Quantum FIREBALL PLUS AS 10.2 User Manual

Specifications
Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT 4-5
4.5
4.54.5
4.5 POWER
POWERPOWER
POWER
The Quantum Fireball Plus AS 10.2/20.5/30.0/40.0/60.0 GB AT hard disk drives
operate from two supply voltages:
• +12V ±10%
• +5V ±5%
The allowable ripple and noise is 250 mV peak-to-peak for the +12 Volt supply and
150 mV peak-to-peak for the +5 Volt supply.
4.5.1
4.5.14.5.1
4.5.1 Power Sequencing
Power SequencingPower Sequencing
Power Sequencing
You may apply the power in any order, 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 –100% from nominal while powering up or down.
4.5.2
4.5.24.5.2
4.5.2 Power Reset Limits
Power Reset LimitsPower Reset Limits
Power Reset Limits
When powering up, the drive remains reset (inactive) until both rising voltage
thresholds reset limits are exceeded for ³30 ms. When powering down, the drive
becomes reset when either supply voltage drops below the falling voltage threshold
for
³ m1 ms.
Table 4-4
Table 4-4 Table 4-4
Table 4-4 Power Reset Limits
DC VOLTAGE
DC VOLTAGEDC VOLTAGE
DC VOLTAGE THRESHOLD
THRESHOLDTHRESHOLD
THRESHOLD HYSTERESIS
HYSTERESISHYSTERESIS
HYSTERESIS
+5 V V
Threshold
=
4.4V minimum
4.6V maximum
70 mV (typical)
+12 V V
Threshold
=
8.7V minimum
9.3V maximum
200 mV (typical)

Quantum FIREBALL PLUS AS 10.2 Specifications

General

Brand	Quantum
Model	FIREBALL PLUS AS 10.2
Category	Storage
Language	English