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DB35.3 Series SATA/PATA Product Manual, Rev. F
11
2.1.8 Environmental specifications
2.1.8.1 Case temperature
Actual drive case temperature should not exceed 75°C (167°F). Recommended measurement locations are
shown in Figure 3 on page 18.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 44°C (112°F) at 10,000 feet
(3,048 meters).
2.1.8.2 Temperature gradient
2.1.8.3 Humidity
2.1.8.3.1 Relative humidity
2.1.8.3.2 Wet bulb temperature
2.1.8.4 Altitude
2.1.8.5 Shock
All shock specifications assume that the drive is mounted securely with the input shock applied at the drive
mounting screws. Shock may be applied in the X, Y or Z axis.
2.1.8.5.1 Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum
operating shock of 63 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more
than two times per second.
2.1.8.5.2 Nonoperating shock
The nonoperating shock level that the drive can experience without incurring physical damage or degradation
in performance when subsequently put into operation is 350 Gs based on a nonrepetitive half-sine shock pulse
of 2 msec duration.
2.1.8.6 Vibration
All vibration specifications assume that the drive is mounted securely with the input vibration applied at the
drive mounting screws. Vibration may be applied in the X, Y or Z axis.
Operating 20°C per hour (68°F per hour max), without condensation
Nonoperating 30°C per hour (86°F per hour max)
Operating 5% to 90% noncondensing (30% per hour max)
Nonoperating 5% to 95% noncondensing (30% per hour max)
Operating 37.7°C (99.9°F max)
Nonoperating 40.0°C (104.0°F max)
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.)