User guide

Signaling level jumper (jumper MUST be set to 5.0 V)
PMC option slots
VME connectors
I/O-to-P2 signal connector
Caution
Perform the following steps gently to avoid damage to the modules.
1. Make sure the signaling-level jumper on the PMC I/O companion card is set
for 5.0 V, as show in Figure 2–14.
2. Install any user-supplied PMC options.
3. Carefully, align the ball connector on the bottom edge of the PMC I/O
companion card handle into the slot on the top edge of the Digital Alpha
VME 4 handle as shown in Figure 2–15. Note the orientation of the heat
sink.
4. Raise the PMC I/O companion card up at a slight angle from the I/O module
and slide the connecting edges together until the connector on the bottom of
the PMC I/O companion card is aligned with its mating connector on the top
side of the I/O module as shown in Figure 2–15.
Caution
You must align the connector precisely. If the alignment is not precise,
the force required for normal connector mating is sufficient to damage the
connector housing and pins.
5. Carefully press down on the module causing the two connectors to mate and
four standoffs to anchor as shown in Figure 2–15.
6. Install the Digital Alpha VME 4 module into three adjacent slots in the VME
chassis as shown in Figure 2–16.
Caution
Digital recommends that you back out the captive screws on the front
panel until they are fully engaged by the press-fit shoulder washer before
2–24 Installation Procedures