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Aligning Antennas
1
Aligning Single-Polarized Antennas
Use the installation positions and heights of local and remote antennas to determine their azimuths. Adjust
the pitch angles of the antennas to the horizontal position.
Connect a multimeter to the received signal strength indicator (RSSI) port on the ODU at the local end and
measure the voltage value V
BNC
.
Level adjustment screw
Elevation adjustment screw
The red line of the multimeter is connected to the core of the RSSI port, and the black line is connected to the
ground pin.
a
b
c
Secure the remote antenna and loosen/tighten the level adjustment screw to turn antenna widely in the
horizontal direction.
If three signal peaks are tracked, adjust the azimuth of the antenna until the received signal level (RSL)
reaches the peak value at position 2.
If two signal peaks are tracked, adjust the azimuth of the antenna until the RSL reaches the middle of
positions 4 and 5. Then, adjust the pitch angle of the antenna using the elevation adjustment screw until
the three signal peaks on the line AA' appear. Finally, adjust the azimuth of the antenna until the RSL
reaches the peak value at position 2.
If one signal peak is tracked, adjust the azimuth of the antenna until the RSL reaches the middle of
positions 6 and 7. Then, adjust the pitch angle of the antenna using the elevation adjustment screw until
the three signal peaks on the line AA' appear. Finally, adjust the azimuth of the antenna until the RSL
reaches the peak value at position 2.
