Com Port 3 (Cn20) - Aaeon PCM-QM77 Manual

C o m p a c t B o a r d
7
8
9
10

2.39 COM Port 3 (CN20)

Pin
1
2
3
4
5
6
7
8
9
10
Chapter 2 Quick Installation Guide
RTS
CTS
RI
NC
DCD
TX
GND
RTS
RI
Pin Name
DCD
RX
TX
DTR
GND
DSR
RTS
CTS
RI
NC
2-38
P C M - Q M 7 7
OUT
IN
IN
1 2
RX
DTR
DSR
CTS
NC
9 10
Signal Type
IN
IN
OUT
OUT
GND
IN
OUT
IN
IN
±9V
Signal Level
±9V
±9V
±9V