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412-Slot VMEbus Backplane
Overview
This chapter provides a physical and electrical description of the 12-slot
VME bus backplane used in the MVME956AC chassis. Refer to
1
for features and specifications of the backplane. Refer to
removal and replacement procedures.
Physical Description
The backplane was designed to accommodate VME modules and disk
drive units. It accommodates up to 12 double-high user VME modules
containing both P1 and P2 connectors. The backplane is fully assembled
with connectors and terminators. It contains:
Backplane Power
VME modules that plug into the backplane require voltages of +5 Vdc,
+12 Vdc, and -12 Vdc for operation. The MVME956AC chassis contains
a power supply and wiring that provide these voltages to the backplane.
The power connectors characteristics and the number and arrangement of
their pins are summarized in Figure 4-1 on page 4-4.
12 connectors on the top row to receive connector P1 of the VME
modules
12 connectors on the bottom row to receive VME module expansion
connector P2
4
Chapter
Chapter 6
for
4-1
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