产品名称：BLACKBOXME659A-M-R2型号：ME659A-M-R2品牌：BLACKBOX描述：Speedsupto38.4kbps.Distancesupto12miles(19.3km).Asyncorsyncoperation,point-to-pointormultipoint.规格：Nonpowered,soyoucaninstallitwhereit'smostconvenient.SupportsRJ-45,RJ-11,andterminalblockconnecti***.Internal,external,orreceiveloopbackclockinginsyncmode.V.54loopbackandV.52BERTpatterngenerator.Built-inLEDsenableyoutomonitortestmodeoperation.Transformerisolationandsurgeprotectionguardagainstdataloss.Automaticlineequalization.TheUniversalSync/AsyncShort-HaulModemgivesyoutheflexibilitytouseitinalmostanyUTPorSTPapplication.It'snon-poweredtoyoucanuseitalmostanywherewithoutworryingaboutpower.Itprovidesdataratesupto38.4Kbpsanddistancesupto12miles(19.3km.).Insynchronousmode,theSHMsupportsinternal,external,orreceiveloopbackclocking.TheSHMincorporatestwoV.54andtwoV.52BERtestmodes,whichcanbeactivatedviatheRS-232interface.Monitortestmodeoperationviathebuilt-inLEDs.TheSHMalsohastransformerisolationandsurgeprotectiontoguardagainstdataloss.It'sdesignedtoplugdirectlyintotheRS-232interface.TheUTPorSTPcableisconnectedviaRJ-11,RJ-45,oraterminalblock.NOTE:Mustbeusedinpairs.)