AR-B1890 User’s Manual
18
COM4 RS-232 Connector ( CN4 ) Pin Assignment Pin Assignment
1 DCD4# 2 RXD4
3 TXD4 4 DTR4#
5 GND 6 DSR4#
7 RTS4 8 CTS4#
9 RI4# 10 N / C
Pin Assignment
1 CD-L
2 GND
3 GND
4 CD-R
Pin Assignment Pin Assignment
1 Y 2 C
3 GND 4 GND
5 CVBS 6 N / C
7 GND 8 N / C