The buttons and their functionality are:
Button  | Function when OSD is not displayed:  | Function when OSD is displayed:  | |
Menu  | Display OSD main menu  | Return to previous OSD menu  | |
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  | Display OSD Brightness submenu  | Increase value of selected parameter /  | |
  | select previous menu item  | ||
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  | Display OSD Contrast submenu  | Decrease value of selected parameter /  | |
  | select next menu item  | ||
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Select  | Input Select  | Select parameter for adjustment /  | |
select submenu to enter  | |||
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Using the OSD buttons controls an 
Parameter | Available Adjustment | 
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Brightness | Increase/decrease monitor brightness.  | 
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Default: maximum  | 
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Contrast | Increase/decrease monitor contrast.  | 
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Default: best   | 
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Clock | Allows fine adjustments of the panel’s pixel dot clock.  | 
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Only applicable for VGA input video  | 
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Phase | Allows fine adjustments of the panel’s pixel dot clock phase.  | 
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Only applicable for VGA input video  | 
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Auto Adjust | Automatically adjusts the system clock to the input analog VGA video signal, affecting  | 
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the   | 
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  | Only applicable for VGA input video  | 
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 | Moves the image horizontally on the display in   | 
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Default: centered.  | 
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  | Only applicable for VGA input video  | 
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Moves the image vertically on the display in   | 
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Default: centered.  | 
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  | Only applicable for VGA input video  | 
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  | Switches the scaling method between Full Scaling and Maintain Aspect Ratio.  | 
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  | Default: Full Scaling  | 
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  | Full Scaling – scales the X- and   | 
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  | needed) to the display’s native resolution.  | 
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Aspect Ratio | Fill To Aspect Ratio – Assuming a landscape orientation and an input video with aspect  | 
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ratio smaller than 1920 x 1080, scales the   | 
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  | as needed) to the display’s   | 
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  | input video’s aspect ratio (and fills the rest of the display with equal black bars on the  | 
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  | left and right).  | 
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  | The touchscreen may need recalibration when switching between Aspect Ratio  | 
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  | options.  | 
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Sharpness | Adjusts sharpness of the displayed images.  | 
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Default: no sharpness adjustment  | 
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  | Only applicable at  | 
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  | User Manual: 43L Series  | |
  | SW601960 Rev B, Page 13 of 24  | |