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|  MIL-N-81497A(AS)
(Continued)
4.5
Quantity to be Selected
Quantity of Equipments
for Life Test
Offered for Acceptance
1
First 25
1
Next 175
1
Next 300
1 for each additional 500
or fraction thereof.
Test Conditions - The life test shall be conducted
4.5.1
under the following simulated service conditions.
Normal Room
Temperature
Normal ground (0 to 5000 FT]
Altitude
Room ambient
Humidity
115 5V
AC Voltage
27.5 2.0V
DC Voltage
Test Periods - The test may be run continuously or
4.5.2
intermittently. Any period of operation shall be of sufficient duration
to permit the equipment temperature to stabilize. Periodically, the
equipment shall be turned on and off several times and put through its
various phases of operation.
Performance Check - At approximately 24 hour intervals
4.5.3
during the test, a limited performance check shall be made. The perform-
ance check proposed by the contractor shall be subjected to approval by
the procuring activity.
Test Data - The contractor shall keep the daily record
4.5.4
of the performance of the equlpment, making particular note of any de-
ficiencies or failures. In the event of part failures, the defective
part shall be replaced and the operation resumed for the balance of the
test period. A record shall be kept of all failures throughout the test
including all tube failures. This record shall indicate the following:
(1) Part type number
(2) The circuit reference symbol number
60
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