Title: How to achieve proper grounding Topics covered: Signal integrity cross talk EMI digital/ananlog topics layer stackups Best video I've ever seen. Thanks Altium for beautiful effort of bringing industry experts to an open platform. Thanks alot
I've been a designer since the 80s. I have been working in Altium since its release. (A mixed and power electronics designer). I haven’t seen anything more exciting, I was stuck for two hours. Lots of adrenaline. Detectives are resting! Thank you for the material. Much is familiar and has long been intuitively understood. I developed some of my own triks and solved problems differently. But here is a wonderful systematization of the life experience of a wonderful designer on the way from a teapot to a pro!! I understand it and remember every one of my mistakes and every crazy PCB. At some point I realized that the EMC laboratory should be behind my back, and not from someone for money. I assembled it, and the work went much faster. Thank you so much again!
Only 30 minutes in and the way hes describing these topics bring so much more understanding to how circuits work than anything in my electrical engineering degree. Thank you so much Rick!!!
Mind-blowing content. I am just starting out in Hardware design professionally. This is what I have been looking for, 55 years of experience eloquently delivered. Thank you, Rick
How the hell you gonna drop these mind bombs on me for 2 hours straight. This video just now was a pivotal point in my understanding of electronics. This is the kind of thing the internet was made for.
Wow, this was a complete paradigm change in my thinking, it instantly gave me an entirely different understanding of signal (noise) propagation on circuit boards! I can’t recall the last time I had such a sudden burst of comprehension, it was an amazing experience. *Huge* kudos and thanks for the presentation!!
I'm on my second viewing and this video is still stunning. I imagine a third and fourth viewing to be in my future, there's just so much to take in. Thank-you Rick Hartley and Altium.
This is like listening to Grand Master Oogway. I was amazed, when he revealed, that energy travels in dialectric, so much great examples, for free!? Man, I love this.
I learned more about good PCB design in these 2,5 hours then in all the years at school! Yes, it is for free, but all of this knowledge is priceless and very valuable!
This really is a superb, and enlightening presentation. ONE THOUSAND THANKS. Rare and precious material that changed my view on electronics and my routing jobs.
I attended one of Rick’s 2 day seminars a few years ago and this was a great refresher. THANK YOU Dan for making it so simple to understand. I’m still debating with other engineers who insist on talking about where the current flows without admitting it’s where the fields travel. It’s the field propagating that creates the current flow in the copper. I’m going to make my engineers watch this to try to get them to understand.
I was fortunate to have taken a course early in my career back in the late 80s taught by Prof. Tom Van Doren on Grounding and Shielding. He covers most of these same concepts, but in more detail given that it was a two-day course rather than two hours. Very useful for control engineering and instrumentation as well as PCB design.
The best presentation I've seen in many many years. Eyeopening big time! Thank you for your insights. Also great prestation skills, never lost contact during the presentation. Excellent and well done!
Thanks Altium and Rick. This is one of the best PCB tutorials I've seen. Only wish I'd seen it years ago. For me it brought together all those little tips I've been told since the start of my career but actually explained why - with some great tips that I hadn't been told as well.
I'm a dumb mechanical guy who dabbles with electronics as a hobby and this was so enlightening! I love it when experts explain the fundamentals clearly!
7:00 the question of should you attach the cable shield to chassis or to circuit ground, for which Rick's answer is always to the chassis (and for good reasons). That's all very well, so long as this cable is not designed to carry the signal return (slash ground reference voltage) on the shield, like several standards for audio cables do, for example. In that situation, you don't want the shield conductor to connect the chassis of two pieces of equipment that are plugged into mains, where their chassis are individually connected to the ground pin of two different wall outlets, thus introducing a ground loop, and a hum voltage that adds to the audio signal being communicated. There's a reason for insulated RCA sockets, insulated BNC sockets and so on.
This is absolutely brilliant information. I've only recently began studying electronic engineering during my master's, and this is brilliant supplementary info! Thank you so much Rick!
This video elicited a profound transformation in my cognitive framework, instigating an immediate and comprehensive shift in my understanding of signal (noise) propagation within the realm of circuit boards. Thank you!
Thank you very much. Although I already applied some of the practical rules exposed here, this explanation of why we should apply them was really eye opening. The most surprising realisation is that bad effects start to happen at frequencies as low as just few kHz. Again many thanks !!
Energy transmitted in dielectric! That's the priceless part - many people talk about impedance and return currents, but that's the perfect and extremely simple explanation of _why_! Thanks!
Meanwhile I say this too my principle digital engineer supervisor and he said it is nonsense. And also asked my RF/Microwave design engineer coworker and they said similar thing. I don't who to believe anymore....
@@TheVideoVolcano it's not a matter of faith - physics doesn't care about people's opinions :) Just ask yourself a question: how EM wave propagates here (hint: it's explained in the video but requires some knowledge to understand). If you would blindly trust the video without understanding what is happening, how will you apply it for actual PCB design anyway?
@@TheVideoVolcano They are wrong and I can prove it. Ask them How does the Electricity from the Power station get to their Home? The Cables are the Wave Guide, as the EM fields are OUTSIDE the wires travel 100's of Km/Miles - this is true because you move a wire next to the Power cable and get the EM energy to move into your wire. The Transmission Line System Proves this to accurate - have you seen the Veritasium videos on How Electricity Actually works? It's a Study of Electrodynamics. A Capacitor is a break in the circuit, nothing should cross it, but it does, why EM fields travelling though the wave guide. How does RF work? EM fields travelling though space/air meet up with a wave guide, called an antenna and we receive the signals. No Electron from the Power Plant makes it to your Home, All the Power is in the EM fields. Voltage and Amps are Measurements of the EM field. Did you watch the Play list?
Turns out that when I design a PCB that I'm doing the right thing naturally, to me it's common sense but I still learned a couple things from this video that I can improve on in the future so many thanks for taking the time to make this video and sharing it here on RU-vid. If you're researching electrical engineering and go into the specifics like this topic in this video it's very hard to find anything coming close to the quality and the wealth of accurate and reliable information like we get with this video, we need more of this online in the public space because there's too many people talking about these things online who don't have a clue of what's really going on and if you're doing research on a specific part in EE that you're not familiar with and you listen to the wrong people you'll get misinformed and it's even harder for someone to recognize being wrong and have to learn it all over again to get rid of the misinformation planted in your head by all those idiots thinking that they know it all which is costing too much time that you never get back, it happened to me several times so I'm talking from my own experience. Again many thanks for putting this online guys and I wish you all the best, Ricardo Penders.
Great presentation. At 32:00 there is an interesting effect not discussed. At very low frequencies the Z0 goes up (nonlinearly) due to finite R and G as frequency approaches zero; a low frequency dispersion. You can see this effect on some RF VNA that go down to 300 kHz or lower.
Genious video which can absolutely change the vision of the board design physics for many HW engineers. It's a pity that there is a big lag of video relatively to sound, and Altium hasn't fixed it. A little bit hard to follow.
Awesome talk, well worth it. Thank you very much! I wish there was a way for Altium to check this concepts in the DRC. Like have at least a warning when you route a signal between power planes, or when you split grounds, etc. Maybe this feature is somehow implemented and I'm not aware of it?
Very interesting and valuable. I wonder if there is such a thing as “field-oriented or field-centered electronic design” that starts at fields and folds the design around that.
I think the mind required to design circuits that way would be inconceivably smart. It's taken me 30 years to understand how electricity flows through a wire !! Lol
I think the drain of a sink analogy around 9:55 works quite well. You just have to think of a drain with issues: clogged up, poorly vented and with an incorrect slope.
👍👍👍 GREAT VIDEO!!!! I VERY rarely comment on videos. But I had to on this one. Great content rarely found anywhere else. Clear and concise presentation. More videos from Rick!!!!!!!
This seems similar to the "double slit" paradox. Electricity "takes the path of least resistance", but in order to take that path, it must already know the path
Gosh, I've gone through tons of tutorials about spit grounds, crosstalks, and EMI-related issues, but NONE of them is clear, most are just based on rubbish and usually incorrect experience. As a former physics student and current Ph.D. student working in mechatronics, this is the tutorial I am looking for, theory and reality perfectly combined! I wish I'd seen this video a few years earlier, could saved me a ton of time debugging stuff.
I take it he meant that if traces don't have their return path directly in a ground plane below, you should route them like this: Signal - GND - Signal | Signal - GND - Signal ..... So every signal line has a ground return path directly ajacent.
Thanks Rick. now i understand some of the problems there are in the model train world i have seen with marklin digital. I work with Eagle cadsoftware 9.6.2 - now and design pcb for my marklin digital layout. Best regards, Henrik Vilhelmsen - Dannemark.
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