VIEWSONIC VP3881a 37.5" 21:9 4K Curved IPS Monitor - Manual (Page 25)

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Standard Color
Contrast/Brightness
Input Select
Main Menu
Exit
Contrast/Brightness
Adjust the contrast or brightness level.
Contrast
70
Brightness
100
Standard Color
Contrast/Brightness
Input Select
Main Menu
Exit
Input Select
Select the input source.
DisplayPort
HDMI 1
HDMI 2
Type C
Standard Color
Contrast/Brightness
Input Select
Main Menu
Exit
Main Menu
Enter the On-Screen Display (OSD) Menu.
3840 X 1600 @ 60Hz
VP3881
Setup Menu Color Adjust ViewMode Manual Image
Adjust
Input
Select
Audio Adjust
DisplayPort
HDMI 1
HDMI 2
Type C
Auto Detect Standard Color
Contrast/Brightness
Input Select
Main Menu
Exit
Exit
Exit the Quick Menu.
NOTE: Use the 5 key to exit the Quick Menu.