This paper gives a detailed analysis of the principle of the phase lock circuit, one of the most important parts of the QF1052B Standard Signal Generator and provides some methods of checking it.
本文详细分析了QF1052B型标准信号发生器锁相环部分的基本组成及其工作原理，并提出了对此部分电路的检测方法。
Due to need for the development of portable motor meter assembly checking box, a kind of frequency signal generator is designed, detailed design principle and idea are discussed.
针对“便携式汽车仪表总成校验箱”系统的开发需要，设计了一种用于汽车电子转速表、里程表校验的频率信号发生器，论述了电路的设计原理和设计思想。
This article mainly introduces several kinds of common external signal interference in measuring and automatic control system, and the method on checking during installation and debugging.
本文主要介绍在检测、自动控制系统中常见的几类外部信号干扰及其在安装、调试过程中的排查方法。
Adopt high stability crystal oscillator to ensure precise measurement and full signal input checking.
采用高稳定性的晶体振荡器，保证测量的精度和全输入信号的检查。
The theory of hall signal checking and how to change phase using DSP technology are discussed in detail and analyzed the method of using a single resistance measure phase current.
详细讨论了基于DSP技术的霍尔位置信号检测原理和换相控制原理，并分析了单电阻电流检测方法。
The train signal guiding system (on board) consisting of passive intermittent responder, train GPS system, and multiple computer checking system are equipped on the section.
站间是以车载设备为主的，由无源点式应答器、GPS列车卫星定位系统、多机校核系统构成的列车信号引导系统。
This paper presents a "waveform display method" for checking the colour TV Chrominance Delay Line in the factory, and introduces a simple, practical and self-made test-signal generator.
本文提出一种适用于工厂检测彩色电视色度延迟线的“波形方法”，并介绍了一种自制的简易实用的测试信号源。
If you are always checking your phone, your friend may get the signal that he or she is not worth your time.
如果你总是玩手机，你的朋友就会觉得他自己是在占用你的时间。
If you are always checking your phone, your friend may get the signal that he or she is not worth your time.
时间是维系友谊最基本的。对你的朋友说你没有时间就是一种拒绝。
If you are always checking your phone, your friend may get the signal that he or she is not worth your time.
时间是维系友谊最基本的。对你的朋友说你没有时间就是一种拒绝。
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