User's Manual

PTP 250 User Guide Installing connectorized antennas
phn-2182_002v000
May 2011
5-9
Installing connectorized antennas
If the ODU is connectorized, perform this task to install separate antenna(s).
Preparing for connectorized installations
Before proceeding with the installation, perform the following checks:
• Check that the correct components are available, as described in Installation
i
nventories on page 4-2.
• Check
that the selected antenna conforms to the applicable regulatory
restrictions, as described in Antenna specifications on
page 4-14 and Compliance
with radio regulations on page 4-27.
• Check
that the correct tools are available. The tools required for mounting the
antennas are specific to the antenna chosen. Refer to the antenna manufacturer’s
instructions.
Mounting and connecting antennas
To mount and connect the antenna(s), proceed as follows:
1
Mount the antenna(s) according to manufacturer’s instructions. When using
separate antennas to achieve spatial diversity, mount one with Horizontal
polarization and the other with Vertical polarization.
2
Connect the ODU to the antenna with cables of type LMR100, LMR200,
LMR300, LMR400 or LMR600. Connect the ODU ‘V’ interface to the vertical
polarization antenna and connect the ODU ‘H interface to the horizontal
polarization antenna (Figure 1-5).
NOTE
When using separate antennas to achieve spatial diversity, the antenna
cables will be disconnected from the ODU during the alignment
procedure. Therefore, do not weatherproof the ODU joints until antenna
alignment is complete.
3
Where the ODU is mounted indoors, install lightning arrestors at the
building entry point (Figure 5-2). Assem
ble the Polyphaser LSXL-ME or
LSXL as shown in Figure 5-3. Conne
ct the lighting arrestors to the master
ground bar of the building.