Performance Characteristics
Table 6-2
Environmental Characteristics
CHARACTERISTICS
DESCRIPTION
STANDARD INSTRUMENT
Environmental
Requirements
Instrument meets or exceeds the
environmental requirements of MIL-T-28800D
for Type 111, Class 3, Style D equipment?
Temperature
Operating
-10°C to +55° C ( + 14° F to +131° F).
Non-operating
-51° C to +71° C (-60° F to +160° F).
Tested to MIL-T-28800D paragraphs
4.5.5.1.3 and 4.5.5.1.4, except in
4.5.5.1.3, steps 4 and 5 ( -10° C operating
test) are performed ahead of step 2
(-51°C non-operating test). Equipment
shall remain off upon return to room
ambient during step 6. Excessive conden
sation shall be removed before operating
during step 7.
Altitude
Operating
To 4,570 m (15,000 ft). Maximum
operating temperature decreases 1° C per
1000 ft above 5000 ft.
Non-Operating
To 15,240 m (50,000 ft).
Humidity (Operating and
Non-operating)
Five cycles (120 hours) referenced to
MIL-T-28800D paragraph 4.5.5.1.2.2,
for type III, class 3 instruments.
Non-operating and operating at 95%, -0%
to +2% relative humidity. Operating at
+30° C and +55° C for all modes of operation.
Non-operating at +30° C to +60° C.
Radiated and conducted
Emission required per
VDE 0871
Meets Category B.
Performance not checked in manual,
2245A Operators
6-13
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