Dc Power Requirements; Input Voltage; Power Supply Current Of Dcas-34330 With Scsi Terminator Enabled; Power Supply Current Of Dcas-32160 With Scsi Terminator Enabled - IBM DCAS-32160 - Ultrastar 2.1 GB Hard Drive Specifications

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.
No special power on/off sequencing is required.
Figure 29. Input Voltage
+ 5 Volts Supply
+ 1 2 Volts Supply
Figure 30. Power Supply Current of DCAS-34330 with SCSI Terminator Enabled
(All values in Amps.)
Idle Average
Idle ripple (peak-to-peak)
Seek peak (*1)
Seek average (*1)
Start up (max)
Random R/W peak (*2)
Random R/W average (*2)
Figure 31. Power Supply Current of DCAS-32160 with SCSI Terminator Enabled
(All values in Amps.)
Idle Average
Idle ripple (peak-to-peak)
Seek peak (*1)
Seek average (*1)
Start up (max)
Random R/W peak (*2)
Random R/W average (*2)
Notes:
1. Random Seeks at 51.3% duty cycle.
2. Seek Duty = 47%, W/R Duty = 53%, Idle Duty = 0%.
During run and spin up
5V + / - 5 %
12V + 1 0 % , - 8 %
+5Volts
Pop Mean Std.Dev
0.33 0.01
0.38 0.01
0.60 0.01
0.41 0.01
0.42 0.01
0.88 0.01
0.51 0.02
+5Volts
Pop Mean Std.Dev
0.32 0.02
0.37 0.02
0.59 0.01
0.41 0.01
0.40 0.01
0.88 0.01
0.52 0.02
Absolute max voltage
7V
15V
+12Volts
Pop Mean Std.Dev
0.20 0.01
0.25 0.01
0.95 0.03
0.32 0.02
1.83 0.02
0.85 0.04
0.22 0.01
+12Volts
Pop Mean Std.Dev
0.15 0.01
0.19 0.01
0.91 0.02
0.28 0.02
1.80 0.03
0.82 0.02
0.19 0.01
Total
(W)
4.05
5.90
5.17
Total
(W)
3.42
5.43
4.85
37
Specification