4. Operation
Using the Setup Menu
Following are descriptions of each Key Setup Menu function:
•Input Source — This field enables you to select the desired digital key source.
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Selections: 7, 8
Default: 7
Note
This field is bracketed once the key is on Program.
•Clip — This value adjusts the threshold of the video that "cuts" into the background image. A hole will be cut into the background anywhere that foreground luminance is greater than the clip level.
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Adjustment range: 0 to 1023
Default: 0
•Gain — This value adjusts the sensitivity of the keyer, enabling you to change the sharpness of the keyed image. Gain only affects the key hole, as set by the clip.
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Adjustment range: 0 to 1023.99
Default: 1.00
•Opacity — This value adjusts key opacity.
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Adjustment range: 0 (fully opaque) to 1023 (fully transparent)
Default: 1023
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H Offset — This value adjusts the key source’s horizontal offset (in pixels), if the key source’s resolution is greater than (or less than) the output resolution.
V Offset — This value adjusts the key source’s vertical offset (in pixels), if the key source’s resolution is greater than (or less than) the output resolution.
Tip
Always select the desired key source and adjust the key parameters prior to your production. The key must be visible on Program in order to visually adjust clip, gain and opacity.
Refer to the “Using Keys” section on page 95 for more information on using keys.
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