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INSTALLATIONS
MB770 User’s Manual
9
JP1: COM3 RS232 +5V / +12V Power Setting
Pin #
Signal Name
JP1
Signal Name
Pin #
1 RI
+12V
2
3
RI (Default)
RI (Default)
4
5 RI
+5V 6
COM3 Settings: Pin 1-2 short = +12V, Pin 5-6 short = +5V, Pin 3-4
Standard COM Port
JP2: COM4 RS232 +5V / +12V Power Setting
Pin #
Signal Name
JP2
Signal Name
Pin #
1 RI
+12V
2
3
RI (Default)
RI (Default)
4
5 RI
+5V 6
COM4 Settings: Pin 1-2 short = +12V, Pin 6-5 short = +5V, Pin 3-4
Standard COM Port
JP3: LCD Panel Power Selection
JP3
LCD Panel Power
3.3V
5V
JP4: LCD Panel Channel Selection
JP4
Setting
Dual
Single