8.At power on start up error algorithms are used and may extend the time to Drive Ready to as long as 30 seconds.

4.5POWER

The Maxtor Atlas 10K V hard disk drive operates from two supply voltages:

MAXTOR ATLAS 10K IV 73.5/147.1/300 GB

+12 V

+/-10% @ Spin up, +/- 5% While running

+5 V

+/- 5%

Allowable ripple and noise for each voltage:

+12 V

800mV p-p (100 Hz to 8 KHz)

450 mV p-p (8 KHz to 20 KHz) 250 mVp-p (20KHz - 20MHz)

+5 V

250 mV p-p (100 Hz to 20MHz)

4.5.1Power Sequencing

You may apply the power in any order or manner, or open either the power or power return line with no loss of data or damage to the disk drive. However, data may be lost in the sector being written at the time of power loss. The drive can withstand transient voltages of +10% to –10% from nominal while powering up or down.

4.5.2Power Reset Limits

When powering up, the drive remains reset (inactive) until both rising Voltage thresholds reset limits are exceeded for 100 ms. When powering down, the drive resets immediately when either supply voltage drops below the falling voltage threshold.

Table 4-4Power Reset Limits1

DC VOLTAGE

THRESHOLD

+5 V

4.31/4.43v

+12 V

9.59/9.77v

Maxtor Atlas 10K V 4-5

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Maxtor 10K V manual Power Sequencing, Power Reset Limits