04-07-2025 08:42 PM
Hello everyone, I’m looking for some advice as I am new to LabVIEW. I’m currently measuring resistance with an NI-PXI 4071 on test parts while sourcing current through them with a keithley power supply. I want to run these measurements through an FFT to analyze these measurements in the frequency domain to ensure we aren’t seeing excessive noise in these measurements. I’m semi-familiar with the FFT sub-vis in LabVIEW but I want to understand how to send this data through an FFT. From what I understand, the sampling rate is dependent upon the resolution. I also understand that this DMM also has noise reduction calculations for powerlines to dampen noise at 50 or 60hz. I’ve also read up on adjusting the aperture time, common-mode rejection, normal mode rejection etc. It’s all a bit overwhelming, but I just want to ensure that the measurements I am getting have the least amount of noise interference as possible. Does anyone have any experience with this DMM and have any VIs to share? Anything would be very helpful. Thanks
04-08-2025 03:44 AM
Hi JohnDoe,
you asked the same on Reddit, but forgot to link to your question.
That's considered inpolite!