Hi,
After doing some test I have a beginning of explication. I have used the real time system manager to evaluate the CPU usage. I have acquired 8 analog Input with FPGA and transmitted them to RT by the IRQ method. I did the test for cluster, array, and 8 single channel transmission.
After 20000 Hz the RT CPU usage was superior than 100 %, and bug. I attach my VI and my results.
Download File:post-1636-1109952736.zip
Download File:post-1636-1109952738.pdf