3.1 Input Channel Selection
The DB-990D provides 15 channel differential analog inputs. Input channel selection
is controlled by the 4 bit TTL/CMOS digital data (CN3 DO0~DO3) issued by the
OME-A-82x series multi-function card.
DO 3 DO 2 DO 1 DO 0 Analog input
channel
0 0 0 0 0
0 0 0 1 1
0 0 1 0 2
0 0 1 1 3
0 1 0 0 4
0 1 0 1 5
0 1 1 0 6
0 1 1 1 7
1 0 0 0 8
1 0 0 1 9
1 0 1 0 10
1 0 1 1 11
1 1 0 0 12
1 1 0 1 13
1 1 1 0 14
1 1 1 1 15
OME-DB-889D User’s Manual
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