Thank you for your interest in our webinar on opening closed eyes. It was presented by Prof. Eric Bogatin.
Missed the webinar? Click the link below to watch the recording.
You can ask your questions on this thread.
Question
1 Speed generally doubles, even if coding needs to change – but the time between versions varies. What drives this? Economic cycles? Tech breakthroughs?
2 Whether cross talk affect the differential signal?
3 In the slide “ISI closes the eye”, is the channel output also pulse shaped?
4 What is the best way to simulate the signal degradation using non ideal connectors? What is the lowest cost software and VNA, to characterize the transmission path and resulting ISI channel output with non ideal interconnects? What is the best way to get a file out of testing, that the Altium spice engine can ingest?
5 How to calculate the Nyquist frequency for PAM4 signaling?
6 How does an encoding scheme like manchester affect the data jitter?
7 20" long test board, what is the signal voltage level? And differential impedance of the race?
8 What is the best way to easily see the eye differences between different stack-up thicknesses, with the same layout? (ideally in Altium simulation environment)
9 Isn’t changing the conductor width also changing the impedance of the trace?
10 Can you recommend a passive circuit topology I can research for equalization? I’m working on a T1L circuit where bi-directional signal might not work with an active filter.
11 Can FFE be practically implemented passively (for example using wilkinsons)? If so, how many iterations can typically be realized before loss becomes impractically large?
12 Can the SerDes Designer import model files from STM32 downloads?
13 The sum of your taps needs to equal 1, don’t they?