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4 environmental specifications – FUJITSU MHR2030AT User Manual

Page 27

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1.4 Environmental Specifications

C141-E145-02EN

1-7

Figure 1.1 Current fluctuation (Typ.) at +5V when power is turned on

(5) Power on/off sequence

The voltage detector circuits (the MHR 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 1.4 lists the environmental specifications.

Table 1.4 Environmental specifications

Item

Specification

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 (Operating)
40°C (Non-operating)

Altitude (relative to sea level)

• Operating

• Non-operating

–300 to 3,000 m

–300 to 12,000 m

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