Seagate ST950011FS, ST9200011FS manual Typical current profiles, Conducted noise, Voltage tolerance

2.8.1.1Typical current profiles

Figure 1. Typical 5V startup and operation current profile

2.8.2Conducted 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.

2.8.3Voltage tolerance

Voltage tolerance (including noise):

5V ±5%

12 Pulsar Product Manual, Rev. A