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Momentus 5400.2 SATA Removable Drive Cartridge Product Manual, Rev. C
• 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
Note. The removable drive cartridge should be stored for less than 60 days when exposed to continuous
maximum temperature and humidity conditions of 40°C (104°F) and 80% relative humidity. Exceed-
ing this duration in these conditions may result in loss of data.
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
Refer to the following two sections for relative humitidy and wet bulb terperature specifications.
2.10.3.1 Relative humidity
2.10.3.2 Wet bulb temperature
Operating 5° to 55°C (41° to 131°F)
Nonoperating –40° to 70°C (–40° to 158°F)
System storage 0° to 30°C (0° to 86°F)
Drive cartridge storage 0° to 30°C (0° to 86°F)
Operating 20°C per hour (68°F per hour max), without condensation
Nonoperating 30°C per hour (86°F per hour max), without condensation
Operating 5% to 90% noncondensing (30% per hour max)
Nonoperating 5% to 95% noncondensing (30% per hour max)
Drive cartridge storage 20% to 40% noncondensing (30% per hour max)
Operating 30°C (86°F) max
Nonoperating 40°C (104°F) max
Drive cartridge storage 25°C (77°F) max