可编程脉冲吞除频率合成器及其应用分析

可编程脉冲吞除频率合成器是应用微程序控制技术和脉冲吞除技术构成的一种新颖的数字式频率合成器,它的电路结构简单,可以在不改变输入基准频率和电路结构的前提下,通过“编程”来改变输出频率。所产生的输出频率准确稳定,且能灵活改变。文章阐述了这种新型频率合成器设计的数学依据,并以SN368遥测地震仪控制系统主时钟电路为实例,对其电路结构和工作原理进行了深入剖析。图3表2参4

Programmable Pulse Swallowing Frequency Synthesiser and Its Applications

Programmable pulse swallowing frequency synthesiser is a product of programmable microcontrol technique and pulse swallowing technique. It is characterized by the simple circuit. It may regulate the output frequency through "programme making" without changing the input reference frequency and the circuit. The output frequency is precise, stable and controllable. The mathematical basis for the designing of this synthesiser is presented in this paper. With the circuit of the main clock of the controll system of SN368 telemetric seismic instrument as an example, a detailed investigation is made on the principle and components of the circuit of this synthesiser.