Detailed Explanation For "Auto Dimming" Function - NEC 1980FXi User Manual

Detailed explanation for "Auto Dimming" function

If user wants to use the "Auto Dimming" function, following procedure is needed.
1. Select "1" at the following OSM.
2. Adjust the "BRIGHTNESS" at the bright condition.
3. Adjust the "BRIGHTNESS" at the dark condition.
4. Then Brightness of the screen is changed by "Auto Dimming" function according to the ambient (room) bright/dark
conditions like following figure.
Brightness setting at the
dark condition adjusted
by procedure 3
Lb : Bright border for ambient; fixed by the F/W or initial factory data
L1 : Ambient bright value when user sets "Brightness" on procedure 2 (L1>Lb)
L2 : Ambient bright value when user sets "Brightness" on procedure 3 (L2<Lb)
English-20
BRIGHTNESS range
Brightness setting at the bright
condition adjusted by procedure 2