发展中国家中继器

ProductFeaturesExcellentRFperformance:3ANprovideswirelessrepeaterswithstate-of-the-artperformancesuchasminimizednoisefigure,timedelayandIMD,excellentlinkbalanceandout-of-bandsuppression. Modulardesign:Modulardesigniseasierforoperatorstomakeupgradeandformaintenance. Monitorandcontrol(M&C):TheinteriorM&Cmoduleisthecoretocontrolthewholerepeaterandimplementsfourfunctions:detection,controlandcommunication,. Perfectquery,statisticandreport:Itcansupportquery,statisticandreportforthehistorydataincludinglog,repeaterdataandquerydataetc. Function:RepeatersupportstheEDGEandhasthefunctionoffrequencyhopping,extendedrangeandsplitband. Item Specification ARFCN DCS1800 Uplink:1740-1744.2MHz Downlink:1835-1839.2MHz Bandwidth 4.2M Maximumoutput 20±2dBm Max.SystemGain 70±2dB GainAdjustableRange/Step ≥30dB/1dB GainAdjustableError Gainadjustablerangeis0 20dB,error≤1dB;≥21dB,error≤1.5dB ALC Whenadding≤10dBatmax.outputlevel,outputvariation≤±2dB, Whenadding>10dB,outputvariation≤±2dBorbeoff. RippleinBand ≤3dB NoiseFigure[Uplink] ≤4dB(maximumgain) VSWR ≤1.5 GroupDelay ≤5.0μs Inter-modulation ≥45dBc SpuriousEmission 9KHz--1GHz:≤-36dBm 1GHz--12.75GHz:≤-30dBm FrequencyStability ≤0.05ppm PowerSupply AC90 270V,47 63Hz Operatingtemperature -20--+60°C RFConnector N-Female,50ohm Protection IP40 Monitoringandalarming Temperature,Powersupply,OutputPoweretc.