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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 for
standard models, or 64°C (147°F) within the operating ambient conditions for all models. Recommended mea-
surement locations are shown in See 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).
Operating:
0° to 60°C (32° to 140°F)
Nonoperating:
–40° to 70°C (–40° to 158°F)
2.9.2
Temperature gradient
Operating:
20°C per hour (68°F per hour max), without condensation
Nonoperating:
30°C per hour (86°F per hour max)
2.9.3
Humidity
2.9.3.1
Relative humidity
Operating:
5% to 90% noncondensing (30% per hour max)
Nonoperating:
5% to 95% noncondensing (30% per hour max)
2.9.3.2
Wet bulb temperature
Operating:
37.7°C (99.9°F max)
Nonoperating:
40°C (104°F max)
2.9.4
Altitude
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.)
Barracuda 7200.8 PATA Product Manual, Rev. D
15
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