标签: standards

DESIGNFORTESTSTANDARDS

Safetystandardsforphotocouplers

SelectableIOStandardsinArriaGXDevices……

PCB焊盘设计……

vhdl代码规范.pdfPRINTEDVERSIONSAREUNCONTROLLEDEXCEPTWHENSTAMPED"CONTROLLEDCOPY"INREDSemiconductorReuseStandardSRS07HDLV2.0VerilogHDLCodingMotorolareservestherighttomakechangeswithoutfurthernoticetoanyproductshereintoimprovereliability,functionordesign.Motoroladoesnotassumeanyliabilityarisingoutoftheapplicationoruseofanyproductorcircuitdescribedherein;neitherdoesitconveyanylicenseunderitspatentrightsnortherightsofothers.Motorolaproductsarenotdesigned,intended,orauthorizedforuseascomponentsinsystemsintendedforsurgic……

CycloneII_器件手册……

SelectableIOStandardsinCycloneIIDevices……

UsingSelectableIOStandardsinCycloneDevices……

Abstract:AniButtonisachiphousedinastainlesssteelenclosure.Tokeepthecostofaccesslow,theelectricalinterfaceisreducedtoanabsoluteminimum,i.e.,onedatalineplusground(alsocalled1-Wire®).Theenergyneededforcommunicationis"stolen"fromthedataline("parasiticpower").……

摘要：许多工业和医学应用需要±1°C甚至更高精度的温度测量，并且成本合理，可覆盖宽温范围(-270°C至+1750°C)，这些系统往往还要求低功耗性能。经过正确选择和标准化处理，利用高分辨率ADC数据采集系统(DAS)和新型热电偶，能够覆盖这一温度范围，即使在恶劣的工业环境下，亦可确保精确测量。利用先进的热电偶和高分辨率Σ-ΔADC实现高精度温度测量JosephShtargot,应用工程师SohailMirza,应用经理Mar04,2012摘要：许多工业和医学应用需要±1°C甚至更高精度的温度测量，并且成本合理，可覆盖宽温范围(-270°C至+1750°C)，这些系统往往还要求低功耗性能。经过正确选择和标准化处理，利用高分辨率ADC数据采集系统(DAS)和新型热电偶，能够覆盖这一温度范围，即使在恶劣的工业环境下，亦可确保精确测量。类似文章于2011年6月22日发表在EETimes杂志。引言热电偶广泛用于各种温度检测。热电偶设计的最新进展，以及新标准和算法的出现，大大扩展了工作温度范围和精度。目前，温度检测可以在-270°C至+1750°C宽范围内达到±0.1°C的精度。为充分发挥新型热电偶能力，需要高分辨率热电偶温度测量系统。能够分辨极小电压的低噪声、24位、Σ-Δ模/数转换器(ADC)非常适合这项任务。数据采集系统(DAS)采用24位ADC评估(EV)板，热电偶能够在很宽的温度范围内实现温度测量。热电偶、铂电阻温度检测器(PRTD)和ADC相结合，可构成高性能温度测量系统。采用低成本、低功耗ADC的DAS系统，可理想满足便携式检测的应用需求。热电偶入门托马斯塞贝克在1822年发现了热电偶原理。热电偶是一种简单的温度测量装置，由两种不同金属(金属1和金属2)组成(图1)。塞贝克发现不同的金属将产生不同的、与温度梯度有关的电势。如果这些金属焊接在一起构成温度传感器结(TJUNC，也称为温度结)，另一端未连接的差分结(TCOLD，作为恒温参考端)上将呈现出电压，VOUT，该电压与焊接结的温度成正比。从而使热电偶输出随温度变化的电压/电荷，无需任……

摘要：许多工业和医学应用需要±1°C甚至更高精度的温度测量，并且成本合理，可覆盖宽温范围(-270°C至+1750°C)，这些系统往往还要求低功耗性能。经过正确选择和标准化处理，利用高分辨率ADC数据采集系统(DAS)和新型热电偶，能够覆盖这一温度范围，即使在恶劣的工业环境下，亦可确保精确测量。利用先进的热电偶和高分辨率Σ-ΔADC实现高精度温度测量JosephShtargot,应用工程师SohailMirza,应用经理Mar04,2012摘要：许多工业和医学应用需要±1°C甚至更高精度的温度测量，并且成本合理，可覆盖宽温范围(-270°C至+1750°C)，这些系统往往还要求低功耗性能。经过正确选择和标准化处理，利用高分辨率ADC数据采集系统(DAS)和新型热电偶，能够覆盖这一温度范围，即使在恶劣的工业环境下，亦可确保精确测量。类似文章于2011年6月22日发表在EETimes杂志。引言热电偶广泛用于各种温度检测。热电偶设计的最新进展，以及新标准和算法的出现，大大扩展了工作温度范围和精度。目前，温度检测可以在-270°C至+1750°C宽范围内达到±0.1°C的精度。为充分发挥新型热电偶能力，需要高分辨率热电偶温度测量系统。能够分辨极小电压的低噪声、24位、Σ-Δ模/数转换器(ADC)非常适合这项任务。数据采集系统(DAS)采用24位ADC评估(EV)板，热电偶能够在很宽的温度范围内实现温度测量。热电偶、铂电阻温度检测器(PRTD)和ADC相结合，可构成高性能温度测量系统。采用低成本、低功耗ADC的DAS系统，可理想满足便携式检测的应用需求。热电偶入门托马斯塞贝克在1822年发现了热电偶原理。热电偶是一种简单的温度测量装置，由两种不同金属(金属1和金属2)组成(图1)。塞贝克发现不同的金属将产生不同的、与温度梯度有关的电势。如果这些金属焊接在一起构成温度传感器结(TJUNC，也称为温度结)，另一端未连接的差分结(TCOLD，作为恒温参考端)上将呈现出电压，VOUT，该电压与焊接结的温度成正比。从而使热电偶输出随温度变化的电压/电荷，无需任……

ThisapplicationnotedescribesusingdifferentialI/OstandardsinMAXVdevices.High-speeddifferentialI/Ostandardshavebecomepopularinhigh-speedinterfacesbecauseoftheirsignificantadvantagesoverthesingle-endedI/Ostandards.TheAlteraMAXVdevicefamilysupportstheemulatedLVDSoutput(LVDS_E_3R)andemulatedreducedswingdifferentialsignaling(RSDS)output(RSDS_E_3R)I/Ostandardsusingtwosingle-endedoutputsandexternalresistornetworks,withthesecondoutputprogrammedasaninvertedoutput.UsingDifferentialI/OStandardsinMAXVDevicesAN-636-1.0ApplicationNoteThisapplicationnotedescribesusingdifferentialI/OstandardsinMAXVdevices.High-speeddifferentialI/Ostandardshavebecomepopularinhigh-speedinterfacesbecauseoftheirsignificantadvantagesoverthesingle-endedI/Ostandards.TheAlteraMAXVdevicefamilysupportstheemulatedLVDSoutput(……

摘要：本应用笔记讨论接口差分HSTL（高速收发器逻辑）输出到PECL（正射极耦合逻辑）输入条件。Maxim>AppNotes>COMMUNICATIONSCIRCUITSKeywords:HSTL,PECL,highspeed,interfacestandards,differentialHSTL,highspeedtransceiverlogic,JedecSep27,2002standard,Jedecstd,differentialAPPLICATIONNOTE1752ApplyingHSTLSignalstoPECLInputDevicesAbstract:ThisapplicationnotediscussestheconditionsforinterfacingdifferentialHSTL(High-SpeedTransceiverLogic)outputstoPECL(PositiveEmitterCoupledLogic)inputs.PECLandHSTLaretwoofthehigh-speedinterfacestandardsincommonuse.PECL(positivesupplyreferredECL)isanolderstandardthanHSTLandwasdevelopedasahigherspeedalternativetotheTTLlogicstandards.HSTLwasdefinedasaninterfacestandardfordigitalintegratedcircuits.Thetwostandardsarenotdirectlycompatible.SomePE……

我們公司內部資料--SMT貼片標準(英文版,需1RD幣),SMTstandards(enghish)……

Harmonizedstandards25.9.2007ENOfficialJournaloftheEuropeanUnionC225/1IV(Notices)NOTICESFROMMEMBERSTATESCommissioncommunicationintheframeworkoftheimplementationofDirective2004/108/ECoftheEuropeanParliamentandoftheCouncilof15December2004ontheapproximationofthelawsoftheMemberStatesrelatingtoelectromagneticcompatibilityandrepealingDirective89/336/EEC(TextwithEEArelevance)(Publicationoftitlesandreferencesofharmonisedstandardsunderthedirective)(2007/C225/01)Europeanstandardisationorganisation(1)Referenceandtitleofthestandard(andreferencedocument)ReferenceofthesupersededstandardDateofcessationofpresumptionofconformityofthesupersededstandardNote1CenelecEN50065-1:2001Signallingonlow-voltageelect……

SoftwareRadioImplementationofShortrangeWirelessStandardsforSensorNetworkingNESL|UCLACENSSoftwareRadioImplementationofShortrangeWirelessStandardsforSensorNetworkingThomasSchmid,ManiB.Srivastava{thomas.schmid,mbs}@ucla.edu1NESL|UCLACENSOutlineIntroductiontoSoftwareDenedRadioWhatisGNURadioTheUniversalSoftwareRadioPeripheral(USRP)LatencymeasurementsoftheUSRPIEEE802.15.4anditsimplementationMica2FSKanditsimplementationRoundTripTimemeasurementsanditsimplicationsontheMACLayerSoftwareRadioImplementationofShortrangeWirelessStandardsforSensorNetworking2NESL|UCLACENSWhatisSoftwareDenedRadio?Bytes/PacketsRFTranceiverConventionalSystemADCIdealSDRSystemRFFrontendADCFPGAWhatoneusuallyhasSoftwareRadioImplementationofShortrangeWirelessStandar……

ThesummaryofSafetyStandardsandRef_Info标准使用之分类标准编号UL1950/IEC(EN)60950CSAC22.2No.950AS/NZS3260/GB4943UL1310/（CAN/CSAC22.2No.223）UL1411标准内容信息产品SafetyofInformationTechnologyEquipment低输出能量的电源供应器Class2PowerUnits使用范围本标准适用于额定电压不超过600V的信息技术设备.手持式设备额定电压不超过250V.应用于这样的AC电路：输入不超过660W，直插式额定15A，120或240V，电源线式15或20A，150V以下对地电压。不含起动机充电器，音响用，医用，玩具用，域连接用（UL1585）。次级输出

DigitalVideoStandardsHDigitalVideoStandardsAuthors:TrevorDyck/PeterMaStefanPracht/DragosRuiuDiscoverthelatesttechniquesandproductsforreal-worldvideotestingCopyrightHewlett-PackardCompany199716DigitalVideoStandardsDigitalStandardsBodiesTheworldofdigitalvideostandardsisacomplicatedone,withmanydifferentstandardsgroupsactivelyproducingsometimesoverlappingspecifications.Manyaspectsandapplicationsofdigitalvideoarenowbeingconsideredaseligibleforstandardization.Otheraspectsofthetechnologyhaven’tbeenstandardized,yetcommonindustrypracticesareemerging.Itwillbemanyyearsstilluntilthespecificationsfordigitalvideofullystabilize.Withthatsaid,however,thereisstillawiderangeofapplicablestandardstohelpguideimpl……

TelevisionStandardsTelevisionStandards-formatsandtechniquesInoppositetothecommonsimplifiedrepresentationoftheNTSCstandardintheworldwidewebthissummaryshouldprovideanessentiallycorrectoverviewofthedifferentrefreshratesofPALandNTSC.AtthispointitisimportanttoconsiderthetransferfromfilmmaterialtothestandardsofPALandNTSC.FurthermorewehavetomindthevideoformatMPEG-2,whichisusedforDVDs.[pic][pic]index|WorldwideTVSystems|DVDRegionCodes|FAQ |1.FILM||5.2MPEG-2,T_F_F/R_F_F||2.1NTSC| |FlagsandFPSFlag||2.2PAL||5.3VideoTimeCode||2.3SECAM| .|Counters||3.1Interlacing||6.DropFrame/NonDrop|……