TEST SCREEN
23
ENGLISH
Test Screen
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 standard 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, S-Video will be better
than Video, RGB best of all.
the performance of the color filter in your TV
(with ”Video” signals), bar edges should
show no vertical crawling dots. Here S-Video
and RGB formats usually give no problems.
With the grey 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.
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 grey scale
in the test picture separately and clearly.
3. Adjust the Brightness so that the bars in the
grey scale are all visible. The bar farthest to
the left has to be as black as possible rather
than grey but the next one must be clearly
differentiated. All the bars in the grey scale
should gradually and evenly change 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 bottom 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 while turning up the contrast or
when the borders of the white
”harman/kardon” text letters on top bloom
(overlight) into the black areas, drastically
reducing 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 in normal ambient
daylight, adjust the Contrast so that a normal
video picture has about the same look as the
surroundings in your room. This helps the eyes
relax when watching the TV picture. This
contrast setting may be reduced when the
surrounding light is dimmed, usually improving
the sharpness of a video a lot.
4. The grey 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
optimisation.
Color adjustment.
1. When the Brightness and the Contrast are set
optimally, turn up the color control to the level
of your perference. Adjust to the level where
the colors look strong but still natural, not
overdone. If the color level is too high,
depending on the TV, some of the bars will
seem wider or the color intensity will not
increase as 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 well
known natural articles of our life most useful
for an optimal setting of the color intensity.
2. If your TV has a Tint option (with most
European TVs this is available or effective only
with NTSC signals, not with PAL), use the large
white bar below the Greyscale to tweak the
warmth of the picture. Every viewer has a
difference in preference of 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
where you feel the white color has the tone
you prefer.
Color Bars
Grey Scale
100%
Black/White
fields
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 DMC 250 video
adjustments menu if necessary, 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 rear-projection video
displays. However, the controls used to adjust
these parameters are often not user-accessible.
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
Buttons
9
until “Done” is highlighted at the
bottom of the Video Adjustments submenu. Press
the
Enter Button
6
to select it to return to
the on-screen menu system. Then, press the
Setup Button
8
to remove the menu displays
from the screen. The unit will return to normal
operation and you are ready to enjoy the finest in
DVD or CD playback!
