12-14-2020 05:17 PM
Hello,
I am using NI 9238 module and compactrio 9149 FPGA chassis for measuring 3Ph AC current 400Hz, for some reason my measurement is not stable. The reading is going up and down. I am injecting 1A. My reading is swinging between .97
and 1.1 A.
Please help how to make the measurement stable.
Thanks
Solved! Go to Solution.
01-21-2021 12:57 AM
03-10-2021 05:35 PM
Thanks guserwin91. Yes you're right, noise is causing the problem. I added AC input filter and the measurement became stable.