frequency lock

This circuit can realize dual functions of a frequency lock and a coherent phase synchronization .

该电路实现了频率锁定和相位同步的双重功能。

Basing on the experimental results , several suggestions were made with regard to the overall frequency lock system .

根据得到的实验结果，对锁频系统提出了一些建议。

This thesis investigates the SLM TEA CO2 laser and its frequency lock technique .

本论文就是对单纵模TEACO2激光器及其锁频技术展开的研究。

FLOCK button . Pressing the Frequency Lock button will disable all frequency determining controls on the front panel , to prevent accidental changes of frequency .

频率锁定，按下这个按钮前面板所有频率控制按钮将被禁用，防止意外改变频率。

The principle of frequency lock loop includes delay line discriminator and it is the characteristic of the low noise , and broad band has been introduced in detail in this article .

着重介绍了延迟线鉴频器锁频环路的工作原理、低噪声特性和宽带特性，仪器实现低相噪和快速频率转换的机理。

Because of the frequency lock loop traction PLL filter can be designed very narrow , with very good noise suppression performance , to meet the precise requirements of carrier phase tracking .

由于有锁频环的频率牵引，锁相环路滤波器可以设计得很窄，具有很好的抑噪性能，满足精确跟踪载波相位的要求。

The system can scan the wideband frequency , lock the frequency of receiving data and convert the IF signal to digital data real-time .

系统能够完成宽频段扫描、锁定信号频率，实时采集中频信号。

A frequency and phase lock loop for carrier recovery

用作载波恢复的锁频锁相环

Research on the parameter model of frequency stabilization and lock stabilization control system for RLG

激光陀螺稳频稳锁区控制系统参数模型研究

Angle Modulation Limits of a Noisy Frequency Demodulation Phase Lock Loop

有噪FM解调锁相环路的角调制界限

We have set up the laser frequency chain to lock two micro cavities and put forward into locking steps .

基于该传导腔我们设计并搭建了用于锁定两个光学微腔的激光频率链系统，并且提出了两个光学微腔的锁定步骤。

The frequency and phase lock loop has been applied for the carrier recovery of VSB transmission system in high definition TV .

目前，锁频锁相环在高清晰度电视VSB传输系统载波恢复中得到了应用。

For high-frequency NMR spectrometer , in order to complete the precise frequency and phase lock function , magnetic field lock system for maintaining the conditions of nuclear magnetic resonance should be re-designed .

对于高频波谱仪来说，因要求更加精确地鉴相和锁定，就需要重新设计新的磁场稳定系统。

Analysis of the Effect of Frequency Back-push , False lock and Rejection to Acquisition at PLL

锁相环的频率反推、假锁与拒捕效应的分析

In frequency synthesis by phase lock , the loop gain will vary by the same amount due to this effect , which generally im-pedes optimization of loop performance .

在锁相频率合成器中，由于压控灵敏度的变化，环路增益也将产生同样大小的变化，这就妨碍了环路特性的最佳化。

Salient features of the microwave Power source are , all solid state , frequency stabilization through Phase Lock looP , and caPability of automatic tracking freguency variation of the transmitter .

该本振源的主要特点是全固态化、锁相稳频、兼有自动跟踪发射机频率变化的功能。

The approach can effectively detect the harmonic and reactive currents , and it is no need to adopt the fixed frequency filters and Phase Lock Loo p ( PLL ) in it , and not only its circuit configuration is simple , but also to realize it is easily .

该方法能有效地检测出单相电路的谐波电流与基波电流，且不需要采用固定频率的滤波器，不需要锁相环，电路结构简单，易于实现。

Frequency source finally choose the decimal points a VCO frequency and phase lock loop , again through the two times frequency output reached the final index signal .

频率源最后选用了小数分频和压控振荡器构成锁相环路，再通过二次倍频最终输出达到指标的信号。