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Hi all - quick bedtime question - I need to plot the group delay of a circuit multiplied by the frequency.? Too tired to work out how to do it, nothing I've tried has worked.? Is there a natty little trick in the plot window?? Thanks -- K

Sorry - missed your bedtime. But if you still need the answer today, read on.

You can change the right hand axis (in .AC analysis) to display group delay instead of phase by: Right-click > Representation = Group Delay.

Unfortunately, you can't plot gd(V(out)) as you can - say ph(V(out)). Neither can you plot d(ph(V(out))) - an irritating little box pops up telling you: "Ph() differentiation is not supported. Use the waveform viewer group delay display feature."

There you have it.

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Regards,
Tony