Radwin 2000+ SERIES, User Manual

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RADWIN 2000+ Series User Manual Release 4.2.40 9 ‐ 4
HSS Types
Although the master unit can be defined as one of the co ‐ located radio units, a GPS signal can
also furnish a synchronization signal. In this case, all the co ‐ located units are clients, and the
“master” is the GPS signal source.
9.3.2 HSS Types
RADWIN offers several types of HSS:
Serial HSS
The RADWIN Serial Hub Site Synchronization (SHSS) method uses an external HSS unit
that is connected between the HSS master radio unit to all collocated radio units; this
cable carries the synchronization pulses sent to each radio unit, which synchronize
their transmission with each other. SHSS is covered in Serial Hub Site Synchronization .
SHSS can be used with the RADWIN 2000 C+ and RADWIN 2000 D+ only.
Ethernet HSS
The Ethernet HSS (HSSoE) method connects the co ‐ located radio units via an ethernet
connection. One co ‐ located unit is defined as the HSS master, and it sends its synchro ‐
nization pulses to the HSS clients via the ethernet connection. HSSoE is covered in Hub
Site Synchronization over Ethernet .
GPS HSS
The GHSS method uses a GPS signal as the master, and all co ‐ located radio units are
defined as clients. For the RADWIN 2000 A+, RADWIN 2000 C+, and RADWIN 2000 D+,
an additional GPS unit is required to receive the GPS signals. For the RADWIN 2000i,
no such unit is required as it has an internal GPS capability. GHSS is covered in GPS
Hub Site Synchronization .