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Sonar Sharing

This feature may not be available on all chartplotter models.

You can view the sonar data from other chartplotters with a 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 a transducer with DownVü

mounted at the back of the boat, you can view the sonar data

using the GPSMAP 741 mounted at the front of your boat.

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.

Open the sonar view for which you will change the source.

Select Menu > Sonar Setup > Source.

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.

From the sonar view, select Menu > Sonar Setup > Source

> Rename Sources.

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.

From a sonar view, select Menu > Sonar Setup > Overlay

Numbers.

If necessary, select the numbers to customize.

Select the toggle to show or hide each data item.

Select Back to customize more data.

NOTE: You can also show or hide the compass tape and

navigation inset.

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 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.

From a sonar view, select Menu.

Select Gain or Brightness.

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.

From a sonar view, select Menu.

Select an option:

• While in the DownVü or SideVü sonar view, select

Contrast.

• While in a Panoptix LiveVü sonar view, select Color Gain.

• While in another sonar view, select Sonar Setup >

Advanced > Color Gain.

Select an option:

• To increase or decrease the color intensity manually,

select Up or Down.

• To use the default setting, select Default.

Adjusting the Range of the Depth or Width

Scale

You can adjust the range of the depth scale traditional and

DownVü sonar views and the range of the width scale for the

SideVü sonar view.

Allowing the device to adjust the range automatically keeps the

bottom within the lower or outer third of the sonar screen, and

can be useful for tracking a bottom that has minimal or moderate

terrain changes.

Manually adjusting the range enables you to view a specified

range, which can be useful for tracking a bottom that has large

terrain changes, such as a drop-offs or cliffs. The bottom can

appear on the screen as long as it appears within the range you

have set.

From a sonar view, select Menu > Range.

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.

Setting the Zoom Level on the Sonar Screen

From a sonar view, select Menu > Zoom.

Select an option:

• To zoom in on the sonar data from the bottom depth,

select Bottom Lock.

Sonar