Introduction

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    Both the Mark IV and VLBA VLBI terminals use now obsolete ananlog electronics for mixing up to 14 and 8 channels respectively down to baseband. A poject was started a few years ago to develop digital converters/mixers for this task. Gino Tuccari of Noto Observatory designed and develops such a system. MPIfR (M. Wunderlich) designed the analog to digital converter boards. The first and second versions are ready now. A VSI to 10 GE converterboard will be ready in a few months.

    The production of DBBC Version 2 (DBBC.2) is about to start. From January 2009 on DBBCs can be ordered from a spin-off company called HAT-Lab, founded by IRA-INAF and supported by MPIfR (1 technician working here 1/2 time).

    Documents connected to the dBBC project

    2nd Critical design review in Bologna on 23.4.2007

     

    Tuccari's description of the DBBC

    Tuccari_DBBC_CDR.pdf

    Tuccari's more detailed answers to some questions

    CDR_Tuccari_doc.pdf

    Gino Tuccari's replies to the committee's questions

    CDR_Tuccari_answers.doc

    NRAO view presented by Jon Romney

    Romeny_NRAO.ppt

    Haystack developemt presented by Alan Whitney

    Whitney_Haystack.ppt

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