Hi @Paul Chang It looks like you are using an old software version. You find the newer one at: https://reference.digilentinc.com/waveforms3 or https://analogdiscovery.com/ You can find the latest beta versions at: https://forum.digilentinc.com/topic/8908-waveforms-beta-download/ The Noise band plot can be disable under each channel gear dropdown. The capture of such Noise data for all channels can be disabled or under time options or in older software version under time gear dropdo