分析基于DSP的电气参数测试仪测量原理，非理想同步采样的误差。
The hardware and software of an electrical parameter meter based on DSP are discussed in this paper.
在理想同步采样的条件下，提出了一种基于简谐信号复幅度的频率偏差求取算法。
Based on the complex magnitude of harmonic signals and under the condition of ideal synchronous samplings, an algorithm for computing the frequency deviation is proposed.
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