Grass Valley Kayenne v.3.0 - Manual (Page 30)

30 KAYENNE — User Manual
Section 2 — Concepts
to use effects in different environments. For example, effects created in one
production truck equipped with one set of devices can be used in a dif-
ferent truck with different devices by modifying the source patch table.
Source Patching associates all attributes of a defined source’s tally and attri-
butes if included, for example: key signal, external device settings, and
router destination settings.
Source Memory
Keying and other parameters can be saved to a separate source memory for
every Kayenne system source. These parameters can be applied automati-
cally whenever that source is selected. See Source Memory
on page 65 for spe-
cific information.
Buses and Crosspoints
A bus is technically defined as a signal path where one of several available
inputs can be selected to feed a single output. A crosspoint is an electronic
switch that allows a signal to pass when the switch is closed. On video
switchers, a bus can be constructed containing a series of crosspoints,
which permits selecting which one of several incoming signals will be sent
out the bus. In
Figure 9 , source 2 has been selected on the background A
bus. This signal can now be called background video and is available for
further processing.
Figure 9. Buses with Crosspoints
Buttons on a Control Panel can be used to control the switching of cros-
spoints. The buttons are usually arranged horizontally, making it easy to
imagine the available signals coming in from the top, and the single bus
output signal going out the right side.
In earlier generation switchers, the terms crosspoint button and crosspoint bus
have been used in reference to Control Panel source selection. For a
Kayenne system, the terms source button and source bus will be used. These
terms better reflect a system operating philosophy that is based on sources
rather than crosspoints. The Kayenne system does not directly associate a
source select button with a physical crosspoint. The association goes first
Background A Bus
Source Signal Inputs
1 2 3 4 5
Crosspoint
Switch
Signals Continue to Other Buses
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