Conducted Noise; Voltage Tolerance; Environmental Specifications; Ambient Temperature - Seagate Momentus 5400.2 SATA Product Manual

2.9.3

Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 15-ohm resistive load on
the +5 volt line.
Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave
injected noise at up to 10 MHz.
Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write
current.
2.9.4

Voltage tolerance

Voltage tolerance (including noise):
5V ± 5%
2.10

Environmental specifications

2.10.1

Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed 65°C (149°F) within the operating ambient conditions.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.
Operating: 5° to 40°C (41° to 104°F)
Nonoperating: –40° to 70°C (–40° to 158°F)
2.10.2

Temperature gradient

Operating 20°C per hour (68°F per hour max), without condensation
Nonoperating 30°C per hour (86°F per hour max), without condensation
2.10.3

Humidity

2.10.3.1 Relative humidity
Operating 5% to 90% noncondensing (30% per hour max)
Nonoperating 5% to 95% noncondensing (30% per hour max)
2.10.3.2 Wet bulb temperature
Operating 30°C (86°F max)
Nonoperating 40°C (104°F max)
2.10.4

Altitude

Operating –304.8 m to 3,048 m (–1,000 ft to 10,000+ ft)
Nonoperating –304.8 m to 12,192 m (–1,000 ft to 40,000+ ft)
10 Momentus 5400.2 SATA Blade Server Product Manual, Rev. B