Labview NI 5734 Flex-RIO adaptor module for long time signal acquisition

[AnveshRaJA]

Dear NI Team,

 I am using NI 1073 Chassis and NI7962R as a target device of Flex RIO for my project. I wanted to record a signal for at least 1 min using gettingstarted.lvproj example that I got from the Labview examples file. In order to do so, I am changing the required samples value which has a limitation till some point in the default example. Later, I increased  the DMA buffer size in FPGA target and still could not record for 1 min. I tried with the invoke method but I does not know how to edit the invoke method as I am new to the Labivew. I use Labview 2017 version in windows 10 OS. Please, help me regarding this.

Thanks in advance,

Sincerely,

Anvesh Raja

[RobGeografo]

Hi Anvesh,

I have found this article which has some hint on steps to carry with invoke methods in your case:

Missing Data When Using DMA FIFO With High Sample Rates on FPGA - https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000P9zTSAS&l=en-US

Let me know if this helps.

Best,

Rob

[AnveshRaJA]

Hello Rob,

 Thanks for the reply. I have tried the way that is shown in the link you provided but I am facing a new problem that I cannot see the input on he screen. I am giving the input of 10 kHz sine wave with 120MHz sampling rate and 25 k required samples, you can see them in the attached files.

I am unable to understand what is happening. Please, let me know where I am going wrong.

Thanks again and have a nice day!!