3-17
Themis Computer
3—2P3 PMC Carrier Board
2P3 PMC Carrier Board Solder Beads
Table 3-9.
2P3 PMC Carrier Board Selection Settings
SB2839
SB2840
SB2833
2 PMCs in first I/O slot (VME card
n
)
a
Reserved for 2P2 PMC Carrier Board.
3 PMCs in first I/O slot (VME card
n
)
Short
Short
Open
2 PMCs in second I/O slot (VME card
n+1
)
Reserved for 2P2 PMC Carrier Board.
3 PMCs in second I/O slot (VME card
n+1
)
Short
Open
Open
Reserved
Open
Short
Short
Reserved
Open
Short
Open
Reserved
Open
Open
Short
Reserved
Open
Open
Open
a—For the USPIIe family of computers,
n
= 2
For single-CPU USPIIIi,
n
= 3
For dual-CPU USPIIIi,
n
= 4
Table 3-10.
PCB Revision Settings
Revision
SB2834
SB2837
SB2838
A
Short
Short
Short
B
Short
Short
Open
C
Short
Open
Short
D
Short
Open
Open
E
Open
Short
Short
F
Open
Short
Open
Y
Open
Open
Short
X
Open
Open
Open
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