Bedienungsanleitung Garmin VOLVO PENTA GLASS COCKPIT GPSMap 8000 (Seite 33 von 66) (Englisch)

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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 (Setting the FrontVü Depth Alarm,

page 26). 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.

Contour: Sets an alarm to sound when the transducer detects a

suspended target within the specified depth from the surface

of the water and from the bottom.

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.

Advanced Sonar Settings

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

Advanced.

Shift: Allows you to set the depth range on which the sonar is

focused. This allows you to zoom in a higher resolution in the

focused depth.

When using shift, bottom tracking may not work effectively,

because the sonar looks for data within the depth range of

the focused area, which may not include the bottom. Using

shift also can impact the scroll speed, because data outside

the depth range of the focused area is not processed, which

reduces the time required to receive and display the data.

You can zoom in to the focused area, which enables you to

evaluate target returns more closely at a higher resolution

than just zooming alone.

Echo Stretch: Adjusts the size of the echoes on the screen to

make it easier to see separate returns on the screen.

When targets are difficult to see

, echo stretch makes the

target returns more pronounced and easier to see on the

screen. If the echo stretch value is too high, the targets blend

together. If the value is too low

, the targets are small and

more difficult to see.

You can use echo stretch and filter width together to obtain

the preferable resolution and noise reduction. With echo

stretch and filter width set to low, the display has the highest

resolution, but is the most susceptible to noise. With echo

stretch set to high and filter width set to low, the display has a

lower resolution, but has wider targets. With echo stretch and

filter width set to high, the display has the lowest resolution,

but is the least susceptible to noise. It is not recommended to

set echo stretch to low and filter width to high.

Traditional, Garmin ClearVü, and SideVü Transducer

Installation Settings

From a Traditional, Garmin ClearVü, or SideVü sonar view,

select Menu > Sonar Setup > Installation.

Transmit Rate: Sets the length of time between sonar pings.

Increasing the transmit rate increases the scroll speed, but it

may also increase self-interference.

Reducing the transmit rate increases the spacing between

transmit pulses and can resolve self-interference. This option

is available on the Traditional sonar view only.

Transmit Power: Reduces transducer ringing near the surface.

A lower transmit power value reduces transducer ringing, but

can also reduce the strength of the returns. This option is

available on the Traditional sonar view only.

Filter Width: Defines the edges of the target. A shorter filter

more clearly defines the edges of the targets but may allow

more noise. A longer filter creates softer target edges and

may also reduce noise. This option is available on the

Traditional sonar view only.

Flip Left/Right: Switches the SideVü view orientation from left

to right. This option is available on the SideVü sonar view

only.

Restore Sonar Defaults: Restores the sonar settings to the

factory default values.

Transducer Diagnostics: Shows details about the transducer.

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

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 Frequencies

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

transducers.

You can indicate which frequencies appear on the sonar screen.

From a sonar view, select Menu > Frequency.

Sonar Fishfinder 25

Garmin VOLVO PENTA GLASS COCKPIT GPSMap 8000 Seite 33

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