Key Controls; Figure 200 Key Controls, Part1, Clip Hi, Clip Low, Opacity - THOMSON GRASS VALLEY KayakDD-1 User Manual

6.4.6

Key Controls

288
The purpose in adjusting Clip Hi and Clip Low is to cause the proper hole to be cut in
the background. All areas of the backing color should be full background while all
areas of the foreground should make the background completely invisible. The easiest
way to do this is to observe the key signal while making your adjustme
The smaller the difference between Clip Hi and Clip Low, the higher the keyer gain.
H igh gain amplifies noise present in the transition between transparent and opaque.
T he correct setting is with Clip Hi and Clip Low set to just barely achieve opacity and
transparency, respectively.
1. Touch the Key Controls data pads to activate these controls.
Data Pad 1 contains Clip Hi / Clip Low / Opacity
Data Pad 2 contains Size and Position
You can now manually adjust keyer clipping controls.
2. Press the Key PVW button on the Main control panel and look at the
preview output on a picture and waveform monitor.
Figure 204 Key Controls, Part1, Clip HI, Clip Low, Opacity
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