timing reference

The devices in SDH network possess the function of extracting timing reference from STM-N.

SDH网络设备必须具有从STM-N线路信号中提取定时参考的功能。

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The detection methods studied in this paper can be used not only as reference with the implementation of Timer-Charging system for telegraph station SPC exchange measurement test timing in technical supervision department, but also as the self-examination by the telecommunications operators.

本文所研究的计费系统检测方法可作为技术监督部门实施局用程控交换机计时计费系统计量检定的参考，也可作为电信运营商自查依据。

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High-precision satellite navigation and positioning, timing measurement, posture measurement and lateral measurement techniques depend on high-precision spatial reference and time reference.

高精度的卫星导航定位、授时、测姿及侧向等技术都依赖于高精度的空间基准和时间基准。

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MCU get timing reference by zero-crossing detection. It compare the current speed feedback with the object feedback, and control the conduction phase and time using PWM mode to realize the stable speed-regulating of AC PG-motor.

单片机通过过零检测获取计时基准，比较当前转速反馈与目标反馈，采用脉宽调制PWM方式来控制三端双向可控硅开关器件的导通相位角及导通时间，实现交流PG电机的平稳调速。

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A counter with timing fiducial oscillator acts as a frequency multiplier, and the count value in the prior period is taken as the reference for the current period to give the decimal part of a signal period.

该方法利用带基准时基的数字计数器实现周期内线性细分，当前周期信号将前一整周期的倍频数作为参考构成信号周期的小数部分。

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The rapping sequence of the first electric filed is used for the timing reference of the others of the ESP, so the right rapping relations among the electric fields are continuously maintained.

在同一台电除尘器中，将第一电场的振打时序作为其它电场时序控制的基准，从而避免了采用独立控制时因定时器长期累积误差所造成各电场之间振打时序关系的错误。

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To improve the timing precision of the receiver, it is necessary to research the timing reference point of the second signal.

为了提高接收机的定时精度，对反映低频信号秒到来时刻的确定方法作了较为深入的研究。

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Each ACE includes a programmable baud rate generator that can divide the timing reference clock input by a divisor between 1 and ( 216-1).

每一个集成异步通信器件包括一个可编程的波特率发生器，它能够对输入时钟进行1～216-1的分频。

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In this curve, the point which had the largest inclined rate was a timing reference point of low frequency time-code receiver.

该曲线的斜率最大点即为低频时码接收机的秒定时参考点。

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Although GPS has been widely used, Loran-C is still highly desirable to be as an alternative PRS ( primary timing reference source) for an important part of a nation's infrastructure in Europe, Asia, and others areas, even in United States.

虽然GPS被广泛应用，但在欧洲、亚洲，甚至美国，罗兰C作为国家基础设施的重要组成部分，在授时方面依然被高度期望成为可选的主用定时参考源。

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