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Originally Posted by billbo911
OK, I'm not following. What is the 2.5vdc offset you are speaking of?
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The square wave you referred to
Quote:
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Originally Posted by billbo911
I have to assume you are injecting a 5vp-p signal running from +2.5 to - 2.5 vdc. If so, I would say you have a -2.5vdc off set.
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does not have a DC offset. You can get technical and define the DC offset as the constant term in the Fourier series below or just look at the waveform generator and check how far you got the "DC Offset" dial from zero
Anyway, you are really using a 5V pulse train and my initial concerns were pointless. Which leaves me without ideas of what is going on.
Could you possibly hook the waveform generator to an optoisolator just to make sure there's nothing else interfering?