General Description
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Power Supply Limit Considerations
The MVME956AC chassis is supplied with a 550-watt, 3-output switching
power supply. The power supply is capable of higher output currents than
the interconnection to the backplane. As designed, the enc5 Vdc
output is rated at 60 amperes, the +12 Vdc output at 10 amperes (16 peak),
and the -12 Vdc output at 10 amperes.
!
Caution
The current rating for each individual output must not be
exceeded, and the total power supply output power must not
exceed 550 watts. When calculating the 5-volt current,
remember to include the backplane termination resistors.
The system integrator must ensure that the installed peripheral
devices and VME module set do not exceed the power supply
rating.
VME Bus Backplane Description and Specifications
The MVME956AC chassis contains one 12-slot, full 64-bit VME bus
backplane mounted to the left of the peripheral device area. The backplane
can accommodate up to 12 VME modules. It uses all signal and power
lines for VME bus connectors P1 and P2.
Table 1-2. 12-Slot VME Bus Backplane Specifications
Characteristics
Specifications
Power consumption
(without device
modules)
5W (1.0 A max @ +5V), required by active
termination
Connectors
Device sockets
24 sockets: 160-pin IEC1076-4_xxx 2.54mm
connectors
Socket spacing (center-to-center): 0.8 inch
