This a long time before I do a digital switching system.
这是我很久以前做的一个数字转换系统。
Algorithms for fault detection and diagnosis of T-S-T digital switching networks are devised in the paper.
本文设计了T - S - T数字交换网络的故障检测与诊断算法。
Broadband Digital Symmetrical Cable: Conform to the standard:YD/T818. Usage:Mainly used for connection between digital switching equipments and Broadband Networks.
宽带数字对称电缆：符合标准：YD/T818。用途：电缆主要用于数字交换设备之间的连接，也用于宽带网络传输。
As a consequence, television broadcasters now need little more than half the spectrum they hogged before switching to digital.
结果，电视广播公司现在仅需数字转换前所攫取频谱的一半。
As a consequence, television broadcasters now need little more than half the spectrum they hogged before switching to digital transmission.
这样做的后果就是电视转播机构现在只需要转变成数字方式发射前使用的频谱的一半多一点。
Switching to digital clears the way.
而转换到数码模式则扫清了前进的道路。
This paper is to introduce the application of Tektronix TDS7000 Digital Fluorescent Oscillometer in measuring and analyzing the power loss of switching supply.
本文介绍泰克公司TDS7000数字荧光示波器应用在开关电源功率损耗测量中进行的测量和分析任务。
Also, a large frequency spectrum (698-806 MHz) was freed by switching over from analog TV to the digital one.
此外，从模拟电视信号到数字电视信号的切换也释放了广阔的频道(698- 806mhz)。
Install electromechanical, analog and digital trunking systems, circuits and equipment in telecommunications central offices and switching centres.
在电信中心办公室和交换中心安装工机电，模拟和数字集群系统，电路和设备。
Switching logic in addition to adding a control strategy, a switching logic can be added to a schematic for digital control such as switch status.
除了可以作为控制策略外，一个切换逻辑性还可以用来描绘数字控制比如状态切换。
Fully digital line switching and MCU controlled service reset timing.
全数字化线路开关和单片机控制服务复位时间。
For ex ample, hot switching is typically used where digital logic is involved, because devices may change state if the power is interrupted even for a brief instant.
例如，当涉及到数字逻辑时，由于即使瞬间中断信号，器件的状态也可能会发生变化，所以通常就需要采用热交换。
Hot switching: When digital signals are being switched, they may change state with any length of power interruption. Using hot switching prevents digital state changes.
热切换：当数字信号被切换时，任何时间长度的电源中断都会使其改变状态。采用热切换可防止数字状态变化。
Shannon 's 1938 master's thesis, A Symbolic Analysis of Relay and Switching Circuits , used Boolean algebra to establish the theoretical basis of modern digital circuits.
香农写于1938年的硕士论文，“继电器与开关电路的符号分析”，应用布尔代数建立现代数字电路的理论基础。
The HSI 29800 Type series recognizes all known ANALOG and DIGITAL ARINC standardized signals and languages. It processed the different formats built in electronic switching.
HSI 29800型系列能够识别所有已知的模拟和数字ARINC标准化信号和语言，它通过内置电子转换处理不同的公式。
In the fifth semester, we learned fundamental knowledge of semiconductors, AC circuit amplifier, and the switching among logic circuit, analog circuit and digital circuit.
在第五学期我们学了半导体基础知识、交流放大电路、逻辑电路、模拟电路和数字电路的转换。
And this design makes DSP TMS320F2812 be control chip. This method improves switching frequency and control precision. It can achieve Full Digital control.
为了提高开关频率和控制精度以达到更好的效果，设计中采用数字信号处理器TMS320F 2812作为控制芯片，实现了全数字化控制。
Subscriber line interface circuit is an important part of digital program-controlled switching system.
模拟用户线接口电路是数字程控交换系统的重要组成部分。
A new circuit scheme for the address coded TDM switching system of low speed digital channels is discussed in this paper.
本文叙述了一种适用于低速数字信道的地址编码时分交换系统的新的电路方案。
This paper presents a digital controlled full bridge ZVS PWM switching power supply, which is based on sliding mode control method by using DSP.
本文以滑模变结构为控制核心，研制了以DSP为控制芯片的全数字化全桥移相软开关电源。
The direct digital frequency synthesis (DDS) is a kind of new frequency synthesis method. It has high frequency resolution, fast frequency switching speed, etc.
直接数字频率合成(DDS)是一种新的频率合成方法，具有频率分辨率高、切换速度快等优点。
The method of minimum switching losses SVPWM has characteristics of simple calculation and easy digital realization.
用空间电压矢量方法产生最小开关损耗的PW M具有计算简单、易于数字实现的特点。
To adapt to the broadband and packetized network development trend, the digital SPG switching paradigm in PSTN should be gradually evolved to a combined ATM and IP service switching platform.
为了适应网络宽带化、分组化的发展趋势，PSTN中的数字程控交换要逐步演进为包含ATM交换和IP功能的综合业务交换平台。
To adapt to the broadband and packetized network development trend, the digital SPG switching paradigm in PSTN should be gradually evolved to a combined ATM and IP service switching platform.
为了适应网络宽带化、分组化的发展趋势，PSTN中的数字程控交换要逐步演进为包含ATM交换和IP功能的综合业务交换平台。
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