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Planar PD7170 Installation/Operation Manual 53
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•Offset: Use the Offset controls in the RGB Adjust sub-menu to correct color
imbalances in the dark areas of the image. A good way to do this is to use a
test pattern consisting mostly of dark gray areas, such as a 30 IRE “window”
pattern. If the gray areas contain traces of red, green or blue, decrease the
Offset for that color.
The Gain controls increase or decrease the full-scale input range; the Offset
controls shift the entire range, resulting in a change in brightness.
Fine Sync: To fine-tune the position and other image attributes, choose Fine
Sync from the Advanced menu and press ENTER. This displays the Fine Sync
sub-menu, shown in Figure 4-10.
Figure 4-10. Fine Sync Sub-Menu
•V Position: This control adjusts the vertical position of the image within the
designated image area, up to 25 per cent of the image height up or down.
• H Position: This control adjusts the horizontal position of the image within the
designated image area, up to 25 per cent of the image width left or right.
• Phase (RGB or Component sources): This control adjusts the phase of the
pixel sampling clock relative to the incoming signal. Adjust the phase when
an RGB or Component image still shows shimmer or “noise” after
Tracking has
been optimized.
Generally, higher Gain settings reduce the image contrast;
higher Offset settings reduce the image brightness.
Note