Technical data

8
8-1
8VMEbus Backplane
This chapter provides information about the VME backplane
installed in the system. The backplane performs these two functions
❏ Interconnects VMEmodules and transition modules
❏ Distributes operating voltages from the power supply
modules to the cooling fans and (if installed) mass storage
modules
Description
3-Slot Backplane
The backplane (see Figure 8-1 on page 8-2)is fully assembled with
connectors and terminators. The front side has three connectors on
the right side to receive connector P1 of the VMEmodules and
another set of 3 connectors on the left side to receive VMEmodule
expansion connector P2. In addition, the front side has a pair or
connectors at the top to support two drive modules. Thus, the
backplane can accommodate up to three double-high 6U
VMEmodules containing both P1 and P2 connectors, as well as a
pair of mass storage modules. An autojumpering feature eliminates
the need for daisy-chain jumpering between connector sockets.
The P2 connectors are duplicated on the reverse side of the
backplane to accommodate MVME700 series plug-in transition
modules. Two transition module connectors, designated XP1A and
XP1B, are provided for the CPU module.