LG l1900j User Manual

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DDC/CI ON/OFF Function
A9
DDC/CI ON/OFF Funtion
Display is on when Power button is touched,
and DDC/CI is ON/OFF when Power button is
touched more than a few seconds. 
* Initial Setup Status is DDC/CI ON.
DDC/CI(Display Data Channel Command Interface) is communication
protocol for communications between PC and monitor. 
DDC/CI makes it possible to adjust and setup detailed functions on PC
instead of the monitor OSD. 
Monitor can be adjusted with PC by connecting communication between
PC and monitor when DDC/CI is ON, and monitor cannot be adjusted
with PC because communication between PC and monitor is
disconnected when DDC/CI is OFF. 
NOTE
However, DDC/CI function is operated only once when Display is on, and it is
not operated when Display is turned off by touching Power button. 
Tip
Especially, Forte Manager program must be operated in DDC/CI ON status
because it does not operate normally in DDC/CI OFF status.