EtherHaul™ 8000 Installation, Operation and Maintenance Manual
Page 33
6.
Align the fine Azimuth axis. Use the hexagonal wrench to adjust the Azimuth fine
adjustment screw (
). Be sure to sweep the complete range of the Azimuth in
order to determine the maximum received signal strength position.
When the optimum axis is achieved, tighten both Azimuth adjustment lock bolts
(
).
7.
Align the fine elevation axis. Use the hexagonal wrench to adjust the elevation
fine adjustment screw (
). Be sure to sweep the complete range of the
elevation in order to determine the maximum received signal strength position.
When the optimum axis is achieved, tighten both elevation adjustment lock
bolts (
).
8.
Perform steps 6 and 7 for the remote radio.
9.
Repeat steps 6 and 7 for the local radio and so on until optimum achieved.
10.
Use the DVM to verify maximum received signal strength on both local and
remote radios. For best performance, measured RSSI should be within ±4 dB of
the calculated value.
11.
Once the optimum position has been achieved for the link, tighten the Azimuth
adjustment lock bolts (
) on one radio (torque of 8 Nm), being very careful not
to move the radio while tightening.
12.
Tightening the Azimuth adjustment lock bolts will tilt the radio, so realign the
elevation again for optimum position.
13.
Once the optimum position has been achieved for the radio pair, tighten the
elevation adjustment lock bolts (
) on the radio (torque of 8 Nm), being very
careful not to move the radio when tightening.
14.
Repeat steps 11 through 13 for the second radio.
15.
Use the DVM to verify that the received signal strength has not changed on
either the local or the remote radio after final tightening of the brackets.
Antenna alignment is now complete.
Note:
Valid RSSI reading during alignment is available up to an RSSI value of -30dBm
(overload threshold). When operating short links (or using large antennas to achieve
high availability) resulting in expected RSSI higher than -30dBm, RSSI reading may not
be accurate due to saturation.
In such case, it is recommended to connect to the radio and switch both sides to
Short Range. Short Range mode allows the radio to work with higher RSSI levels (up
to about -25dBm), compared to the typical overload threshold of -30dBm.
In case expected RSSI is higher than -25dBm, adjust the Tx power until RSSI is -25dBm
and only then align the antennas.
