When you use a DAC to generate a waveform, you may observe glitches in the output signal. These glitches are normal; when a DAC switches from one voltage to another, it produces glitches due to released charges. The largest glitches occur when the most significant bit of the DAC code changes. You can build a lowpass deglitching filter to remove some of these glitches, depending on the frequency and nature of the output signal. For more information about minimizing glitches, refer to the KnowledgeBase document, Reducing Glitches on the Analog Output of MIO DAQ Devices. To access this document, go to ni.com/info and enter the Info Code exszek.