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Фрагмент инструкции
Connect your test pattern source to the input that you are calibrating and proceed as follows. Perform the adjustments in the order listed here. Brightness: On your external test pattern source, select a PLUGE pattern. (PLUGE is an acronym for “Picture Line-Up Generation Equipment.”) Figure 4-2 shows a typical PLUGE pattern. Below BlackAbove Black Figure 4-2. Typical PLUGE Pattern for Adjusting Brightness PLUGE patterns vary but generally consist of some combination of black, white and gray areas against a black background. The example above includes two vertical bars and four shaded boxes. Select Brightness from the Picture menu and press ENTER. Adjust the brightness so that: •The darkest black bars disappear into the background. •The dark gray areas are barely visible. •The lighter gray areas are clearly visible. •The white areas are a comfortable level of true white. •The image contains only black, gray and white (no color). Contrast: On your external test pattern source, select a stepped, gray-bar pattern like the one shown in Figure 4-3. Figure 4-3. Typical Gray Bar Pattern for Adjusting Contrast Select Contrast and press ENTER. Adjust the contrast to a point just below which the white rectangle starts to increase in size. Note Brightness and contrast controls are interactive. A change to one may require a subtle change to the other in order to achieve the optimum setting. Color Saturation: On your external test pattern source, select a color bar pattern like the one shown in Figure 4-4. grayyellowcyangreenmagentaredblue Figure 4-4. Typical Color Bar Pattern for Adjusting Color Saturation and Tint Select Color and press ENTER. While looking at the color bar pattern through a blue filter, adjust the color saturation level until the outermost (gray and blue) color bars appear to be a single shade of blue: grayyellowcyangreenmagentaredblue Tint: Tint or “hue” is essentially the ratio of red to green in the color portion of the image. When tint is decreased, the image appears redder; when it is increased the image appears greener. To set the tint, select Tint and press ENTER. While looking at the color bar pattern through a blue filter, adjust the tint level until the cyan and magenta color bars (on either side of the green bar) appear to be a single shade of blue. Note Like the brightness and contrast controls, the color and tint controls are interactive. A change to one may require a subtle change to the other in order to achieve the optimum setting. Sharpness: “Sharpness” is the amount of high-frequency detail in the image. To adjust sharpness, select Sharpness from the Picture menu and press ENTER. On your external test pattern source, select a pattern like the one shown in Figure 4-5. Adjust as needed, looking for white edges around the transitions from black to gray and differently-sized lines in the “sweep” patterns at the top and bottom. Lower the sharpness setting to eliminate them. Figure 4-5. Typical Test Pattern for Adjusting Sharpness Input . Position Use the controls in the Input Position Menu to fine-tune the aspect ratio and image position for the current source. Note The input position settings are automatically saved for each input and resolution. Left/Right: Select Left/Right from the Input Position menu to shift the projected image horizontally. Use the right or up cursor button to shift the image to the right; use the left or down button to shift it to the left. Up/Down: Select Up/Down from the Input Position menu to shift the projected image vertically. Use the right or up cursor button to shift the image upward; use the left or down button to shift it downward. Width: Select Width from the Input Position menu to change the projected image width. Use the right or up cursor button to increase the width; use the left or down button to decrease it. Height: Select Height from the Input Position menu to change the projected image height. Use the right or up cursor button to increase the height; use the left or down button to decrease it. Overscan: Image Overscan pushes the outside edge of the active picture area of the video signal out beyond the edge of the display area. Some television programs are produced based on the assumption that older television sets may not display the outer edges of the broadcast picture area. Overscan effectively trims away these inactive, outer edges and enlarges the remaining portion of the image to fill the display area. Select from 1% to 10% of Overscan, as desired. For HDTV, DVDs and other video sources, Overscan is generally not necessary or desirable. ISF Presets For each input, the VX-2ix lets you save image quality settings as presets that you can recall at a later time. You can create up to four presets per input and resolution. Use the ISF Presets menu to recall saved image presets, or to save image settings in the “Custom 1” or “Custom 2” memory location. The currently-selected preset is indicated by a “..” to its left; in the example shown here, IS...