Image Number 5 for United States Patent #6069576.
An advanced multi-channel synchro-to-digital converting device for deliveg synchro data to a data bus, includes a digital-to-synchro synthesizer for generating synthesized analog synchro test signals, and switching for selectively substituting the synthesized synchro signals for synchro signals, with the selection of conversion channels and the magnitudes of the synthesized analog synchro signals both under the control of data on the data bus.
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