Seagate ST800FM0012 Pulsar Serial ATA Product Manual - Page 18

Typical current profiles, Conducted noise, Note., Voltage tolerance

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2.8.1.1 Typical current profiles Figure 1. Typical 5V startup and operation current profile 2.8.2 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 250 mV peak-to-peak sine-wave injected noise at a frequency from 100Hz up to 20 MHz. Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current. 2.8.3 Voltage tolerance Voltage tolerance (including noise): 5V ±5% 12 Pulsar Product Manual, Rev. A

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12
Pulsar Product Manual, Rev. A
2.8.1.1
Typical current profiles
Figure 1. Typical 5V startup and operation current profile
2.8.2
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
250 mV peak-to-peak sine-wave
injected noise at a frequency from 100Hz up to 20 MHz.
Note.
Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write
current.
2.8.3
Voltage tolerance
Voltage tolerance (including noise):
5V ±5%