The dotted lines in Figure 1 5 represent ribbon cables that interconnect the graphic drive and expansion boards.
Each expansion board can h
landle a maximum of eight rows.
Each graphic drive board has a switch package (SWl) containing eight switches. These eight switches
correspond to the eight rows the expansion board may control. A closed switch(es) on SW1 indicates the row(s)
a graphic drive board is assigned from the expansion board.
EXAMPLE:
Using Figure 15, follow the dotted lines from the expansion boards to the graphic drive boards. The circled
number(s) on the bottom of the graphic drive board represents the switch(es) that will be closed on SW1 of that
board.
EXPANSION
BOARDS
I ’
I
----em
------em
.s
---
--- l
I _
I
I
I
7
RELAY
LAMP
BD.
BD.
0
00
RELAY
BD.
0
.I.,.,
POWER
SUPPLY
c
0
N
T
R
0
L
BD.
k GRAPHIC DRIVE
BOARDS
FIGURE 16
42
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