bad rise time in eye diagram link to speed

[yefj]

Hello,In the eye diagram bellow the top Wall distortion is caused by transmition line induction voltage drop.
the side wall low slope (big rise time)could be caused by high data rate .
why high data rate causes the slope to decrease thus getting high rise time?
Thanks.

 

[KlausST]

Hi,

High datarate means the edge to edge time becomes smaller.
Thus the time in the eye diagram becomes smaller.
While dv/dt stays constant it "just looks like" in the picture the slope decreases.

At least this is how I interprete your worries.

Klaus