User's Manual

RLX2 Industrial Hotspot Series
ProSoftTechnology,Inc. Page197of208
February5,2015
MACtable,onlythe802.11radiosthathavehadtheirMACaddressesaddedtothe
network’sMACtableareabletogetonthenetwork.
Master device
DevicethatisconnectedtotheMasterradio.
Mbps
Megabitspersecond,ormillionsofbitspersecond.Ameasureofbandwidth.
Megahertz
Ameasureofelectromagneticwavefrequencyequaltoonemillionhertz.Often
abbreviatedasMHzandusedtospecifytheradiofrequencyusedbywirelessdevices.
MIC
MessageIntegrityCheck.OneoftheelementsaddedtotheTKIPstandard.A"signature"
isaddedbyeachradiooneachpacketittransmits.Thesignatureisbasedonthedatain
thepacket,a64bitvalue(key)andtheMACaddressofthesender.TheMICallowsthe
receivingradiotoverify(c
heck)thatthedataisnotforged.
MIMO
MultipleInputMultipleOutputreferstousingmultipleantennasinaWiFideviceto
improveperformanceandthroughput.MIMOtechnologytakesadvantageofa
characteristiccalledmultipath,whichoccurswhenaradiotransmissionstartsoutat
PointAandthereflectsofforpassesthroughsurfacesorobjectsbeforearriving,via
multi
plepaths,atPointB.MIMOtechnologyusesmultipleantennastocollectand
organizesignalsarrivingviathesepaths.
Modbus
TheModbusprotocolprovidestheinternalstandardthattheMODICON
®
controllersuse
forparsingmessages.DuringcommunicationsonaModbusnetwork,theprotocol
determineshoweachcontrollerwillknowitsdeviceaddress,recognizeamessage
addressedtoit,determinethekindofactiontobetaken,andextractanydataorother
informationcontainedinthemessage.Ifareplyisre
quired,thecontrollerwillconstruct
thereplymessageandsenditusingModbusprotocol.
Modem
StandsforMODulatorDEModulator,adevicethatconvertsdigitalsignalstoanalog
signalsandviceversa.Analogsignalscanbetransmittedovercommunicationslinks
suchastelephonelines.