Raymarine gS Series, Installation And Operation Instructions Manual, Page: 118 / 208

18.1 Radar overview
Radar is used to provide information that can help you to track
targets and measure distances and bearings.
Radio Detection And Ranging (RADAR) is used at sea to detect
the presence of objects (known as ‘targets’) at a distance, and if
they are moving, detect their speed.
Radar works by transmitting radio pulses, then detecting
reflections of these pulses (echoes) from objects in the area and
displaying the reflections as targets on your display.
Until you are familiar with interpreting the radar display, every
opportunity should be taken to compare the radar screen
patterns with visual targets, such as other boats, buoys and
coastal structures. You should practise harbor and coastal
navigation during daylight hours and in clear weather conditions.
HD and SuperHD radar
Your multifunction display can be used with radar scanners.
HD and SuperHD radar scanners provide a range of advantages,
making it easier to discern objects around your vessel.
HD and SuperHD radar scanners provide:
• Improved target detection.
• Full-color image.
• Dual Range operation.
• SuperHD option. This effectively increases the transmitter
power by a factor of at least 2, and reduces the beamwidth by
a similar amount.
Note: You must connect a SuperHD radar scanner in order
to use the SuperHD option.
Multiple radar scanners
The multifunction display only supports the use of 1 radar on
the network.
When the radar application is opened, if multiple radar scanners
are detected then a warning message shall be displayed.
Additional scanners will need to be removed from the network
before the radar application will function.
Radar Features
Depending on the type of Raymarine radar you have different
features will be available to you, the table below shows which
features and settings are supported by radar type:
Feature
Non-HD
Digital
Radome
HD Radome
HD Open
Array SuperHD
Open Array
Color Gain Auto /
Manual
(0-100%) Auto /
Manual
(0-100%) Auto /
Manual
(0-100%)
FTC Off/On
(0-100%)
Sea Harbour /
Coastal /
Offshore
/ Manual
(0-100%) Auto /
Manual
(0-100%) Auto /
Manual
(0-100%) Auto /
Manual
(0-100%)
Auto Mode:
Buoy
Auto Mode:
Harbor
Auto Mode:
Offshore
Auto Mode:
Coastal
Auto Mode:
Bird
Feature
Non-HD
Digital
Radome
HD Radome
HD Open
Array SuperHD
Open Array
Power Boost
Antenna
Boost
Interference
Rejection Off / Normal
/ High Off / On Off / On Off / On
Target
Expansion Off / Low /
High Off / On Off / On Off / On
MARPA
Targets 10 25 25 25
Dual Range
Dual Range
Restrictions
N/A
Scanner
Speed 24 RPM 24 RPM /
Auto 24 RPM /
Auto 24 RPM /
Auto
Parking
Offset 0-360
degrees 0-360
degrees
Antenna
Size 4ft / 6ft 4ft / 6ft
Display
Timing 0-153.6m 0-767m
(range
dependant) 0-767m
(range
dependant) 0-767m
(range
dependant)
STC Preset 0-100%
Gain Preset 0-100
Tune
Correction
Note: Features not listed are supported by all types of
Raymarine Non-HD Digital, HD and SuperHD radars.
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gS Series