Test Screen, Contrast Adjustment, Color Adjustment

TEST SCREEN

DVD is one of the highest quality sources ever made available for in-home playback of prerecorded pictures and sound. In order to make certain that your home theater sys- tem is fully optimized to take advan- tage of DVD’s superb picture quality, the DVD280 offers a built-in video test signal that makes it easy to calibrate your TV or video display for proper playback.

Test Screen

To utilize the built-in test screen, press the Test Button @ at any time while the player is in Stop or Resume mode or access it from within the Video Adjustments submenu of the on-screen menu system (see Figure 31). When the button is pressed, the test screen will appear, allowing the following adjustments to be made:

•The proper color intensity setting on your TV.

•Proper color adjustments using the color bars, which should be (left to right) black, white, yellow, cyan (turquoise), green, magenta (purple), red, blue and black.

•The 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.

With the gray scale and the black/ white fields below the color bars, the brightness and contrast of your screen can be adjusted.

Color Bars

Gray Scale

100%

Black/White Fields

Figure 35

TV Picture Adjustment With Test Screen Brightness Adjustment

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 visi- ble. The bar furthest to the left has to be as black as possible rather than gray, but the next gradation must clearly be distinct from it. All the bars in the gray scale should be gradually and evenly changing from black to white, 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 at 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 no longer increases when the contrast is turned up or the borders of the white letters in the logo at the top of the test screen bloom (over-light) into the black areas (drastically decreasing the sharpness of the type), 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 cus- tomary surrounding daylight, adjust the contrast so that a normal 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 con- trast setting may be reduced when the surrounding light is dimmed, thereby usually improving the sharpness of a video significantly.

4.The gray scale in the middle line needs to have the same clear dif- ference between each bar as before the contrast adjustment. If not, go back to “Brightness Adjustment” and repeat Step 3 and then “Contrast Adjustment,” making only minor adjustments each time for optimization.

Color Adjustment

too high, depending on the TV, 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. Ultimately, you also should test the color intensity with a video – e.g., pictures of natural faces, flowers, fruit and vegeta- bles, and other common natural articles for an optimal setting of the color intensity.

2.If your TV has a Tint option (this is available 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 prefer- ence 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.

Convergence and Edge Focus

The crosshatch pattern that sur- rounds the test screen may be used to evaluate edge focus and conver- gence in front- or rear-projection video displays. However, the controls used to adjust these parameters are often not user-accessible. In any event, these adjustments are ex- tremely 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 author- ized service representative for assistance.

When all desired setup and configu- ration entries have been made, scroll to the “Done” button at the bottom right of the Video Adjustment sub- menu and select it to return to the on- screen menu system. Then, press the

Setup Button to remove the menu displays from the screen. The fea- tures accessed using the Player Menu of the on-screen menu system

1.	Turn down the color control on	1. When the brightness and contrast
	your TV until the color bars are	are set optimally, turn up the color
	visible in black and white.	control to the level of your prefer-
2.	Adjust the contrast to the lowest	ence. Adjust to the level where the
	level where you still can see all	colors look strong but still natural,
		not overdone. If the color level is

will be described on pages 31–34. The unit will return to normal opera- tion and you are ready to enjoy the finest in DVD or CD playback!