Freeze Image; Odd Pixel Adjustment; Using “Odd Pixel Adjustment”; Color Enable - Christie Roadster User Manual

Roadster, Matrix WU, Mirage S+/HD/WU User Manual
020-100002-05 Rev. 1 (02-2010)

Freeze Image

Enter a check mark to freeze (stop) an image on a single frame. This diagnostic tool
is useful if you need to examine in detail a still version of an incoming image that
cannot be "frozen" at the source. For example, in moving images it is sometimes
difficult to observe artifacts such as external de-interlacing/resizing and signal noise.
Remove the checkmark to return back to normal.

Color Enable

Select which color or colors you want to see. This is useful while working with color
temperature, input levels or other special setup parameters. Colors can also be
enabled or disabled by entering the corresponding function code listed on the back of
the standard remote keypad.

Odd Pixel Adjustment

NOTES: 1) Factory-set and rarely required by user. 2) Source must be >90 MHz
When using certain RGB sources, you may need to adjust the normal gain or offset of
odd pixels in relation to even pixels. This will smooth out very narrow (1-pixel wide)
"checks" or vertical stripes that indicate adjacent "on" and "off" pixels. Using the
Level Detector simplifies this process (see Figure 3.25):
1. Use an external analog native-sized continuous grayscale test pattern with at least
256-levels.
2. Turn "Level Detector" on.
3. Set "Level Value" to ~200. The image should now be black-and-white (or black-
and-one color, if you use "Color Enable" function).
4. Adjust offset. Half of the pixels will move, the other half will not.
5. Adjust until the two transition regions overlap. The stripe of noise will be
minimized, defined by the value in the slidebar.
6. Set "Level Value" to ~800. The image should now be black-and-white.
7. Repeat Steps 4 and 5, but adjusting gain.
8. Repeat Steps 3-7 for all remaining colors. Your RGB source should now be OK.
Two sets of values are automatically saved with these controls—one value for Input
#1, and one for Input #2 (analog). The current set of values depends on which source
is in use. This enables a source to be processed correctly via two different inputs.
Odd Pixel Adjustment
1. Red Odd Pixel Offset
2. Red Odd Pixel Gain
3. Green Odd Pixel Offset
4. Green Odd Pixel Gain
5. Blue Odd Pixel Offset
6. Blue Odd Pixel Gain
7.
8.
9. Auto Color Enable
0.
Figure 3.25. Using "Odd Pixel Adjustment"
128
145
128
128
116
128
Level Detector
Level Value 200
Color Enable White
Input Levels
Operation
Set to ~ 200
& adjust Offset.
Set to ~ 800
& adjust Gain.
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