RADWIN5000HPMPUserManual Release3.5.70 14‐3
UsingaSingleHSSUnit
UsingaSingleHSSUnit
Figure14‐2:HSSWiringschematic
Thewiring,asshowninFigure 14‐2isselfexplanatory.TheSyncsignalpathislessself
evident.IfwesetODU1(onSYNC1)toHSSMaster,thentheSyncsignalpathisasshownin
Figure 14‐3.Thesignaltra v elsfromODU1toSYNC1,fromSYNC1toSYNC2,fromSYNC2to
ODU2andbackagain.ThebackandforthpathsrepeatforthesecondtofourthODU,from
lefttoright.ThesignalexitstheHSSunitatSYNC5andterminatesinODU5.
ThechoiceoftheODUonSYNC1asHSSmasterisnotmandatory,butisgoodpractice.Iffor
exampleweweretouseODU3asHSSmaster,theSyncsignalpathwouldbeODU3toSYNC
3,thenleftandright toSYNC2andSYNC4.ItwouldthenpropagatetoODUs2and4,
terminatingatbothODUs1and5.
Figure14‐3:HSSsyncsignalpathwithODU1asHSSMaster
UsingMorethanOneHSSUnit
Inalargecollocationsite,severalHSSunitsmaybecascaded(daisy‐chained) subjecttothe
followingconditions: