at +140°F and -4°F. Subsequent to such exposure the Display shall not
have been damaged or adversely affected and shall meet electrical per-
formance requirements of this specification at standard room ambient
18.104.22.168.2.1 Operating.- The display shall be capable of meeting
the performance requirements of this specification while exposed to an
atmosphere with a relative humidity (R.H) of 94 ± 4 percent at a temper-
ature of 86°F.
22.214.171.124.2.2 Non-operating. - The Display shall be capable Of With-
standing 240 hours of continuous exposure to a relative humidity (RH) of
94 ±4 percent at temperature cycling of from 73°F to 1400F.
126.96.36.199.3 Shock. The Display shall be capable of withstanding
three 10G, 11 milliseconds shock in each of its mutually perpendicular
axis for a total of 18 shocks.
188.8.131.52.4 vibration.- The Display shall be capable of Withstanding
a vibration having a double amplitude of 0.076 in. and acceleration
levels of from 2 to 4G applied logarithmically over the 5 to 500 Hz
frequency range for a 15 minute time duration.
184.108.40.206.5 Salt fog. - The Display shall be capable of withstanding
forty-eight (48) hours of continuous exposure to a 5% salt solution
with a specific gravity of 1.027 to 1.034, a PH of 6.5 to 7.2 and a
temperature of 95°F.
220.127.116.11.6 Sand and Dust.- The Display shall be capable of operation
after thirty six hours of exposure to wind driven sand and dust.
18.104.22.168.7 Rain. - The Display shall be capable of operation after
exposure to a 2in/hr, 20Mph wind driven rain. The water temperature shall
be between 60 and 90°F.
22.214.171.124.6 Altitude. - The Display shall be capable of operating
during exposure at an altitude of 10,000 ft. after exposure at an altitude
of 50,000 ft.
126.96.36.199.9 Fungus. - The Display shall be capable of withstanding
a twenty-eight (28) day fungus exposure to a composite spore suspension.
188.8.131.52.10 EMI. - The Display shall meet the requirements of MIL-STD-
461A subtest RE02.
3.4 Design and Construction
3.4.1 Composition.- To the maximum extent practical, the equipment
shall consist of solid-state circuitry mounted on printed circuit cards.