Hiroki Tamakoshi Posted May 7, 2018 Share Posted May 7, 2018 I'm using Analog Discovery 2 and WaveForms 3.7.5 on macOS 10.13. It works perfectly as expected, and I want to cut the fluctuation below than 0.1Hz and the power supply noise(50Hz). Is it possible to add a bandpass filter to pass between 0.1 and 50Hz to the oscilloscope? Link to comment Share on other sites More sharing options...
attila Posted May 7, 2018 Share Posted May 7, 2018 Hi @Hiroki Tamakoshi See the Scope/ Add Channel/ Math/ Filter Link to comment Share on other sites More sharing options...
Hiroki Tamakoshi Posted May 8, 2018 Author Share Posted May 8, 2018 11 hours ago, attila said: Hi @Hiroki Tamakoshi See the Scope/ Add Channel/ Math/ Filter Thank you attila! This is exactly what I wanted to do. I couldn't set the lowest frequency lower than 1Hz, but it works for me currently. Just one more question: the filtered result dips deeply at the early phase as the attached image shows. I want to avoid this phenomenon. Is it possible? Link to comment Share on other sites More sharing options...
attila Posted May 8, 2018 Share Posted May 8, 2018 Hi @Hiroki Tamakoshi Could you save and post the workspace to see the raw captured data? Link to comment Share on other sites More sharing options...
Hiroki Tamakoshi Posted May 13, 2018 Author Share Posted May 13, 2018 Hi, Here's the workspace I saved. with best regards, default.dwf3work Link to comment Share on other sites More sharing options...
attila Posted May 14, 2018 Share Posted May 14, 2018 Hi @Hiroki Tamakoshi I don't think we can do anything about the leading data in time domain. It looks like the filter needs significant amount of data for initialization. You could eventually use only the second, stabilized part of the time data. On the other hand the frequency response looks perfect for the whole data range. BTW: WF v3.7.22 lets you set filter frequency lower than 1Hz: https://forum.digilentinc.com/topic/8908-waveforms-beta-download/ Link to comment Share on other sites More sharing options...
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Hiroki Tamakoshi
I'm using Analog Discovery 2 and WaveForms 3.7.5 on macOS 10.13.
It works perfectly as expected, and I want to cut the fluctuation below than 0.1Hz and the power supply noise(50Hz).
Is it possible to add a bandpass filter to pass between 0.1 and 50Hz to the oscilloscope?
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