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Oscilloscope through Soundcard

Discussion in 'Electronic Basics' started by ECGK, Dec 15, 2004.

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  1. ECGK

    ECGK Guest

    i came across a software that wroks as an oscilloscope using soundcard.
    is it safe ? has anyone tried doing it.
     
  2. Jamie

    Jamie Guest

    if audie is all you need then its fine.
    just make sure you don't exceed the cards input
    using a line input i wouldn't go above 1 V Peak.
    using the Mic input i wouldn't go above .100 VP.
     
  3. izzi4

    izzi4 Guest

    I've heard about these before but never tried it, anyone have any other
    input? Or suggested software?
     
  4. Bob Masta

    Bob Masta Guest

    My Daqarta for DOS software does this for Sound Blaster and
    a few other cards, and Daqarta for Windows (available in a few months)
    will do it for any Windows-compatible sound card.

    As others have noted, you are limited to audio frequency ranges.
    The calibration of the input attenuator on sound cards is not
    generally available. Daqarta for DOS handles this by having
    different drivers for different card types that I have personally
    measured. Daqarta for Windows will use a self-calibration
    method for relative calibration, and assist with absolute
    calibration. You never get a nice 1,2,5 sequence, but since
    the software can change the axis scaling and grid, this is of
    no importance. The main thing is that for inputs of more than a few
    volts, you may need to provide your own external voltage
    divider.

    The big advantage of these types of systems is that test signal
    generation can be done coherently with input analysis,
    without relying on setting trigger levels, etc. This allows
    waveform averaging for noise reduction, for example.

    And since it's all just software anyway, you can have spectrum
    analysis, spectrograms, histograms, etc. all in the same
    package. For audio work, having a real-time spectrum is
    really useful for distortion measurements.

    Hope this helps!


    Bob Masta
    dqatechATdaqartaDOTcom

    D A Q A R T A
    Data AcQuisition And Real-Time Analysis
    www.daqarta.com
     
  5. Guest

    i came across a software that wroks as an oscilloscope using
    soundcard.
    is it safe ? has anyone tried doing it.

    Could you provide a link to the software, or name the software you are
    referring to?

    Can anybody recommend a freeware program for this, that is available
    NOW for Windows XP?
     
  6. ECGK

    ECGK Guest

    Try this link
    http://polly.phys.msu.su/~zeld/oscill.html
     
  7. Guest

    YD & ECGK,

    Thanks for the links, I'll give Oscilloscope/Winscope 2.51 a try.
    -- Mark
     
  8. YD

    YD Guest

  9. YD

    YD Guest

    Oooops, looks like Dazy Web is under maintenance or something. Mark it
    and try later on, it's worth the wait.

    - YD.
     
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