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JMA-9172-SA Instruction Manual > 3.BASIC OPERATION > 3.4  GENERAL RADAR OPERATION
3.4.12 Switch Day/Night Mode [DAY/NIGHT] 
Several combinations of the display color and brilliance according to the ambient 
lighting conditions are provided. The display color setting is easily changed.
1) Press the [DAY/NIGHT] key. Alternatively, left-click the  Day/Night 
button located at the lower right of the radar display.
The DAY/NIGHT modes are switched.
  →   →   →     
      
←   ←   ← 
The current mode is displayed at the lower right of the radar display.
For how to set the display color and brilliance for each mode, see Section 3.8.5 "Set Radar 
Display (Display Setting)"
3.4.13 Adjust Operation Panel Brilliance [PANEL] 
Adjust brilliance of the operation panel according to the ambient lighting 
conditions.
1) Press the [PANEL] key. Alternatively, left-click the    
button located at the lower right of the radar display. 
In consideration of the ambient brightness, adjust panel brilliance that is high enough to read 
the characters on the operation panel but does not glare.
The [PANEL] key lamp lights up irrespective of panel brilliance adjustment.