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Design >> High-Speed I/O Design >> ISI is caused by cable's group delay distortion and amp attenuation
https://designers-guide.org/forum/YaBB.pl?num=1381221117

Message started by andyseu on Oct 8^th, 2013, 1:31am

Title: ISI is caused by cable's group delay distortion and amp attenuation
Post by andyseu on Oct 8^th, 2013, 1:31am

dear all

As we know, ISI is caused by cable's group delay distortion and amplitude attenuation. the groupdelay distortion represents the channel’s nonlinear phase distortion,which results in post-cursor signal distortions and adds jitters to the received data eyes.The received
data eyes are no longer peaked at bit centres,and the eye diagrams are no longer symmetric.
I have a question , for a given cable ,and we have its eye diagram. how can we kown how much jitter caused by cable's group delay distortion , and how much jitter caused by cable's amplitude attenuation. which way can we use to simulate through cable's s param, tran/ac or some others...

BRS
andyseu