A simple way to find the steady state is long-time transient simulationrun, but for high-Q-circuits his is often not practicable. Additionally,a criterion has to be determined in order to be sure of reachingthe steady state. This problems of the transient analysis of high-Q-circuitshave already been addressed in the PSPICE-Manual. These circuitsrequire setting up the time step manually because they are extremelysensitive to inaccuracies in integrating the differential equationnear resonance. To overcome this extremely long simulation time,exact initial values must be calculated before running the transientanalysis. The method of finding these values will be explained usinga simple crystal oscillator as an example