New Transducers 250C ユーザーズマニュアル

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

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.

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.