RDL-3000
INSTALLATION GUIDELINES
70-00159-01-06
Proprietary Redline Communications © 2012
Page
62
of 65
kune 12, 2012
6.2
Synchronize RDL-3000 Units
Sector controllers deployed at a common site (collocated) can produce inter-sector RF
interference. All sites where two or more RDL-3000 systems are deployed must use the
synchronization feature to minimize potential inter-sector RF interference. This feature
minimizes inter-sector interference by synchronizing the transmit cycles of collocated
RDL-3000 sector controllers.
A GPS receiver is mandatory for each sector controller site where each site is part of a
network of geographically collocated cells that are located close enough to potentially
introduce RF interference.
6.2.1
Wiring the RDL-3000 for Synchronization
Full synchronization of RDL-3000 sector controllers on an installation site can be
achieved only when synchronization cabling is installed between all collocated sector
controllers.
Note: The synchronization wiring is identical for GPS and non GPS installations.
Cables and Connectors
The RDL-3000 PPS ports have TNC / F connectors. The PPS port of all collocated RDL-
3000 units must be interconnected using LMR-195 (or equivalent) coaxial cable
terminated with TNC / M connectors. Use TNC Tee adapters to connect the RDL-3000
units in a daisy-chain configuration.
Figure 53 - Sync - Synchronization Cabling Example - With GPS
Important
: Multiple RDL-3000 units can be synchronized using up to 46 m (~150 ft).of
interconnecting synchronization cable.
