Christie Roadie HD+35K User Manual page 118

Section 3: Operation
Test Pattern Grey Level
Set the desired level of gray for displaying in the full gray field test pattern.
Freeze Image
Enter a check mark to freeze (stop) an image at 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 deinterlacing/resizing and signal
noise. Remove the check mark 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/disabled by entering the corresponding function
code listed on the back of the standard IR remote.
Odd Pixel Adjustment
NOTES: 1)
Factory-set and rarely required by user.
When using certain RGB sources, you may need to adjust the normal gain or offset of odd pixels in relation to
even pixels. This smooths out very narrow (1-pixel wide) "checks" or vertical stripes that indicate adjacent
"on" and "off" pixels. Although Offset and Gain slidebars can be adjusted individually and manually, using the
Level Detector
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.
3-52
Diagnostics and Calibration
1. Test Pattern
2. Grey Level
Freeze Image
3.
4. Color Enable
5. Odd Pixel Adjustment
6.
Peak Detector
7.
8. Level Detector
9. Level Value
0. Aspect Ratio Overlay
Lens Center
ILS Calibration
Figure 3-30 Diagnostics and Calibration
simplifies this process (see )
Grid
512
White
Reserved
512
Reference Calibration
2)
Source must be >90 MHz.
Roadie HD+35K User Manual
020-100340-02 Rev. 1 (01-2010)