Plotting Frequency Response using a bandpass filter

[TPats]

Hi everyone,

I am currently working on a Labview project where the goal is to measure, write to file, and plot the frequency response obtained. Most projects prior involved building a filter in Labview itself. However, this time around, the task is to build the bandpass filter as a circuit on a breadboard and implement it into our program. I have been doing some research and a majority of the tutorials I have found have described how to plot these responses using the Digital IIR Filter. I am trying to do these plots while using our own built filter. Does anyone have any advice as to how to implement this? We may just be overthinking it or aren't looking at the right tutorials and forums. Would a DAQ assistant provide what we are looking for? I am very new to labview still so any help is greatly appreciated, even if it just a point toward the right direction.

Thanks!

[GerdW]

Hi TPats,

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@TPats wrote:

the task is to build the bandpass filter as a circuit on a breadboard and implement it into our program.

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So you need "just" an analog output in your VI to output a signal to the filter circuit. And you need an analog input to read the filtered signal…

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@TPats wrote:

I am currently working on a Labview project where the goal is to measure, write to file, and plot the frequency response obtained. 

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Do you know how such a frequency response plot (Bode plot) usually is generated?

What have you tried so far?

Where are you stuck?