Gsu; Gsu Kit Contents; Figure 12-1 General Gsu - Radwin 2000+ SERIES User Manual

GSU

12.3.1 GSU
The GSU is an outdoor unit consisting of a small size enclosure, a GPS antenna and a PoE
device.
It may be operated through an HSS unit or over Ethernet.
For use over Ethernet, the GSU requires Layer 2 connectivity to the multiple Hub‐Sites that it
is required to synchronize. It synchronizes the transmission timing of these Hub‐Sites to the
same clock source thus eliminating mutual interference. Typically, an IDU‐H/HP is used.
Figure 12‐1: General GSU configuration using both Ethernet and an HSS unit
The GSU receives a synchronization signal from the GPS once per second. It distributes a
RADWIN proprietary synchronization signal to all other ODU units using a proprietary
synchronization signal over Ethernet.
When the GSU doesn't receive a synchronization signal from the GPS for 30 seconds, it moves
automatically to Self‐Generation mode until the GPS recovers.
12.3.2 GSU Kit Contents
The GSU package includes:
RADWIN 2000+ Series User Manual Release 4.2.40 12‐2