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- Frequency Compensation in All Channel CATV Systems. 全频道共用天线电视系统的频率补偿
- The design principle of the campus CATV system in Shandong University of Architecture and Engineering is reviewed. 介绍了山东建筑工程学院校园电缆电视系统的设计原理。
- In the past, some CATV system operators tried to implement channel tiering, but it was not successful. 过去业者曾经实施分级付费,然而并不成功;
- In this paper the nonlinear distortion in a lightwave AM-VSB CATV system with erbium-doped fiber amplifier(EDFA) was studied theoretically. 本文从理论上研究了有掺铒光纤放大器的光纤调幅有线电视系统的非线性失真问题。
- Mainly analyses several cases of signal level variation in CATV system,and also points out practical methods to be consulted by workers in CATV system. 就电缆电视系统信号电平变化的几种情形作系统的理论分析 ,并指出解决办法 ,供广大有线电视系统工作人员参考
- In this paper the nonlinear distortion in a lightwave AM?VSB CATV system with erbium?doped fiber amplifier(EDFA) was studied theoretically. 本文从理论上研究了有掺铒光纤放大器的光纤调幅有线电视系统的非线性失真问题。
- It is targeted as the "content provider" to match with the CATV System Stations operation,which focus on the audience acceptance rate. 它是以“信息提供”为目标,收视率为中心的有线电视系统实施。
- In this paper, the noise in CATV system is discussed in detail and, moreover, a series of practical formulas for calculating the C/N in CATV system are deduced. 本文详细讨论了电缆电视系统中的噪声问题,并推导出一系列有关电缆电视系统中载噪比计算的实用公式。
- The concept of effective distortion term was suggested and the distribution of effective 2nd and 3rd distortion terms in a 60-channel PAL-D AM CATV system was evaluated. 提出了等效失真项的概念,并对60个PAL-D制频道的光纤调幅有线电视系统计算了等效二阶和等效三阶失真项分布。
- This article introduces some technical problems often ignored and analyses special troubles made by coaxial cables in CATV system connecting theory with practice. 从理论到实践分析了有线电视系统中由同轴电缆引起的一些特殊故障,它是在有线电视系统升级改造与维护工作中常被忽视的技术问题。
- This article discusses the selection of compatible closed circuit television channels in all channel CATV system and explains how to use pocket computer to aid the design. 本文就全频道CATV系统中如何选择相容的闭路电视频道进行了探讨,并介绍了如何用袖珍计算机进行辅助设计问题。
- The article discussed how to upgrade the communication networks of CATV system and telephone system to support multimedia information service system, and introduced hybrid fiber coax and asymmetric digital subscriber line access technology. 讨论了如何将现有的有线电视传输网络以及电话通讯网络升级,以适合多媒体信息服务系统技术的需要,同时也介绍了光纤电缆混合网和非对称数字用户线等适合于多媒体信息服务系统的接入技术。
- An organization responsible for electrical standardization,including standards for materials,components and methods of measurement.Some of the IEC's work relates to telecommunications applications in the fields of wires,cables, waveguides and CATV system. 一个负责电工技术标准化的委员会,包括器材、元件以及测量方法的标准化。其某些工作涉及远程通信技术在有线、电缆、波导以及共用天线电视系统中的应用。
- This peper describes the distribution of crossmodulation and intermodulation originated along the CATV System, as well as the interrelation and accumulation of those nonlinear products. 交扰调制比CM和载波互调比IM是电缆电视系统非线性的两项主要指标,本文主要讨论电缆电视系统中放大器变调、互调产物的分布及各种产物的内在联系和积累规律。
- In this paper, we propose three fiber optical CATV systems.Firstly, an externally modulated AM-VSB CATV system that uses external light injection technique is proposed and demonstrated. 在本论文中,我们共提出了三个系统架构,以外部光源注入的技术,探讨光纤有线电视传输系统的特性。
- In this paper, CTB is theoretically analysed and simulated on PAL-D 450MHz and 550MHz CATV systems. 本文对CTB进行了理论分析,并对我国450、550MHz二种CATV系统调制时的CTB进行了计算。
- The domains of the CATV Systems market and the market value of company's stock over 100 multiples. 有线电视体制市场的领域和公司股票的市场价值的1000倍。
- It is found that the uniform linearly chirped grating can not be used in CATV systems. 对光栅的色散特性进行数值估算,发现常耦合系数线性啁啾光栅不能用的有线电视系统中进行色散补偿。
- During Games Time a number of separate,not interconnected, CATV systems are established from different entities(BOB,BOCOG etc. 在奥运会期间,不同的机构(如北京奥组委,BOB等)拥有各自独立对闭路电视系统。
- WISI Germany was founded in 1926 and always concentrates its activities exclusively on antennas, SMATV, HFC, CATV systems and other related equipment. 德国WISI公司成立于1926年,发展至今已成为全欧洲首屈一指之电视通讯设备系统器材制造厂,其产品行销全球九十余国。