Grass Valley Karrera Video Production Center Installation v.4.1 - Manual (Page 114)

114 KARRERA — Installation & Service Manual
Section 5 — Basic Configuration
4. If the source includes a key signal, select Linear key with the lower touch
buttons. Then touch the Key Input data pad and enter to the input
number of the connector the source will use for the key.
Note For Chroma keys you can select either Linear or No Key. Chroma keys always
use the video signal for keying, ignoring any separate key signal.
5. If desired, define Clip High and Clip Low values (used when a fixed linear
key is selected for that source) with the labeled soft knobs and data
pads.
External Device Source Definition
The Device and Router Source Type buttons are used to set up a source as an
external device (including GPI and Peripheral Bus II controlled devices), or
as a Router source. See Section 6-External Interfaces for information on con-
figuring external devices.
Source Naming Background Information
Facility engineers need to know the exact routing of all the video signals
connecting all the devices they are responsible for. These engineers need to
be able to identify video signals in a way that will help them connect
devices properly. Production personnel, on the other hand, are interested in
the content they work with for their shows, and are generally not con-
cerned about which individual device or routing path is used to make those
signals available. They just need a way to identify the content and access it
when they need it. To support these differing needs, two source naming
mechanisms are available on Karrera systems.
Engineering Names, Eng IDs, and Logical IDs
Engineering names are intended to identify a source as it applies to a spe-
cific facility. In a truck, for example, cameras may be hard wired to the pro-
duction switcher and might be given Engineering names 1, 2, and 3. Names
like Patch 14 or Rtr 5 may be used for inputs that are patched or routed.
Engineering names are entered in the Eng Setup Source Definition menu,
as described above. Engineering source IDs are numeric only, and are avail-
able on data pads and scroll knobs for quick selection. The Karrera system
also has logical IDs, that can be used for source patching, as explained later.
Alternative Source Names
Alternative names can be assigned to sources for the convenience of pro-
duction personnel. For example, you may give the cameras menu names
that include the operator (C1 Bob, C2 Phil, and C3 Bill), but remove the
operator names from the OLED names to show C1, C2, and C3 in larger
characters. These alternative names are entered in the Source Patch Menu.