Numeric
data
Depth
scale
Flasher
Current adjustment
option
Fish arches
(simulated)
Bottom
Thermocline
Frequency mode
B
ASIC
O
PERATION
>
U
SING
THE
S
ONAR
P
AGE
14
Fishfinder 250/250C Owner’s Manual
Using the Sonar Page
The Sonar page is where your Fishfinder 250/250C becomes a
powerful fishfinder/flasher. If the unit does not detect a transducer,
a “Sonar Turned Off” message is displayed on the Sonar page. If in
Simulator mode, a “Running Simulator” message appears.
You can adjust the unit’s backlight and contrast settings to improve
screen readability.
To change the backlight/contrast settings:
1. Press and release
POWER/BACKLIGHT
to display the
light/contrast adjustment window. The adjustment window
automatically disappears when idle for 20 seconds.
2. Press the Up or Down
ARROW
keys to change the backlight
setting. Press and release
POWER/BACKLIGHT
to toggle
the backlight setting between maximum, user-set, and
minimum brightness levels.
3. Press the Left or Right
ARROW
keys to change the contrast
setting.
4. Press
ENTER
to return to the Sonar page.
The currently selected adjustment option (page 17) is displayed in
the top left of the screen. Directly below the adjustment option, the
screen displays numeric data such as
Depth
,
Water Temperature
and
Water Speed
(pages 23-24). The middle of the page contains
a right-to-left moving sonar image of the water beneath your boat.
Items appear as they pass under your transducer. Items on the right
side of the screen are closer to you than those on the left. Along the
right side of the screen is a scale that reflects the depth of the area
being displayed.
