Xycom XVME-240 Manual page 25

XVME-240 Manual
October, 1984
Whenever installing any external devices at connectors JKl and
JK2, the user must properly ground the external device to one
of the available module ground lines (there are two per port).
Failure to ground the external device to the module ground
could result in a voltage potential which could damage both the
external device and the DIO module.
2.6 Pl AND P2 CONNECTORS
Connectors PI and P2 are mounted at the rear edge of the board (see Figure 2-l). The
pin connections for Pl (a 96-pin, 3-row connector) contain the standard address, data,
and control signals necessary for the operation of VMEbus-defined NEXP modules.
The Pl connector is designed to mechanically interface with a VMEbus-defined Pl
backplane.
The P2 connector is a standard VMEbus P2 backplane connector (i.e., a 96-pin, 3-row
connector) designed to provide the module with +5V and ground. The
and pin-outs for connectors Pl and P2 are found in Appendix B of this manual.
2.7 DIO MODULE INSTALLATION
The XYCOM VMEbus modules are designed to accommodate typical VMEbus backplane
Figure 2-6 shows a standard VME chassis and a typical backplane
construction.
configuration. There are two rows of backplane connectors depicted here (i.e., the Pl
backplane and the P2 backplane). The DIO requires both the Pl and P2 backplane
however, the only signals used on the P2 backplane are +5V and ground.
CAUTION
2-15
definitions
signal