w w w . d e l l . c o m | s u p p o r t . d e l l . c o m20 Using Your ProjectorSEMI-A UTO K EYSTONE—Press the button on the control panel or the Menu buttonon the remote control to activate the Semi-Auto Keystone correction for imagedistortion.ASPECT R ATIO—Select an aspect ratio to adjust how the image appears.• 1:1 — The input source displays without scaling.Use 1:1 aspect ratio if you are using one of the following:– VGA cable and the computer has a resolution less than XGA (1024 x 768)– Component cable (576p/480i/480p)– S-Video cable– Composite cable• 16:9 — The input source scales to fit the width of the screen.• 4:3 — The input source scales to fit the screen.Use 16:9 or 4:3 if you are using one of the following:– Computer resolution greater than XGA– Component cable (1080i or 720p)VIDEO M ODE —Select a mode to optimize the display image based on how theprojector is being used: Movie, PC, sRGB (provides more accurate colorrepresentation), and User (set your preferred settings). If you adjust the settingsfor White Intensity or Degamma, the projector automatically switches to User.WHITE INTENSITY —Select 0 to maximize the color reproduction and 10 to maximizethe brightness.DEGAMMA —Adjust between 1 and 6 to change the color performance of the display.The default setting is 0.Computer Image MenuNOTE: This menu is only available when a computer is connected.FREQUENCY —Change the display data clockfrequency to match the frequency of yourcomputer graphics card. If you see a verticalflickering bar, use Frequency control to minimizethe bars. This is a coarse adjustment.TRACKING—Synchronize the phase of the displaysignal with the graphics card. If you experiencean unstable or flickering image, use Tracking tocorrect it. This is a fine adjustment.NOTE: Adjust FFrequency first and then TTracking.