Raymarine C140w Fish Finder User Manual


 
9.1 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 reections
of these pulses (echoes) from objects in the area and displaying the
reections 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.
Digital radar
Your multifunction display can be used with digital radar scanners.
Digital radar scanners provide a range of advantages over analog
radar, making it easier to discern objects around your vessel.
Digital 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 two, and reduces the beamwidth by a
similar amount.
Note: You must connect a SuperHD radar scanner in order to
use the SuperHD option.
9.2 Radar scanner power modes
The radar scanner has a number of power modes.
The radar scanner icon in the databar indicates the power status of
the radar scanner. The following is an explanation of each status:
Radar
Mode
Radar Status
Icon Description of status
Transmit
(TX)
Rotating icon, signifying that the scanner
is on and transmitting. When SCANNER
is set to ON, select this mode to activate
the scanner. This is the usual mode of
operation.
Standby
(STBY)
Static icon, indicating that the scanner is
on but not transmitting, and the antenna is
not rotating. Antenna does not rotate, the
scanner does not transmit and the radar
data is removed from the screen. This is a
power save mode used when radar is not
needed for short time periods. When you
return to transmit mode, the magnetron
does not need to warm up. This is the
default mode.
OffScanner powered off when radar not
required, but display is in use for other
applications, such as the chart. When
selected, the system counts down. During
this time you cannot re-power the scanner.
Timed
Transmit
Scanner switches between on/transmitting,
and standby mode. Scanner goes into
power save mode when constant use of
radar is not required.
100 C-Series Widescreen user reference