X64-AN Quad User's Manual
Theory of Operation
33
Theory of Operation
Camera Control and Synchronization
Source of Synchronization
The X64-AN Quad can use a variety of synchronization sources allowing it to interface with various
cameras. All four inputs can make use of their own horizontal sync (HS), vertical sync (VS), frame
reset and WEN signals. The Acquisition and Control Unit (ACU) is the main controller responsible for
supervising the acquisition process. It manages all the signals coming from the cameras and recovers
the timing information to accurately digitize the video signal into pixels.
Sync
Extractor
ACU
Controller
Pulse
Generator
ADC
Input Video
Pixels
ACU
Sampling Clock
VS
HS
VS
HS
Composite
Video
WEN
Camera Trigger
External Trigger
Strobe
Pulse
Generator
4 x 1 Mux
Figure 15: Synchronization Block Diagram: 1 Input Shown
Additional details on the various synchronization modes follow.