Références - NEC MultiSync LCD1980FXi User Manual

If Brightness setting value becomes higher than the Brightness setting vale at the bright condition while user sets the
Brightness at the dark condition, Brightness setting becomes as following figure.
when Y reach to X
when user up the Brightness further
when user down the Brightness again
English-22
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BRIGHTNESS range
BRIGHTNESS range
BRIGHTNESS range
BRIGHTNESS range
BRIGHTNESS range