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Momentus 7200.1 SATA Product Manual, Rev. B
11
• Idle and Standby timers
Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and
begins counting down from its specified delay times to zero. If the standby timer reaches zero before any
drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the
drive accepts all commands and returns to Active mode when disc access is necessary.
2.10 Environmental specifications
2.10.1 Ambient temperature
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed 65°C (149°F) within the operating ambient conditions.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.
2.10.2 Temperature gradient
2.10.3 Humidity
2.10.3.1 Relative humidity
2.10.3.2 Wet bulb temperature
2.10.4 Altitude
Operating: 5° to 55°C (41° to 131°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 30°C (86°F max)
Nonoperating 40°C (104°F max)
Operating –304.8 m to 3,048 m (–1,000 ft to 10,000+ ft)
Nonoperating –304.8 m to 12,192 m (–1,000 ft to 40,000+ ft)