User's Manual Part 2

BreezeCOMPACT System Manual
Chapter 2 - BreezeCOMPACT InstallationGPS Installation
Chapter 2 - BreezeCOMPACT Installation GPS Installation
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2.6 GPS Installation
GPSs are used to synchronize the air link frames of Intra-site and Inter-site located sectors to ensure that
in all sectors the air frame starts at the same time, and that all sectors switch from transmit (downlink) to
receive (uplink) at the same time. This synchronization is necessary to prevent Intra-site and Inter-site
sectors interference and saturation (assuming that all sectors are operating with the same frame size and
with the same DL/UL ratio).
Usually the GPS is installed on the top of the tower or on the pole. However it can be installed on the
carriage with a special mounting kit.
Make sure to position the GPS such that there is no obstacle (buildings, antennas, chimney, large trees,
etc.) casting a shadow over the GPS antenna. The GPS antenna should have 360° open sky with no
obstacles.
2.6.1 Package Content
 GPS receiver +antenna attached to a mounting bracket for pole mount
 Optional: GPS bracket kit for mounting on an attached antenna carriage, including
» GPS Carriage bracket
» Locking bracket
» Screws, washers, spring washers
 Metal Bands (for pole mounting on poles up to 4”)
 GPS Quick installation guide
2.6.2 Additional Installation Requirements
 Cable (GPS to BTS) - Shielded Cat.5E Ethernet cable, outdoor grade, up to 100m
 A grounding cable with appropriate terminations for connecting the indoor unit's ground terminal to
the rack or to a ground connection.
 Installation tools
2.6.3 Installing the GPS
Install the GPS either on the pole using metal bands, or on the carriage using the special mounting
bracket.
CAUTION
Do not use the hook for lifting the assembly when the GPS is installed on the carriage. This may damage
the GPS. Tie the carriage on both sides and carefully lift it up the pole.