Ops 4–2 • Switcher Basics Vision Operator’s Manual (v12.0 MD)
Switcher Operation Overview
The Vision switcher operates by routing video signals through the various boards and cards in the
frame and feeding them out of the assigned Output BNCs. Which MLE a source is selected on, or
which key on that MLE, determines how each of those video signals is layered in the video
output.
Video Routing
How video is routed through the Vision switcher depends on the frame you have.
Video Routing Through the Octane/QMD-X and MD-X Frame
Video routing for the Octane/QMD-X and MD-X frame is handled by the various boards installed
in the frame. The boards primarily responsible for video routing are the Crosspoint Board, the
Video Processor Board, and the Squeeze & Tease MD Carrier Board (Figure 4.1). Each of
these boards work together with the Midplane and the Video Input and Output Boards to take
an input video signal, manipulate it, and route it to the desired output.
Figure 4.1 Frame — Video Routing
From the Video Input Board, all the video signals are routed to the Crosspoint Board. The
video signals can include Global-Store images from the Frame CPU Board and the MLE-Store
images from the XFX Card on the Video Processor Board. Depending on what is selected on
the crosspoint buses of the switcher, the video signals are routed to the Video Processor Board to
be mixed for a transition, or keyed. If a Squeeze & Tease effect is selected, the video signals will
be routed to the Squeeze & Tease Carrier Board. After all the video has been manipulated, it is
sent back through the Crosspoint Board to be routed to the required output on the Video Output
Board. All this happens in real-time.
Video Routing Through the QMD and MD Frame
Video routing for the QMD and MD frame is handled by the various boards installed in the frame.
The boards primarily responsible for video routing are the Video Input with Crosspoint Board,
the Video Processor Board, and the Squeeze & Tease MD Carrier Board (Figure 4.2). Each of
these boards work together with the Midplane and the Video Output Board to take an input
video signal, manipulate it, and route it to the desired output.
Video Input
Board
Video
Processor
Board
Frame CPU
Board
Squeeze &
Tease Carrier
Board
Crosspoint
Board
Video Output
Board
Video Input 1
Video Input 2
Video Input 3
Program Out
Preview Out
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