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4 environmental specifications – FUJITSU MHT2060AT User Manual

Page 28

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Device Overview

1-8

C141-E192-01EN

Figure 1.2 Current fluctuation (Typ.) at +5 V when power is turned on

(6) Power on/off sequence

The voltage detector circuits (the MHT 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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