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C141-E064-03EN 4 - 13
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 IDD
(receiving end) must satisfy the requirement given in Subsection 2.1.3. (For other
requirements, see Items (4) and (5) below.)
(2) Current waveform (reference)
Figure 4.13 shows the waveform of +12 VDC.
Figure 4.13 Current waveform (+12 VDC)
(3) Power on/off sequence
a) The order of the power on/off sequence of +5 VDC and +12 VDC, supplied to the IDD,
does not matter.
b) In a system which uses the terminating resistor power supply signal (TERMPWR) on the
SCSI bus, the requirements for +5 VDC given in Figure 4.14 must be satisfied between the
IDD and at least one of the SCSI devices supplying power to that signal.
MAE series
MAG series
MAF series