Kontron JRexplus-DC - Manual (Page 24)

KTD-S0008-F Page 19 Graphics Interface
JRexplus-DC User's Guide
7.8.1 Jumper Settings
The jumper J5 can be used to set the backlight supply voltage to 5V or 12V.
1
The jumper J3 can be used to invert the backlight-on signal of the backlight inverter.
1
Pins Backlight Voltage
1 - 2 5V
2 - 3 12V
Pins Backlight-On
1 - 2 High
2 - 3 Low