Despite of unclarities with the test setup, the lines must terminated at one end, otherwise you get multiple reflections.Isn't one line shorted and the other open
I admit that the behavior of coupled lines isn't obvious at first sight, but the answer to this particular question seems self-evident. You think about the expectable steady state response after all transients died away.Could somebody explain why the far end of the line 1 is high if the transition y from 0V to 1V ?
Don't agree. Without termination, the waveform would show multiple reflections. You can try in a simulation. I rather guess that the author has "abstracted" from termination problem to simplify the discusion at this point.Later in the book the author speak about cases when the differential pair lines are terminated, which confirm that the lines in figure 11-21 are not terminated.
Specifically, it changes for asymmetrical patterns due to different propagation speed of odd and even waves. The differential voltage waveform V1-V2 does not change.In general, any arbitrary
voltage pattern we launch into a pair of transmission
lines will change as it propagates down the line.