Sonar Alarms; Advanced Sonar Settings; Transducer Installation Settings - Garmin Volvo Penta GLASS COCKPIT 8x10 Owner's Manual

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.
Overlay Data: Sets the data shown on the sonar screen.

Sonar Alarms

The sonar alarms feature is a tool for situational
awareness only and may not prevent grounding in
all circumstances. It is your obligation to ensure safe
operation of the vessel.
The Beeper setting must be turned on to make alarms
audible (Sounds and Display Settings, page
to set audible alarms could lead to injury or property
damage.
NOTE: Not all options are available on all transducers.
From an applicable sonar view, select Options > Sonar
Setup > Alarms.
You can also open the sonar alarms by selecting Options
> 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
the FrontVü Depth Alarm, page
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.
44
WARNING
CAUTION
81). Failure
(Setting
46). This alarm is
• 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 Options > 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.
Btm. Srch. Limit: Limits the search for the bottom to
the depth selected when the Range setting is set to
Auto. To minimize the length of time it takes to find the
bottom, you can select a depth to limit the search for
the bottom. The device will not search for the bottom
deeper than the selected depth.

Transducer Installation Settings

These settings apply to the following types of sonar.
• Traditional
• Garmin ClearVü
• Garmin SideVü
From an applicable sonar view, select an option.
• From a Traditional sonar view, select Options > Sonar
Setup > Installation.
• From a Garmin ClearVü sonar view, select Options >
ClearVü Setup > Installation.
• From a Garmin SideVü sonar view, select Options >
SideVü 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
Sonar Fishfinder