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Hardware Preparation and Installation
MVME2500 Installation and Use (6806800L01H)
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2.3.2 Power Requirements
The board uses +5.0 V from the VMEbus backplane. On board power supply generates the
required voltages for the various ICs. The MVME2500 connects the +12 V and -12 V supplies
from the backplane to the PMC sites, while the +3.3 V power supplied to the PMC sites comes
from the +5.0 V backplane power. A maximum of 10 A of +3.3 V power is available to the PMC
sites, however the 90 W +5.0 V limit must be observed as well as any cooling limitations.
The following table provides an estimate of the typical and maximum power required.
Product Damage
High humidity and condensation on the board surface causes short circuits.
Do not operate the board outside the specified environmental limits.
Make sure the board is completely dry and there is no moisture on any surface before
applying power.
Table 2-2 Power Requirements
Board Variant Maximum (Calculated) Typical (Measured Operating)
MVME2500-0163 18.5 W 14.8 W
MVME2500-0161 18.5 W 14.8 W
MVME2500-0173 24 W 16.6 W
MVME2500-0171 24 W 16.6 W
MVME2500ET-0173 24 W 16.6 W
MVME2500ET-0171 24 W 16.6 W
The power is measured when the board is in standby (Linux prompt). Power will significantly
increase when adding hard drives or a XMC/PMC card.