gain yourself, the Echosounder automatically changes to
Manual mode.
Use Cruising mode when you're traveling at speed.
7.5 Echosounder: Colors
You can change the colors (the 'palette') used to represent detail
on your
Echosounder.
White is the default day time setting, black is the default night
time setting.
¾
To change the Echosounder colors
• Display the Echosounder pane and the main menu. If you can't
see the
Palette button, select Settings.
• The
Palette button shows the current setting. Select it to
change the setting.
7.6 Echosounder: Scroll speed
The Echosounder pane doesn't show a fixed distance traveled by
your vessel; instead, it shows what's passed below the keel over a
period of time. This is called the history.
The history is affected by two variables.
• The depth of water. In shallow water, the sonar signals have
only a short distance to travel, so the
Echosounder pane shows
a history that covers only a brief period of time and moves
quickly. In deeper water, the sonar signals have a much
longer distance to travel so the
Echosounder pane shows a
history that covers a longer period of time and moves more
slowly.
• The scroll speed. You can change this setting so that the
Echosounder pane shows a longer history with less fish detail,
or a shorter history with more fish detail.
Note: If another GB40 display unit is operating the
Echosounder at a different frequency to you, the scroll speed
will slow.
If you're looking for fish, a faster scroll speed combined with a
slow boat speed - typically between 2 and 6 knots - generally
produces the best fish detail.
94 | Echosounder
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