Microprocessor Control of a Fast Analog-to-Digital Converter for an Underwater Fiber Optic Data Link

This thesis reports on the design and evaluation of a microprocessor-controlled, high-speed analog-to-digital converter. The processor supervises and manages the digital conversion, split-phase encoding Manchester and framing of the input signal. This converter is designed to be applied in an underwater package which will serially transmit sensor data over a fiber optic link to a shore station. This intelligent sensor will provide for ease of future system enhancements. An example would be the implementation of one package to multiplex several analog channels from a local sensor network over the single fiber optic link to the shore station. Keywords Analog-to-Digital converter, Digital conversion, Split phase encoding, and Manchester.