![]() By reducing the TMAX parameter, you are informing Multisim to expect high speed signals and to take smaller timesteps. If you have a long simulation with lots of high speed signals, the default TMAX would be too large and that is what is happening. This explains the Timestep too small message that you are getting the timestep that Multisim has tried is too small to seem reasonable and Multisim informs you of the reason why it is giving up. ![]() It will keep trying smaller timesteps until it reaches some fraction of TMAX before giving up. In the event that Multisim can't solve for the next time step, it will choose a smaller timestep. If you don't specify a maximum timestep (TMAX), Multisim will automatically choose a TMAX based on the length of your transient simulation (TSTOP).
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