AR60X Installation Manual
3.9 Antenna Alignment
1.Finish the installation as described in Chapter 3.6 and 3.7
2.Ensure fiber cables are still disconnected!
3.Connect DC power to the radio.
4.Verify that the Power LED is lit. If the Power LED is not lit, use voltmeter to verify correct voltage and polarity at radio. To reverse the power polarity, unplug the power jack and swap the two conductors.
5.Repeat steps 1 through 4 on other side of the link.
6.Connect QUAL and RSL test cable to the radio.
7.Slightly rotate each antenna up/down and left/right to find the maximum RSL voltage reading. To ensure that the antennas are not aligned on a sidelobe, they must be rotated at least ten degrees on each side of the visuallyperceived alignment center to ensure that the true maximum RSL voltage is found; note that the width of the center beam is only 0.6 degrees and the first sidelobe beam is only 1.5 degrees off from center. Set the antenna in the position that results in the highest RSL voltage reading. See Section 3.9 to determine the proper use of the supplied test cable in order to read the RSL voltage.
Verify that the RSL voltage falls within the expected range based on the graph in Appendix B.
8.Ensure all bolts are tightened securely and the RSL voltage remains unchanged during tightening. Keep in mind that it is very important that the azimuth bolts are tightened before any adjustment on the elevation is done. The very narrow beamwidth of this antenna (0.6º) makes it necessary to completely tighten the bolts of the azimuth adjustment while adjusting the elevation and vice versa.
9.Connect the fiber cable to one of the radios at a time. The fibers should already be connected to active network equipment. If the unit is not to be connected using fiber cabling, a temporary loopback fiber must be used to perform this operation.
10.Verify the Fiber LED’s on each radio are illuminated solid.
The fiber integrity indication on the network equipment could show up or down independent of the link status. Once the radio link is up and network equipment connected on both sides of the link the network equipment should indicate fiber integrity.
58000517, rev B | 24 |
