Hemisphere GPS Crescent V100 Series, User Manual

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6
1: Installation
Crescent V100 Environmental Considerations
The Crescent V100 is designed to withstand the harsh outdoor
environment, however, there are specific environmental limits that
should be met when storing and using this system.
The Crescent V100 is designed to be stored between -40
°
C and
+85
°
C
(-
40
° F and +
185
° F). The operating temperature range is
-
32
°
C
and +
74
°
C (-25.6
° F
and +165.2
° F
)
. It is designed for harsh
marine use and will operate in an environment with 100% relative
humidity.
Mounting Orientation
There are two primary mounting orientations possible with the
Crescent V100 system. The first and most common method is to
mount the Crescent V100 enclosure pointing in a direction parallel
to the axis of the boat, facing the bow. This mounting configuration
provides the ability for the Crescent V100 system to output both
heading and the pitch of the vessel.
If a gyrocompass is present onboard, this could be used as truth to
calibrate the physical heading of the Crescent V100 and its
corresponding heading measurements to true heading of the boat
by entering a heading bias into the Crescent V100 configuration.
For example, if a gyrocompass heading provides 183.2
° while the
Crescent V100 provides a heading of 184.0, a bias of -0.8 (the bias
is added) should be programmed into the Crescent V100 to
calibrate its heading. The Crescent V100 could be physically
adjusted to correct for this deviation.