02-08-2011 10:11 AM
I have a NI SCXI-1104 and in its datasheet says that it has on each channel a three-pole lowpass filter with a 2 Hz cutoff frequency to reject 60 Hz noise. I need to know: What kind of filter this device uses? What happen with the data over the cutoff frequency? In my case I need to analyze the frequency between 1 to 8 Hz and reject the others.
02-08-2011 02:10 PM
This board is for the Excel add-0n called Measure.
Well it's three-pole low pass filter and frequencies above 2 hz are going to be greatly attenuated. This module is intended for thermoucouple (dc) inputs and would not be suitable for any sort of frequency analysis, in my opinion