Inc. Active Module Carrier User's Manual
 18
3.4 SUMBUS CONFIGURATION 
The  VX402C-64 provides a direct connection of the SUMBUS signal through the pass-through 
connector to the front connectors.  The board also has a prototyping area so that the user can 
hardwire a custom buffer for the SUMBUS signal. 
3.4.1 SUMBUS CUSTOM AREA 
The  SUMBUS custom  area  consists  of  a  prototyping grid,  ±12V supplies,  and  two  jumpers for 
configuring the signal.  The prototyping area is a 10x10 grid of 0.1” spaced through-hole pads 
which can be used in any way desired. The SUMBUS signal can be wired to the prototyping area 
using  the  two  pads  next  to  jumpers J21 and  J13,  and  the  jumpers  must  be  configured  to  the 
proper setting.  The location of the custom area can be seen in Figure 9. 
J1
J2
P1
P2
SUMBUS 
CUSTOM AREA
-
12V
+
12V
J21
J13 
Figure 9. SUMBUS Custom Area 
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