c. Special tests (see 4.5.4)
Life tests (see 4.5.6)
Each test set made available for acceptance shall be
4.5.1 Individual tests.
These tests shall be adequate to determine
subjected to the individual tests.
compliance with the requirements of material, workmanship, operational
adequacy and reliability. As a minimum, each test set accepted shall have
passed the following tests:
Examination of product (see 126.96.36.199)
Operational test (see 4.5.l.2)
Manufacturing run-in test (see 188.8.131.52)
Examination of product. Each test set shall be examined carefully to
determine that the material and workmanship requirements have been met.
184.108.40.206 Operational test.
Each test set shall be operated long enough to
permit the temperature to stabilize and to check sufficient characteristics
and record adequate data to assure required test set operation.
Each test set shall be operated under the
220.127.116.11 Manufacturing run-in test.
conditions specified herein for a period of six hours without failure. A
failure shall be defined as anything which causes malfunctioning of the
Only those adjustments will be permitted which can be made using
controls that are accessible to the operator during normal use of the
Any selected frequency within the range
of 20 to 30 Hz (excluding resonant
points) and a minimum amplitude of 3
The test set shall be vibrated (without vibration isolators) for a period of
10 minutes prior to the beginning of the six-hour period of operation. Where
feasible, the test set shall be operated during this vibration period for the
purpose of detecting flaws and imperfect workmanship. Operation within the
specified limits of required performance is not necessarily required during
the vibration period. The direction of vibration shall be vertical to the
normal mounting plane for five minutes and lateral to the plane for five min-
Where it is not feasible to vibrate the test set in two directions, the
During the six-hour period of operation following the
vertical shall be used.
10-minute vibration period, the test set shall be mechanically cycled
periodically through its various phases of operation. Should a failure occur,
the test set shall be repaired and the test started over, except that the
13-minute vibration period need not be repeated when it is established that
the failure was not a result of vibration. Should failures occur repeatedly,
corrective action shall be taken to eliminate this defect from future test