产品名称：BLACKBOXME840A-S型号：ME840A-S品牌：BLACKBOX描述：ExtremetolerancetoEMI/RFI!FrequencyShiftCarrieroperatesabovemostindustrialnoise.Totallytransparenttodata.Tran***itsfull-duplexupto3.8miles(6.1km)atspeedsupto9600bps.规格：Point-to-pointandmultipointoperation.OptionalRS-485andRS-422modules***ailable(see"RelatedProducts"inpreviouswindow).Ifyourindustrialworkenvironmentisnoisy,youcansquelchtheinterferencewiththeBLACKBOX?Short-HaulModem–FSK(SHM–FSK).Tran***itRS-232datareliablyinfactoryorotherEMI/RFI-he***yareaswiththeBLACKBOX?Short-HaulModem–FSK(SHM–FSK).Thisshort-haulmodemfeaturesFrequencyShift-Keyoperation,whichprovideshighimmunitytonoiseandinterference,andit’stransparenttodataandprotocol.AdjustyourSHM-FSKtochanginglineconditi***.Modulatebetween100and156.5KHztosendsignalsaboveharshindustrialnoise.TheSHM–FSKalsotran***itsfartherthanmostshort-haulmodems—upto3.8miles(6.1km)eitherhalf-orfull-duplexat9600bps.Forinterfacingwith2-wireRS-485or4-wireRS-422lines,orderoneoftheoptionalmodules***ailable(see"RelatedProducts"inpreviousscreen).Thisproductworkswith:2-WireRS-485Module(MD3317)4-WireRS-422Module(MD3318)StandardRS-232Low-NoiseCable,25-Conductor,Male/Male(ECM25T,ECM25C)ATModemCable,Premium,DB9Female/DB25Male,9-Conductor,24AWG(EVMTBMC,EVMBMC)Questi***?ContactourFREETechSupport.)