Installation Manual

38 Revision 00b-DRAFT August 23, 2006
Macro Base Station Installation Procedures (NPM-2500)
 To install the main and diversity antennas
1 Verify that you have the right type of antennas, both in terms of frequency and beamwidth.
2 Run the antenna cable from the racks to the intended location of each antenna. Consult your SOMA
Networks technical representative for antenna cable specifics.
NOTE: Ensure that the cable remains clear of any sources of potential interference,
such as transmitting equipment or power lines.
3 Attach each antenna to the tower or building using the required mounting hardware.
4 Orient each antenna to the correct azimuth (direction) and tilt. Consult your SOMA Networks technical
representative for information.
5 Tighten and secure each antenna.
6 Connect the antenna to the radio module:
i Install each TT-LNA within 1.5 m (3 feet) of its antenna. The TMAs should be installed as close
to the antennas as possible in order to ensure optimal performance. Consult the documentation
that ships with the TT-LNA for the correct mounting procedures.
ii Connect the ANT port on each TT-LNA to its antenna using a suitable coaxial cable. Properly
torque and weatherproof each connector.
iii Install each CIN (also called a bias-T) inside the base station equipment room in accordance
with its documentation. Ensure that the DC port on the CIN (SMA connector) is facing towards
the base station. Torque and weatherproof each connector.
iv Connect the base station port on each bias tee to the ANT port on each radio module. The ANT
port is located on the rear side of the radio module.
v Connect the CIN port (also called Vout) on the rear side of the radio module to the DC port on
the bias tee.
!
CAUTION: Failure to orient the antennas correctly may seriously affect the
performance of your wireless network.
!
CAUTION: Do not over-tighten connectors. Overtightening the connectors may
damage the cable and degrade the RF signal.
!
CAUTION: Do not over-tighten connectors. Overtightening the connectors may
damage the cable and degrade the RF signal.