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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 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 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. ==References== * 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Master frequency generator」の詳細全文を読む スポンサード リンク
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