A developed linear VCXO with wide frequency deviation has acquired better results.
研制的宽频偏线性压控晶体振荡器取得了较好的结果。
Voltage controlled crystal oscillator (VCXO) plays an important roll in the atomic frequency standard.
压控晶体振荡器是原子频标的重要组成部分。
Through analysis, technical requirements for VCXO used in the cesium atomic clock are put forward in this paper.
本文从分析压控晶体振荡器的技术指标对铯束频标的影响出发，提出对它的技术要求。
The timing error detector and loop filter of HDPLL are all digitized, whereas the VCXO employs analog components.
HDPLL中定时误差检测器、环路滤波器是全数字的，而VCXO使用了模拟器件。
This kind of VCXO cover a wide variety of radio communications and other electric equipments as frequency source.
这类压控晶体振荡器广泛用于无线电通讯和其它电子设备作频率源。
The performance of VCXO must be excellent so as to maintain the inherent frequency accuracy and stability of the atomic standard.
要使晶体振荡器的输出信号保持原子标准所固有的频率准确度和稳定度，所用压控晶体振荡器必须具有优良的性能。
In this paper, a solution of a control system, which USES the standard time signal as the system reference to lock the local VCXO, is proposed.
论文提出了一个以远距离传输的标准时间信号为参考来锁定本地晶体振荡器的锁相控制系统的实现方案。
This paper introduces the method of clock calibration to VCXO in system, based on GPS and CPLD. It can solve the problem of frequency offset because of Crystal worse behavior in Long-term use.
本文还给出了基于GPS芯片和CPLD，对系统压控晶振时钟进行校准的实现方法，有效解决了由于长时间使用，晶振自身特性变化，造成的频率偏移现象。
This paper introduces the method of clock calibration to VCXO in system, based on GPS and CPLD. It can solve the problem of frequency offset because of Crystal worse behavior in Long-term use.
本文还给出了基于GPS芯片和CPLD，对系统压控晶振时钟进行校准的实现方法，有效解决了由于长时间使用，晶振自身特性变化，造成的频率偏移现象。
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