I usually go this way:
First: Know your enemy . Do some measurements with the highest possible samplerate.
Analyse the data: How does it look in the frequency domain? (Have a look at the power spectrum)
Is there power line hum? Or other noise maybe from switched power units/engines ?
Spikes?
What could be the sources of the unwanted/unexpected? Is it possible to reduce it by design? (cable, shielding, vibration, EMC? ...)
Next: what is the signal (bandwidth) I want to look at? A filter (analog or digital) can cut unwanted signals .
Rule of thumb: A lowpass filter always help. A lower low pass filter help more 😄
(If you have a strain gage, try a 470nF (more (2µF) or less (100nF)... ) capacitor in the sense line)
If you post some sample data (not pictures) , a vi containing a graph with data (make current values default) , tdms, wfrm ...
(at least some periodes of your wavy signal 🙂 ) and tell the needed bandwidth, a better hint is possible.
Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
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