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| How to reduce noise on digital oscilloscope? |
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| Aldo22:
--- Quote from: indman on October 22, 2024, 04:17:10 pm --- --- Quote from: Kean on October 22, 2024, 04:14:30 pm ---The fact the trigger level is above the signal could maybe mean this trace was captured with different settings than shown? --- End quote --- Is it also likely that the user himself shifted the signal higher or lower after the capture? ;) --- End quote --- But relative to the “1” arrow (not the vertical center of the screen)? My Hantek keeps the arrow in the center of the wave form, even if I move it vertically after the capture. |
| indman:
--- Quote from: Aldo22 on October 22, 2024, 04:29:09 pm ---But relative to the “1” arrow (not the vertical center of the screen)? My Hantek keeps the arrow in the center of the wave form, even if I move it vertically after the capture. --- End quote --- The picture of the screen was taken at an angle to the display, so the proportions and size may be visually distorted. The photo shows that the test signal magnitude is approximately 3Vpp. The level of the arrow is labeled CH1/1.44V, which corresponds roughly to the middle of the signal. |
| Aldo22:
--- Quote from: indman on October 22, 2024, 04:37:02 pm ---The picture of the screen was taken at an angle to the display, so the proportions and size may be visually distorted. The photo shows that the test signal magnitude is approximately 3Vpp. The level of the arrow is labeled CH1/1.44V, which corresponds roughly to the middle of the signal. --- End quote --- No, it's all on one level. This is not an optical illusion, you have the graticule to compare. You can clearly see that there is about 1V above the arrow and about 2V below the arrow. I have never seen that in AC coupling. |
| IC_Toaster:
--- Quote from: Aldo22 on October 22, 2024, 04:45:59 pm --- --- Quote from: indman on October 22, 2024, 04:37:02 pm ---The picture of the screen was taken at an angle to the display, so the proportions and size may be visually distorted. The photo shows that the test signal magnitude is approximately 3Vpp. The level of the arrow is labeled CH1/1.44V, which corresponds roughly to the middle of the signal. --- End quote --- No, it's all on one level. This is not an optical illusion, you have the graticule to compare. You can clearly see that there is about 1V above the arrow and about 2V below the arrow. I have never seen that in AC coupling. --- End quote --- I agree with you and tautech. I find it strange. |
| hpw:
--- Quote from: sonielkraf on October 22, 2024, 12:00:51 am ---Hello everyone, I have problem with my digital oscilloscope, the signal on testing like noise, how to reduce them? --- End quote --- Using averaging... as a normal setting as on old 8bit LeCroy 20Gs WM & SDA |
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