Garmin ECHOMAP PLUS 70 series Manuale d'uso - Pagina 29
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appear on the screen as long as it appears within the range you
have set.
1
From a sonar view, select MENU > Range.
2
Select an option:
• To allow the chartplotter to adjust the range automatically,
select Auto.
• To increase or decrease the range manually, select Up or
Down.
TIP: From the sonar screen, you can select
manually adjust the range.
TIP: When viewing multiple sonar screens, you can select
SELECT to choose the active screen.
Sonar Appearance Settings
From a sonar view, select MENU > Sonar Setup >
Appearance.
Color Scheme: Sets the color scheme.
Edge: Highlights the strongest signal from the bottom to help
define the hardness or softness of the signal.
A-Scope: Displays a vertical flasher along the right side of the
screen that shows instantaneously the range to targets along
a scale.
Pic. Advance: Allows the sonar picture to advance faster by
drawing more than one column of data on the screen for
each column of sounder data received. This is especially
helpful when you are using the sounder in deep water,
because the sonar signal takes longer to travel to the water
bottom and back to the transducer.
The 1/1 setting draws one column of information on the
screen per sounder return. The 2/1 setting draws two
columns of information on the screen per sounder return, and
so on for the 4/1 and 8/1 settings.
Fish Symbols: Sets how the sonar interprets suspended
targets.
Sonar Alarms
NOTE: Not all options are available on all transducers.
From an applicable sonar view, select MENU > Sonar Setup >
Alarms.
You can also open the sonar alarms by selecting Settings >
Alarms > Sonar.
Shallow Water: Sets an alarm to sound when the depth is less
than the specified value.
Deep Water: Sets an alarm to sound when the depth is greater
than the specified value.
FrontVü Alarm: Sets an alarm to sound when the depth in front
of the vessel is less than the specified value, which can help
you avoid running aground
page
24). This alarm is available only with Panoptix FrontVü
transducers.
Water Temp.: Sets an alarm to sound when the transducer
reports a temperature that is 2°F (1.1°C) above or below the
specified temperature.
Fish
Fish: Sets an alarm to sound when the device detects a
suspended target.
•
sets the alarm to sound when fish of all sizes are
detected.
•
sets the alarm to sound only when medium or large
fish are detected.
•
sets the alarm to sound only when large fish are
detected.
Sonar Fishfinder
or
to
(Setting the FrontVü Depth Alarm,
Advanced Sonar Settings
NOTE: Not all options and settings apply to all models and
transducers.
From a sonar view, select MENU > Sonar Setup > Advanced.
Interference: Adjusts the sensitivity to reduce the effects of
interference from nearby sources of noise.
The lowest interference setting that achieves the desired
improvement should be used to remove interference from the
screen. Correcting installation issues that cause noise is the
best way to eliminate interference.
Surface Noise: Hides surface noise to help reduce clutter.
Wider beam widths (lower frequencies) can show more
targets, but can generate more surface noise.
Color Gain: See
Adjusting the Level of Detail, page
TVG: Adjusts the appearance of returns to compensate for
weakened sonar signals in deeper water, and reduces the
appearance of noise near the surface. When the value of this
setting is increased, the colors associated with low-level
noise and fish targets appear more consistent through
various water depths. This setting also reduces the noise
near the surface of the water.
Transducer Installation Settings
NOTE: Not all options and settings apply to all models and
transducers.
From a sonar view, select MENU > Sonar Setup > Installation.
Restore Sonar Defaults: Restores the factory default settings
for the sonar view.
Transducer Type: Allows you to select the type of transducer
that is connected to the device.
Flip Left/Right: Changes the orientation of the SideVü sonar
view when the transducer is installed backward.
Flipped: Sets the orientation of the Panoptix sonar view when
the transducer is installed with the cables pointing toward the
port side of the boat.
Beam Width: Sets the width of the Panoptix transducer beam.
Narrow beam widths allow you to see deeper and farther.
Wider beam widths allow you to see more coverage area.
Use AHRS: Allows the internal attitude heading and reference
system (AHRS) sensors to detect the installation angle of the
Panoptix transducer. When this setting is turned off, it is
assumed the transducer is installed at a 45-degree angle.
Sonar Frequencies
NOTE: The frequencies available depend on the chartplotter,
sounder modules, and transducer being used.
Adjusting the frequency helps adapt the sonar for your particular
goals and the present depth of the water.
Higher frequencies use narrow beam widths, and are better for
high-speed operation and rough sea conditions. Bottom
definition and thermocline definition can be better when using a
higher frequency.
Lower frequencies use wider beam widths, which can let the
fisherman see more targets, but could also generate more
surface noise and reduce bottom signal continuity during rough
sea conditions. Wider beam widths generate larger arches for
fish target returns, making them ideal for locating fish. Wider
beam widths also perform better in deep water, because the
lower frequency has better deep water penetration.
CHIRP frequencies allow you to sweep each pulse through a
range of frequencies, resulting in better target separation in
deep water. CHIRP can be used to distinctly identify targets, like
individual fish in a school, and for deep water applications.
CHIRP generally performs better than single frequency
applications. Because some fish targets may show up better
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