Re: [SI-LIST] : The FFT analysis with AvanWaves

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From: Mohan Kumar (mohan@sageindia.co.in)
Date: Sun Jan 07 2001 - 20:28:38 PST


Hi

I did face the same problem. I guess this limitation is brought about by the FMIN, FMAX and NP settings in the FFT syntax. The FMIN and FMAX values are dependent upon the start and stop time of the transient simulation. Please refer to the Avanwaves manual ( Chapter 26 ) for more details.

You could also use .FOUR ( fourier transform ) if u r not particular about any window.

R. Mohan Kumar
MTS, Analog Group
SAGE Design Systems ( India ) Pvt. Ltd
Bangalore, India
www.sageinc.com

-----Original Message-----
From: Jinhua Chen <chen@nesa.com>
To: SI List <si-list@silab.eng.sun.com>
Date: Friday, January 05, 2001 10:08 PM
Subject: [SI-LIST] : The FFT analysis with AvanWaves

>Hi, All,
>
>I am using the FFT feature in AvanWaves to analysis the frequency
>spectrum of the high speed data stream (3+ Gbps). I want to see the
>spectrum up to 10 GHz. But the output spectrum stopped at about
>5.2 GHz. There might be two causes: 1. There is a range setting
>somewhere I did not know. Or, 2. The AvanWaves has its own frequency
>limit for the output spectrum.
>
>Thanks for the comments!
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