Garmin ECHOMAP PLUS 70 series Instrukcja obsługi - Strona 30
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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.
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.
1
From a sonar view, select MENU > Frequency.
2
Select a frequency suited to your needs and water depth.
For more information on frequencies, see
Frequencies, page
23.
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.
1
From a sonar view, select MENU > Frequency.
2
Select Add.
3
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
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.
24
NOTICE
Sonar
and a soft bottom
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.
1
From a RealVü sonar view, select MENU > Sweep Speed.
2
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
FrontVü Depth Alarm, page
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.
1
From a LiveVü or FrontVü sonar view, select MENU >
Transmit Angle.
2
Select an option.
Setting the FrontVü Depth Alarm
The FrontVü depth alarm is a tool for situational awareness only,
and may not prevent groundings in all circumstances. It is the
(Setting the
24). This is available only with
WARNING
Sonar Fishfinder