Basic metrological properties of electronic oscillators with direct digital synthesis
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- 作者：Yu K. Rybin ; rybin@tpu.ru ; T.A. Petlina
- 关键词：Spectrum ; Measuring signal ; Instability ; Total harmonic distortion ; Direct digital synthesis
- 刊名：Measurement
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：98
- 期：Complete
- 页码：243-249
- 全文大小：791 K
- 卷排序：98
文摘
The signal at the output of DDS is non-periodic with variable amplitude and period. The spectrum of the output signal contains harmonic components with non-multiple frequencies. Instability of amplitude and period depends on a specified period. In all cases, the required sampling frequency is greater than the Nyquist frequency. Sampling frequency is determined depending on a specified error of amplitude, error of period, or total harmonic distortion.