Radwin 2000 - Figure 12-3 Hss Sync Signal

RADWIN2000UserManual Release2.8.30 12‐3
UsingaSingleHSSUnit
UsingaSingleHSSUnit
Figure12‐2:HSSWiringschematic
Thewiring,asshowninFigure12‐2isselfexplanatory.TheSyncsignalpathis lessself
evident.IfwesetODU1(onSYNC1)toHSSMaster,thentheSyncsignalpathisasshownin
Figure12‐3.ThesignaltravelsfromODU1toSYNC1,fromSYNC1toSYNC2,fromSYNC2to
ODU2andbackagain.ThebackandforthpathsrepeatforthesecondtofourthODU,from
lefttoright.ThesignalexitstheHSSunitatSYNC5andterminatesinODU5.
ThechoiceoftheODUonSYNC1asHSSmasterisnotmandatory,butisgoodpractice.Iffor
exampleweweretouseODU3asHSSmaster,theSyncsignalpathwouldbeODU3toSYNC
3,thenleftandright toSYNC2andSYNC4.ItwouldthenpropagatetoODUs2and4,
terminatingatbothODUs1and5.
Figure12‐3:HSSsyncsignalpathwithODU1asHSSMaster
UsingMorethanOneHSSUnit
Inalargecollocationsite,severalHSSunitsmaybecascaded(daisy‐chained)subjecttothe
followingconditions: