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Device Overview
1-8 C141-E050-02EN
(5) Power on/off sequence
The voltage detector circuits (the MHC Series and MHD Series) monitor +5 V.
The circuits do not allow a write signal if either voltage is abnormal. These
prevent data from being destroyed and eliminates the need to be concerned with
the power on/off sequence.
1.4 Environmental Specifications
Table 1.5 lists the environmental specifications.
Table 1.5 Environmental specifications
Temperature
• Operating
• Non-operating
• Thermal Gradient
5°C to 55°C (ambient)
5°C to 60°C (disk enclosure surface)
–
40°C to 65°C
20°C/h or less
Humidity
• Operating
• Non-operating
• Maximum Wet Bulb
8% to 90% RH (Non-condensing)
5% to 95% RH (Non-condensing)
29°C
Altitude (relative to sea level)
• Operating
• Non-operating
–
300 to 3,000 m
–
300 to 12,000 m
1.5 Acoustic Noise
Table 1.6 lists the acoustic noise specification.
Table 1.6 Acoustic noise specification
Sound Pressure
• Idle mode (DRIVE READY)
30 dBA typical at 1 m