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Aligning antennas
Antenna alignment tones
This is the first method that may be used to monitor receive signal level during
antenna alignment.
The ODU emits audible tones during installation to assist with alignment. The pitch of
the alignment tone is proportional to the received power of the wireless signals. Adjust
the alignment of the unit, in both azimuth and elevation, until the highest pitch tone is
achieved.
The tones and their meanings are described in
in the table, align the unit to give the highest pitch tone.
Table 6-5 Antenna alignment tones
State Name
Free Channel
Search
Scanning
Synchronized
Registered
Alarm
The term 'wanted signal' refers to that of the peer unit being installed.
CAUTION
6-28
Tone
Description
Regular beep
Slow broken
tone
Fast broken tone
Solid tone
Fast broken dual
tone
If, when in the Synchronized or Registered state, the tone varies wildly,
there may be interference or a fast fading link. Installing in this situation
may not give a reliable link. Investigate the cause of the problem.
Chapter 6 Configuration and alignment
Table
6-5. In each of the states detailed
State Description
Executing band scan
Not demodulating the
wanted signal
Demodulating the
wanted signal
Both Master and Slave
units exchanging Radio
layer MAC
management messages
A fatal error has
occurred.
Pitch Indication
N/A
Rx Power
Rx Power
Rx Power
phn-2182_002v000
May 2011
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