User Manual
4 Hardware Installation
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4.5 Burst-Synchronisation
Burst-synchronization is the coordination process of frequency
hopping tables, receipt, and points of transmitting time for sev-
eral WIMAN networks within the same geographical area.
Burst-synchronization is achieved by both hardware and soft-
ware items. The hardware item is a synchronization cable, which
is only a wire, which connects the X.21-interfaces among them-
selves.
For the X.21 Interface, the synchronization cable is enclosed in
the hybrid cable type 3. This is connected to further radio mo-
dems with additional cables and special T-connectors.
The software section for synchronization consists of the pa-
rameter SyncMode, which is to be entered in the basic configu-
ration of a master or a Slave.
One master radio modem (STAR or LINE) is determined as
synchronization master for all radio modems at that location.
The synchronization master is adjusted as follows:
•
SyncMode = Master
All further master radio modems should be adjusted as follows:
•
SyncMode = Slave
4.6 Extended Point-to-Point Connections
An estendet Point-to-Point connection can be structured by ar-
ranging two WIMAN LINE “back-to-back”. For this applica-
tion, additional hardware is necessary. Please contact your
WIMAN supplier.
For an extended point-to-point connection the parameter
SyncMode has to be set to the base WIMAN LINE configura-
tion.
The example configurations specified below refer to an ex-
tended X.21 Point-to-Point-connection. In this structure, the
WIMAN LINE Slave 1 is coupled to the WIMAN LINE Master
2.