2 INSTALLATION
2.1Mounting Considerations
2.1.1Antenna unit
General
•Keep the length of the antenna cable in mind when selecting a mounting location.
Installing the antenna above superstructures
•The antenna must be mounted above all other structures on the vessel to obtain an unobstructed view of the satellites regardless of vessel heading. Failure to do so will cause shadows and multipath reflection problems.
Mast
RadarAntenna
Bridge
Example of antenna installed above all superstructures
Installing the antenna below superstructures
If it is not possible to mount the antenna above all superstructures on the vessel, as shown in the illustration above, shading and multipath problems may occur on at least one heading, and possibly more. To possibly avoid those problems, observe the guidelines in this section.
NOTICE
If the antenna is installed below any superstructure, the installation must
be done over a
At least 12 hours are required to capture tracking data to measure multipath indexes and locate areas of shading.