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The advantage of the new sampling approach to overcome transient effect in staircase waveform is described. Based on this sampling approach, a general form is developed in this paper. In this form, more samples of the staircase waveform are used for calculations in the measurement. It provides a better basis to achieve a lower uncertainty. The necessary theoretical basis is analyzed with interesting...
By using directly comparison method, the fundamental of DAC stepwise signal can be used as calculable AC voltage reference. A directly fundamental comparison system based on a normal commercial DAC is constructed to demonstrate the practicability of this method. The effects of the DAC quantization and the transients between adjacent steps affecting its fundamental wave are also studied.
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