Vidikron Vision 150 User Manual

Pixel Phase: Adjust pixel phase when the image (usually from an RGB source) still shows 
shimmer or “noise” after pixel tracking is optimized. Pixel phase adjusts the phase of the pixel 
sampling clock relative to the incoming signal. 

For best results, use a good test pattern such as a smooth gray consisting of a clear pattern of 
black and white pixels, or a similar “half on, half off” graphic image. Adjust the slidebar until 
the image stabilizes and each pixel is clearly defined. You may notice that you can stabilize 
the image at more than one point; for example, you may find that the image appearance at 
“11” is identical to the image appearance at “38.” Use either setting in such cases. If some 
shimmer from a video or HDTV source persists, use the “Filter” control in the Image Settings 
menu (described later) to remove high-frequency noise from the signal. 

Horizontal Shift: This option moves the image right or left within the area of available pixels.

Vertical Shift: This option moves the image up or down within the area of available pixels.

Use options in the Picture Quality menu to alter your image without affecting its size or 
position. Changes made in this menu are applied immediately and saved when you exit the 
menu. Options not available for the projector model or source are disabled and appear dim 
(gray). 

White Level (Contrast): “White Level” increases or decreases the perceived difference 
between light and dark areas of your image (0-100). For best results, keep it under 50. If the 
White Level is too high, the light parts of the image lose detail and clarity. If it is too low, the 
light areas will not be as bright as they could be and the overall image will be dim. For best 
results, start with a low value and increase so that whites remain bright but are not distorted 
or tinted and that light areas do not become white (“crushed”). 

Black Level (Brightness): “Black Level” increases or decreases the amount of black in the 
image (0-100). For best results, keep close to 50. Start with a high value and decrease so that 
dark areas do not become black (“crushed”). Conversely, high brightness changes black to 
dark gray, causing washed-out images. 

Gamma: “Gamma” is a global setting that determines how gray shades are displayed 
between minimum input (black) and maximum input (white) for all signals. The normal 
gamma setting of 2.2 is correct for virtually all signals and conditions. If excess ambient light 
washes out the image and it becomes difficult or impossible to see details in dark areas, 
lower the gamma setting to compensate.