
TM70Bi V3.1 (03/09) 1121174.pdf
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If there is no external voltage range available, the card provides through pin number 1 (+VI), a voltage
between 12 and 20 volts, to activate the inputs as shown in the figure 2.
I3
+VI
1
IN1
2
IN2
3
IN3
4
IN4
5
6
GND
IN4D
I1
1
2
3
4
5
6
Figure
2
Block diagram of the signals (see figure 3):
LR70
I3
+VI
1
IN1
2
IN2
3
IN3
4
IN4
5
GND
6
IN4D
I1
1
GND
2
+VI
3
3.3V
4 GND
5
GND
6
IN
P16
1
2
3
4
5
6
Figure
3
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