User's Manual Chapter 3

Chapter 3. Installation FibeAir 1500 Installation & Operation Manual
3-36 Installation Instructions Revision 2.0
Figure 3-35 Antenna Alignment − Main and Side Lobes
1. Connect a DVM (Digital Voltmeter) - BNC adapter to the ODU.
2. Set the DVM to 2 VDC.
3. Turn the DVM on.
The reading on the DVM indicates receive signal level.
For example, if -1.44V is displayed, receive signal level is -44 dBm.
4. Compare the value displayed on the DVM to the expected value
determined in section 3.9.11, step 2.
5. If the received signal level matches the expected level, tighten all bolted
joints and remove the safety assembly.
Important
It is important to verify that the antenna is aligned to the center lobe
peak. Proper alignment reduces the sensitivity to antenna movement,
which can be due to strong winds or any other forces.
3.10.4. Final Check
When the antenna is installed, make sure that all aspects of the installation
instructions have been followed. Check that all bolted joints are tightly
locked, and connect and cover the coax cable connector as follows:
1. Connect the coaxial cable between the IDU and ODU using the
N-Type connector on the IDU and the ODU.