X64-AN Quad User's Manual Theory of Operation 33Theory of OperationCamera Control and SynchronizationSource of SynchronizationThe X64-AN Quad can use a variety of synchronization sources allowing it to interface with variouscameras. All four inputs can make use of their own horizontal sync (HS), vertical sync (VS), framereset and WEN signals. The Acquisition and Control Unit (ACU) is the main controller responsible forsupervising the acquisition process. It manages all the signals coming from the cameras and recoversthe timing information to accurately digitize the video signal into pixels.SyncExtractorACUControllerPulseGeneratorADCInput Video PixelsACUSampling ClockVSHSVSHSCompositeVideoWENCamera TriggerExternal Trigger StrobePulseGenerator4 x 1 MuxFigure 15: Synchronization Block Diagram: 1 Input ShownAdditional details on the various synchronization modes follow.
