Acer P3250 Acer P3150 and P3250 Projector Series User's Guide - Page 31
H. Position, Signal Type
UPC - 884483153084
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English 19 H. Position (Horizontal position) 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. • Press to move the image left. • Press to to move the image right. V. Position • (Vertical position) • Press Press to move the image down. to move the image up. Frequency Tracking Sharpeness "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. Adjusts the sharpness of the image. • Press to decrease the sharpness. • Press to increase the sharpness. Signal Type Select signal type from RGB, YCbCr or YPbPr source. Note: "H. Position", "V. Position", "Frequency" and "Tracking" functions are only supported under Computer mode. Note: "Sharpness" and "Signal Type" functions are only supported under Video mode.