Motorola PTP 500, Руководство по развертыванию

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Installation and Commissioning
Aligning the PTP 300 or PTP 500 Series Bridge ODUs
The PTP 300 and PTP 500 Series Bridges use audible tones during installation to assist the
installer with alignment. The installer should adjust the alignment of the ODU in both azimuth and
elevation until highest pitch tone is achieved
.
The pitch of the alignment tone is proportional to the received power of the wireless signals. The
best results are usually achieved by making small incremental movement in angular alignment.
The tones and their meanings are as follows:
State Name Tone
Description State Description Pitch Indication (Higher
pitch = higher power)
Free Channel
Search Regular
beep Executing band scan N/A
Scanning Slow broken
tone
Not demodulating the
wanted signal Rx Power
Synchronized Fast broken
tone
Demodulating the
wanted signal Rx Power
Registered Solid tone Both Master and
Slave units
exchanging Radio
layer MAC
management
messages Rx Power
Alarm Fast broken
dual tone
A fatal error has
occurred.
The term ‘wanted signal’ refers to that of the peer unit being installed.
In each of the states detailed above, the unit should be aligned to give the highest pitch tone. It
should be noted that if, when in the Synchronized or Registered state, the tone varies wildly, you
may be suffering from interference or a fast fading link. Installing in this situation may not give a
reliable link. The cause of the problem should be investigated.
For the ease of alignment, both Master and Slave units use the install tones in the same way but
with some small behavioral differences. This allows the installer to install the Slave unit first and
carry out the initial alignment with the Master unit if desired. However, due to the behavioral
differences of Master and Slave units, it is recommended that the Master unit is installed first and
the initial alignment carried out at the Slave unit.
Once the optimum performance has been achieved by directing the Slave unit (indicated by
highest frequency of tone) then adjustment of the direction of the Master unit should be done
without moving the Slave. Repeat if necessary at the Slave and then the Master until optimum
alignment has been obtained.
4Gon www.4Gon.co.uk info@4gon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299