PCI 7831R Real Time data transfer max rate

[max_italy]

Hi, I've a problem with my project. I'm using the PCI 7831R for data processing and data acquisition. I've developed all the software about the FPGA, and it works fine. Now I need to transfer some data (a data flow of 100Ksamples/sec, one sample is 128 bit long) continuosly from the FPGA to the Host VI. I want to know what's the max transfer rate that I can achieve with this board. If it's possibile, what I've to do in order to obtain this transfer rate. I've tried some solutions but the transfer rate was low and not constant.

Best regards.

Max

[AlessioD]

The transfer rate depends on both the operations that are being performed after the acquisition is performed, and the operating system and platform that is being used on the Host side.

The issue is being dealt with with our support engineers.

Regards,
AlessioD

[szq]

Have you solved this problem?

[AlessioD]

Hi,

with LabVIEW 8 FPGA you have the option to use DMA transfers from the FPGA to the Host application.

This is something that was not possible with LabVIEW FPGA 7.1 or earlier.

If you have a simple piece of code that you want to try and you do not have LV FPGA Available, we can try it out for you and see if your requirements are met.

I suggest you make a phone or email support request from ni.com/ask to get in touch with one of us so that we can better handle your requests.

Regards,

AlessioD