6
4.0 JUMPER SELECTION
Pin Group Function
S1
Selects the binary address (Table 3-1).
S2
Jumper installed on A:* Board can be selected by four
address lines on connector P4, pins L24, U24, L23 and U23.
Jumper installed on B: A high or low level on L24 selects
the board when S1-B1 or S1-B1 are installed respectively.
S3
Controls the DATA READY output.
Jumper installed on A:* DATA READY is active low when
the input address matches the board address.
Jumper installed on B: DATA READY is active when P4-L24
matches S1-B1 or P4-U24 matches S1-B2.
S4
Inverts all output logics except DATA READY. S4-A*
corresponds to positive true logic.
S5, S6
Jumpers installed on A and B of S5 and S6: The main board
powers the parallel BCD board. The outputs are not isolated
from the main board. Default setting of these jumpers is open.
S7, S8, S9, S10
Connects Overflow, High, Low and Go signals to connector
P4, pins U22, U1, L1 and U2, respectively. Default setting
of these jumpers is open.
*Default Setting.
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