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14 DB35.3 Series PATA Product Manual, Rev. C
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
75°C (167°F) within the operating ambient conditions. Rec-
ommended measurement locations are shown in Figure 6 on page 25.
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
ST3320820ACE, ST3300820ACE and ST3250820ACE
ST3500830ACE and ST3400820ACE
ST3750840ACE
0° to 65°C (32° to 149°F)
0° to 62°C (32° to 143.6°F)
0° to 60°C (32° 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.)