Radwin 2000+ SERIES - Transmission Phase Shift

RADWIN2000+SeriesUserManual Release4.2.40 12‐9
TransmissionPhaseShift
12.4.2TransmissionPhaseShift
InthecaseshowninFigure 12‐5 above,RT‐A(HBS)A1transmitsandreceivesoppositeRT‐
B(HSU)B1.So,whenRT‐A(HBS)A1transmits,RT‐B(HSU)B1mustreceive,andvice‐versa.The
aboveRadioFramePatternwillthenappearasfollows:
However,RT‐A(HBS)B1isco‐locatedwithRT‐B(HSU)B1.Ascanbeseen,thiswillcause
interferencebetweentheseco‐locatedunits.
Topreventthis,RT‐A(HBS)B1
1
musthaveitstransmissionphaseshifted.Thatis,the
transmissionandreceivetimesofRT‐A(HBS)B1mustbereversed,asshown:
Asaresult,theradioframepatternofRT‐A(HBS)B1issynchronizedwiththatofRT‐B(HSU)B1,
andthereisnointerferencebetweenthesetwounits.ConfiguringGHSSwithanInternalGPS
UnitbelowdescribeshowtoconfiguretheRT‐A(HBS)forthis.
1. AnotheroptionistoshiftthetransmissionphaseofHBSA1insteadofHBSB1,butthatrequiresshiftingthe
phasesof*all*HBSunitsatSiteA1,whichismoretime‐consuming.