User`s manual

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