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|  MIL-N-812O7A(AS)
Ambient room
Temperature
Ambient room
Humidity
Any selected frequency within
Vibration
the range of 20 to 30 cps
(excluding resonant points)
and a minimum amplitude of
2 g's.
The equipment shall be vibrated (without vibration isolators) for
a period of 10 minutes prior to the beginning of the 10-hour
period of operation. Where feasible, the equipment shall be
operated during this vibration period for the purpose of detecting
flaws and imperfect workmanship. Operation within the specified
limits of satisfactory performance is not necessarily required
during the vibration period. The direction of vibration should be
vertical to the normal mounting plane for 5 minutes and lateral to
the plane for 5 minutes. Where it is not feasible to vibrate the
equipment is 2 directions the vertical direction shall be used.
During the 10-hour period of operation following the 10-minute
vibration period, the equipment shall be mechanically cycled
periodically through its various phases of operation. Should a
failure occur, it should be repaired and the test started over,
except that the 10-minute vibration period need not be repeated
when it is certain the failure was not a result of the vibration.
Should repetitive failures occur, corrective action shall be taken
to eliminate this defect from future equipment. A record shall be
kept of all failures. The 10-hour period specified above may be
composed of two 5-hour periods to conform with standard working
hours.
Sampling Tests - Equipments selected for
4.4.2
sampling tests shall first have passed the individual tests.
Equipments shall be selected for sampling tests by the Government
inspector in accordance with the following: (Sampling tests shall
not be conducted unless Reliability Assurance Tests are deleted by
contractual action.)
Quantity to be Selected
Quantity of Equipment
for Sampling
Offered for Acceptance
0*
First 10
1
Next 10
1
Next 50
1
Next 50
1 for each additional
200 or fraction thereof
59
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