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5.
Installation
5.1
Site Survey
Prior to installation, the installation crew must perform a site survey. The factors involved in site surveys
are:
Determine the right location for the antenna mount - If the antennas are to be mounted on a tower,
then the installer must insure that the rights are secured and the exact location of the tower must
be determined from the tower operator. If a rooftop location is available, the installer must identify
an appropriate location on the rooftop. Make sure to avoid obstacles, metallic surfaces nearby,
and other potential structures that could degrade the system performance.
Determine the pole mounting structure - The mounting pole structure must be secure enough to
withstand the wind loading as well as any pressure exerted on the structure while tightening the
antenna mounting gear. The recommended minimum diameter for a 2 ft antenna is 65mm. For
larger antennas, the diameters must be larger. Please refer to the Antenna Manufacturer's
documentation for detailed Wind Load information.
Line of sight – make sure that a line of sight is available for the link. For a short link, a visual
check may be sufficient. For longer links, it is recommended that a terrain path program is used to
insure a LOS condition and to avoid structures in the Fresnel zone of the link being planned.
5.2
IDU Installation
The IDU should be installed in a network rack and powered from a -48V DC source.
There are a few additional steps as part of the IDU installation:
Make sure that the IDU is powered on correctly. The Power LED should be lit green.
The user interface is accessible. The serial port local connection may be used for a quick check.
Check the basic functions of the system to make sure that the system is operational.
DO NOT change the factory default configuration settings at this time. The factory default settings
are provided for ease of antenna alignment and link establishment.
Once you have verified the IDU functions, disconnect the power to the IDU. For your safety, only
turn on the IDU power when the ODU has been properly connected on the tower site.
5.3
ODU/Antenna Assembly
Prior to a tower climb, the ODU should be mounted to the antenna. The SkyWay-LM ODU has a direct
mount structure to antennas that are designed for that by using the REMEC Connector Interface.
As mentioned before, it is critical that the selected antenna is designed to interface with the SkyWay-LM
ODU, specifically:
Connector Type – The type compatible with the SkyWay-LM Series is REMEC Connector
Interface. Make sure that the antenna part number specifies as such.
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