Grass Valley 1200 Operation Manual - Manual (Page 14)

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Section 1— Introduction
Features of the Model 1200
The Model 1200 Digital Production Switcher is a moderately-
priced yet powerful one mix/effects component digital mixer. It
offers the tremendous advantage of digital video as well as many
desirable mixing and special effects features:
■ Ten-bit component digital format for excellent signal quality
and virtually unlimited effects layering. Aspect ratio can be
set for 4:3 or 16:9 (13.5 MHz).
■ Up to 16 digital video or key inputs plus internal black and
background. Optional inputs may be parallel, serial, or some
of each. Inputs may be auto-timed, mapped to crosspoints,
and level-adjusted by built-in processing amplifiers.
■ Ten Crosspoint Switching Buses: Program Background,
Preset Background, Key 1 Source and Fill, Key 2 Source and
Fill, DSK Source and Fill, Auxiliary 1, and Auxiliary 2.
■ One effects keyer and one downstream keyer plus an optional
second effects keyer. Each keyer creates luminance, linear,
preset pattern, and chroma keys (optional) from inputs
selected on the Key Bus. Keys can be inverted and masked.
■ Optional Chroma Keyer accepts 4:2:2 or 4:4:4 inputs. Includes
adjustable background and foreground suppression and
choice of additive or multiplicative key.
■ Effects transition controls include cut, lever arm, and frame-
accurate automatic transition. Effect modes include Mix,
Wipe, and Cut. Effects backgrounds and keys can be
transitioned on or off separately or simultaneously.
■ Separate DSK controls include cut, frame-accurate automatic
mix, and frame-accurate fade to black.
■ Effects key layers can be adjusted for opacity and priority of
one key over another.
■ Z-Key™ Depth option accepts depth keys from Grass Valley
digital effects systems for compositing intersecting plane
effects with adjustable offset. Non-depth keys can be offset so
that new layers can be recorded between existing layers.