IBASE MB961 - Manual (Page 15)

INSTALLATIONS
MB961 User’s Manual 11
JP1: COM1 RS232 RI/+5V/+12V Power Setting
JP1 Setting Function
Pin 1-3
Short/Closed
+12V
Pin 3-4
Short/Closed
RI
Pin 3-5
Short/Closed
+5V
JP2: COM2 RS232 RI/+5V/+12V Power Setting
JP2 Setting Function
Pin 1-3
Short/Closed
+12V
Pin 3-4
Short/Closed
RI
Pin 3-5
Short/Closed
+5V