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Highlight VERTICAL with the con-
trol disk and press ENTER. This
adjustment is done for all three
colors at the same time.
Use the control disk to equalise the
vertical light output and press EN-
TER to continue.
The best result is obtained on a
white image by looking on the top
and the bottom side until both are
equal, or by using a very sensitive
light meter.
Contrast edge correction ('hot spot')
Highlight LEFT-RIGHT with the
control disk and press ENTER to
start the horizontal 'hot spot' cor-
rection in the center of the screen.
Adjust with the control disk for the
same light output in the corners as
in the center of the image.
This left-right adjustment must be
done in combination with the top-
bottom adjustment as both adjust-
ments influence each other.
Note : these adjustments will re-
duce the total light output, so do
not over adjust.
Hint : A bar scale of 10 - 15 for both
adjustments gives a good result.
Press ENTER to return to the Con-
trast Modulation menu.
D-4
APPENDIX D : CONTRAST MODULATION
ENTER selects the Vertical Contrast Equali-
sation option.
EXIT returns to the Random Access Ad-
justment Mode main menu.
ADJUST returns to the Operational mode.
ENTER starts the Left-Right Contrast Edge
Correction.
EXIT returns to the Random Access Ad-
justment main menu.
ADJUST returns to the Operational mode.
R5975238 BARCOVISION 701 MULTIMEDIA 070497
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G R E E N H O R I ZO N T A L
B L U E H O R I ZO N TA L
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3 3 8 d
3 3 8 a
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