Protech Systems PA-6822, User Manual

Page: 27 / 250

Chapter 2 System Configuration
COM Port RI & Voltage Selection
JP_COM1, JP_COM2, JP_COM3, JP_COM4:
Pin-headers on board
SELECTION JUMPER
SETTING
JUMPER ILLUSTRATION
RI 1-2
5
6
1
2
JP_COM1
5
6
1
2
JP_COM2
5
6
1
2
JP_COM3
5
6
1
2
JP_COM4
+12V 3-4
5
6
1
2
JP_COM1
5
6
1
2
JP_COM2
5
6
1
2
JP_COM3
5
6
1
2
JP_ COM4
+5V 5-6
5
6
1
2
JP_COM1
5
6
1
2
JP_COM2
5
6
1
2
JP_COM3
5
6
1
2
JP_ COM4
Caution:
1. Voltage of external COM 1~ 4 ports are made to control on BIOS for your convenience.
The corresponding jumpers JP_COM 1~4 are set open (no connection) by default;
refer to
Voltage Adjust Configuration
for detailed jumper setting (BIOS default at Disable ).
2. JP_COM 1~4 are enabled when C OM1~4 voltage adjustment is disabled on BIOS
3. Voltage of COM port is adjustable by BIOS or jumpers. Either way cannot be applied
simultaneously in case of system error, component damage or serious boot failure.
PS: COM4 is optional
PA-6822 Series User Manual Page 26