Fujitsu MPD3XXXAT manual Environmental Specifications, Acoustic noise specification

1.4Environmental Specifications

Table 1.4 lists the environmental specifications.

	Table 1.4	Environmental specifications
Temperature
•	Operating		5°C to 55°C (ambient)
			5°C to 60°C (disk enclosure surface)
•	Non-operating		–40°C to 60°C
•	Thermal Gradient		20°C/hour or less
Humidity
•	Operating		8% to 80%RH (Non-condensing)
•	Non-operating		5% to 85%RH (Non-condensing)
•	Maximum Wet Bulb		29°C
Altitude (relative to sea level)
•	Operating		–60 to 3,000 m (–200 to 10,000 ft)
•	Non-operating		–60 to 12,000 m (–200 to 40,000 ft)

1.5Acoustic Noise

Table 1.5 lists the acoustic noise specification.

Table 1.5 Acoustic noise specification

Sound Power	Model	MPD3043AT	MPD3064AT	MPD3108AT	MPD3173AT
per ISO 7779 and			MPD3084AT	MPD3130AT
ISO9296
	Idle mode
(Typical at 1m)		3.4 bels	3.5 bels	3.6 bels	3.7 bels
	(DRIVE READY)
	Seek mode (Random)	4.0 bels	4.1 bels	4.2 bels	4.3 bels
Sound Pressure	Idle mode	29 dBA	30 dBA	31 dBA	32 dBA
(Typical at 1m)	(DRIVE READY)
	Seek mode (Random)	35 dBA	36 dBA	37 dBA	38 dBA

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