I love how you pause the experts talk for a simpler explanation and then we go back right in to core content :-)

Your questions aren't dumb; they help us all to understand what's really going on. Great presentation!

Your videos should be as long as they need to be, so if your have important material/information on the topic, I don't mind long videos at all. this is how someone can learn.

Thank you Eric for a great call and thanks to Martin for creating the subtitles. If you like, leave your feedback for Eric and Martin here, so they know you found it useful. Thank you for watching. Enjoy!

This is one of the most amazing videos ever, on anything.

All the contents by Eric Borgatin through roberts channel is priceless...really I am new to this field and am enjoying it as every concept is being visualised in detail and application of undergraduate field theory👍👍....

I’m only halfway through watching this video, and understanding crosstalk, reflections, along with their nature and relationship is a university level science doctorate all on its own… kudos to Robert, Erik, and Rick for venturing to provide this information to everyone! Robert, when you were embarrassed at the beginning of the video over a signal characteristic, don’t be. You should keep that type of information in always… we are human. Understanding this information is different than retaining it. I will likely watch this video 10 times just to properly understand it. Retaining the information for the purposes of designing a new circuit is a whole other can of worms! You are doing a great service to those like yourself/myself with a desire to learn Robert!

Awesome. I just realized that i knew nothing. Watching your videos with Mr. Eric and learnt alot. Thank you

Thank you so much for the video, great contribution for engineering all over the world. On the minute 21:48 Eric comments about a rule number 9, I wondering what are the others rules?

Thanks for this super informative video.

You channel is fantastic thank you

Very good content and clear explanation. Thanks a lot

Both of you are patient with the details. Thanks for the video.

Thank you very much Robert!!! Amazing video!! Just as amazing as the previous one!! Eric is a great engineer and teacher!! We greatly appreciate his contribution and yours as well of course.

Such a GEM

Thanks Eric for your clean explanantion and thanks robert for your efforts. Your videos are very helpful for building my career....

I don't have much of a point in this rant but here it is: This video will also dispell the weird Veritasium video challenging wether voltage/current/energy/electrcity travels in a wire. Is it electrons propagating in wire or transmission at light speed in all directions. To demo this, he proposed laying a wire 1km long flatly and travelling away 499.5m , the making a 90 degree turn, 1m wire more, then another 90 deg. turn heading back 499.5m keeping a constant 1m distance from outgoing wire. At starting point of 1km wire was a battery and a 1 pol switch hooked up. I don't remember if the negative side of battery was connected to another 1km wire doing a loop in reverse direction or just a 1m stump to an light source. The challenge was to predict how long time it would take before it would light up with the light source being 1m away from battery/switch. The light source had the property of lighting up at any current present. It feels like Veritasium makes the case of "spooky electricity", it's not about electrons pushing each other in a wire but "energy" thru air lights up the target at the speed of light travelling directly, jumping the 1m gap. It is sort of a silly case, because it's basically seen to us as "just crosstalk"... or seen as an antenna transmission. The only "challenge" in Veritasium video was to "correctly" focus (guess) on the "magic" light source lighting up on the minute crosstalk energy and ignore all other minute details. To me (the Veritasium vid) it felt like a cheesy video, trying to mystify rather than clearing up different conceptions of reality/theory/fantasy because; If you are going to make or break the function based on "crosstalk", "magic light source" and asking for a specific time it takes; then anyone sufficiently petty will say question was actually impossible to answer at all because of missing information/test conditions like gravity/time dilation, dielectric properties, thickness of wire and the actual distance between the long runs -is the "1m apart" the c-c wire distance or between the closest wire strands... Oh, if it's an actual wire that means strands, how many? How thick each strand? what twist rate? etc. I'm not sure why I thought about veritasium video seeing this video but I like this video better.

Hi Robert, I have read few white papers by Eric but i could not visualize and understand it. But these videos make it super cool and clear. Thank you very much Robert and Eric for making me feel like awe!

thank you for this video again. what a nice follow-up of previous one :-)

Really great video Robert, thank you very much!

Robert, Eric is your best guest. Invite him more often, please) And of course, you are great too)

Thank you soo much for this amazing explanation. Your videos are very useful.

Thank you very much Robert with such an excellent content in continuation.. Both of your contributions are priceless to the community. Please come with more simulation oriented videos like this with the legend Eric Bogatin.

Thanks Robert for bringing this video series about Crosstalk with Eric Bogatin! Really enjoyed watching these videos.

I love your videos Robert!!! I have told 20+ people to your channel and each person wished they found you earlier!!! Keep it up!!

thank you very much . it was perfect and prfect and perfect

I am getting many new things to learn through your video. Thanks a lot

Very good content and clear explanation. Thanks from Brazil

Amazing! It reminded me all my Physics classes from high school where we were learning about these so basic things about waves, like propagation, reflections. And here is the beautiful presentation of these basics laws of Physics. Robert, Eric - thank you so much!

Great video... I was learning about the energy flow in a PCB. This helps a lot to someone who r trying to know exactly what is happening in PCB. You should continue this.

Great 👌👍👍

I learned a lot from your videos on cross-talk, Like you guys said , We all are learning from mistakes Really, Just saying Thanks will not sufficient for your videos , sharing your knowledge with all is such a great thing I always highly recommend this channel to my friends

This is super useful! Thx for sharing! If there’s some chunkable clips, that would be better

Hi Robert, when designing a flexible PCB, it is important in some cases to add a stiffener (e.g. FR4) beneath some components to avoid overbending the pads and components. Have you done any videos on how to add FR4 stiffeners to specific locations? Thank you

At 12:20, Eric adds a 50 Ohm terminating resistor connected to ground. What if you are just trying to prevent crosstalk on the output of a microcontroller? That would kill the microcontroller pin.

I really like your videos with Eric, specifically because it helps me understand deeper books related to SI/PI, it wrote. I'm curious regarding hyperlynx, is it free (yes I'm a dreamer). Keep teaching us guys, I'm feeling clever and clever thanks to you

It looks like a PCB field solver is becoming a vital part of professional PCB design software. It doesn't seem possible to properly take into account all of these crosstalk, impedance, etc. effects without a simulator. It probably costs a lot, restricting the possibilities to wealthy designers / big companies.

These videos should be watched day and night!!! Precious, precious videos for the engineer community. Now can we move forward into RF areas? XD.

Awesome. I would like to see the effects of higher output impedance. IE putting a higher value resistor on the output pin of an IC to slow the edge and swamp the trace . Like a trace going from Cmos IC to Cmos IC.

I wonder what is the way to protect the paths of equipment like photodiode?

This video was super informative and very interesting. I had one question regarding the cross talk on the victim trace. I see on the simulation and even on the actual measurements, the cross talk voltage in the victim trace is generated like a few time scales before actually the signal rises in the aggressor. How does this happen? How does the victim trace know even before the signal has arrived.

Omg we waste 4 years in class I love this so interesting

Thanks but I think that simulation tools are still very expensive. A test board or simulation using traces with bends and compensating jog outs would be interesting. Does Eric have a similar test board to test differential pairs - maybe with different lengths to simulate a phase error - how does this affect signal integrity?

Hi Robert Feranec, how near end crosstalk gets high even before the rising edge of the driver signal do it?

To me that looks a lot like a directional coupler design, it even behaves like one

Eric says.... if u understand the fundamental principles... But, duz Eric understand the fundamental principles of what is electricity along a wire? (Nope)(nobody here duz). I notice that in this youtube & in every other similar youtube that i have watched recently there is no mention of electrons (probly a good thing).

But you didn't compare trace spacing! :'(

I don't know how to put it nicely, but here's my problem: it _appears_ as though you can't tell what to expect at the far end of a victim line in a cross-talk scenario. Yet you sell PCB design courses online, some of which claim to teach buyers how to design high-speed boards. In another one of your other videos you try to simulate a split in a plane then ask viewers to help you make sense of the results. I don't get it. Deep down I hope that this is just a pedagogical vehicle, an act you put on to make all your viewers feel comfortable, involved and at ease. If this is the case, you're one hell of an actor and you have your ego under very close control, which is to be applauded.... but if that is not the case, well, then your courses may need a serious overhaul.

Honestly these videos are a bit too long for me. Not that they aren't good. I would like to see some design rules to make a design more efficient on time and space also improve performance. Perhaps 10-20min videos.