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15
Chapter 2 Hardware Installation
Chapter 2
COM 1/COM 2 RS232/Power Select
RS485
COM 1/COM 2
RS422
Full Duplex
RS232
2
1
9
RXD-
RXD+ TXD+
TXD-
GND
NC.
NC.
NC.
NC.
2
1
9
D
ATA
-
DA
TA
+
NC.
NC.
GND
NC.
NC.
NC.
NC.
2
1
9
RXD
DCD- TXD
D
TR
-
GND
DSR
-
RT
S-
CTS-
RI
-
1-3 (RI-), 2-4 (DCD-) On:
RS232 (default)
3-5 (+5V), 4-6 (+12V) On:
RS232 with power
2 4 6
1 3 5
2
1
9
JP4 JP5
COM 1
COM 2
COM 1/COM 2:
RS232/422/485
2 4 6
1 3 5
JP4 (for COM1) and JP5 (for COM 2) are designed to configure Serial COM ports to pure
RS232 or RS232 with power.
JP17
eDP Backlight Power Select (Optional)
1-2 On: +3.3V
(default)
2-3 On: +5V
3
1
2
3
1
2
JP17 is used to select the power level of backlight control: +3.3V (default) or +5V.
Important:
Before powering-on the system, make sure that the power settings of JP17 match the
power specification of backlight control. Selecting the incorrect voltage will seriously
damage the backlight.
