Figure 6: Separation Distances Between Antennas - NorthStar 951X Installation Manual

SECTION TWO - Installing the unit
Page 16
ble-free installation; however, the installer may want to adjust these
distances, depending on the particular equipment and how it's config-
ured. Because each installation is unique—according to the wishes of the
customer—this information should be used only as a guideline. It isn't
absolute in determining the best location for every possible equipment
configuration.

Figure 6: Separation distances between antennas

Be especially careful about the distance between the combo
antenna and any sources of magnetic interference (for exam-
ple, the INMARSAT antenna).
Choosing the AN205-P combination antenna location
For applications where optimum portability is required, or when you
want only a single antenna, a combination GPS/DGPS antenna is avail-
able. The "combo" antenna should be located where it has a clear view of
the horizon, but where it isn't the highest point on the vessel. Keep the
combo antenna at least six feet away from objects that can "shade" GPS or
differential signals.
If poor GPS Signal-to-Noise Ratio (SNR) readings are obtained after the
unit has been running for several minutes, check that you have the
proper length of cable, and verify the quality of the antenna location and
the quality and proper termination of the connectors. SNR should be as
NOTE:
951/952 INSTALLATION MANUAL Revision B