I have a stopband filter to eliminate 120 Hz hum (am in the US). I can't figure out how to display only the filtered data and have it not be hidden by the raw data.
That seems to work only when acquisition has stopped. And I am uncertain that the filter is working. bandstop(a,110,130) and I still get 120 Hz hum. Set the upper and lower limits to -.1 and .1 volt, which is the setting for channel A.
If you are in streaming mode, where the trace is drawn from the left of the screen as the data is collected, the filter will not be applied until the trace is stopped by the user or the trace reaches the right hand edge when the complete waveform has been collected.
But what about... And I am uncertain that the filter is working. bandstop(a,110,130) and I still get 120 Hz hum. Set the upper and lower limits to -.1 and .1 volt, which is the setting for channel A.