Seagate Archive HDD Product Manual, Rev. A
12
www.seagate.com
Drive Specifications
2.7.1.1 Typical current profiles
Archive HDD current profiles
Figure 1 Typical 5V & 12V - 6Gb/s startup and operation current profiles
2.7.2 Conducted noise
Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 volt
line or an equivalent 15-ohm resistive load on the +5 volt line.
• Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave injected
noise at up to 10MHz.
• 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 10MHz.
2.7.3 Voltage tolerance
Voltage tolerance (including noise):
• 5V ±5%
• 12V ±10%
Note
Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.
