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3-7Digital Display Scaler • Operation
Resolution and refresh rates submenu
Rotate the Adjust
knob while in this submenu to select one of the available
output resolutions.
Rotate the Adjust
knob while in this submenu to select one of the available refresh
(vertical scanning) rates. Selecting Lock enables the Extron Accu-RATE Frame Lock
™
(AFL
™
) feature. Accu-RATE Frame Lock eliminates image tearing and other
artifacts of scaling motion video by eliminating frame rate conversion. It exactly
matches the output rate of the DDS 402’s scaler to the frame rate of the selected
input. Select this feature if you will be using motion video sources with a display
that is capable of a variety of refresh rates.
The default resolution and refresh rate is 640 x 480 @ 60 Hz.
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Output Signal submenu
Rotate the either Adjust
or the Adjust knob counter clockwise while in this
submenu to select RGB video. Rotate the knob clockwise to select component (Y,
R-Y, B-Y) video for output.
Sync Polarity submenu
The display or projector may require a particular combination of horizontal (H) and
vertical (V) sync signal polarities. Select the appropriate combination of positive or
negative H and V sync by rotating either the Adjust
or the Adjust knob.
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