Multisim and Ultiboard

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Having trouble creating noise source with PWL Source

Hello,

 

I am using a text file (attached) that has random values on the voltage collum, so I expected to obtain a noise source when I imported this file to my PWL source. Yet, all I see is a sawtooth kind of pattern. Could anyone help me create the noise source?

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Hello,

 

Your file seems to be working, this is what I got:

 

noise PWL.png

 

The problem I noticed in your file is the X colum (time). Your time step is 1 second; simulating the file could take hours unless you modifiy the maximum time step (TMAX) in Multisim. I better approach is to use miliseconds for the X colum. See the attached file (noiseMS.txt), I converted seconds to miliseconds. Not sure what your Multisim version is, but I'm also attaching my test circuit in v13.

Hope this helps.

Fernando D.
National Instruments

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