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Fabrication, setup and calibration. |
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|  MIL-C-70496(AR)
4.5.2.3.2 Fabrication, setup and calibration.
fabrication of test equipment shall be such that it incorporates
the features of rigidity, stability? and ease of maintenance.
Setup and calibration equipment necessary for certification of the
testing equipment accuracy shall be furnished and will become a
part of the testing equipment. Operating and calibration
instruction shall be prepared and submitted to the procuring
activity.
4.6 Test methods and procedures. Unless otherwise specified
in the contract, the following procedures shall be utilized to
conduct specified tests. If the contractor chooses to use
alternate test procedures, a detailed description of the set-up and
procedure shall be submitted to the government procuring agency for
approval prior to use.
4.6.1 ESS temperature. Testing equipment utilized in this
test shall conform to the requirements of 4.5.2.3.1. The supply
shall be placed in the test chamber and the temperature of the
chamber reduced 10C (18F) per minute plus or minus 10
(1.8F) from room ambient temperature (as specified in 3.3.1) to
-57C (-71F). The supply shall be maintained at this
temperature for a minimum of 20 minutes. Upon completion of the 20
minute exposure, the temperature of the chamber shall be raised
10C (18F) per minute plus or minus 10 (1.8F) to +71F
(+160C). The supply shall remain at this temperature for a
minimum of 20 minutes. Upon completion of the 20 minute exposure
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the temperature of the chamber shall be reduced 10 C (18 F) per
minute plus or minus lC (1.8F) to room ambient temperature
(as specified in 3.3.1). The aabove procedure shall be conducted a
minute of ten times. Upon completion of the cycles the supply
shall then be removed from the chamber and subjected to the tests
in 4.6.3.1 and 4.6.4 inclusive. It shall meet the requirements of
3.2.1.1 and 3.2.1.11 inclusive.
4.6.2 ESS vibration. Conduct the vibration test with the
supply positioned on an appropriate adapter affixed to a vibrating
machine that is capable of providing the amplitudes and frequencies
specified in 3.3.3. Unless otherwise specified, the test equipment
shall be in accordance with the "Test Facilities" requirements of
MIL-F-13926. The applied motion shall be in two separate planes
for the time period specified. Upon completion of the vibration
sweep the supply shall be removed from the vibration adapter and
shall be subjected to the tests in 4.6.3.1 and 4.6.4 inclusive. It
shall meet the requirements of 3.2.1.1 and 3.2.1.11 inclusive.
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