Abstract: This application note discusses a design for a phantom antenna power-supply system compatible with theDigital Satellite Equipment Control (DiSEqC) communication standard, using the MAX16948 automotive dual, highvoltageLDO/switch. The presented application circuit provides a remote antenna power supply and also enables onewaycommunication from the radio head unit to the remote antenna. This system architecture offers flexibility inDiSEqC tone-burst frequency choice (100Hz to 30kHz), enabling users the ability to select the best frequency for theirapplication.
標(biāo)簽： 數(shù)字衛(wèi)星 控制 兼容 供電系統(tǒng)設(shè)計(jì)
上傳時(shí)間： 2013-11-17
上傳用戶：fnhhs
Abstract: This article describes the Antenna Interface Standards Group (AISG) standard in telecommunications and details itshardware implementation. It explains how a fully integrated transceiver such as the MAX9947 can help reduce space and cost, andsolve bus arbitrations in base-station tower Equipment.
標(biāo)簽： AISG 硬件 分立收發(fā)器 控制系統(tǒng)
上傳時(shí)間： 2014-12-30
上傳用戶：wangchong
AI :Auto-Insertion 自動(dòng)插件 AQL :acceptable quality level 允收水準(zhǔn) ATE :automatic test Equipment 自動(dòng)測(cè)試 ATM :atmosphere 氣壓 BGA :ball grid array 球形矩陣
標(biāo)簽： SMT 術(shù)語(yǔ) 中英文 對(duì)比
上傳時(shí)間： 2013-11-20
上傳用戶：haoxiyizhong
This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation Equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) Equipment. This standard was developed in the mid-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 圖Figure 1. Local Safety System
標(biāo)簽： FPGA 安全系統(tǒng)
上傳時(shí)間： 2013-11-14
上傳用戶：zoudejile
Accurate measurement of the third order intercept pointfor low distortion IC products such as the LT5514 requirescertain precautions to be observed in the test setup andtesting procedure. The LT5514 linearity performance ishigh enough to push the test Equipment and test set-up totheir limits. A method for accurate measurement of thirdorder intermodulation products, IM3, with standard testEquipment is outlined below.It is also important to correctly interpret the LT5514specification with respect to ROUT, and the impact ofdemo-board transmission-line termination loss whenevaluating the linearity performance, as explained in theLT5514 Datasheet and in Note 1 of this document.
標(biāo)簽： 5514 LT 三階互調(diào) 精確測(cè)量
上傳時(shí)間： 2013-11-14
上傳用戶：l254587896
Kismet is an 802.11b network sniffer and network dissector. It is capable of sniffing using most wireless cards, automatic network IP block detection via UDP, ARP, and DHCP packets, Cisco Equipment lists via Cisco Discovery Protocol, weak cryptographic packet logging, and Ethereal and tcpdump compatible packet dump files. It also includes the ability to plot detected networks and estimated network ranges on downloaded maps or user supplied image files. Kismet是一個(gè)針對(duì)IEEE802.11b無(wú)線局域網(wǎng)的嗅探和包分析器，支持大多數(shù)無(wú)線網(wǎng)卡，支持自動(dòng)檢測(cè)UDP、ARP和DHCP的數(shù)據(jù)包，支持通過(guò)CDP協(xié)議檢測(cè)思科網(wǎng)絡(luò)設(shè)備，支持加密數(shù)據(jù)包記錄，采用與Ethereal和Tcpdump兼容的的數(shù)據(jù)包記錄文件，支持通過(guò)用戶提供地圖來(lái)檢測(cè)和評(píng)估無(wú)線網(wǎng)絡(luò)范圍。
標(biāo)簽： network dissector sniffing capable
上傳時(shí)間： 2014-11-26
上傳用戶：wweqas
物流分析工具包。Facility location: Continuous minisum facility location, alternate location-allocation (ALA) procedure, discrete uncapacitated facility location Vehicle routing: VRP, VRP with time windows, traveling salesman problem (TSP) Networks: Shortest path, min cost network flow, minimum spanning tree problems Geocoding: U.S. city or ZIP code to longitude and latitude, longitude and latitude to nearest city, Mercator projection plotting Layout: Steepest descent pairwise interchange (SDPI) heuristic for QAP Material handling: Equipment selection General purpose: Linear programming using the revised simplex method, mixed-integer linear programming (MILP) branch and bound procedure Data: U.S. cities with populations of at least 10,000, U.S. highway network (Oak Ridge National Highway Network), U.S. 3- and 5-digit ZIP codes
標(biāo)簽： location location-allocation Continuous alternate
上傳時(shí)間： 2015-05-17
上傳用戶：kikye
3rd Generation Partnership Project Specification of the SIM Application Toolkit for the Subscriber Identity Module - Mobile Equipment (SIM - ME) interface (Release 4)
標(biāo)簽： Specification Application Partnership Generation
上傳時(shí)間： 2015-09-17
上傳用戶：caozhizhi
TION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test Equipment and can discharge without detection. WARNING! Although the AD7008 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
標(biāo)簽： Electrostatic electrostatic discharge sensitive
上傳時(shí)間： 2014-01-12
上傳用戶：2467478207
Telecontrol equipent and systems Part5:Transmission protocols Section 103 Companion standard for the information interface of protection Equipment
標(biāo)簽： Transmission Telecontrol Companion protocols
上傳時(shí)間： 2016-01-24
上傳用戶：huannan88
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