33
各路径信号值
3
1
2
B
7
4
5
6
A
B
'
A
'
C
'
C
A
'
A
B
B
'
C
C
'
天线不同仰角下扫描路径的正面图
2
4
6
7
1
3
5
Front view of the tracking lines at different
elevation angles for the antenna
RSL values of each line
2
Aligning Dual-Polarized Antennas
Power off the vertically-polarized ODUs and power
on the horizontally-polarized ODUs at both ends of
a radio link. This ensures that the antennas at both
ends transmit horizontally polarized signals.
Adjust the azimuth and pitch angle of the antennas
at both ends by referring to the description in
"Aligning Single-Polarized Antennas." Ensure that
the main lobes of the horizontally-polarized signals
are aligned.
Loosen/Tighten the elevation adjustment screw to turn the local antenna vertically. Adjust the pitch angle
until the RSL reaches the peak within the tracked range.
Repeat Steps 3 to 4 to ensure that three signal peaks are tracked both horizontally and vertically. When
the local RSL reaches the maximum peak value, secure the local antenna.
Adjust the remote antenna to ensure that the RSL at the local end and the RSL at the remote end reach
the peak value. Check that the ODU indicator on the IF board is off. If the ODU indicator on the IF board is
yellow and blinks every 300 ms, continue aligning the antennas.
Tighten all the screws on the antennas after the alignment is completed.
If an OMT is used to connect the ODUs to the antenna in direct mount mode, the alignment procedure for these
antennas is the same as that for single-polarized antennas. If soft waveguides are used to connect the ODUs to
the antenna in separate mount mode, follow the procedure below to align the antennas.
