LTSPICE: equally spaced timesteps

I cannot find the similar spice directive like ".option interp"(in HSPICE) or "strobeperiod"(in Spectre) in LTSPICE.
In LTPISCE, I do the FFT twice, but lose accuracy during the transient edge.

Is there anyway to set equal timestep in transient simulation?

Thanks

Parents
  • At the beginning, it was to solve the problem that the simulation time of the large matrix was too long in LTSPICE.
    I tried to modify the circuit from the original two path to one path+switch, and expected to use the delay process so that the result1 and result2 can perform point-to-point operations.
    However, during the delay process, the waveform is distorted by the unequally time step.
    At this stage, only the Maximum Timestep can be reduced to reduce the distortion, but it will be accompanied by the problem of increasing the simulation time.
    Thank you for providing these methods. If there are any tips Paintings that can reduce the simulation time are also welcome to share.

Reply
  • At the beginning, it was to solve the problem that the simulation time of the large matrix was too long in LTSPICE.
    I tried to modify the circuit from the original two path to one path+switch, and expected to use the delay process so that the result1 and result2 can perform point-to-point operations.
    However, during the delay process, the waveform is distorted by the unequally time step.
    At this stage, only the Maximum Timestep can be reduced to reduce the distortion, but it will be accompanied by the problem of increasing the simulation time.
    Thank you for providing these methods. If there are any tips Paintings that can reduce the simulation time are also welcome to share.

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