Handleiding Garmin Echomap Plus serie (pagina 32 van 54) (Engels)

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CHIRP generally performs better than single frequency

applications. Because some fish targets may show up better

using a fixed frequency, you should consider your goals and

water conditions when using CHIRP frequencies.

Some sonar black boxes and transducers also provide the ability

to customize preset frequencies for each transducer element,

which enables you to change the frequency quickly using the

presets as the water and your goals change.

Viewing two frequencies concurrently using the split-frequency

view allows you to see deeper with the lower frequency return

and, at the same time, see more detail from the higher

frequency return.

Selecting the Transducer Frequency

NOTE: You cannot adjust the frequency for all sonar views and

transducers.

You can select which frequencies appear on the sonar screen.

NOTICE

Always be aware of local regulations on sonar frequencies. For

example, to protect orca whale pods, you might be prohibited

from using frequencies between 50 to 80 khz with in ½ mile of

an orca whale pod. It is your responsibility to use the device in

compliance with all applicable laws and ordinances.

From a sonar view, select MENU > Frequency.

Select a frequency suited to your needs and water depth.

For more information on frequencies, see Sonar

Frequencies, page 25.

Creating a Frequency Preset

NOTE: Not available with all transducers.

You can create a preset to save a specific sonar frequency,

which allows you to change frequencies quickly.

From a sonar view, select MENU > Frequency.

Select Add.

Enter a frequency.

Turning On the A-Scope

NOTE: This feature is available in the Traditional sonar views.

The a-scope is a vertical flasher along the right side of the view,

showing you what is underneath the transducer right now. You

can use the a-scope to identify target returns that may be

missed when the sonar data is quickly scrolling across the

screen, such as when your boat is moving at high speeds. It can

also be helpful for detecting fish that are close to the bottom.

The a-scope above shows fish returns and a soft bottom

return .

From a sonar view, select MENU > Sonar Setup >

Appearance > A-Scope.

Panoptix Sonar Setup

Adjusting the RealVü Viewing Angle and Zoom Level

You can change the viewing angle of the RealVü sonar views.

You can also zoom in and out of the view.

From a RealVü sonar view, select an option:

• To adjust the viewing angle, use the arrow keys.

• To zoom in and out, turn the knob.

Adjusting the RealVü Sweep Speed

You can update how quickly the transducer sweeps back and

forth. A faster sweep rate creates a less detailed image, but the

screen refreshes faster. A slower sweep rate creates a more

detailed image, but the screen refreshes more slowly.

NOTE: This feature is not available for the RealVü 3D Historical

sonar view.

From a RealVü sonar view, select MENU > Sweep Speed.

Select an option.

LiveVü Forward and FrontVü Sonar Menu

From the LiveVü Forward or FrontVü sonar view, select MENU.

Gain: Controls the level of detail and noise shown on the sonar

screen.

If you want to see the highest intensity signal returns on the

screen, you can lower the gain to remove lower intensity

returns and noise. If you want to see all return information,

you can increase the gain to see more information on the

screen. This also increases noise, and can make it more

difficult to recognize actual returns.

Depth Range: Adjusts the range of the depth scale.

Allowing the device to adjust the range automatically keeps

the bottom within the lower portion 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.

Forward Range: Adjusts the range of the forward scale.

Allowing the device to adjust the range automatically adjusts

the forward scale in relation to the depth. Manually adjusting

the range enables you to view a specified range. The bottom

can appear on the screen as long as it appears within the

range you have set. Manually reducing this option can reduce

the effectiveness of the FrontVü Alarm, reducing your

reaction time to low depth readings.

Transmit Angle: Adjusts the focus of the transducer to the port

or starboard side. This feature is available only with RealVü

capable Panoptix transducers, such as the PS30, PS31, and

PS60.

Sonar Transmit: Stops the active transducer from transmitting.

FrontVü Alarm: Sets an alarm to sound when the depth in front

of the vessel is less than the specified value (Setting the

FrontVü Depth Alarm, page 26). This is available only with

Panoptix FrontVü transducers.

Sonar Setup: Adjusts the setup of the transducer and the

appearance of the sonar returns.

Setting the LiveVü and FrontVü Transducer Transmit Angle

This feature is available only with RealVü capable Panoptix

transducers, such as the PS30, PS31, and PS60.

You can change the transducer transmit angle to aim the

transducer at a particular area of interest. For example, you

might aim the transducer to follow a bait ball or focus on a tree

as you pass it.

From a LiveVü or FrontVü sonar view, select MENU >

Transmit Angle.

Select an option.

Setting the FrontVü Depth Alarm

WARNING

The FrontVü depth alarm is a tool for situational awareness only,

and may not prevent groundings in all circumstances. It is the

26 Sonar Fishfinder

Garmin Echomap Plus serie Handleiding

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