Huawei OptiXRTN 980L, Quick Installation Manual

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53
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
Adjust the elevation adjustment screw. At the local end, gently adjust the elevation and azimuth until the
RSL reaches the peak within the tracked range.
Repeat Steps 3 to 4 to ensure that three signal peaks are tracked in both horizontal and vertical directions.
When the local RSL reaches the maximum peak value, tighten 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 the status of the ODU indicator on the IF board. 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
antenna.
Tighten all the screws of the antennas after the alignment is completed.
a
b
c
Retain the remote antenna secure. Adjust the level adjustment screw. At the local end, rotate the antenna widely in
the horizontal direction.
If three signal peaks are tracked, adjust the azimuth of the antenna so that the received signal level (RSL)
reaches the peak value at position 2.
If two signal peaks are tracked, adjust the azimuth of the antenna to the middle of positions 4 and 5. Then,
adjust the elevation of the antenna so that the three signal peaks such as the signals on the line AA' can
appear. Adjust the antenna so that the RSL reaches the peak value at position 2.
If one signal peak is tracked, adjust the azimuth of the antenna to the middle of positions 6 and 7. Then,
adjust the elevation of the antenna so that the three signal peaks such as the signals on the line AA' can
appear. Adjust the antenna so that the RSL reaches the peak value at position 2.
Front view of the lines tracked at
different elevations of the antenna
RSL value of each line
2
Aligning Dual-Polarized Antennas
Power off the vertically polarized RFUs at both ends of a radio link, power on the horizontally polarized
RFU/ODUs at both ends of the radio link. This ensures that the antennas at both ends transmit
horizontally polarized signals.
Adjust the azimuth and elevation of the antennas at both ends by referring to the description in
“Aligning Single-Polarized Antennas”, and ensure that the main lobes of the horizontally polarized
signals are aligned with the antennas.