Dell NX3230 Owner's Manual page 146

Environmental specifications
Continuous operation (for altitude less than 950
m or 3117 ft)
Fresh air
Maximum temperature gradient (operating and
storage)
Relative humidity
Storage
Operating
Maximum vibration
Operating
Storage
Maximum shock
Operating
Storage
Maximum altitude
Operating
Storage
Operating temperature de-rating
Up to 35 °C (95 °F)
35 °C to 40 °C (95 °F to 104 °F)
40 °C to 45 °C (104 °F to 113 °F)
Particulate contamination
146
10°C to 35°C (50°F to 95°F) with no direct
sunlight on the equipment.
For information on fresh air, see Expanded
Operating Temperature section.
20°C/h (36°F/h)
5% to 95% RH with 33°C (91°F) maximum dew
point. Atmosphere must be non-condensing at all
times.
10% to 80% Relative Humidity with 29°C (84.2°F)
maximum dew point.
0.26 G at 5 Hz to 350 Hz (all operation
rms
orientations).
1.88 G at 10 Hz to 500 Hz for 15 min (all six
rms
sides tested).
Six consecutively executed shock pulses in the
positive and negative x, y, and z axes of 40 G for
up to 2.3 ms.
Six consecutively executed shock pulses in the
positive and negative x, y, and z axes (one pulse
on each side of the system) of 71 G for up to 2
ms.
3048 m (10,000 ft).
12,000 m (39,370 ft).
Maximum temperature is reduced by 1°C/300 m
(1°F/547 ft) above 950 m (3,117 ft).
Maximum temperature is reduced by 1°C/175 m
(1°F/319 ft) above 950 m (3,117 ft).
Maximum temperature is reduced by 1°C/125 m
(1°F/228 ft) above 950 m (3,117 ft).