Antenna Alignment; Figure 58 Bnc Connector For Rssi Voltage - Trango Systems TrangoLINK GigaPlus User Manual

Antenna Alignment

After Basic Setup of the link, the antennas can be aligned.
Aligning narrow beam width (< 2 deg) over long distances can be a difficult process
without the proper equipment, patience, and a careful process.
Using a GPS compass and the Path Analysis to establish a crude azimuth and elevation,
the installation crew can mount the Antenna Assembly on the supporting structures at
each end of the link. Once the antennas are installed and a rough antenna alignment
has been established, then the fine alignment process can begin at one end of the link
(typically the site with the smaller antenna).
Once one side is aligned to achieve best RSSI, MSE, and BER then the operator can
adjust the other side to improve the link. Alignment can be done using the linktest
command from the command line interface, or the voltage indication from the BNC
connector on the ODU.
Run the linktest command while aligning the antenna and look for the MSE to improve
(a higher negative number) while adjusting. When the lock status changes to 1, you
may fine tune the alignment with the LED display
Antenna Alignment Procedure
1. Ensure that both sides of the link are configured correctly.
2. Connect to the management port of the GigaPlus.
Trango Systems, Inc.

Figure 58 BNC Connector for RSSI Voltage

GigaPlus User Manual Rev 3.1
123