COMMELL LV-669 - Manual (Page 14)

LV-669 User’s Manual Hardware Setup
Jumper Reference 14
2.2 <Jumper Reference>
Jumper Function
JRTC CMOS Operating/Clear Setting
JCFSEL Compact Flash address mode setting
JVLCD
LCD Panel Voltage Setting(LV-669X only)
JAT
AT/ATX mode setting
JCSEL1/2
COM2 RS232/422/485 mode setting
JCFSEL
JVLCD
JRTC
JAT
JCSEL2
JCSEL1