Chapter 3: Using the Sounder Module 29
Soft Key Selections
The soft keys presented on the main fishfinder screen provide selections for the
most commonly used operations.
3.4 Fishfinder Settings
The system automatically adjusts the following settings to optimize the fishfinder
image:
• Gain modes (Gain, Color Gain, TVG)
• Operating frequency
• Power setting
These settings should not ordinarily require adjustment. However, you can
however make adjustments manually if desired.
Gain Modes
The fishfinder provides GAIN controls to reduce background noise and determine
how different strength echoes are shown. By default, the sounder automatically
adjusts the gain controls, based on depth and water conditions, and displays the
sharpest possible image.
Although you can also manually adjust these settings, Raymarine recommends
that you retain the AUTO setting to achieve the best results.
All of the GAIN settings are reset at power-on.
Note:
In addition to the controls described in this section, the Fishfinder Setup menu op-
tions enable you to adjust the Interference Rejection, 2nd Echo Interference Rejection and
Ping Rate. These options are described on page 45.
D7935-2
ZOOM
BOTTOM
LOCK
A-SCOPE PRESENTATION
FISHFINDER
SETTINGS
D8222-2
GAIN
FREQUENCY
AUTO MAN
SELECTED FREQ
200 50 BOTH
POWER
AUTO MAN
D8223-1
GAIN MODE
AUTO MAN
AUTO GAIN
LO MED HI
COLOR GAIN
AUTO MAN
TVG
AUTO MAN
81254.book Page 29 Monday, March 6, 2006 2:29 PM
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