IBM DCAS-32160 - Ultrastar 2.1 GB Hard Drive, Specifications

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6.5 DC Power Requirements
Connection to the product should be made in isolated secondary circuits (SELV). The following voltage
specification is applied at the power connector of the drive.
N o special power on/off sequencing is required.
Notes:
1. Random Seeks at 51.3% duty cycle.
2. Seek Duty = 47%, W / R Duty = 53%, Idle Duty = 0%.
Figure 29. Input Voltage
During run and spin up Absolute max voltage
+ 5 Volts Supply 5V + / - 5 % 7V
+ 1 2 Volts Supply 12V + 1 0 % , - 8 % 15V
Figure 30. Power Supply Current of DCAS-34330 with SCSI Terminator Enabled
(All values in Amps.)
+5Volts +12Volts Total
(W)
Pop Mean Std.Dev Pop Mean Std.Dev
Idle Average 0.33 0.01 0.20 0.01 4.05
Idle ripple (peak-to-peak) 0.38 0.01 0.25 0.01
Seek peak (*1) 0.60 0.01 0.95 0.03
Seek average (*1) 0.41 0.01 0.32 0.02 5.90
Start up (max) 0.42 0.01 1.83 0.02
Random R / W peak (*2) 0.88 0.01 0.85 0.04
Random R / W average (*2) 0.51 0.02 0.22 0.01 5.17
Figure 31. Power Supply Current of DCAS-32160 with SCSI Terminator Enabled
(All values in Amps.)
+5Volts +12Volts Total
(W)
Pop Mean Std.Dev Pop Mean Std.Dev
Idle Average 0.32 0.02 0.15 0.01 3.42
Idle ripple (peak-to-peak) 0.37 0.02 0.19 0.01
Seek peak (*1) 0.59 0.01 0.91 0.02
Seek average (*1) 0.41 0.01 0.28 0.02 5.43
Start up (max) 0.40 0.01 1.80 0.03
Random R / W peak (*2) 0.88 0.01 0.82 0.02
Random R / W average (*2) 0.52 0.02 0.19 0.01 4.85
Specification
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