According to transfer functions of the loop filter and the single phase locked loop system, it figures out the loop filters parameters, and introduces the selection of loop bandwidth.

根据环路滤波器传递函数以及单环锁相系统的传递函数，计算出环路滤波器的各个参数，并介绍了环路带宽的选择。

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The author also makes some Suggestions for frequency selection of digital carrier and parameters selection of spectrum shaping filter.

对数字载波的频率及频谱成形滤波器的特性参数的选择提出了建议。

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If the Parameters and the Call Out filter toggles are switched OFF in the Thread Milling Main dialog, only the Feature radio button of the Selection options is active.

如果叁数和呼叫出自过滤器拨动在线磨主要部份会话中被切断，只有特征选择选项的收音机钮扣是活跃的。

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