Lighthouse Raymarine gS 195, Installation And Operation Instruction Manual

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Note: GLONASS satellites are only available
when connected to a compatible receiver such as
the built-in receiver of an a9x or a12x MFD.
Satellite status area
The Satellite status area displays the following
information about each satellite:
• Type — Identifies which constellation the satellite
belongs to.
• ID — Displays the satellites identification number.
• CNO (Carrier-to-noise ratio) — Displays the signal
strength of each satellite shown in the Sky view:
– Grey = searching for satellite
– Green = satellite in use
– Orange = tracking satellite
• Azimuth and Elevation — Provides the angle of
elevation and azimuth between the location of the
receiver and the satellite.
Position and fix information
The following positional and fix information is
provided:
• Horizontal Dilution of Precision (HDOP)
— HDOP is a measure of satellite navigation
accuracy, calculated from a number of factors
including satellite geometry, system errors in
the data transmission and system errors in the
receiver. A higher figure signifies a greater
positional error. A typical receiver has an accuracy
of between 5 and 15 m. As an example, assuming
a receiver error of 5 m, an HDOP of 2 would
represent an error of approximately 15 m. Please
remember that even a very low HDOP figure is
NO guarantee that your receiver is providing an
accurate position. If in doubt, check the displayed
vessel position in the Chart application against
your actual proximity to a known charted object.
• Estimated Horizontal Position Error (EHPE)
— EHPE is a measure of the estimated error of
a position fix in the horizontal plane. The value
displayed indicates that your position is within a
circle radius of the stated size 50% of the time.
• Fix status — indicates the actual mode the
receiver is reporting:
– Fix — Satellite fix has been acquired.
– No Fix — No satellite fix can be acquired.
– D Fix — A differential beacon fix has been
acquired.
– SD Fix — A differential satellite fix has been
acquired.
• Position — Displays the latitude and longitude
position of your receiver.
• Date / Time — Displays the current date and time
generated by the position fix in UTC format .
• Mode — Identifies wether the receiver is working
in differential mode or non-differential mode.
• Datum — The receiver's datum setting affects
the accuracy of the vessel position information
displayed in the Chart application. In order for your
receiver and MFD to correlate accurately with your
paper charts, they must be using the same datum.
Multiple data sources (MDS) overview
Installations that include multiple instances of data
sources can cause data conflicts. An example is an
installation featuring more than one source of GPS
data.
MDS enables you to manage conflicts involving the
following types of data:
• GPS Position.
• Heading.
• Depth.
• Speed.
• Wind.
Typically this exercise is completed as part of the
initial installation, or when new equipment is added.
If this exercise is NOT completed the system will
automatically attempt to resolve data conflicts.
However, this may result in the system choosing a
source of data that you do not want to use.
If MDS is available the system can list the available
data sources and allow you to select your preferred
data source. For MDS to be available all products
in the system that use the data sources listed
above must be MDS-compliant. The system can
list any products that are NOT compliant. It may
be necessary to upgrade the software for these
non-compliant products to make them compliant.
Visit the Raymarine website (
www.raymarine.com )
to obtain the latest software for your products. If
MDS-compliant software is not available and you do
NOT want the system to automatically attempt to
resolve data conflicts, any non-compliant product(s)
can be removed or replaced to ensure the entire
system is MDS-compliant.
Customizing your display
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