18 DiamondMax 21 PATA Product Manual, Rev. A
2.9 Environmental specifications
2.9.1 Ambient temperature
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed
69°C (156°F) within the operating ambient conditions. Rec-
ommended measurement locations are shown in See Figure 6 on page 29.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 112°F (44°C) at 10,000 feet
(3,048 meters).
2.9.2 Temperature gradient
2.9.3 Humidity
2.9.3.1 Relative humidity
2.9.3.2 Wet bulb temperature
2.9.4 Altitude
Operating: 5° to 60°C (41° to 140°F)
Nonoperating: –40° to 70°C (–40° to 158°F)
Operating: 20°C per hour (68°F per hour max), without condensation
Nonoperating: 30°C per hour (86°F per hour max)
Operating: 5% to 90% noncondensing (30% per hour max)
Nonoperating: 5% to 95% noncondensing (30% per hour max)
Operating: 37.7°C (99.9°F max)
Nonoperating: 37.7°C (99.9°F max)
Operating: –60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
Nonoperating: –60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)
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