Motorola PTP 500 User's Guide Page 329

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PTP 300 and PTP 500 Series User Guide Task 10: Aligning antennas
phn-1115_006v000
Sep 2010
6-47
Aligning separate antennas for spatial diversity
If a connectorized ODU is installed at either site with two separate antennas for spatial
diversity, proceed as follows:
Procedure 6-17 Aligning spatial diversity antennas
1
Connect the horizontal polarization antenna to the ODU, disconnect the
vertical polarization antenna, then perform Aligning antennas on pa
ge
6-45.
2
Connect the vertical polarization antenna to the ODU, disconnect the
horizontal polarization antenna, then perform Aligning antennas on
page
6-45.
3
Re-connect the horizontal polarization antennas. The received signal
level should increase.
4
Weatherproof the antenna connections at the ‘H’ and ‘V’ interfaces of
the ODUs, as described in Mounting and connecting antennas on page
5-17.
Monitoring received signal level
The goal of antenna alignment is to find the center of the main beam. This is done by
adjusting the antennas while monitoring the receive signal level. Choose one of three
methods for monitoring receive signal level:
Method #1: ODU installation tones on
page 6-48
Method
#2: digital voltmeter (DVM) on pa
ge 6-50
Method #3: graphical install on page 6-51
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