Gps Check; Gps Status - Lighthouse Raymarine gS95 Installation And Operation Instruction Manual

7.1 GPS Check

Checking GPS operation
You can check that the GPS is functioning correctly
using the chart application.
1. Select the Chart page.
2. Check the screen.
With the chart displayed, you should see:
Your boat position (indicates a GPS fix). Your
current position is represented by a boat symbol
or solid circle. Your position is also displayed in
the data bar under VES POS.
A solid circle on the chart indicates that neither
heading nor Course Over Ground (COG) data
is available.
Note: Raymarine recommends that you check the
displayed vessel position in the chart application
against your actual proximity to a known charted
object. GPS receivers typically have an accuracy
of between 5 and 15 m.
Note: A GPS Status screen is available within the
Setup menu of Raymarine multifunction displays.
This provides satellite signal strength and other
relevant information.
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7.2 GPS Status

The GPS status page enables you to view the status
of the available satellites that are compatible with
your receiver.
The satellite constellations are used to position your
vessel in the Chart and Weather applications. You
can set up your receiver and check its status from
the GPS Set-up menu: Homescreen > Set-up >
System Settings > GPS Set-up. For each satellite,
the screen provides the following information:
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1. Sky view
2. Satellite status
3. Position and fix information
Sky view
Sky view is a visual representation that shows
the position of navigation satellites and their type.
Satellite types are:
• Circle — A circle identifies a satellite from the
GPS constellation.
• * Diamond — A diamond identifies a satellite from
the GLONASS constellation.
• Square — A square identifies an (SBAS)
differential satellite.
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
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gS Series