2.5.7
Battery Connector (J19)
Pin
Assignment
1
Battery+
2
Ground
2.5.8
COM2, COM3, COM4 RS-232 Ports (J24, J21, J17)
Pin
Assignment
1
DCD, Data carrier detect
3
TXD, Transmit data
5
7
RTS, Request to send
9
RI, Ring indicator
24
Ground
Pin
Assignment
2
RXD, Receive data
4
DTR, Data terminal ready
6
DSR, Data set ready
8
CTS, Clear to send
10
Not Used
IB836 User's Manual