User`s manual

LV-667 User’s Manual Hardware Setup

Serial Port

2.14 <Serial Port>

The board provides four RS232 serial ports, with jumper selectable +5V/+12V output for

COM3 and COM.

Connector: CN_COM3/4

Type: 10-pin (5 x 2) header for COM3/4

Pin Description Pin Description

1 DCD/+5 2 SIN

3 SO 4 DTR

5 GND 6 DSR

7 RTS 8 CTS

9 RI/+12V 10 N/C

Jumper: JC1/3

Type: Onboard 3-pin jumper

JC1/3 Mode

1-2 COM3/4 pin-1 for +5V output

2-3 RIN1

Default setting

Jumper: JC2/4

Type: Onboard 3-pin jumper

JC2/4 Mode

1-2 COM3/4 pin-9 for +12V output

2-3 -XRI

Default setting

JC4/3/2/1

CN_COM3

CN_COM4 1