TEST SCREEN
When you activate the Test Screen via the OSD you can activate a still image to test all settings and the video performance of your TV. With the vertical color bars you can test the following:
•Proper color intensity setting on your TV.
•The proper color of each bar, showing if the proper video stan- dard is turned on: the colors should be (left to right): black, white, yellow, cyan (turquoise), green, magenta (purple), red, blue, black.
•Proper color transition, seen as sharp separation of the bars;
•The performance of the color filter in your TV (with ”Video” signals), bar edges should show no vertical crawling dots. Here,
With the gray scale and the black/white fields below the color bars, the brightness and contrast of your screen can be adjusted optimally; see chapter ”TV Picture Adjustment” below.
Color Bars
Gray Scale
100% Black/White
Fields
TV Picture Adjustment With Test Screen
These adjustments may be done now, but you can also make them after setup has been finalized.
Brightness Adjustment
1.Turn down the color control on your TV until the color bars are visible in black and white.
2.Adjust the contrast to the lowest level where you still can see all bars within the gray scale in the test picture separately and clearly.
3.Adjust the brightness so that the bars in the gray scale are all visible. The bar furthest to the left has to be as black as possible rather than gray but the next must clearly be differentiated.
All the bars in the gray scale have to be gradually and evenly changing from black to whiter, going from left to right.
Contrast Adjustment
1.Adjust the contrast on your TV until you see a bright white bar in the lower right corner of the screen and a deep dark black bar on the left. The optimal contrast setting will depend on your preference and the surrounding light in the TV room.
2.If the brightness of the white bar stops increasing while turning up the contrast or when the borders of the white ”JBL” text letters on top bloom (overlight) into the black areas, drastically decreasing the sharpness of the script, then the contrast has been turned up too much. Reduce the contrast until these effects disappear and the video still looks realistic.
3.If you are watching TV with ordinary surrounding daylight, adjust the contrast so that a typical video picture has about the same look as the surroundings in your room. That way, the eye is relaxed when watching the TV picture. This contrast setting may be reduced when the surrounding light is dimmed, usually improving the sharpness of a video considerably.
4.The gray scale in the middle line needs to have the same clear difference between each bar as before the contrast adjustment. If not, go back to the brightness adjustment and repeat Step 3, and then the contrast adjustments, making only minor adjustments each time for optimization.
Color Adjustment
1.When the brightness and the contrast are set optimally, turn up the color control to the level of your preference. Adjust to the level where the colors look strong but still natural, not overdone. If the color level is too high, depending from the TV used, some of the bars will seem wider or the color intensity will not increase while the control is turned up. Then the color control must be reduced again. At the end, you should test the color intensity also with a video – e.g., pictures of natural faces, flowers, fruit and vegetables and other familiar, natural objects most useful for an optimal setting of the color intensity.
2.If your TV has a Tint option (with most European TVs this is avail- able or effective only with NTSC signals, not with PAL), use the large white bar below the gray scale to tweak the warmth of the picture. Every viewer has a different preference as to how the glow of the picture should be. Some prefer a little colder picture, some a warmer glow. The Tint function on your TV and the white bar can be used to control this. Adjust the Tint to the level at which you feel the white color has the tone you prefer.
Sharpness Adjustment
Contrary to intuition, the picture will appear sharper and clearer with the sharpness, or Edges, setting backed off from the maximum setting. Reduce the sharpness setting on your television, and the Edges setting on the CS3/CS5 video adjustments menu, if neces- sary, to minimize the appearance of any white lines between the bars in the gray scale portion of the test screen.
Convergence and Edge Focus
The crosshatch pattern that surrounds the test screen may be used to evaluate edge focus and convergence in front- or
In any event, these adjustments are extremely complex, and require proper training and experience to avoid worsening the situation. Therefore, it is recommended that if you are unable to improve the picture using the available controls, contact the video display manufacturer’s authorized service representative for assistance.
When all desired setup and configuration entries have been made, use the KL Navigation 9 buttons until “Done” is highlighted at the bottom of the Video Adjustments submenu. Press the Enter 6 button to select it to return to the
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