Appendix A: Specifications
A-18 370B User Manual
Environmental Specification
Table A-15: Environmental Specification
Characteristic Performance Requirement
Temperature
Operating +10_Cto+40_C
NomĆOperating -20_Cto+60_C
Transportation -40_Cto+65_C
Temperature gradient
Operating
x15_C per hour (no condensation)
NonĆoperating
x30_C per hour (no condensation)
Humidity
Operating and NonĆoperating Five cycles (120 hours) with equipment tested at 80 % relative humidity. Tested onĆoperating
at 60 _C and operating to meet MILĆSTDĆ810C method 507.1 procedure IV, modified as
specified in MILĆTĆ28800B paragraph 4.5.1.1.2.
Relative Humidity
Operating 20 % to 80 % (no condensation)
Maximum wet bulb temperature shall be 29_C.
Storage 10 % to 90 % (no condensation)
Maximum wet bulb temperature shall be 40.0_C.
Transportation 5 % to 95 % (no condensation)
Maximum wet bulb temperature shall be 45.0_C.
Altitude
Operating Up to 3.0 km (10000 feet).
Maximum operating temperature decreases 1_C each 300m (1000 feet ) above 1.5 km
(5000 feet).
NonĆOperating Up to 15 km (50000 feet).
Vibration
Operating 2.352 m/s
2
(0.24 G
rms
),5Hzto500Hz
Shock (non-operating) 196 m/s
2
(20 G), halfĆsine, 11 ms duration.
Three shocks per axis in each direction (18 shocks total)
Bench handling
Operating Drop from 10 cm (4 in) tilt, or 45 _ which ever less (Tilt not to balance to point.)
Packaged transportation drop Meets the limits of the National Safe Transit Association test procedure 1A-B-2; 10 drops of
610mm(24 in).
Packaged transportation vibration Meets the limits of the National Safe Transit Association test procedure 1A-B-1 ;excursion of
25mm (1 in) at 4.63 Hz (1 .1 G) for 60 minutes.
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