Samsung PN51D490A1DXZA - Manual (Page 131)

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English
■ Screen Burn Protection
To reduce the possibility of screen burn, this unit is equipped with screen burn
prevention technology. The Time setting allows you to programme the time
between movement of the picture in minutes.
● Pixel Shift ( Off / On ): Using this function, you can minutely move pixels on the
PDP in horizontal or vertical direction to minimize after image on the screen.
N Optimum condition for pixel shift
Item TV / AV / Component / HDMI/PC
Horizontal 0~4 4
Vertical 0~4 4
Time (minute) 1~4 min 4 min