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Comparing 2 analogue signals

Discussion in 'General Electronics Discussion' started by rishinaidusrm, Jun 11, 2011.

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  1. rishinaidusrm

    rishinaidusrm

    3
    0
    Jun 9, 2011
    hi
    Plz help me with a small problem.....
    How do i store an analogue signal and then compare it with another signal
     
  2. poor mystic

    poor mystic

    1,066
    31
    Apr 8, 2011
    Hi Rishinaidusrm (smile)
    please give more details of the signal:
    What is the voltage range of the signal? What is the bandwidth of the signal?
     
  3. daddles

    daddles

    443
    3
    Jun 10, 2011
    Measure it on a modern digital oscilloscope. They also typically have the ability to store reference waveforms and you can compare the two. They also usually have the ability to define a band around the reference waveform so that you can define what's acceptable and what isn't -- this is useful for production testing.
     
  4. poor mystic

    poor mystic

    1,066
    31
    Apr 8, 2011
    Yes, that is a method, but it's not the only method and scopes are not cheap. Let's see what the signal is all about and try to find a low-cost solution without too much compromise if possible.
     
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