User's Manual Part 1

Connecting and Aligning ODUs / Antennas Chapter 3
RADWIN 2000 User Manual Release 2.5.40 3-13
Connecting and Aligning ODUs / Antennas
You perform antenna alignment using the ODU's audible tone.
To speed up the installation time, alignment of a RADWIN 2000 system should be performed
by two teams simultaneously, at site A and at site B.
 To align ODUs with integrated antennas or external bipolar antennas:
1. For external bipolar antennas: Using a coax cable with N-Type connectors, connect
the vertical polarization connector of the antenna to the ANT 1 connector of the
ODU.
2. For external bipolar antennas: Using a coax cable with N-Type connectors, connect
the horizontal polarization connector of the antenna to the ANT 2 connector of the
ODU.
3. Ensure that power is connected to the IDUs at both sites.
4. Ensure normal operation of the IDUs by the LED indications on the front panel.
Provided that site A detects the signal from site B, the ODU starts beeping 20 sec-
onds after power up, and continues beeping until the ODUs are aligned, and the
installation is complete.
In the following steps, “antenna” refers both to an external antenna and an inte-
grated antenna.
5. Direct the antenna of site B in the direction of site A. This is simplified if a previous
site survey has been completed and azimuths are known.
6. Make a horizontal sweep of 180 degrees with the site A antenna so that the strongest
signal from site B can be detected.
7. Slowly turn the site A antenna back towards the position of site B, listening to the
tone until the best signal is reached. See the following figure for audible signal varia-
tions.
Warning
When aligning the antennas, do not stand in front of a live antenna.