APPENDIX D : CONTRAST MODULATION
R5975238 BARCOVISION 701 MULTIMEDIA 070497
APPENDIX D : CONTRAST MODULATION
APPENDIX D : CONTRAST MODULATION
R5975238 BARCOVISION 701 MULTIMEDIA 070497
APPENDIX D : CONTRAST MODULATION
D-2
D-2
Basic concept
Adjustment procedure :
Start up the adjustment mode by pressing ADJUST (see also chapter 'Start up of the
adjustment mode')
Highlight Random Access with the control disk and press ENTER to start up the
Random Access Adjustment mode
(see also chapter Random Access
Adjustment mode). The Random
Access Adjustment Mode main
menu will be displayed.
When the Contrast Modulation op-
tion is installed, the projector auto-
matically detects this option and
displays the selection (activation)
line in the Random Access Adjust-
ment Mode main menu.
Highlight CONTR. MODULATION
with the control disk and press EN-
TER to select.
Note : An external generated white
image will be useful during the ad-
justment.
ENTER selects the Contrast Modulation
menu.
EXIT returns to the Path Selection menu.
ADJUST returns to the Operational mode.
RANDOM ACCESS
ADJUSTMENT MODE
Select with or
<ENTER> to accept
<EXIT> to return
636g
PICTURE TUNING
GEOMETRY
CONVERGENCE
COLOR SELECT
COLOR BALANCE
ORBITING
CONTR. MODULATION
SOFT EDGE
Note : be sure the horizontal phase
is correctly adjusted. The image
must be centered on the raster with
the horizontal phase adjustment,
otherwise it is not possible to adjust
the contrast modulation correctly.
Basic concept
Adjustment procedure :
Start up the adjustment mode by pressing ADJUST (see also chapter 'Start up of the
adjustment mode')
Highlight Random Access with the control disk and press ENTER to start up the
Random Access Adjustment mode
(see also chapter Random Access
Adjustment mode). The Random
Access Adjustment Mode main
menu will be displayed.
When the Contrast Modulation op-
tion is installed, the projector auto-
matically detects this option and
displays the selection (activation)
line in the Random Access Adjust-
ment Mode main menu.
Highlight CONTR. MODULATION
with the control disk and press EN-
TER to select.
Note : An external generated white
image will be useful during the ad-
justment.
ENTER selects the Contrast Modulation
menu.
EXIT returns to the Path Selection menu.
ADJUST returns to the Operational mode.
RANDOM ACCESS
ADJUSTMENT MODE
Select with or
<ENTER> to accept
<EXIT> to retu rn
636g
PICTURE TUNING
GEOMETRY
CONVERGENCE
COLOR SELECT
COLOR BALANCE
ORBITING
CONTR. MODULATION
SOFT EDGE
Note : be sure the horizontal phase
is correctly adjusted. The image
must be centered on the raster with
the horizontal phase adjustment,
otherwise it is not possible to adjust
the contrast modulation correctly.
horizontal light output
100%
50%
vertical
light output
100%
50%
horizontal light ouptut
100%
50%
vertical
light output
100%50%
red
green
blue
horizontal light output
100%
50%
vertical
light output
100%
50%
horizontal light ouptut
100%
50%
vertical
light output
100%50%
WITHOUT CONTRAST MODULATION
WITH CONTRAS T MO DU LA TIO N
75%
75%
red green
blue
CORNER
FALL OFF
COLOR
SHIFT
CORNER
FALL OFF
COLOR
SHIFT
Image
Image
Image
Image
horizontal light output
100%
50%
vertical
light output
100%
50%
horizontal light ouptut
1
00%
5
0%
vertical
light output
100%50%
red
green
blue
horizontal light output
100%
50%
vertical
light output
100%
50%
horizontal light ouptut
100%
50%
vertical
light output
100%50%
WITHOUT CONTRAST MODULATION
WITH CONTRAS T MO DU LA TIO N
75%
75%
red
green
blue
CORNER
FALL OFF
COLOR
SHIFT
CORNER
FALL OFF
COLOR
SHIFT
Image
Image
Image
Image