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External key input
Extra key inputs that may be accessed by keyboard that do not appear on the bus rows. Traditionally, these inputs are used only for luminance keys, such as simple character generators or titling cameras; however, they are not limited to this on Ampex switchers. These are sources 9 and 0 on 4100 series switchers, and 31 and 32 on AVC switchers.
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- Part of Speech: noun
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- Industry/Domain: Entertainment
- Category: Video
- Company: Tektronix
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