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1. A VGA (CRT) connector is provided for VGA signals.
2.
Connecting the Display2 (HD) and Display3 (HD) port
3.
Connecting the COM ports
The DB9 COM3/4 is standard RS232 serials port, and the DB9-COM1/2 is designed
for multiple proposes. The COM1/2 can select RS232/RS422/RS485 by
setting. The following tables show the signal connections of these connectors.
HD
14
DB15
Signal
1
2
Green
3
13
Hsync
14
Vsync
12
DDC Data
15
DDC Clock
5 & 10
Digital Ground
6,7,8
Analog Ground
Others
Not Used
HD
DB-9
RS-232 Signal
1
-DCD
6
-DSR
2
RXD
7
-RTS
3
-TXD
8
-CTS
4
-DTR
9
-RI
5
Ground
Case
Case Ground
Red
Blue
BIOS CMOS
RS-422
RS-485
RX-
485-
TX-
RX+
485+
TX+
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