Aligning Antennas with the Beeper
WinLink User and Installation Guide Version 1.750 3-41
Provided that Site A detects the signal from Site B, the ODU starts
beeping 20 seconds after power up, and continues beeping until
the ODUs are aligned, and the installation is complete.
2. Verify normal operation of the IDU by the LED indications on the
front panel. See IDU Front Panel Indicators.
3. Direct t
he antenna of site B in the direction of the site A. This is
simplified if a previous site survey has been completed and
azimuths are known.
4. Make an azimuth sweep of 180 degrees with the site A ODU so that
the strongest signal from site B can be detected.
5. Slowly turning the site A ODU back towards the position of Site B,
listen to the tone until the best signal is reached. See the following
figure for audible signal variations.
Figure
3-8: Beeper Sequence for ODU Alignment
Note:
Three beeps and a pause is the best signal
Two beeps and a pause, signal quality increased
One beep and pause is no signal change
Any other signal detects no signal between ODUs.
6. Secure the site A ODU to the mast/wall.
7. At site B, adjust the ODU slowly whilst listening to the beeper
sequence until the best signal is attained.
8. Secure the site B ODU to the mast/wall.
9. Monitor the link quality for about 15 minutes to verify stability.
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