User's Manual

RLX2 Industrial Hotspot Series
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ProSoftTechnology,Inc. Page201of208
February5,2015
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throughputthanASCIImodeforthesamebaudrate;eachmessageistransmittedina
continuousstream(SeealsoASCII,above).
S
Sector Antenna
Anantennatypethatradiatesinonlyaspecificdirection.Multiplesectorantennasare
commonlyusedinpoint‐to‐multipointsituations.
Signal Diversity
Aprocessbywhichtwosmalldipoleantennasareusedtosendandreceive,combining
theirresultsforbettereffect.
Signal Loss
Theamountofsignalstrengththat’slostinantennacable,connectors,andfreespace.
Signallossismeasuredindecibels.Alsoreferredtoasgainloss.
Signal Strength
Thestrengthoftheradiowavesinawirelessnetwork.
Simplex
Acommunications circuitorsystemdesignedtoeithertransmitdataorreceivedata,
butnotboth.Broadcasttelevisionisanexampleofsimplexcommunicationsystem.A
televisionstationsendsaTVsignalbutcannotreceiveresponsesbackfromthe
televisionsetstowhichitistransmitting.TheTVsetscanreceivethesignalfromtheTV
stationbu
tcannottransmitbacktothestation.
Site Survey
Acomprehensivefacilitystudyperformedbynetworkmanagerstoensurethatplanned
servicelevelswillbemetwhenanewwirelessLAN,oradditionalWLANsegmentstoan
existingnetworkaredeployed.Sitesurveysareusuallyperformedbyaradiofrequency
engineerandusedbysystemsintegratorstoidentifytheoptimumplacementofaccess
pointstoens
urethatplannedlevelsofservicearemet.Sitesurveysaresometimes
conductedfollowingthedeploymenttoensurethattheWLANisachievingthe
necessarylevelofcoverage.Sitesurveyscanalsobeusedtodetectrogueaccesspoints.
Spectrum
Arangeofelectromagneticfrequencies.