Grass Valley Kayak HD Installation v.6.8.8 - Manual (Page 30)

30 Kayak HD — Installation and Service Manual
Section 1 — System Overview
Video Signal Flow
The basic video signal flow ( Figure 11 on page 31 ) of the Kayak HD system
has been designed for operational flexibility. For example, all the outputs
from the M/E are routed back to the video crosspoint matrix, making all
these signals accessible to the entire system.
The video inputs to the Video Processor frame can be mapped to any of the
crosspoint buttons.
Internally generated white, black and three color backgrounds are also
available sources, as are the six RAMRecorder outputs. This source-to-
button mapping is performed through the touch screen menu and can be
stored as a user profile for any number of individual users. Button mapping
is the same on all buses.
The selected video on each bus is deserialized and reclocked before
entering the video processing circuitry. Video processing is available for
each separate M/E background, Key, and Utility bus. In addition, contrast,
brightness, and hue can be adjusted on a bus-by-bus basis.
Each M/E has four full-function keyers with optional internal Digital
Picture Manipulator effects. Each keyer has access to its own wipe gener-
ator as well as a pair of standard flexible chroma keyers which may be
assigned to any keyers in the system. Two complex wipe generators serve
each M/E, providing a wide range of wipe choices with modulation, rota-
tion and multiplication of each one. Wipe signals can also be taken from the
two Utility buses on the M/E.
The outputs from M/E Program, Preview, and clean feed are fed back to the
crosspoint circuitry for the selection on the Auxiliary buses as well as the
clean feed output.
The AUX bus outputs can be utilized in a number of ways. Every AUX bus
provides individually adjustable safe area and crosshair (center cross)
capability. Each AUX bus is timed to the reference.