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Фрагмент инструкции
It is important, however, to ensure that the Tint or Contrast is set correctly prior to adjusting the level. Level Up or Level Down increases your flexibility by allowing you to choose which tones of color/greyscale will be projected. Pressing Level Up increases the limits of the range of tone which will be depicted by that color. Pressing Level Down will cause a smaller band of tone to be depicted as a given color. There are 64 steps. The level controls operate only on analog video signals such as those from VGA, MCGA, or Macintosh II display systems. 21 REAL COLOR AND MONOCHROME 16 LCD PROJECTION PANELS level tint shift Fig. 4-13. Level Up and Level Down. 4.3.5 MENU Pressing the Menu control displays the User Menu, which allows you to adjust the initial color balance and tracking, change the text mode and language, and flip the projection image. The User Menu also provides information about the video input. After you display the User Menu, use the Position (< >) control buttons to move within and between menu options, and the Position ( ^ or v ) to change an option. For information about the User Menu, see the section later in this chapter. Shift-Menu (either button) moves you in or out of menu mode. menu shift position Fig. 4-14. Menu. 4.4 Using the Control Buttons to Make Adjustments Now that you have reviewed the functions of each of the control buttons, here is the order in which you use them to achieve the best possible projected image. 1. Press the Tint or Contrast buttons up or down to change the color of your image or text for the best viewing. Tint or contrast is easiest to adjust with an image that contains large areas of different color or greyscale. 2. Move the image on the screen with the Position Up, Down, Left, and Right buttons until it is centered. 3. Focus the overhead projector until the image is crisp and clear. 22 CHAPTER 4: Operation NOTE The Projection Panel must be placed correctly on the overhead projector. Incorrect placement may cause the Projection Panel to project blurry or mis-converged images. For more information, see Appendix A. 4. Press Sync until the image is locked in as a solid image with no shimmer or movement. This button toggles through the present settings to the specific computer graphics type. Press Sync until you achieve the best image. 5. For VGA, MCGA, and Macintosh II, you may need to hold down Shift and press Level Up or Level Down to choose the best color matching. For best results when adjusting the level, display an image that has a wide range of colors. For VGA text display, you may need to adjust the Text Mode if the text characters are jagged or shimmering. 6. If your computer is one of the standard supported systems, your image should be fully adjusted at this point. However, if your computer is any other type, you may see evenly spaced fuzzy vertical lines, or text may appear to be too wide or too narrow for the screen. To correct this problem, go to the User Menu (press the Menu control button) and adjust the tracking. 7. You may want to press Reverse to select either light characters on a dark background or dark characters on a light background. Use the setting which best suits your graphics or text. 8. To restore factory-set default values, hold down Shift and press Reset while the menu is being displayed. 4.5 User Menu Pressing the Menu control button displays the User Menu on your computer’s monitor. The User Menu allows you to change the color balance, adjust the tracking, and control how information is displayed. 23 REAL COLOR AND MONOCHROME 16 LCD PROJECTION PANELS NO VIDEO TRACK 800 HORZ 15.3 VERT +60 MODE 15 LANGUAGE REAR PROJECT TEXT SLICE TEXT MODE EGA 64 RED GRN LevelTRACK ENGLISH OFF 1 ON OFF Fig. 4-15. Projection Panel Menu. 4.6 Moving Through the User Menu After you display the User Menu, use the Position control buttons (left and right) to move within and between option columns. These keys are auto-repeat buttons; that is, pressing and holding these buttons causes them to constantly send instructions. Tint/.Contrast and Level buttons are still active when in Menu Mode. 4.7 Adjusting a Menu Option Use the Position Up and Down control buttons to adjust menu options. These keys auto-repeat. Pressing Shift RESET when the menu is showing resets all menu items, including the color adjustments, to factory-default values. 4.7.1 COLOR BALANCE (TRUE COLOR ONLY) Adjust the Tint control to get the best colors. Black and white will always have a reddish tint. If the colors still need adjustment, display the menu by pressing Shift-Menu. If you press Shift-Reset when the menu is displayed, the color balance will be reset to its factory default values. Resetting to default and slightly adjusting the Tint control may be enough to improve the colors. 24 CHAPTER 4: Operation If the colors still need adjustment, follow these steps and use the red and green adjustments to fine-tune the panel: 1. Move the green bar down until you have a rich red and a sol...
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