Seagate ST3400755FC, ST3300955FC manual Conducted noise immunity, Power sequencing

Models: ST3400755FC ST3300955FC

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6.2.1Conducted noise immunity

Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector.

+5 V

=

250 mV pp from 0 to

100 kHz to 20 MHz.

+12 V

=

800 mV pp from 100

Hz to 8 KHz.

450 mV pp from 8 KHz to 20 KHz.

250 mV pp from 20 KHz to 5 MHz.

6.2.2Power sequencing

The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down.

Cheetah NS FC Product Manual, Rev. B

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Seagate ST3400755FC, ST3300955FC manual Conducted noise immunity, Power sequencing