Table 6-5 Antenna Alignment Tones - Motorola PTP 250 User Manual

PTP 250 User Guide
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
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.
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.
phn-2182_003v004 (Oct 2011)
Tone State Description
Description
Regular beep Executing band scan
Slow broken Not demodulating the
tone wanted signal
Fast broken tone Demodulating the
wanted signal
Solid tone Both Master and Slave
units exchanging Radio
layer MAC
management messages
Fast broken dual A fatal error has
tone occurred.
UNDER DEVELOPMENT
Table 6-5. In each of the states detailed in
Aligning antennas
Pitch Indication
N/A
Rx Power
Rx Power
Rx Power
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