Acer K137 - Manual (Page 26)

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Image
Projection Mode
• Front: The factory default setting.
• Rear: Reverses the image so you can project from behind a
translucent screen.
Projection Location
• Auto: Automatically adjusts projection location of image.
• Desktop
• Ceiling: Turns the image upside down for ceiling-mounted
projection.
Aspect Ratio Use this function to choose your desired aspect ratio.
• Auto: Keep the image with original width-higth ratio and maxi
mize the image to fit native horizontal or 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 width of the screen and
the height adjusted to display the image using a 16:9 ratio.
• Full: Resize image to fit full screen by width (1280 pixels) and
height (800 pixels).
• L.Box: Keep original signal aspect ratio and zoom in by 1.333
times.
Auto Keystone Automatically adjusts vertical image.
Manual Keystone Adjust image distortion caused by tilting projection. (±40 degrees)
<Note> The Manual Keystone function is unavailable under Auto
Keystone setting to "On".
Sharpness Adjust the sharpness of the image.
• Press to decrease the sharpness.
• Press to increase the sharpness.
H. Position •
Press to move the image left.
• Press to move the image right.
V. Position • Press to move the image down.
• Press to move the image up.
Frequency "Frequency" changes the projector's refresh rate to match the
frequency of your computer’s graphics card. If you can see a vertical
flickering bar in the projected image, use this function to make the
necessary adjustments.