<Technical Note>OPENCORE NMR Spectrometer: Open-source core modules for implementing an integrated FPGA-based NMR spectrometer

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  • <技術ノート>FPGA集積型NMR分光計(OPENCORE NMR Spectrometer)の開発
  • FPGA集積型NMR分光計(OPENCORE NMR Spectrometer)の開発
  • FPGA シュウセキガタ NMR ブンコウケイ OPENCORE NMR Spectrometer ノ カイハツ

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One possible design of a home-built NMR spectrometer is presented, in which a Field-Programmable Gate-Array (FPGA) is fully exploited. An FPGA is an LSI composed of a large number of programmable logic gates, in which digital circuits called the "core modules" can be built by writing hardware description codes. In principle, an FPGA can realize any digital circuits within limitations set by the available number of logic elements and the operation speed. In this work, a single FPGA chip is let do all the digital jobs required for an NMR spectrometer. It is shown that a handy and operational three-channel NMR spectrometer can be built by combining the core modules for the digital NMR spectrometer with non-digital peripheral components. These core modules as well as circuit diagrams, board designs, etc., are freely available on HUhttp://kuchem.kyoto-u.ac.jp/bun/indiv/takezo/opencorenmr/index.htmlUH. By letting these information open to public, I encourage the potential users not only to utilize this spectrometer, referred to as the OPENCORE NMR spectrometer (after the "open" "core" modules), but also to modify it so as to meet their own needs. A home-built spectrometer serves a complementary role to the sophisticated commercial spectrometer when one needs to modify the hardware inside the spectrometer in order to put new ideas into practice. Let us promote new and exciting NMR works!

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