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Linux PC as oscilloscope

Discussion in 'Misc Electronics' started by Allan Adler, Aug 8, 2003.

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  1. Allan Adler

    Allan Adler Guest

    I've seen some free software for using one's PC under Linux as an oscilloscope.
    Before I get bogged down trying to do this, I'd be interested in hearing
    from other people who have used such software. I'm talking about RedHat
    Linux, not RT Linux, so I'm concerned about real time problems. Also,
    I don't know what kind of speed the oscilloscope is capable of. I have
    two old EICO 460 oscilloscopes and I am inclined to believe that the
    Linux PC as oscilloscope will be better than they are, but it would still
    be nice to know definitely. More generally, what would be the closest model
    oscilloscope to the PC oscilloscope in terms of its capabilities and
    reliability?

    Ignorantly,
    Allan Adler


    ****************************************************************************
    * *
    * Disclaimer: I am a guest and *not* a member of the MIT Artificial *
    * Intelligence Lab. My actions and comments do not reflect *
    * in any way on MIT. Moreover, I am nowhere near the Boston *
    * metropolitan area. *
    * *
    ****************************************************************************
     
  2. DarkMatter

    DarkMatter Guest


    Does this not also require that a data acquisition card be in the
    PC?

    I doubt seriously that the sample rate would be over 10MHz even.....
    if that much. And the iteration of it will be quite "grainy" as well,
    I'm sure.

    There are really nice data acquisition cards out there for less than
    $150, That'll do some VERY fast sampling rates.

    Nat'l Instruments... yada yada yada.
     
  3. Blake

    Blake Guest

    400 bucks, 100MHz scope for Linux:
    http://www.etcsk.com/linux/

    A radio-shack 20Ms/S scope:
    http://www.linuxtoys.org/pscope/pscope.html

    The bottom of the second page has a bunch of links.

    Blake
     
  4. DarkMatter

    DarkMatter Guest


    It isn't just software. It requires an EPP port.

    That means that they have a device that you hook up to get the data.

    100MHz and parallel ports don't seem to mix, to me. The device must
    merely send a low resolution data stream to the scope, giving the
    observer a dithered view of the real data.

    Not what I would call high resolve. I'd bet that a lot of
    information on a 100MHz signal would be unviewable to the user of the
    product.
     
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