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6. Adjustment Mode
6.4.5.2 Adjusting the input balance
How can it be done ?
To balance the three color signals of a particular source there are conditions; in fact we must know the black and the white level of
the source i.e. :
1.
The source in question must be able to generate a white signal, ideally a 100% white (background) full screen pattern
2.
The source in question must be able to generate a black signal, ideally a 100% black (background) full screen pattern
A
B
Image 6-6
White balance : In the projector, we will set the contrast for each color until we get a 100% light output picture when projecting a
100% white image (image A)
Black balance : In the projector, we will set the brightness for each color until we get a 0% light output picture when projecting a
100% black image (image B).
The changeover from min to max is indicated by the apparition of bright spots also called “digital noise”
An alternative to a full screen White/black pattern is the standard gray scale pattern, the white bar will be used
for white balance and the black bar for black balance.
Image 6-7
Black balance
1. Push the cursor key
↑
or
↓
to highlight
Input balance
. (menu 6-32)
2. Press
ENTER
to select.
The
Input balance
menu will be displayed. (menu 6-33)
3. Push the cursor key
↑
or
↓
to highlight
Black balance
.
4. Adjust the red black level on a minimal value
5. Press
ENTER
to select.
6. Adjust the Brightness to a maximum value until there is just no green noise visible in the black areas.
7. Adjust with the
←
or
→
cursor keys until there is no red noise visible in the black areas.
8. Adjust with the
↑
or
↓
cursor keys until there is no blue noise visible in the black areas.
R5976690 XLM H25 03/09/2004
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Summary of Contents for XLM H25
Page 1: ...XLM H25 Owner s manual R9010100 R5976690 02 03 09 2004 ...
Page 4: ......
Page 8: ...Table of contents 4 R5976690 XLM H25 03 09 2004 ...
Page 12: ...1 Packaging and Dimensions 8 R5976690 XLM H25 03 09 2004 ...
Page 26: ...2 Installation Guidelines 22 R5976690 XLM H25 03 09 2004 ...
Page 40: ...3 Connections 36 R5976690 XLM H25 03 09 2004 ...
Page 50: ...4 Getting Started 46 R5976690 XLM H25 03 09 2004 ...
Page 96: ...9 Programmable Function Keys 92 R5976690 XLM H25 03 09 2004 ...
Page 102: ...B Standard Source Set up files 98 R5976690 XLM H25 03 09 2004 ...