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Stop Time in Transient Analysis

Hadi Hayati

Hi

I have designed an oscillator which its center frequency is 2GHz and there seems to be a problem with its stop time I guess...

When I choose stop time for example 50ns, the oscillator works well and I can see the output waveforms. And if stop time is greater than 50ns (0.5us for example), then all I have at outputs is a straight line... There is no signal.

Anybody can help me out with this?

 

Regards,

Hadi

 

Parents

  • Thank you all

    The problem was all about "step time". Seems we should define step time manually... 

     One more question: Why should we enable conservative in errpreste? I enabled conservative mode and I found out the frequency of output waveform varied slightly. Which one is correct, enable it or not?

    regards

    Hadi

Reply

  • Thank you all

    The problem was all about "step time". Seems we should define step time manually... 

     One more question: Why should we enable conservative in errpreste? I enabled conservative mode and I found out the frequency of output waveform varied slightly. Which one is correct, enable it or not?

    regards

    Hadi

Children
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