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Simulators >> AMS Simulators >> Ultrasim and Hiearchy Editor
https://designers-guide.org/forum/YaBB.pl?num=1268068450

Message started by fz2101 on Mar 8^th, 2010, 9:14am

Title: Ultrasim and Hiearchy Editor
Post by fz2101 on Mar 8^th, 2010, 9:14am

I'm simulating an oscillator circuit with Ultrasim, when I set what I believe to be the default accuracy in Analog Design Environment by going through Simulations -> Options -> Analog and change the Simulation Mode from the default Mixed Signal (MS, 5) to Analog (A,5), the oscillator oscillates.

However, if I change the sim_mode and speed in Config to the same exact settings, i.e. "a" and "5", the oscillator does not oscillate. In fact, changing the sim_mode and speed in hiearchy editor seems to have no impact on the accuracy of the simulation. I used the Ultrasim template when I created the Config view.

Title: Re: Ultrasim and Hiearchy Editor
Post by Andrew Beckett on Mar 8^th, 2010, 2:15pm

Go to Simulation->Options->Analog in ADE (with UltraSim as the simulator) and check "Allow usim_opt on HED".

Regards,

Andrew.