- A reliability demonstration test shall be con-
ducted as part of first article test (FAT) to assure compliance with
3.8. A minimum of two hours on each of the ten first article samples
shall be accumulated after/during exposure to each non-operating /op-
erating environments of paragraph 3.5. Additional operation may be
required at 75 15F in order to accumulate a minimum of 120 hours
on each of the ten first article samples. The regulators shall be tested
until the total accumulated hours meet the accept/reject criteria of
Table IV.
TABLE IV
ACCUMULATED HOURS
ACCEPT NO.
REJECT NO.
1204
0
4
2439
1
4
3615
2
4
4762
3
4
4.6.5.1 Data collection.- Data collected will consist of all equip-
ment malfunctions, number of hours and lasings completed when malfunction
occurred, nature and cause of malfunction, time required to correct mal-
function, required corrective action, item serial number and environ-
mental exposure.
4.6.5.2 Failure definition.- A failure is defined as any malfunc-
tion which renders the regulator inoperative or operative outside the
limits of this specification. In determination of chareable reliability
failures the following clarification shall apply:
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