How to Analyze Vertical Noise - Exposing Signal Integrity Myths - E2
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- čas přidán 6. 05. 2019
- Be sure your oscilloscope doesn’t produce too much noise!
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In this episode of Exposing Signal Integrity Myths, you will learn about vertical noise and what you can do to be sure it isn’t affecting your measurements. Even though vertical noise is technically not fixable, it is possible to measure around it.
Understanding what noise is coming from your device versus what is coming from the oscilloscope is critical if you want a fully functional device. Vertical noise is often overlooked, but it can cause significant problems like amplitude measurement errors, waveform reconstruction uncertainty, timing errors and jitter, or undesirably “fat” waveforms.
By the end of this episode, you will understand what it is that causes vertical noise, how you can check the noise floor of an oscilloscope, and how you can measure around it.
Tune in for future Exposing Signal Integrity Myths episodes covering more common misconceptions around signal integrity.
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The mixed signal oscilloscope we used:
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(The Keysight Infiniium S-Series Oscilloscope)
The S-Series allows you to see the truest representation of your signal with the industry’s best signal integrity: 10-bit ADC, low noise front end, superior time base, signal processing in hardware, and responsive deep memory.
Exposing Signal Integrity Myths is hosted by Erin East. The video series dives into various misconceptions around oscilloscope signal integrity. In watching this series, you will learn about the important considerations for determining an oscilloscope’s true measurement quality. Understanding the system as a whole will give you visibility into the true performance of your device.
#NoiseFloor #SignalIntegrity #ExposingSignalIntegrityMyths #Oscilloscope #HowTo #Engineering #ElectricalEngineering #Tutorial #Basics #Electronics #ElectricalEngineers #scopespecs #oscilloscopespecs #scopespecifiations #oscilloscopespecification - Věda a technologie
Get the free signal integrity eBook here: bit.ly/eBOOK_SigIntegrity
Where is the link for the free Oscilloscope? !!!
Noise is just the universe getting angry when you try to look at things too closely.
Is that why my girlfriend is making noise for all the time?
Sadly, I can't get around noise at all, because I didn't win any Oscilloscope in the Wave and my China Scope has noise basically as a built in feature 😉
Just shows how the chinese see an opening in the market and fill it !
I like it when she says "Now that you know about noise..." . Nice!
This was very informative and educational. Thank you.
my god that was more information in 8 minutes than a 90 minute lecture
Hello, Erin
Very professional your tutorials.
Erin is so cool! Yeah Keysight too
I've used different scopes and you're right -- it is a hassle to measure around the vertical noise... Grrrr! as a firmware developer I occasionally work with the electronics at this level so the next time I'm facing this difficulty I'll try these tips to improve my measurements-- thanks for posting!
Looking for interesting tech videos - found interesting tech videos and new crush, too much of a good thing :D
Changing the probe to x1 instead of x10 reduces its usable bandwidth significantly, this may or may not be an issue depending upon what you are doing, people need to check their probes specs to know how that will effect their measurements.
gimme that keysight !
Hello, could you make a video about floor noise (in whiteboard maybe) about how affects "the number of
quantization levels that are needed to display at that offset"?.. it has to deal and with the trriger level maybe which is changed when the waveform is out of the center? Thanks for all the nice presented tutorials.
Great video. Sibilance on her vocal recording is kicking, though. Otherwise, great work, Erin!
Hello, I love the video, gimme da scope
Would using 1x rather than 10x add more load to the circuit? I guess it's a trade off at that point? (Another great video with a lot of TIL for me!)
For repetitive signals a good way to eliminate much of the internal oscilloscope noise is to use the average sample mode, results in very sharp traces. But be careful if you average over too many samples and the input signal is not repetitive, then the signal doesn't look like what you see.
Some specific noise from probe and device under test can be eliminated by turning off unneeded equipment when sensitive measurements are taken.. ;)
What's about noise from oscilloscope going back to probe and to the test device?
Example, when testing transistor power amplifiers output cascade driver op.amp. with probe, especially non-inverting pin (but depends from schematic), in some cases, some oscilloscopes generates parasitic noises through probe, but amplifier doing his job and that noise goes to the speaker (very loud, because volume control in this situation is bypassed)..
Where is this week's video ? :-( How about WTRF?
shouldn't you say signal-to-noise ratio decreases @ 3:45 ?? cause there's more noise than before
Yep! Good catch. The noise goes up, the SNR goes down.
Wow
Don't forget that you lose bandwidth when you turn your probe to times one.
Actually, the noise to signal ratio, N/S, goes up when you introduce more components (and noise) to your circuit measurements. The signal to noise ratio, S/N, goes DOWN.
Didn't she mean to say "down" instead of "up"? 3:46
Eletroboom were are you
Hand crank to start an electronic generator (Battery bank), that then powers an electric motors, that then charges it back and keeps the battery bank charged, keeping the cycle going with pleanty of extra power for other uses
Have you even bothered trying your hand at free energy, instead of just dismissing it because it's the modern and accepted concencous?
Please i wanna oscilloscope
//// no fourier,,,, detective,,,, no no
If the scope input is shorted, generally the FFT won't reveal any interference unless it's very strong.