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Control Using GPI Signals
A/B Roll Editing
Signal flow
Player VCR A
Foreground bus
video
Background bus
video
Player VCR B
Control signal
5-12
Chapter 5 Control From Editing Control Units
The flow of signals in A/B roll editing is as follows.
For more information about connections, "see Connections for an A/B Roll
Editing System" (page 6-5).
DFS-700/700P
VIDEO
INPUT
VIDEO
INPUT
Control signal
Editing control unit
Note
To improve editing accuracy, supply a reference sync signal to the editing control unit and
the VCRs from the BLACK BURST OUT connectors on the DFS-700/700P.
Signal flow in A/B roll editing
Recorder VCR
PGM OUT
GPI signals
Control signal
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