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|  MIL-T-85395(AS)
4.7 Environmental tests. The test set shall operate as required when
subjected to the tests specified in 4.7.1 through 4.7.7.
The test set shall be tested in accordance
4.7.1 Temperature - altitude.
with MIL-STD-81O Method 50 4.1, Procedure 1, including Method 504.1 paragraph
entitled Summary, except the following operating conditions shall be used in
place of table 504.1-11. Adjustment of video controls shall be allowed.
a. Step la shall be omitted.
b.
Step lb shall be at a temperature of -62C and altitude of 50,000 feet
(16,000 meters).
Step 2 shall be at a temperature of -40C and altitude at standard
c.
ambient.
d.
Step 3 shall be at a temperature of -40C and altitude of 10,000 feet
(3,000 meters).
e. Step 4 shall be omitted.
f.
Step 5 shall be at a temperature of 85C and standard ambient
altitude.
Step 6 shall be at a temperature of 55C and standard ambient
g.
altitude.
h.
Step 7 shall be at a temperature of 71C and altitude of 10,000 feet
(3,000 meters) with an equipment ON-time of 20 minutes.
i.
Step 8 thru 12 shall be omitted.
Step 13 shall be at a temperature of 88C and altitude of 50,000 feet
j.
The equipment shall be non-operating, and shall
(16,000 meters).
remain in the chamber for 4 hours.
k.
Step 14 shall be at a temperature of 25C and standard ambient
altitude.
l.
Step 15 shall be at standard ambient conditions.
4.7.2 Drip-proof. The test set shall be drip-proof tested in accordance with
The
MIL-STD-108 except the equipment shall be inclined only 15 degrees.
equipment shall be operated during and after exposure.
4.7.3 Humidity. The test set shall be humidity tested in accordance with
MIL-STD-81O Method 507.1, Procedure 1, including Method 507.1 paragraph
entitled Summary, except the maximum temperature shall be 50C.
4,7.4 Salt spray. The test set shall be salt spray tested in accordance with
MIL-STD-81O Method 509.1, Procedure 1, Including Method 509.1 paragraph
entitled Summary.
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