Fujitsu MHD2032AT Environmental Specifications, Acoustic Noise, Environmental specifications

Device Overview

(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		5°C to 55°C (ambient)
			5°C to 60°C (disk enclosure surface)
•	Non-operating		–40°C to 65°C
•	Thermal Gradient		20°C/h or less
Humidity
•	Operating		8% to 90% RH (Non-condensing)
•	Non-operating		5% to 95% RH (Non-condensing)
•	Maximum Wet Bulb		29°C
Altitude (relative to sea level)
•	Operating		–300 to 3,000 m
•	Non-operating		–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

1-8 C141-E050-02EN