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Master frequency generator
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A '''master [[frequency]] generator''' or '''master electronic [[oscillator]]''', in [[frequency-division multiplexing]] (FDM), is a piece of equipment used to provide [[system]] end-to-end [[Carrier signal|carrier]] frequency [[synchronization]] and frequency accuracy of tones. The following types of oscillators are used in the [[Defense Communications System]] FDM systems: *Type 1 - A master [[carrier signal|carrier]] oscillator as an integral part of the [[multiplexer]] set. *Type 2 - A submaster oscillator equipment or slave oscillator equipment as an integral part of the multiplexer set. *Type 3 - An external master oscillator equipment that has extremely accurate and stable characteristics.
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