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https://designers-guide.org/forum/YaBB.pl Simulators >> Circuit Simulators >> transient noise simulation https://designers-guide.org/forum/YaBB.pl?num=1319530250 Message started by raja.cedt on Oct 25th, 2011, 1:10am |
Title: transient noise simulation Post by raja.cedt on Oct 25th, 2011, 1:10am hello all, i want to verify one of my serial link TX with transient noise, so for that i want to use transient noise to get proper estimation of DJ. So in the transient noise options what is the meaning of a. Noise seed b. noise fmax c.noise scale d.noise fmin e. noise tmin Thanks, raj. |
Title: Re: transient noise simulation Post by sheldon on Oct 25th, 2011, 6:18am Raja, No you don't need a transient noise simulation. A transient simulation will give you the deterministic jitter. You will need a PRBS source and your channel model for DJ. You need transient noise if you want to simulate random jitter, RJ. Best Regards, Sheldon |
Title: Re: transient noise simulation Post by raja.cedt on Oct 26th, 2011, 1:18am hello seldon, sorry it's a typo, i wanted to calculate RJ, not DJ. so this RJ how to determine all setting what i had in the previous post. Or can yo uplease point me any ref which explains |
Title: Re: transient noise simulation Post by sheldon on Oct 27th, 2011, 6:25am Raja, Usually, you only need to set noisefmax when simulating white noise and noisefmax/noisefmin when simulating 1/f and white noise. Best Regards, Sheldon a. Noise seed, seed for the noise generator, not really required b. Noise fmax, sets the maximum frequency of the noise c. Noise scale, probably not required. scales the noise up to reduce the effect of numerical noise on the calculation d. Noise fmin, used if you want to model 1/f noise, sets the minimum frequency for the 1/f noise generator e. Noise tmin, the inverse of noisefmax, sets the minimum time step size |
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