Changing The Sonar View - Garmin echoMAP CHIRP 40 Owner's Manual

RealVü 3D Down Sonar View
This sonar view shows a three-dimensional view of what is
below the transducer and can be used when you are stationary
and want to see what is around your boat.
RealVü 3D Historical Sonar View
This sonar view provides a three-dimensional view of what is
behind your boat as you are moving and shows the entire water
column in 3D, from the bottom to the top of the water. This view
is used for finding fish.
Color legend
Boat
Range
Bottom
Structure
Fish
FrontVü Sonar View
The Panoptix FrontVü sonar view increases your situational
awareness by showing obstructions under the water, up to
91 meters (300 feet) in front of the boat.
The ability to effectively avoid forward collisions with FrontVü
sonar decreases as your speed rises above 8 knots.
To see the FrontVü sonar view, you must install and connect a
compatible transducer, such as a PS21 transducer. You may
need to update the transducer software.

Changing the Sonar View

1
From a combination screen with sonar, select MENU > Edit
Combination.
2
Select the window to change.
3 Select a sonar view.
Selecting the Transducer Type
Before you can select the transducer type, you must know what
kind of transducer you have.
This chartplotter is compatible with the Garmin ClearVü
transducer as well as a range of accessory transducers
including Garmin GT transducers, which are available at
www.garmin.com.
If you are connecting a transducer that was not included with the
chartplotter, you may need to set the transducer type to make
the sonar function properly. If the device automatically detected
your transducer, this option does not appear.
1
From a sonar view, select MENU > Sonar Setup >
Installation > Transducer Type.
2
Select an option:
18
• If you have a 200/77 kHz, dual-beam transducer, select
Dual Beam (200/77 kHz).
• If you have a 200/50 kHz, dual-frequency transducer,
select Dual Frequency (200/50 kHz).
• If you have another type of transducer, select it from the
list.
Calibrating the Compass
Before you can calibrate the compass, the transducer must be
installed on the shaft far enough away from the trolling motor to
avoid magnetic interference, and deployed in the water.
Calibration must be of sufficient quality to enable the internal
compass.
NOTE: To use the compass, you must mount the transducer on
the shaft. The compass does not work when you mount the
transducer on the motor.
NOTE: Compass calibration is available only for transducers
with an internal compass.
You can begin turning your boat before calibrating, but you must
fully rotate your boat 1.5 times during calibration.
1
From a ForwardVü or LiveVü Forward sonar page, select
MENU > Sonar Setup > Installation.
2
If necessary, select Use AHRS.
3
Select Calibrate Compass.
4
Follow the on-screen instructions.
Creating a Waypoint on the Sonar Screen
1
From a sonar view, select Pause Sonar.
2
Select a location.
3 Select or
4 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.
NOTE: Not all transducers save historical sonar data.
1
From a sonar view, select MENU > Pause Sonar.
2
Use the arrow keys.
™
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 Garmin ClearVü 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.
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Sonar