6.0Physical/electrical specifications
This section provides information relating to the physical and electrical characteristics of the Cheetah 10K.7 SCSI drive.
6.1AC power requirements
None.
6.2DC power requirements
The voltage and current requirements for a single drive are shown in the following tables. Values indicated apply at the drive power connector. The table shows current values in Amperes.
Table 2: | DC power requirements |
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| ST3300007 |
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| Notes |
| SE mode |
| LVD mode | ||
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Voltage |
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| +5 V |
| +12 V | +5 V |
| +12 V |
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Regulation |
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| [5] | ±5% |
| ±5%[2] | ±5% |
| ±5%[2] |
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Average idle current DC |
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| [1][7] | 0.54 |
| 0.62 | 0.54 |
| 0.62 | |
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Maximum starting current |
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(peak DC) DC | 3σ | [3] | 0.77 |
| 1.91 | 0.77 |
| 1.91 | |||||
(peak AC) AC |
| 3σ | [3] | 1.16 |
| 3.71 | 1.16 |
| 3.88 | ||||
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Delayed motor start (max) DC 3σ | [1][4] | 0.52 |
| 0.06 | 0.53 |
| 0.06 | ||||||
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Peak operating current |
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DC |
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| [1][6] | 0.69 |
| 1.07 | 0.68 |
| 1.09 | ||
Maximum DC | 3σ | [1] | 0.70 |
| 1.08 | 0.69 |
| 1.10 | |||||
Maximum (peak) DC | 3σ |
| 1.62 |
| 2.74 | 1.62 |
| 2.76 | |||||
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Cheetah 10K.7 SCSI Product Manual, Rev. D | 25 |
