Sylvania SDPF833 - Manual (Page 7)

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3.2 Display Setup
3.2.1 TFT Brightness
This option can be used to set the screen Brightness. The
Brightness is divided into 9 different levels, from -4~0~4, with larger
numbers representing greater contrast.
TFT Contrast And TFT Saturation is same operation
3.2.2 TFT TINT
If an LCD display is used this option can be used to set the screen
TINT. The TINT is divided into 15 levels, from -7~0~7, with the
larger (positive) numbers representing high brightness.
3.2.3 TFT Sharpness
If an LCD display is used this option can be used to set the screen
Sharpness. The Sharpness is divided into 9 levels, from 0~9, with
the larger (positive) numbers representing high brightness.