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/h 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

 

Operating

Model

MPB3021AT

MPB3032AT

MPB3052AT

 

 

 

MPB3043AT

MPB3064AT

 

mode

 

 

 

 

 

 

 

Sound Power

Idle mode

 

3.6 bels

3.7 bels

3.8 bels

per ISO7779 and ISO9296

(DRIVE READY)

 

 

 

(Typical at 1m)

 

 

 

 

 

Seek mode (Random)

4.2 bels

4.3 bels

4.3 bels

 

 

 

 

 

 

 

Sound Pressure

Idle mode

 

 

35 dBA

 

(Typical at 1m)

(DRIVE READY)

 

 

 

 

 

Seek mode (Random)

40 dBA

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Fujitsu MPB3021AT, MPB3054AT, MPB3032AT, MPB3052AT, MPB3043AT manual Environmental Specifications, Acoustic noise specification