RADWIN2000+SeriesUserManual Release4.2.40 10‐4
UsingMorethanOneHSSUnit
10.2.3UsingMorethanOneHSSUnit
Inalargecollocationsite,severalHSSunitsmaybecascaded(daisy‐chained)subjecttothe
followingconditions:
Condition1:CablingSequence
1. UptonineODUsmaybeconnectedtothefirstHSSunitusingHSSportsSYNC1,SYNC2,
SYNC3,...uptoSYNC9inorderwithoutleavingemptyports.
2. ThenextavailableSYNCportofthefirstHSSunitshouldbeconnectedtoSYNC10
ofthesecondHSSunitasshowninFigure 10‐4.Intheillustration,thenext
availableportonthefirstHSSunitisSYNC6.
3. ThesecondHSSunitmaybefi lledoutwithuptoninemoreODUsinreverseorder.
Thatis,connectSYNC9,SYNC8,SYNC7...asshowninFigure 10‐4.
Figure10‐4:CascadingtwoHSSunits
4. ToaddaafurtherHSSunit:ConnectthenextavailableSYNCportfromthesecond
HSSunitindescendingorder(SYNC5inFigure 10‐4)toSYNC1ofthethirdHSS
unit.
5. ODUsareconnectedtothethirdHSSunitfromSYNC2asshowninFigure 10‐5,in
ascendingorder: