4-3-1 Color Coordinates (Temperature)
Color temperature is a measurement of the
radiant energy transmitted by a color. For
computer monitors, the color temperature refers
to the radiant energy transmitted by white. Color
coordinates are the X and Y coordinates on the
chromaticity diagram of wavelengths for the
visible spectrum.
CONDITIONS
Measurement instrument: Color analyzer
Scanning frequency:
91 kHz / 85 Hz
Display Size :
312 (H) x 234 (V)
Display image:
White flat field at
center of display area
Brightness:
Cut-off
Contrast:
Maximum
PROCEDURE
Use the directions in sections 4-3-2 through 4-3-4
to adjust the color coordinates for:
9300K to x = 0.283 ± 0.02, y = 0.298 ± 0.02
6500K to x = 0.313 ± 0.02, y = 0.329 ± 0.02
5000K to x = 0.346 ± 0.02, y = 0.359 ± 0.02
4-3-2 Color Adjustments for 9300K
4-3-2 (a) BACK RASTER COLOR ADJUSTMENT
CONDITIONS
Scanning frequency:
91 kHz / 85 Hz
Display image:
Back raster pattern
Brightness:
Cut-off
Contrast:
Maximum
1. Select
COLOR CHANNEL 1
to control the
color for 9300K.
2. Adjust the luminance of the back raster to
between 0.5 to 0.7ft-L using the “
GREEN
CUTOFF”
controls.
3. Use control bar after selecting
“BLUE
CUTOFF”
in left menu to set the “y”
coordinate to 0.298 ± 0.015
4. Use control bar after selecting
“RED
CUTOFF”
in left menu to 0.283 ± 0.015
* If color values would not be matched desirable
values, repeat sequence 3 and 4 after readjusting
“GREEN CUTOFF” control a little different.
4-3-2 (b) G-GAIN ADJUSTMENT
Figure 4-8. Green Box Pattern
CONDITIONS
Scanning frequency:
91 kHz / 85 Hz
Display image:
Green box pattern
Brightness:
Cut-off
Contrast:
Maximum
1. Click on the << or >> box next to
G_GAIN
to
adjust the brightness of the Green Gain to
40 ± 1 ft-L.
4-3-2 (c) WHITE BALANCE ADJUSTMENT
CONDITIONS
Scanning frequency:
91 kHz / 85 Hz
Display image:
Full white pattern
Brightness:
Cut-off
Contrast:
Maximum
Figure 4-9. Full White Pattern
1. Click on the << or >> boxes next to
R_GAIN
and
B_GAIN
to make the video white.
(For 9300K color adjustment:
x = 0.283 ± 0.02, y = 0.298 ± 0.02.)
Note:
Do not touch the
G_GAIN
controls.
2. Check the ABL. If it is not within the
specifications (30 ± 1 ft-L), use the ABL
controls to adjust it.
3. Select
COLOR FACTORY SAVE
to save the
data.
4 Alignment and Adjustments
4-4
CF21M*
4-3 Color Adjustments
1/3H-1/2H
1/3V-1/2V
FRONT BEZEL OPENING
BACK RASTER
GREEN WINDOW
FRONT BEZEL OPENING
BACK RASTER
WHITE WINDOW
Summary of Contents for CF21M
Page 7: ...CF21M 6 1 6 Exploded View and Parts List ...
Page 17: ...10 Schematic Diagrams 10 6 CF21M 1 368 V IC601 1 ...
Page 19: ...10 Schematic Diagrams 10 8 CF21M 19 IC103 5 24 15 CRT Socket Red Green Blue 20 R G B Video ...
Page 21: ...10 Schematic Diagrams 10 10 CF21M Memo ...
Page 22: ...Memo 9 Wiring Diagram 9 2 CF21M ...
Page 23: ...Memo 8 Block Diagrams 8 2 CF21M ...
Page 48: ...Memo 7 Electrical Parts List 7 26 CF21M ...
Page 49: ...7 Electrical Parts List CF21M 7 27 Loc No Code No Description Specification Remarks ...
