RADWIN 2000 User Manual Release 2.6.40 10-1
Chapter 10
Hub Site Synchronization
What is Hub Site Synchronization?
When several units are collocated at a common hub site, interference may occur from one
unit to another. RADWIN ODU units support the collocation of more than two units at a cen-
tral site. Like any other RF deployment, the wireless operation is highly dependent on factors
such as available frequencies, the physical spacing between radios, other interfering radios,
and whether WinLink 1000 or RADWIN 2000 units are installed.
The RADWIN Hub Site Synchronization (HSS) method uses a cable connected from the mas-
ter ODU to all collocated ODUs; this cable carries pulses sent to each ODU, which synchronize
their transmission with each other. The pulse synchronization ensures that transmission
occurs at the same time for all collocated units. This also results in all of the hub site units
receiving data at the same time, eliminating the possibility of interference that could result if
some units transmit while other units at the same location receive.
Figure 10-1 illustrates interference caused by non-synchronized collocated units.
Note
HSS does not eliminate the need for careful RF planning to ensure the
design will work as planned. See Chapter 2 of the User Manual (both
WinLink 1000 and RADWIN 2000) for information on installation site survey.
For WinLink 1000 units, Hub Site Synchronization support depends on the
product model.
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