My reason for oversampling is that my sampling frequency has a direct effect on loop execution time. I'm monitoring multiple analog input channels and I need to know, for example if I reach an overpressure condition so I can shut down quickly. I also need to stop sampling to do other things...
All, thanks.
The frequency content is mostly the carrier frequency of the VFD 6kHz, but my noise floor seems to be below -60db which I thought was pretty good. I have been very careful with respect to grounding/shielding issues. I am in the process of building the final product which will have...
I have a differentially coupled DAQ Analog Input collecting data from a current sensing resistor at 500 samples per second.
I have a 25HP (VFD) variable frequence drive that is noisy nearby. Dang it! Yes, it's my fault it's so close. I didn't think it would be that noisy. Doh!
I drive the...
