THOMSON GRASS VALLEY KayakDD-1, User Manual

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KayakDD - Digital Production Switcher
2.7.1 Alternate Buses and Delegation
Many earlier generation switchers had M/Es equipped with two keyers, and each M/E
could accept two background sources. This permitted mixing or wiping between two
backgrounds, and keying up to two additional sources over the background. Dedicated
rows of control panel buttons were used to select these key and background signals.
The KayakDD system M/E actually has four keyers, each handling a fill and a key
signal, and it can accept three background sources (A, B, and Utility). Providing
individual source selection rows for each bus is impractical, as the panel would
become too large. For ease of use, KayakDD panels have alternate buses accessed
by delegation, using Key and PVW/AUX delegation via the
Miscellaneous Bus
selection subpanels.
2.7.2 Utility Bus
Besides the standard A and B background inputs, each KayakDD also accepts a Utility
input. The Utility bus can be used to select signals for special purposes, and has no
relation to the background buses. For example, a video signal selected on the Utility
bus can be used to feed a custom pattern into a wipe generator, or create a custom
border wash pattern.
2.7.3 Effects Send
Effects Send provides a method of integrating digital effects devices into the M/E.
Effects Send switches the key cut and key fill outputs of the keyer of the M/E to a
digital effects device for manipulation. The manipulated key cut and key fill outputs are
then received and sent directly to the inputs of the mixer circuits of the M/E. Effects
Send allows you to process a key effect as though the digital effects circuits were
located inside the M/E itself.
On the KayakDD system, Effects Send is integrated into the M/E and is an extension
of the keying control system.
Figure 6 Effects Send Diagram
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