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Hart protocol

Discussion in 'Electronic Design' started by Palinurus, May 24, 2005.

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  1. Palinurus

    Palinurus Guest

    Does anyone know where I can find out more about this without a major
    outlay? Our shop has several instruments that communicate with it, but
    the official keeper of the documentation, (a "non-profit" organization, har
    har) wants $775 for it. The hardware is trivial, just 1200 baud modem
    tones riding on a 4-20 mA current loop, and all we need is the basic
    syntax and a few commands.
  2. Shove it into an Apple IIe game paddle port and record the sucker.

    Worked like a champ to find the obscure Radio Shack temperature codes.

    Many thanks,

    Don Lancaster
    Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
    voice: (928)428-4073 email:

    Please visit my GURU's LAIR web site at
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