使用先进的数字信号处理器，缩减了分立元件的数量，提高了系统的稳定性和扫频的速度；

This system has adopted the algorithm of digital down convert FFT, so the frequency resolution is improved greatly.

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本文探讨标准和非标准扫频仪中的几种频率标志的形成方法和适用场合。

This paper discusses several methods of frequency marker generation and their applications in standard and non-standard sweep analyzers.

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