9
JP3 (4-pin): INVERTER Back Light VCC 3.3V/5V /12V Select
JP3
6
4
2
3
1
5
1 3 5
2 4 6
1
3 5
2 4 6
2-4 Closed:
Inverter Backlight
VCC= +3.3V;
3-4 Closed:
Inverter Backlight
VCC= +5V;
4-6 Closed:
Inverter Backlight
VCC= +12V.
JP8 (4-pin): COM1 Port Pin9 Function Select
JP8
4-6 Closed:
Pin9=+12V.
6
4
2
3-4 Closed:
Pin9=RI;
2-4 Closed:
Pin9=+5V;
3
1
5
1 3 5
2 4 6
1 3 5
2 4 6