Reducing The Clutter - Garmin FF 350 Plus Owner's Manual

Reducing the Clutter

You can quickly change the settings to reduce noise and clutter
on the sonar screen.
1
From a sonar view, hold CLUTTER.
2
Select one or more options:
• To adjust the sensitivity to reduce the effects of
interference from nearby sources of noise, select
Interference.
• To hide sonar returns near the surface of the water, select
Surface Noise.
• To adjust the time varying gain, which can reduce noise,
select TVG.
Sonar Frequencies
NOTE: The frequencies that are available depend on the
transducer being used.
Adjusting the frequency helps adapt the sonar for your particular
goals and the present depth of the water.
Selecting Frequencies
NOTE: You cannot adjust the frequency for all sonar views and
transducers.
You can indicate which frequencies appear on the sonar screen.
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 4.
Sonar Gain
The gain setting controls the sensitivity of the sonar receiver to
compensate for water depth and water clarity. Increasing the
gain shows more detail, and decreasing the gain reduces screen
clutter.
NOTE: Setting the gain on one sonar view applies the setting to
all the views.
Setting the Gain Automatically
NOTE: To set the gain on the split-frequency screen, you must
set each frequency separately.
1
From a sonar view, select GAIN.
2 Select > Enable Auto Gain.
3 Select an option:
4
• To display higher-sensitivity, weaker sonar returns with
• To display medium-sensitivity sonar returns with moderate
• To display lower-sensitivity sonar returns with less noise
Setting the Gain Manually
1
From a sonar screen, select GAIN.
2
Select
portion of the screen.
3
Select
Adjusting the Range of the Depth Scale
You can adjust the range of the depth scale that appears on the
right side of the screen. Automatic ranging keeps the bottom
within the lower third of the sonar screen, and can be useful for
tracking the bottom where there are slow or moderate terrain
changes.
When the depth changes dramatically, like a drop off or cliff,
manually adjusting the range allows a view of a specified depth
Sonar
range. The bottom is shown on the screen as long as the bottom
is anywhere within the manual range established.
1
From a sonar screen, select RANGE.
2
Select an option:
• To allow the device to adjust the range automatically
• To increase or decrease the range manually, select
NOTE: From a sonar screen, select
manually adjust the range.
Showing and Customizing the Overlay
Numbers
You can customize the data shown on the screen.
1 From an applicable screen, select MENU.
more noise automatically, select Auto High.
noise automatically, select Auto Med.
automatically, select Auto Low.
or until you begin to see noise in the water
or to decrease the gain.
based on the depth, select Auto Range.
.
or
and to quickly
Sonar