ADC12D800RFRB in NONDES I+Q mode using wavevision dll

Hi, Gustavo

Do you succeeded to read both I and Q channels at once? It seems to me that Non-DES I and Q mode doesn't work properly in hardware-triggered mode, i.e. I channel is sampled after HW trigger and Q channel is sampled afterwards, not simultaneously.

I say that because I'm striving to get synchronous data from I and Q channels after a triggering signal, and all I get is the correct data block containing the I channel and an usual sampling noise from Q channel.

I have tried to check this in WaveVision 5 and seems to be true: if the HW-trigger check box is checked, than I see the test pulse only on channel I and noise on Q. If I uncheck that box, then the pulse appears on both channels, as it is applied, both at I and Q inputs simultaneously.

At this point it seems to me that there is a problem with the wvdll.dll or with the fpga program. I have expected that a triggering pulse would start a simultaneous acquisition on both channels, and not a consecutive one.

Can anybody confirm if this issue is for real, or if I'm wrong?

Thank you,

Adrian

Hi, Purna

Thank you very much for your kindness! I will download the file, but I firstly wanted to reply to you. I use ADC12D1800RFRB EVM, and I wrote the program in LabVIEW, calling the library functions of wvdll.dll.

You've made my day, sincerely. I can't wait to try it, since I'm after two days of trying to understand how NonDES I and Q mode is working and how to properly read data from the FPGA, in this mode.

I have ceased these tryings late in the night and resumed them in the morning, by observing the EVM's behavior under the original application (WaveVision).

Thank you a lot, I'll keep you informed!

Best regards, 

Adrian

Hi, Purna!

It works like wow! 

I'm all a big smile now. Thank you so much, I owe you one!  

Regards, 

Adrian

Dear Adrian, 

I've just google around and notice your post regarding  calling wvdll.dll via LabView. 

By any chance can you please send/upload some example of such library calling.

I am struggling trying to connect ADS1293EVM to Labview without success. 

Thanks,

Liron    

Dear Liron,

It's not a problem to upload the example, but please let me clean it up a bit and to comment it. I'm not quite an expert in LabVIEW, so I am a little embarrassed in posting it as it is. I will try to do it today. OK?

Adrian

Hi Adrian,

That's great.

I am not a LabView expert myself, so please don't be embarrassed, no one is going to grade you depend on that example.

Thanks a lot, 

Liron 

Hi Liron,

Well, I hope I didn't missed any vi. I put it all in Example.zip, which is pretty large, due to "hardware" folder that I have included as I have it. The main vi is ADC12D1800FRB.vi. There are two paths specified, which you have to modify according to the path where you unzip the file.

These paths refer to the dlllog.txt file, created by wvdll.dll and to the location of the image which will be uploaded into the FPGA.

The instruments are saved in LV8.20, I hope you have a newer version. If you don't, then I'll convert them down.

I apologize one more time for the aspect of the program, I developed it in hurry and without great programming skills.

If you have any difficulties or questions, please let me know.

Adrian

5417.Example.zip

Hi Adrian, 

I can't emphasized my thankfulness to you, for all the troubles. 

However, I can't see the attached zip file, might it be too big? 

Can you send the zip directly to my email? lmizrahi@its.jnj.com

Thanks again, 

Liron 

Hi,

I am trying to see how the example you posted work but it won't work because there is a VI missing. It is called WA Denoise.vi. If you still have the file, can you email it to me? My email is jxa107320@utdallas.edu.

Hi, Sophia!

I have sent you a new Data Acquisition VI, from which the WA Denoise.vi is removed, as it is a part of Advanced Signal Processing Toolkit (as far as I remember).

This VI is not quite necessary as it performs a noise reduction by using wavelet analysis. The Data Acquisition.vi will work without it as well. I attach here the new version of Data Acquisition for whom may need it.

Hope this help!

Adrian

Data Acquisition without WA Denoise.zip

Hi Adrian.

Im trying to use the ADC12D800RFRB  as a part of a project of mine.  I have tried to use the LV program that you uploaded, but after changing the two paths mentiond above, the program manages to run but gives me a continuose flat line.

I have managed to get a signal when running WaveVision5, so i know everything else is working fine.

If you have any idea of how to fix this problem I will be very greatful for your asistance.

Thank you for time

Eli

P.S Im quite new to LabView, so if you have an answer can you please explain in detail.  

Dear Adrian

Sorry for the late reply. It works perfectly.

thank you again for your time, you have helped me immensly.

Eli

Hi, Eli!

I'm very glad it works for you, too! 

Thank you for your kindness!

Adrian