Lanner LEC-7950 - Manual (Page 13)

12
Board Layout
Chapter 3
Embedded and Industrial Computing
COM2 RS-232/422/485 Serial Port(CN4): It is a RS-
232/422/485 port through the D-SUB9 connector.
J10, SC2T1: Select COM1 Protocol Setting
RS-232
RS-422
RS-485
Jumper Settings
Audio Line-in RCA Connector Right and Left (J4, J5)
Audio Line-out RCA Connector Right and Left (J2, J3)
Note: The driver for the VGA and Audio ports
should be installed with the following order:
Chipset INF->Graphic->Audio
COM1 RS-232/422/485 Serial Port (CN3): It is a RS-
232/422/485 port through the D-SUB9 connector.
Pin No. Function
1 Front_out
2 GNd
Pin No. Function
1 Front_out
2 GNd
SC2T1 J10
1
2
6 7 8 9
1 2 3 4 5
Pin No. Pin Name
Rs-232 Rs-422 Rs-485
1 data Carrier detect
(dCdA # )
TXd- dATA-
2 Receive data
(RXdA )
TXd+ dATA+
3 Transmit data
(TXdA )
RXd+
4 data Terminal Ready
(dTRA # )
RXd-
5 Ground
(GNd )
6 data set Ready
(dsRA # )
7 Request To send
(RTsA # )
8 Clear To send
(CTsA # )
9 Ring Indicator
(RIA # )
6 7 8 9
1 2 3 4 5
Pin No. Pin Name
Rs-232 Rs-422 Rs-485
1 data Carrier detect
(dCdA # )
TXd- dATA-
2 Receive data
(RXdA )
TXd+ dATA+
3 Transmit data
(TXdA )
RXd+
4 data Terminal Ready
(dTRA # )
RXd-
5 Ground
(GNd )
6 data set Ready
(dsRA # )
7 Request To send
(RTsA # )
8 Clear To send
(CTsA # )
9 Ring Indicator
(RIA # )
7
8
4
8
12
1
5
9