泰克推出MDO4000C混合域示波器，扩军集成仪器产品组合

2015年12月09日,泰克科技公司日前宣布,推出MDO4000C系列混合域示波器,其可以在一台仪器中配置最多6台仪器,包括全功能频谱分析仪。通过采用泰克提供的性能最高的六合一示波器,在需求变化或预算允许时,工程师可以随时升级MDO4000C仪器,迎接最苛刻的挑战,增加所需的功能。     

The effect of Ti:W barrier metal on characteristics of palladium-silicide Schottky barrier diodes

The values of diode-quality factor and reverse-current leakage of Au/Pd/Ti:W/Pd₂Si/nSi unguarded Schottky barrier diodes are much higher than expected from silicide/silicon junction-radius induced highfield effects. Experimental Ti-, W-, and Ti:W-MIS structures were built and tested to show that Ti is responsible for the formation of a parasitic Ti-MIS structure around the unguarded-diode perimeter. This parasitic structure is responsible for excessive current leakage and also for an additional unguarded-diode degradation induced by annealing at 400 °C.     

The electroquasistatics of the capacitive touch panel

The capacitive touch panel, a high-resolution position sensor intended for computer displays, must be safe and inexpensive and must sense position accurately in spite of electrical noise, dirt, or direct electrostatic discharge. The implementation discussed uses a quasi-static electric field, applied to a semiconducting coating on the panel surface. A touch draws current from the surface. This current can be used to compute position. If the computation is performed properly, the computed position is independent of touch current and panel coating resistivity. The electroquasistatic basis for position measurement with a capacitive touch panel and a system to implement it are described     

Integrating tester pin electronics

A 10-V pin electronics driver that can output signals with low distortion and fast risetimes for both narrow and wide voltage swings is described. The features combine to eliminate the need for dual drivers, pin cards, or test heads, which simplifies the testing of mixed-technology devices or modules. A high-voltages process module has been added to a standard 1.5-μm digital CMOS process, which allows the driver to be in the same silicon as the timing and formatting circuitry. Design and calibration techniques that overcome the limitations of the high-voltage CMOS process are examined     

Breaking away from the conventional 'usability lab': the Customer-Centered Design Group at Tektronix, Inc.

The conventional usability lab is primarily responsible for testing prototypes and products to determine if customers will accept a new design. Often this testing comes too late in the development cycle to allow major design or product changes to occur. In the Customer-Centered Design Group at Tektronix Labs, the usability lab is a small part of our group's involvement in the entire design life cycle of a Tektronix product. We work with design groups to bring the benefits of a usability lab to all phases of design, beginning with understanding our customer's current system and work processes to assessing the competitor's strengths and weaknesses to simulating and evaluating design alternatives. Our 'lab' is often on the road; meeting with customers where they work, working with design teams to simulate and prototype designs, and evaluating designs with our customers. To keep in touch with customers and to keep product development focused, we feel a usability group must break down the barriers inherent in a conventional testing suite. By breaking these barriers we can better determine what customers need and how these needs are addressed throughout the entire product life cycle.     

Fast recovery equalization techniques for DTV signals

Blind equalizers do not require any training sequence for the initial startup period but rather perform equalization blindly on the data directly. In this paper, a general approach for designing such equalizers for 8-VSB transmission systems is presented. The candidate algorithms considered here include Godard's algorithm (Godard 1980), Sato's algorithm (Sato 1975), the G-pseudo error algorithm using Sato's function and the G-pseudo error algorithm using Godard's function. This paper analyzes these algorithms for the 8-VSB transmission format and recommends the most suitable algorithm. The performance comparison parameters include MSE, convergence characteristics, computational load and accuracy of estimating the channel     

Vector characterization of photodetectors, photoreceivers, andoptical pulse sources by time-domain pulse response measurements

Deconvolution of measurement system effects from pulse response measurements is demonstrated to yield reproducible, accurate characterization of the impulse response (and vector frequency response) of a photodetector or photoreceiver, as well as the intensity waveform of an optical pulse. Calibration is based on a <3-ps FWHM (full width at half maximum) optical pulse and a 50-GHz 3-dB bandwidth electrical sampling system. Vector characterization of a photodetector/photoreceiver to >40 GHz and an optical pulse source to >30 GHz are demonstrated. Calibration and effects of noise are discussed     

Testing Multimedia Transmission Systems

Digital television and the convergence of television and telecommunications challenges the television engineer to develop new test methods and new ways of using older methods. Supporting multimedia capabilities makes compressed data transmission an important issue. This article outlines a layered model for systems and testing analogous to the OSI model for communications systems and discusses specific test methods for analysis and generation     

使用DMM7510触屏数采万用表进行物联网智能设备低功耗测试

物联网(Io T)的未来就是把大量嵌入式设备利用局部网络或互联网连接起来,这些器件通常称为物联网智能设备和传感器。大量的传感器节点构成了一个无线传感器网络,这些传感器节点安装在关键的区域中,每个传感器节点都能够传感信息,实现无线通信。