Acer H9505BD User Manual - Page 38
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English 28 Image Projection • Front-Desktop: The factory default setting. • Rear-Desktop: When you select this function, the projector reverses the image so you can project from behind a translucent screen. • 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. Aspect Ratio Manual Keystone • Front-Ceiling: When you select this function, the projector inverts the image for ceiling-mounted projection. 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. • Full: Resize image to fit full screen by width (1280 pixels) and height (800 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. • L.Box: Keep original signal aspect ratio and zoom in by 1.333 times. Adjust image distortion caused by tilting projection. (±40 degrees) Sharpeness H. Position V. Position Frequency Tracking The Manual Keystone function is unavailable under Auto Keystone setting to "On". Adjusts the sharpness of the image. • Press to decrease the sharpness. • Press to increase the sharpness. • Press • Press to move the image left. to move the image right. • Press to move the image down. • Press to move the image up. "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. Synchronizes the signal timing of the projector with the graphics card. If you experience an unstable or flickering image, use this function to correct it.