Regarding Labview software version and block used in image

[jay524]

Hi i am jay, I am working on my Project and I wanted to design FMCW radar in labview using USRP 2921 kit I wanted  to know  regarding Labview software as I am unable to access some of blocks in labview such as FFT, LPF,Windows blocks which is mentioned in image and I have attach in these mail I just want to know how could I access those block and which version labview software it  used in below design . I would be really thank you if you help me.

[GerdW]

Hi Jay,

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@jay524 wrote:

I wanted  to know  regarding Labview software as I am unable to access some of blocks in labview such as FFT, LPF,Windows blocks which is mentioned in image and I have attach in these mail I just want to know how could I access those block and which version labview software it  used in below design .

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So which LabVIEW version do you want to use?

Which version is installed (exact version name (2019/2021/2023Qx), bitness (32/64), edition (base/advanced/pro), modules, toolkits)?

In the image LabVIEWNXG is shown: do you (still) use that?

[jay524]

i am using labview 2019 , 32 bit ,edition (advanced), and toolkit i have installed are Data comm, signal processing, RF tools , control and simulation as of now half of design i have implemanted in 2019 labview, and i am unable to acess some blocks , would you please help me to  acess the blocks which i have show in image such as lpf , windows etc. i have uploaded my design vi file.

[jay524]

What is the  difference between labviewNXG and labview 2019 version , can i impleament LabviewNXG file in Labview 2019 version? 

[Bob_Schor]

NI dropped development (and support?) for LabVIEW NXG in 2022.  They also stated that there is no "direct" way to convert NXG code to "classical" LabVIEW.  

That being said, you can certainly install LabVIEW 2019, have another machine (or VM) running LabVIEW NXG so you can open (and view) your NXG code, then re-create the VIs and other elements of your code in LabVIEW 2019.  I greatly recommend using Version Control as you do this.

Bob Schor

[jay524]

Hi

 i have design a reciver for fmcw radar and i am facing issue with filter . I there is error in nmy code from multiplier to lowpass filter its showing error in lowpass, somtimes its says that memory is full in labvew, could you please verify my code, and suggest me a solution for my code.I have attached my file aswell as figure. I wanted to implement as above block which  i have posted early.

[GerdW · Accepted solution]

Hi Jay,

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@jay524 wrote:

there is error in nmy code from multiplier to lowpass filter its showing error in lowpass, somtimes its says that memory is full in labvew

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There are several issues in your VI:

• Why do you create an array of waveforms when you multiply the waveform from FetchRxData with an array of chirp data? Do you really need to create an array of waveforms in this operation???
• How do you convert this array of waveforms to a DDT wire? There is a big coercion dot on this ExpressVI: do you know the meaning of coercion dots???
• When the filter function gives a "lowpass error" then most often you don't obey Mr. Nyquist. What is the input data when you receive this specific error?
• When the filter gives an "out of memory" error then most often an input parameter is wrong (likely the dt value of your waveform(s)!). What is the input data when this error occurs?
• Why don't you handle errors programmatically?
• You mix "standard" functions with "pt by pt" functions (Fourier transform): is this really intended?

[jay524 · Accepted solution]

Hi GerdW,

I am really new to these software and i am from RF and Microwave Departmeant i really dont have much  understaning of these software  , i have corrected fews of errors . I would request you to please help me to correct fews errors, and i could not connect the low pass filter would you please help me and send me corrected VI. I would be really thankyou for that. I have attached the file.

thankyou

[jay524 · Accepted solution]

Hi GerdW,

I wanted to impleament the block which i have attached the the image would you please make the block for me as i am really unable to impleament that block. I have used the input frequency f.c 1G and IQ rate 500K and chirp bandwidth as 1G and 2G.

[GerdW · Accepted solution]

Hi jay,

the LabVIEWNXG images shows functions that look like "Butterworth low pass filter" ("LPF") and some windowing function. In LabVIEW you find a SignalProcessing palette with lots of filters and windowing functions, too…

On your VI: it doesn't make sense to wire a waveform into the "Y" input of a BuildWaveform function. All you need is to wire the waveform to the waveform input of BuildWaveform and change the dt value…