Hi, Alan I am Miguel Rodriguez from youtube. I agree those videos are GREAT. His videos are in terms we ordinary folks can understand. I need some videos on Digital Modulation: costellations, eye diagrams, EVM, etc...If you have the time, and really want to learn the basics of scopes (mainly analog scopes), take a look through the 14 videos in this playlist:
http://www.youtube.com/playlist?list=PL746BF38BC2E068E0
I can't really see the red, is there an option to change the color to blue or green? Is the vertical scale on Volts, mV, or dB?Hi again. I had some time to experiment more with this. That FFT function (Spectrum Analyzer in the QA100 software) is neat.
But before we get to that, this is what I noticed experimentally: My setup has zero on-screen noise issue if I use an alternative motor controller... however, that's not a great option. I need to use the one I was originally using. So I'd like to filter the noise rather than resort to swapping components. So I thought a good idea would be to plot the FFT with the "good" component and again with the "bad" component and then I expected to see a spike or two that I could go filter... but here's the thing... to my untrained eye, it looks nearly identical?!!? I can't see anything special about the "bad" chart (red lines) that aren't on the good one (yellow).
- Steven
ps. wow, after uploading I see the red lines are hard to see sorry about that.
1x Increases the "load" on the circuit you are probing, sometimes drawing more current than something like the input to a video amplifier would, therefore you don't see the exact same signals the video amp does.S
I'm using 1x, not 10x. Why 10x?
If you have the time, and really want to learn the basics of scopes (mainly analog scopes), take a look through the 14 videos in this playlist:
http://www.youtube.com/playlist?list=PL746BF38BC2E068E0
by Jake Hertz
by Jake Hertz
by Duane Benson