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You are here: Home » Blog

Ground bounce demonstration board

December 9, 2018 by Rolf Ostergaard

Here is a good ground bounce demonstration. If you have been to one of the signal integrity classes, you will know about ground bounce. And VCC bounce. It’s one of these bad things that really can ruin a project.

This group of students is lucky enough to have Eric Bogatin as their instructor, and obviously, they go through ground bounce as well. They even build a board showing that effect. Some of the students got inspired to write a small piece for the Signal Integrity journal: “We Live in White Space“. A fast and easy read.

Ground bounce demonstration waveforms

When we do the local engineering university (DTU, Danish Technical University outside Copenhagen) summer course on signal integrity, there is a similar lab exercise. This includes both a board layout by the students and some measurements on a lab board that can demonstrate this effect. This is the lab board we use:

lab exercise board

We should maybe include a number of eval boards from various chip vendors, as the bigger (BGA) devices are too much to put on a student board in the class setting – yet may still have a significant ground bounce or VCC bounce.

What bigger device have you used recently with a significant ground bounce that we can use for an even better ground bounce demonstration?

Filed Under: Ground/Vcc Bounce Tagged With: Eric Bogatin, Ground bounce, SSN, University, Vcc bounce

Copenhagen: Serious FPGA development starts here – Oct 3, 2017

August 27, 2017 by Rolf Ostergaard

We have Espen back in Copenhagen with the best ever FPGA verification course. Complete with best practice for both development and verification this course is a must if you are serious about FPGA development. Please use promo code VCPH17Q3-45 for €100 discount. More participants from the same company can get an even better discount. Read more… Read more

Filed Under: Announcements

Confirmed: Signal Integrity w/ Hands-On Aug 1-3 in London

July 18, 2017 by Rolf Ostergaard

Just confirmed to run: the next 3-day signal integrity course on Aug 1-3, 2017 in Ringwood just outside London organized by our friends at Doulos. There are some extra seats, so please talk to Sandra from Doulos ASAP if you want a seat (phone: +44 1425 517625). Each seat is only £1895 – and if you… Read more

Filed Under: Announcements Tagged With: Doulos, SI

Last call: Signal Integrity w/ Hands-On in August

July 8, 2017 by Rolf Ostergaard

Doulos is organizing another 3-day signal integrity course on Aug 1-3, 2017 in Ringwood just outside London. Now is the time if you want to join in – the gate closes Jul 15, so get in touch with Doulos before that date. A great time of the year to spend an extra day or two… Read more

Filed Under: Announcements Tagged With: Doulos, SI

SI Course in Munich Feb 20-22

January 24, 2017 by Rolf Ostergaard

The 3-day Signal Integrity with Hands On course on Feb 20-22 in Munich is confirmed and will run for sure. Get signed up asap 🙂 The course is organized by Doulos – so they are the contact point for signups. See you at Hochbräuhaus 🙂… Read more

Filed Under: Announcements

Best read about ground in 2017 (so far)

January 8, 2017 by Rolf Ostergaard

We all use “ground”… but what is it? Apparently our good friend Lee Ritchey spent his Christmas writing an article about just ground. This is such an important topic as there is so much confusion over this simple concept – yet we all use it all the time. This is no doubt the best article… Read more

Filed Under: Read more Tagged With: Ground

Call for Projects

June 25, 2016 by Rolf Ostergaard

This summer we passed 30 new signal integrity students at the 3 week summer course at Danish Technical University (DTU). This is more than twice as many as the previous years. Why? Well, the course is now on the official list of recommended courses for EE’s. I would add another recommendation: Have a real good… Read more

Filed Under: Announcements Tagged With: DTU

SI Week 2016 in Copenhagen was a Success

May 30, 2016 by Rolf Ostergaard

Last week was dedicated to signal integrity in Copenhagen: SI Week 2016. We had some very good questions and discussions this year during the 3 courses on Signal Integrity, Simulation and Stackup Design. Lee Ritchey was in good shape and kept sharing knowledge and experience all of Mon/Tue/Wed and Friday. Thursday was a full day of… Read more

Filed Under: Announcements Tagged With: Copenhagen, Lee Ritchey, SI Week

SI Week is ON for sure, and so is Ringwood

April 14, 2016 by Rolf Ostergaard

On rare occasions we have to cancel an announced course due to lack of participants. This is the case with the scheduled Munich course in Signal Integrity with Hands-On Simulation next week. Sad, but not all bad. We have the exact same course running in Ringwood outside London the following week on Apr 25-27. Go… Read more

Filed Under: Announcements Tagged With: Copenhagen, Doulos, Ringwood, SI Week

31445 Signal Integrity in High-Speed Electronics Jun 14

March 30, 2016 by Rolf Ostergaard

Yes – we are at it again. The Danish Technical University is running the DTU signal integrity course for the third time this summer. An intense 3-week course combining practical lab work, simulation and theory. I provide a small bit of the training along with the staff at the university. Always a great experience, so… Read more

Filed Under: Announcements Tagged With: DTU, SI, University

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