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| Measuring jitter with an oscilloscope |
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| drummerdimitri:
I'd like to make some jitter measurements on an audio signal from my headphone amplifier with my oscilloscope (Rigol DS1054Z (hacked)). Is this possible, if so how would you go about doing it? |
| David Hess:
Any oscilloscope can do that but what kind of jitter do you want to measure? |
| Rerouter:
Well to begin confirming you have a jitter issue, a simple mask test will show most of your issues, output a fixed sine wave towards the upper end of your ampliers capability, e.g. 10KHz, and set up a mask that is quite narrow with 1 full cycle occupying the screen, any deviation in timing should then be flagged by the mask. |
| Bud:
To measure jitter with an oscilloscope you need to know jitter characteristic of the oscilloscope, otherwise you will not know if you observe jitter of the signal or the oscilloscope. Knowing how bad rigol is about their master clock, chances are such measurements will make no sence on a rigol. |
| TheNewLab:
--- Quote from: Bud on January 01, 2019, 06:01:39 am ---To measure jitters with an oscilloscope you need to know jitters characteristic of the oscilloscope, otherwise you will not know if you observe jitters of the signal or the oscilloscope. Knowing how bad Rigol is about their master clock, chances are such measurements will make no sense on a Rigol. --- End quote --- This is what I would be concerned about. In my case..I suspect that I have so much energy flying about on my lab bench, no matter how much I calibrate my scopes. there still is not a steady signal. I just do not know how to isolate all of it, except the basics like AC power line |
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