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Parametric sweep repeats runs for a value instead of correctly advancing sweep

syen

I'm trying to run parametric sweeps in ADE L (ic 6.1.5). The issue I'm running into is that occasionally (and seemingly at random) it will latch onto a value of the swept parameter and not change it for the rest of the simulation runs.

For example, if I'm trying to simulate the frequency response of an LC resonator and I'm sweeping the capacitance, let's say 1 to 5 pF in 1pF steps, then I expect to see ten different traces corresponding to 1pF, 2pF, 3pF, 4pF, 5pF (their peak frequencies will change, for example).

However, when this repeating issue occurs, I'll get traces corresponding to (for example) 1pF, 2pF, 3pF, 3pF, 3pF. That is, it seems to have used the 3pF value when simulating the 4pF and 5pF cases.

What concerns me is that it labels the last two traces as 4pF and 5pF, even though the trace is clearly wrong. The concern being that for more complicated/less intuitive circuits, I might be unable to tell whether it's a lack of sensitivity to the parameter, or this repeating problem.
What makes this problem worse is that it still spends the full time running the "repeated" simulations, thus wasting time.

Is there a way to avoid this issue, apart from re-running the sweep?

  • I have seen this behaviour before - and as far as I know it is fixed in a later version. Can you try using something more recent (for example the latest hotfix of IC616?)

    Kind Regards,

    Andrew.

  • Hi Andrew, thanks for the the suggestion and for confirming the problem. So far ic-6.16 seems to work; I haven't run into the problem yet.

  • Hi Andrew, thanks again for the tip. But now I'm running into a somewhat different problem in ic-6.16.

    When I run a parametric sweep, and then run another simulation (plotting in New Window or Append mode), it seems that I cannot copy the Parametric Sweep's traces over. So, when I select the parametric sweep's trace > Copy To New Window, it creates a blank window without a trace. When I try to copy the trace to paste elsewhere, it doesn't paste anything. The workaround is to export the traces and plot them in Matlab as I please, but that seems to be a step backward in terms of user interface.

    Is there a way to preserve parametric sweep traces (so that they're copyable) without having to export them every time?

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