ronw6wo wrote, "If someone can send me the set-up details to show what is possible for a simple square-wave it would be enormously helpful".
I uploaded two examples to the "Temp" folder; one with a 1 kHz square wave and one with a 10 MHz square wave.
I played around a bit with the Maximum Timestep but for these square waves it seems to have very little or no effect, so in the end I just left it alone.
Andy
