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Functional Description
Each M/E has two keyers and two background buses (A and B) as
inputs. In standard mode, Keyers 1 and 2 can be mixed into a
composite video and key which can be forwarded to the output,
or M/E 1 can be reentered into M/E 2. In layered mode,
Background Buses A and B are also used as keyers.
Preview capability allows monitoring of sources at many points in
the signal flow. You can preview video from the M/E mixers,
switched preview bus, or mask bus.
Eight GPI inputs are provided. You can assign each of the GPI
inputs via the GPI Input Menu to perform a specific function
when triggered.
The editor interface consists of an asynchronous RS-422, 38.4K
baud serial communications port, managed by a communications
processor. Refer to the Model 2200/3000/4000
Serial Protocols
manual for information on software functions and protocols
observed by the editor port.