Environmental Specifications; Ambient Temperature; Temperature Gradient; Humidity - Maxtor STM3402111A - DiamondMax 40 GB Hard Drive Product Manual

activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive
accepts all commands and returns to Active mode when disc access is necessary.
2.9

Environmental specifications

2.9.1

Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed 69°C (156°F) within the operating ambient conditions. Rec-
ommended measurement locations are shown in See Figure 6 on page 31.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 112°F (44°C) at 10,000 feet
(3,048 meters).
Operating: 5° to 60°C (41° to 140°F)
Nonoperating: –40° to 70°C (–40° to 158°F)
2.9.2

Temperature gradient

Operating: 20°C per hour (68°F per hour max), without condensation
Nonoperating: 30°C per hour (86°F per hour max)
2.9.3

Humidity

2.9.3.1 Relative humidity
Operating: 5% to 90% noncondensing (30% per hour max)
Nonoperating: 5% to 95% noncondensing (30% per hour max)
2.9.3.2 Wet bulb temperature
Operating: 37.7°C (99.9°F max)
Nonoperating: 40.0°C (104°F max)
2.9.4

Altitude

Operating: –60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
Nonoperating: –60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)
DiamondMax 20 PATA Product Manual, Rev. A 19