4. Operation 
4-1 
4. Operation 
 
4.1 Basic Operation 
  Turning Power ON/OFF   
・ To turn on power, press the   button. 
・  To turn off power, press the 
 button. A confirmation screen whether to turn off the power will be 
displayed. Touch the ✓ button. 
 
  Adjusting Control Panel Illumination [DIM+/DIM-]           
・ On echo sounder working adjust the brightness with  ,   on the screen. 
・ The brightness of the screen can be adjusted to 16 levels in each mode (DAY/DUSK/NIGHT). 
・ Whenever 
  is touched, brightness goes up and Whenever    is touched, brightness goes down. 
 
  Range Control [RANGE]   
・ The range change of this equipment is eight stages of 5,10, 20, 50,100,200,500,800m. 
・ Touch 
  on main screen. The button color change to green and range menu is displayed. 
・ Range mode is displayed on the right side of main screen. 
・ Auto or manual range mode can be set with each 
   touch. 
・ Whenever 
  is touched, the range is switched to the deep end. 
・ Whenever 
  is touched, the range is switched to shallow one. 
・  When touch 
 or  ,  , auto range mode is released automatically and switch to the manual 
range. 
・ When auto range mode is canceled, the range setting is continued and doesn’t return before the auto range 
mode. 
・ After setting the range. touch green RANGE button and range menu is closed. 
Note 
・ Sea bottom might not be displayed according to the setting of draft.   
・ When sea bottom is not displayed, depth is not displayed. 
・ Auto range automatically switches the range so that the bottom 3/5 of the range scale shows the sea bottom.