Hitachi DK23BA-20 Owners Manual - Page 13

Specification Summary, 1 Principal Specifications, DK23FB-60, DK23FB-40, DK23FB-20 - noise

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3.0 Specification Summary 3.1 Principal Specifications Table 3.1 Principal Specifications Specifications No. Item DK23FB-60 DK23FB-40 DK23FB-20 Units 1 Capacity per drive (Formatted) 60.011 40.007 20.003 GB Capacity per sector 512 Bytes Disks 2 1 Heads 4 3 2 Cylinders 42518 2 Seek time Average 13 *1 ms (Nominal Maximum 24 *1 ms value) Minimum 3 ms 3 Average latency 5.6 ms Disk rotational speed 5,400 RPM 4 Recording density (Max.) 27.6 (702) 25.1 (639) Mbpm(kBPI) Track density Recording method 3.35 (85.0) ME2PRML, ID-Less format Mtpm(kTPI) 5 Interface ATA-5(IDE) Data transfer rate (Disk-Buffer) 32.9 - 50.2 30.0 - 45.5 MB/sec Data transfer rate (Host-Buffer) Max. 16.6 MB/sec (PIO mode 4/ Multiword DMA mode 2) Max. 100 (Ultra DMA mode 5) MB/sec Buffer size 8,192 kB 6 Power on - Ready *2 5 (Typical) *3 sec Sleep/Standby - Ready *2 3 (Typical) *3 sec 7 Dimensions•W×H×D• 70W×9.5H×100D mm Weight (Approximate value) 8 DC Power Requirements *4 (Typical) 95 +5v ± 5% Ripple noise - Start up *5 - Idle *6 91 100mvp-p or less 0.9 A(4.5W) 0.17 A(0.85W) grams - Active Idle 0.22A(1.10W) - Low Power Active *7 0.35 A(1.75W) -Seek *8 0.45 A(2.25W) - Read/Write *9 0.40/0.42 A(2.0/2.1W) - Standby 0.03 A(0.15W) - Sleep 0.02 A(0.1W) K6610007 Rev.5 02.14.'03 - 13 -

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K6610007
Rev.5
02.14.’03
- 13 -
3.0 Specification Summary
3.1 Principal Specifications
Table 3.1
Principal Specifications
Specifications
No.
Item
DK23FB-60
DK23FB-40
DK23FB-20
Units
1
Capacity per drive (Formatted)
60.011
40.007
20.003
GB
Capacity per sector
512
Bytes
Disks
2
1
Heads
4
3
2
Cylinders
42518
2
Seek time
Average
13
*1
ms
(Nominal
Maximum
24
*1
ms
value)
Minimum
3
ms
3
Average latency
5.6
ms
Disk rotational speed
5,400
RPM
4
Recording density (Max.)
27.6 (702)
25.1 (639)
Mbpm(kBPI)
Track density
3.35 (85.0)
Mtpm(kTPI)
Recording method
ME
2
PRML, ID-Less format
5
Interface
ATA-5(IDE)
Data transfer rate (Disk-Buffer)
32.9 - 50.2
30.0 - 45.5
MB/sec
Data transfer rate (Host-Buffer)
Max. 16.6
MB/sec
(PIO mode 4/ Multiword DMA mode 2)
Max. 100 (Ultra DMA mode 5)
MB/sec
Buffer size
8,192
kB
6
Power on - Ready
*2
5 (Typical)
*3
sec
Sleep/Standby - Ready
*2
3 (Typical)
*3
sec
7
Dimensions
•
W
×
H
×
D
•
70W
×
9.5H
×
100D
mm
Weight (Approximate value)
95
91
grams
8
DC Power Requirements
*4
(Typical)
+
5v
±
5% Ripple noise
100mvp-p or less
- Start up
*5
0.9 A(4.5W)
- Idle
*6
0.17 A(0.85W)
- Active Idle
0.22A(1.10W)
- Low Power Active
*7
0.35 A(1.75W)
-Seek
*8
0.45 A(2.25W)
- Read/Write
*9
0.40/0.42 A(2.0/2.1W)
- Standby
0.03 A(0.15W)
- Sleep
0.02 A(0.1W)