User's Manual

Connecting Third-Party External Antennas Hardware Installation Guide
10-4 Airspan Networks Inc. 02030311-10
10.2. Connecting GPS Antenna to BSDU
The following subsections describe connecting the GPS to a BSDU.
Note: A GPS is required for synchronizing between multiple Base Stations that
implement frequency hopping for wireless communication.
10.2.1. Mounting the GPS
Depending on individual customer requirements and environmental influences there
are several available options for mounting the GPS:
 Pole Mounting:
The GPS may be mounted to a pole similar to that used to mount the BSR (See
Chapter 7, "Mounting the Devices").
 Mounting Plate:
The GPS may be mounted to a wall or roof top structure using a purpose-made
mounting plate supplied with the unit.
 Direct Mounting:
The unit may be mounted directly to a suitable structure that has been provided
with holes suited to the GPS mounting details.
 Magnetic Mounting:
An optional magnetic mounting device is available to allow GPS mounting to a
suitable surface, e.g. vehicle roof or steel building structure. This device is
attached by means of the threaded holes provided in the base of the GPS.
Note: When mounting the GPS on a metal pole that is in physical contact with
the ground, the GPS will not synchronize. To enable synchronization, you need
to isolate the GPS from the pole using isolation material.