Time probing limit

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Hello all,

I have a model in RF, Time explicit. There is a source sending a modulated gaussain pulse signal and a probe positioned away from the source to receive the signal. I am trying to record the whole time signal from to=0 to to=tmax. However, comsol seems to remove the time from 0 onward as the simulation continues so when the simulation is complete I have the probe signal from to = x>0 to=tmax. I tried to set the output time to range(0,1e-11,tmax) yet no solution. When i make the mesh corser, the whole time is recorded but with finer mesh the problem raises. I need a finer mesh to have feasible data. How to solve it ?

Thank you



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