Fujitsu MBB2147RC Manuel D’Utilisation
Installation Requirements
4.2
Power Supply Requirements
(1)
Allowable input voltage and current
The power supply input voltage measured at the power supply connector pin of the HDDs (receiving
end) must satisfy the requirement given in Subsection 2.1.3. (For other requirements, see Items (4)
below.)
end) must satisfy the requirement given in Subsection 2.1.3. (For other requirements, see Items (4)
below.)
(2)
Current waveform (reference)
Figure 4.6 shows the spin-up current waveform of +5V DC and +12V DC.
+5VDC
+12VDC
MBB2147RC
MBB2073RC
Cur
rent
(500m
A/
div)
Cur
rent
(500m
A/
div)
Time(2 sec/div)
Time(2 sec/div)
MBB2147RC
MBB2073RC
Cur
rent
(500m
A/
div)
Cur
rent
(500m
A/
div)
Time(2 sec/div)
Time(2 sec/div)
Figure 4.6 Current waveform (Spin-up)
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