Power Supply Limit Considerations; Vme Bus Backplane Description And Specifications; Table 1-2. 12-Slot Vme Bus Backplane Specifications - Motorola MVME956AC User Manual

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 enclosure +5 Vdc
output is rated at 60 amperes, the +12 Vdc output at 10 amperes (16 peak),
and the -12 Vdc output at 10 amperes.
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,
Caution
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
Power consumption
(without device
modules)
Connectors
Device sockets
http://www.mcg.mot.com/literature
Specifications
5W (1.0 A max @ +5V), required by active
termination
24 sockets: 160-pin IEC1076-4_xxx 2.54mm
connectors
Socket spacing (center-to-center): 0.8 inch
General Description
1-5
1