HP E8402A, User And Service Manual, Page: 21 / 249

Getting Started 23 Chapter 1
Configuring Your Mainframe
Setting the
Enhanced Monitor
VXI Logical
Address
The Enhanced Monitor of the HP E8402 and E8404 mainframes plugs into
the VXI backplane from the rear of the mainframe. It does not occupy a slot
in the mainframe or tie-up the MODID line. The enhanced monitor is a
message-based device, allowing easy communication over the VXIbus (for
example, through a command module or embedded controller) or a standard
RS-232 interface. The enhanced monitor does require a VXIbus address;
224 is the factory default. Figure 1-4 shows the rear panel of the HP
E8402/E8404 VXI mainframe with the Enhanced Monitor logical address
switches and RS-232 interface.
Figure 1-4. Rear panel of the HP E8402 and E8404 VXI Mainframes
1 0
128
64
32
16
8
4
2
1
7
0
LADDR
32+64+128=224
CLOSED = Switch Set to 1 (ON)
OPEN = Switch Set to 0 (OFF)
RS-232
+5V EXT