Emerson MVME2500 Manuel D’Utilisation
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.
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.
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.
increase when adding hard drives or a XMC/PMC card.