Aviat Networks ECLIPSE EDGE, User Manual

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260-668080-001 Rev 002 March 2013 31
Eclipse Edge User Manual
If the horizontal adjuster does not provide sufficient range to locate the main beam,
the antenna mounting brackets will need to be loosened and the antenna swivelled on
its pole mount to locate the beam. Before doing this ensure the horizontal adjuster is
set for mid-travel. Some mounts for larger antennas have a separately clamped swivel
base to allow the loosened antenna to swivel on it without fear of slippage down the
pole. Where such a mount is not provided a temporary swivel clamp can often be
provided using a pair of pipe brackets bolted together immediately below the antenna
mount.
Refer to:
• Standard Alignment Procedure
• Additional Procedures for a Protected LinkReturn the Protected Link controls to
Auto/Lock Off on completion.
NOTE:
Ensure the antennas are aligned on the main beam, and not a side lobe. For
guidance, refer to the sections
Locating the Main Beam for Edge
Antennas on page 33
and
Tracking Path Error for Edge Antennas on
page 34
.
Ensure ATPC is turned off during the alignment procedure.
Standard Alignment Procedure
To align (pan and tilt) an antenna:
1. Loosen the azimuth adjuster on the antenna mount (horizontal angle) and adjust
azimuth position for maximum signal strength.
2. Tighten the azimuth securing mechanism, ensuring signal strength does not drop
as it is tightened.
3. Loosen the elevation adjuster (vertical angle) and adjust for maximum signal
strength.
4. Tighten the elevation securing mechanism, ensuring signal strength does not drop
as it is tightened.
5. Repeat for the terminal at the other end of the link.
The terminals are now aligned and ready to carry operational traffic.
6. Record RSL and/or RSSI voltages in the commissioning log for each terminal.
Additional Procedures for a Protected Link
• For a hot standby link, one ODU is transmitting, and at the receive end both are
receiving. The ODUs at each end are normally coupled to a common antenna using
an equal-loss or unequal-loss coupler.
• For a space diversity link, one ODU is transmitting, and at the receive end both are
receiving. Each ODU has its own antenna. Normally the top antenna is assigned as
primary, and the lower as secondary.
• A Tx lock is used to lock an ODU, so that unwanted Tx switching does not occur
during the alignment process.