Grass Valley 1200 Installation - Manual (Page 20)

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Section 1 Ñ System Overview
Keyers
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One effects keyer and one downstream keyer (DSK) standard. A
second effects keyer is optional.
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Each keyer is a self-contained submodule that mounts on the Keyer
Board. Keyers can be swapped for troubleshooting.
■ Each keyer creates luminance, linear, and preset pattern keys from any
Key Bus input. Keys can be split (separate source and fill crosspoints).
■ One Chroma Keyer option submodule mounts on the Crosspoint Board
and can be assigned to any of the three keyers. Can create a chroma key
from any Key Bus input and includes its own adjustable force box
mask.
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Effects backgrounds and keys can be transitioned on or off separately
or simultaneously.
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Separate DSK controls include cut, frame-accurate automatic mix, and
frame-accurate to black.
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Keys can be inverted and masked, and key layers can be adjusted for
layer opacity and edge softness.
■ Selectable priority (which effects key layer appears over the other).
■
Effects Send enables flying switcher luminance/linear keys, chroma
keys, and preset patterns over switcher backgrounds using an external
DPM. (Effects Send/Aux Output option required.)
■ Z-Keyª Depth option submodule mounts on Program or Preview
Mixer Board and allows keying from Graphics Factory or Kaleidoscope
depth inputs. Depth is adjustable.
■ Optional Borderline ¨ Key Edger submodule mounts on each keyer
submodule and adds borders, drop shadows, outlines, or extrusions to
key effects. Up to three options may be installed (one per keyer).
Interfacing
■ A single interconnecting cable carries data between the frame and the
control panel.
■ Ports may be programmed for various protocols, baud rates, etc.
■
Contact-closure GPI interface includes 8 inputs for external triggering
of switcher operations and 8 outputs for switcher triggering of other
devices. GPI Outputs can be synchronized with switcher transitions.
All GPIs, inputs and outputs, are programmable to be activated from a
wide range of switcher events.
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Sixteen tally relay outputs corresponding to the 16 video/key inputs.
■ Optional Satellite Auxiliary Bus Control Panel can be installed at a
remote location for remote control of Auxiliary Buses.