基于ATE的IC测试原理、方法及故障分析

介绍了基于ATE的集成电路的测试原理和方法,包括电气特性测试原理和功能测试原理,详细地介绍了通用的测试方法以及一些当今流行的比较特殊的测试方法,并以一个功能较为全面而典型的具体电路为例进行了常见的故障分析.     

基于ATE的IC测试原理、方法及故障分析

介绍了基于ATE的集成电路的测试原理和方法，包括电气特性测试原理和功能测试原理，详细地介绍了通用的测试方法以及一些当今流行的比较特殊的测试方法，并以一个功能较为全面而典型的具体电路为例进行了常见的故障分析.     

播出系统硬件验收测试探讨

本文主要介绍陕西电视台新建播出系统的验收测试,包括同步系统指标测试、通道指标测试、服务器指标测试,以及系统功能测试项目等。同时对所用仪器、测试方法,测试点位,测试结果、结果分析,以及问题解决办法也进行了阐述和分析。     

MCU芯片Multi-Sites测试中几个值得关注的问题

介绍了MCU芯片Multi-Sites测试方法,针对MCU芯片Multi-Sites测试的难点,阐述了在MCU芯片Multi-Sites测试过程中经常影响测试系统和测试效率的问题。主要提出了MCU芯片MultiSites测试过程中的直流参数测试、功能测试的影响因素和解决方案,并对MCU芯片Multi-Sites测试过程中经常遇到的干扰因素进行分析,尽可能保证MCU芯片Multi-Sites测试过程中获得的各项性能参数稳定可靠。     

SOC芯片并行测试中几个值得关注的问题

介绍了提高测试效率的SOC芯片在片测试的两种并行测试方法,结合上海集成电路技术与产业促进中心的多个实际的SOC芯片测试项目中所积累的成功经验,针对多工位测试和多测试项目平行测试这两种并行测试方法,主要阐述了在SOC芯片的并行测试中经常遇到的影响测试系统和测试方法的问题,提出了在SOC芯片在片测试中的直流参数测试、功能测试、模数/数模转换器(ADC/DAC)测试的影响因素和解决方案,并对SOC芯片在测试过程中经常遇到的干扰因素进行分析,尽可能保证SOC芯片在片测试获得的各项性能参数精确、可靠.     

计算机网络产品协议一致性测试技术及标准研究

阐述了网络产品协议一致性测试原理,并对协议测试基础标准ISO/IEC9646《信息技术开放系统互连一致性测试方法和框架》进行了详细介绍。     

蓝牙无线测试

该文讨论了蓝牙无线测试的原理及其测试方法,并简单介绍了安立公司的蓝牙无线测试解决方案。     

S—635在线测试系统及其在故意电路板修理中的应用

本文主要介绍故障电路板测试技术，美国Ｓｃｈｌｕｍｂｅｒｇｅｒ公司的在线测试系统Ｓ－６３５的结构，工作原理及其在我省通信设备故障电路板修理中的应用情况。     

电子产业中的检测手段——印刷电路板在线测试

介绍了印刷电路板在线测试的原理,分析了几种近年来发展韧带的在线测试中的工艺性测试并对几大公司的工艺性测试方法作了简要说明。     

印制电路板特性阻抗的测试技术

为了更深入的探讨特性阻抗的测试技术,本文就特性阻抗的基础知识、TDR测试原理和测试方法等做了详细的介绍。     

GEMNET: a generalized, shuffle-exchange-based, regular, scalable,modular, multihop, WDM lightwave network

GEMNET is a generalization of shuffle-exchange networks and it can represent a family of network structures (including ShuffleNet and de Bruijn graph) for an arbitrary number of nodes. GEMNET employs a regular interconnection graph with highly desirable properties such as small nodal degree, simple routing, small diameter, and growth capability (viz. scalability). GEMNET can serve as a logical (virtual), packet-switched, multihop topology which can be employed for constructing the next generation of lightwave networks using wavelength-division multiplexing (WDM). Various properties of GEMNET are studied     

Thermodynamics of copper matte converting: Part III. Steady-state volatilization of Au,Ag, Pb,Zn, Ni,Se, Te,Bi, Sb,and As from slag,matte, and metallic copper

A comprehensive compilation of various thermodynamic data required for a complete analysis of copper matte converting reactions is presented. The data comprise estimated free energies of formation for such gases as SeO, SeS, TeO, TeS, BiO, BiS, SbO, SbS, AsO, and AsS, as well as activity coefficients in dilute copper alloys and vapor pressures of various elements and compounds. The volatilization of minor elements in steady-state reactors comprising gas and several condensed phases is mathematically formulated, and a parameter which governs the volatilization in such reactors is defined and named volatilization constant. The vapor pressures of various volatile species are calculated thermodynamically for the Noranda Process reactor by assuming equilibrium conditions. The volatilization constants of various minor elements are expressed explicitly as functions of oxygen and sulfur activities. Formerly Associate Professor, Department of Metallurgical Engineering, University of Utah, Salt Lake City, UT     

Bits, symbols, bauds, and bandwidth

The use of clear, concise, and unambiguous language in telecommunications engineering is vital to communicate a desired meaning and understanding. Terminology should be based on rigorous engineering principles and traceable to well known and dependable sources. This article deals with four everyday terms commonly encountered in the popular semi-technical press as well as in serious engineering periodicals. The misuse of these and other terms can lead to low-balled cost proposals, court litigation, and patent infringement cases. Imagine how an engineering student can be confused when she/he typically encounters bandwidth measured in bits per second     

Novel planar, square-shaped, dielectric-waveguide, single-, and dual-mode filters

This paper presents a novel concept of a square-shaped dielectric-waveguide resonator, which can easily realize a dielectric-waveguide cross-coupled filter or a dielectric-waveguide dual-mode filter, using the conventional printed circuit board (PCB) process. This planar dielectric-waveguide resonator has a higher Q value than a microstrip resonator. The physical mechanisms of both single- and dual-mode filters are elucidated. Some new coupling structures are developed for undergoing the PCB process. Filter design procedures are detailed. Design curves for the coupling coefficients of internal- and external-coupling structures are determined by full-wave finite-element-method electromagnetic calculations. Measurement results are highly consistent with theory for all trial filters. This study offers an effective means of producing low-cost high-performance planar circuit filters.     

PBX技术.市态.营销.选购

本文介绍了ＰＢＸ交换机的技术及市场需求态势。并提出ＰＢＸ产品的营销要素及其用户在选购时应遵循的原则。     

Dilemmas,uncertainty, risks,and board performance

This paper traces the origins of the words risk, uncertainty, governance and development and argues that a deeper understanding of each allows more effective decision taking in the boardroom. It argues that the role of the board of directors is to balance and rebalance continuously their irresolvable dilemma — ‘how do we drive our enterprise forward while keeping it under prudent control?’ It argues that it is the board’s role to focus on uncertainty, rather than risk, and this requires a different set of intellectual skills from board members to be able to cope with monitoring a range of diverse scenarios. This is crucial for a board to develop stronger ways of both leading their organisation and of ensuring the connectedness of the learning within and between the board and the operational unit’s risk taking. It advocates that to achieve this a board must develop new ways of learning — especially of thinking strategically and becoming more sensitised to the dynamics of their changing external environments. This will take them well beyond the comforts of their specialist managerial disciplines and into the true world of directing. The paper demonstrates the importance of continuous learning in reducing organisational uncertainty and risk. It uses the ‘Learning Board’ process and model as the central processor of both strategic and operational learning to create an annual rhythm for the board’s year.