Texas Instruments DW30, MATRIX 3000 user manual Size, Vertical Stretch, Pixel Track, Pixel Phase

Section 3: Operation

• Select “ANAMORPHIC” to display an anamorphic image

in its native 16:9 aspect ratio. The image will fill the screen from side-to-side and be centered between black bars at top and bottom.

Size

“Size” controls both the image width and height in tandem, maintaining the current aspect ratio (proportion) of the displayed signal data.

Vertical Stretch

“Vertical Stretch” adjusts the height of the image while keeping the width constant. Use “Vertical Stretch” to change the aspect ratio of the display.

Pixel Track

Steady flickering or several soft vertical stripes or bands across the entire image indicates poor pixel tracking. Proper pixel tracking helps ensure that the image quality is consistent across the screen, that aspect ratio is maintained, and that pixel phase can be optimized (described below). Tracking determines the frequency of the pixel sampling clock, indicated by the number of incoming pixels per line, so that all pixels generated by a particular source are sampled.

NOTE: By default, the projector samples at the correct frequency for most sources.

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, such as the Windows shutdown screen. Adjust the slidebar until the vertical stripes broaden to the point where one large stripe fills the image. If the image still exhibits some shimmer or noise, adjust Pixel Phase (below).

Pixel Phase

NOTE: Adjust “Pixel Phase” after “Pixel Tracking”.

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, such as the Windows shutdown screen. 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—i.e., you may find that the image appearance at "11" is identical to the image appearance at "38", thus you can use either setting.

If some shimmer from a video or HDTV source persists, use the “Filter” control to remove high-frequency noise from the signal.

3-22 Christie DS+60/DW30/Matrix 3000 User’s Manual 013-100149-02 Rev. 1 (01/07)