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Split-Zoom Sonar View
The split-zoom sonar view shows a full-view graph of sonar
readings, and a magnified portion of that graph, on the same
screen.
Split-Frequency Sonar View
In the split-frequency sonar view, one side of the screen shows
a full-view graph of high frequency sonar data, and the other
side of the screen shows a full-view graph of lower frequency
sonar data.
NOTE: The split-frequency sonar view requires the use of a
dual-frequency transducer.
Creating a Waypoint on the Sonar Screen
1
From a sonar view, select a location.
2
Select .
3
If necessary, edit the waypoint information.
Measuring Distance on the Sonar Screen
You can measure the distance between two points on the
SideVü sonar view.
1
From the SideVü sonar view, select a location on the screen.
2
Select .
A push pin appears on the screen at the selected location.
3
Select another location.
The distance and angle from the pin is listed in the upper-left
corner.
TIP: To reset the pin and measure from the current location of
the pin, select .
Pausing the Sonar Display
From a Sonar view, select MENU > Pause Sonar.
Viewing Sonar History
You can scroll the sonar display to view historical sonar data.
1
From a sonar view, select MENU > Pause Sonar.
2
Drag the screen or use the arrow keys.
Sonar Sharing
This feature may not be available on all chartplotter models.
You can view the sonar data from other chartplotters with built-
in sonar module connected on the Garmin Marine Network.
Each chartplotter on the network can display sonar data from
every compatible sonar module and transducer on the network,
no matter where the chartplotters and transducers are mounted
on your boat. For example, from the GPSMAP 1020xs mounted
at the back of the boat, you can view the sonar data from an
echoMAP™ 70dv mounted at the front of your boat.
Chartplotters can only display sonar types they are compatible
with. For example, the echoMAP 50dv and GPSMAP 547 can
display traditional and DownVü data, but not SideVü data.
When sharing sonar data, the values of some sonar settings,
such as Range and Gain are synchronized across the devices
on the network. The values of other sonar settings, such as the
Appearance settings, are not synchronized and should be
configured on each individual device. In addition, the scroll rates
of the various traditional and DownVü sonar views are
synchronized to make the split views more cohesive.
NOTE: Using multiple transducers simultaneously can create
cross talk, which can be removed by adjusting the Interference
sonar setting.
Selecting a Sonar Source
This feature may not be available with all models.
When you are using more than one sonar data source for a
particular sonar view, you can select the source to use for that
sonar view. For example, if you have two sources for DownVü,
you can select the source to use from the DownVü sonar view.
1
Open the sonar view for which you will change the source.
2
Select MENU > Sonar Setup > Source.
3
Select the source for this sonar view.
Renaming a Sonar Source
You can rename a sonar source to easily identify that source.
For example, you use "Bow" as the name of the transducer on
the bow of your boat.
The source is renamed for the present view only. For example,
to rename the DownVü sonar source, you must open the
DownVü sonar view.
1
From the sonar view, select MENU > Sonar Setup > Source
> Rename Sonar Source.
2
Enter the name.
Customizing the Overlay Numbers
You can customize the data shown on the sonar screen of
some chartplotter models.
NOTE: Not all options are available on all models.
1
From a sonar view, select MENU > Sonar Setup > Overlay
Numbers.
2
If necessary, select the numbers to customize.
3
Select the toggle to show or hide each data item.
4
Select BACK to customize more data.
NOTE: You can also show or hide the compass tape and
navigation inset.
5
Select Done.
Adjusting the Level of Detail
You can control the level of detail and noise shown on the sonar
screen either by adjusting the gain for traditional transducers, or
by adjusting the brightness for DownVü and SideVü/DownVü
transducers.
If you want to see the highest intensity signal returns on the
screen, you can lower the gain or brightness to remove lower
intensity returns and noise. If you want to see all return
information, you can increase the gain or brightness to see
more information on the screen. This also increases noise, and
can make it more difficult to recognize actual returns.
1
From a sonar view, select MENU.
2
Select Gain or Brightness.
3
Select an option:
• To increase or decrease the gain or brightness manually,
select Up or Down.
• To allow the chartplotter to adjust the gain or brightness
automatically, select an automatic option.
Adjusting the Color Intensity
You can adjust the intensity of colors and highlight areas of
interest on the sonar screen by adjusting the color gain for
traditional transducers or the contrast for DownVü and SideVü/
DownVü transducers. This setting works best after you have
adjusted the level of detail shown on the screen using the gain
or brightness settings.
If you want to highlight smaller fish targets or create a higher
intensity display of a target, you can increase the color gain or
contrast setting. This causes a loss in the differentiation of the
high intensity returns at the bottom. If you want to reduce the
intensity of the return, you can reduce the color gain or contrast.
1
From a sonar view, select MENU.
14 Sonar