Acer X1230S Rear-Ceiling, Aspect, Ratio, Auto Keystone, Manual, Sharpness, Position, Horizontal

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	Rear-Ceiling
	• When you select this function, the projector reverses and
		inverts the image at same time. You can project from
		behind a translucent screen with ceiling mounted
		projection.
	Use this function to choose your desired aspect ratio.
Aspect	• Auto: Keep the image with original width-height ratio
		and maximize the image to fit native horizontal or
Ratio		vertical pixels.
	• 4:3: The image will be scaled to fit the screen and
		displayed using a 4:3 ratio.
	• 16:9: The image will be scaled to fit the screen and
		displayed using a 16:9 ratio.
Auto Keystone	Automatically adjusts image distortion caused by tilting
	projection (±40 degrees).
	Manually adjusts image distortion caused by tilting projection
Manual	(±40 degrees).
Keystone
	Adjusts the sharpness of the image.
Sharpness	•	Press	to decrease the sharpness.
	•	Press	to increase the sharpness.
H. Position	•	Press	to move the image left.
(Horizontal
	•
Position)		Press	to move the image right.
V. Position	•	Press	to move the image down.
(Vertical
	•
Position)		Press	to move the image up.
	Changes the projector’s refresh rate to match the frequency
Frequency	of your computer’s graphics card. If you experience a vertical
	flickering bar in the projected image, use this function to
	correct it.
	Synchronizes the signal timing of the display with the graphic
Tracking	card. If you experience an unstable or flickering image, use
	this function to correct it.