User's Manual Chapter 3

FibeAir 1500 Installation & Operation Manual Chapter 3. Installation
Revision 2.0 Installation Instructions 3-35
Figure 3-34 Adjusting Elevation - Two Foot Antenna
11. Once you attain the highest audible tone, disconnect the BNC headset
adapter.
This completes the initial alignment of the system.
3.10.3. Alignment Verification − Checking Actual Receive Level
When pivoting the antenna ±2° in azimuth and elevation during antenna
alignment, three distinct lobes are probable: the two side lobes and the
center (main) lobe. To ensure optimum system performance, the center
lobe of the antenna must be aligned with the center of the opposing antenna
in the link.
The initial alignment procedure explained in the previous section allows you
to align the system to the peak of a lobe. However, it is difficult to make sure
that the system is aligned to the center lobe using the tone heard through
the headset. Therefore, following the initial alignment procedure you must
perform the final alignment verification explained below in order to make
sure that the system is aligned to the center lobe by verifying that the actual
received signal level corresponds to the expected receive signal level.
When the antenna is aligned to a side lobe, the expected RSL is at least
25dB less than the calculated unfaded RSL.
Loosen nuts and
adjust elevation
Loosen nuts