摘要
所设计脉冲序列发生器采用一个石英晶体振荡器的振荡频率作为标准信号频率,通过锁相环的控制和计算产生与石英晶体相同稳定度和精确度的一系列离散频率——AT89C2051采集频率,并将采集到的数值通过液晶屏显示出来.该系统频率转换速度快,合成频率范围宽,抗干扰能力强.
The precision and regulable pulse generator uses the vibration of a crystal oscillator as standard signal frequency,and creats discrete frequencies the same as the crystal a single-chip microcomputer gathers the frequency and shows it on a LCD screen. The generator is of low cost and high power. The scope of frequency is wide,and anti-jamming capability strong.
出处
《石家庄职业技术学院学报》
2009年第6期32-34,共3页
Journal of Shijiazhuang College of Applied Technology
关键词
锁相环
单片机
信号源
phase-locked loop
single-chip microcomputer
pulse sequencl generator
