RADWIN2000UserManual Release2.8.30 12‐5
ODU/HSSUnitConnectionPinout
6. IffurtherODUsarerequired,observetheconventionthatadditionaleven
numberedunitsarepopulatedindescendingorderfromSYNC9andodd
numberedHSSunitsarepopulatedinascendingorderfromSYNC2.
Condition2:TotalHSSCableLength
ThetotalpathoftheHSSsyncpulsemustnotexceed300m.Thisappliesnomatterhowmany
HSSunitsareused.Toillustratethemethodforcalculatingthesyncpulsepathlengthwe
showthreeexamples.Forourpurpose,let:
LmndenotethelengthoftheODU‐HSSunitcableatSYNCnonHSSunitm
HmbethelengthofthecablejoiningHSSunitmtoHSSunitm+1
OneHSSunitwithfivecollocatedODUs
TwocascadedHSSunitsasshowninFigure12‐4
ThreecascadedHSSunitsasshowninFigure12‐5
ODU/HSSUnitConnectionPinout
SeeTableB‐2.
Note
IfanODUisdisconnectedfromanHSSunit,thenallremainingODUsmust
bemovedupordowntomaintaintheco nnectivity.
PathLength L
11
2 L
12
2 L
13
+ 2 L
14
L
15
+++=
PathLength L
11
2 L
12
2 L
13
2 L
14
+
2
+
L
15
+
H
1
2 L
29
2+ L
28
2+ L
27
L
26
+
+
++
=
PathLength L
11
2 L
12
2 L
13
2 L
14
+
2
+
L
15
+
H
1
2 L
29
2+ L
28
2+ L
27
2 L
26
+
H
2
2 L
32
2 L
33
2 L
34
L
35
+++
+
++ +
+
=