New Transducers 250C 用户手册

2x Zoom 

view

Normal view

Depth Line

B

ASIC

 O

PERATION

 > 

U

SING

 

THE

 A

DJUSTMENT

 M

ENU

Adjustment Menu

The following adjustments can be made from the Adjustment Menu:

•  Range—sets the display depth range used for viewing. The 

unit can be set to automatically track the bottom or set to a 

user-specified depth range (see “Custom Range” on page 22).

•  Zoom—quickly selects a display zoom scale or to split the 

display.  When a scale other than No Zoom is selected, the 

View or Span options are activated in the Adjustment Menu.

The Zoom function includes the following seven settings: 

  No Zoom––displays the sonar picture with no zoom.
  2x Split––shows two reduced-size sonar pictures at the same 

time. The right half of the display screen shows the complete 

sonar picture at its original scale. The left half shows a portion 

of the original picture at 1/2 depth scale.

  2x Zoom––displays the 2x zoomed picture on the full screen 

and does not show the original scale picture.

  4x Split––shows two reduced pictures, the right at the original 

depth scale and the left at 1/4 the original depth scale.

  4x Zoom––displays only the 4x zoomed picture on the full 

screen.

Sonar 2x split screen (shown with Depth Line)