Garmin Fishfinder 320C, Owner'S Manual And Reference Manual

10

Using the Adjustment Menu

The Adjustment Menu allows direct access to the settings and features most commonly used on the 

Sonar Page. There are 10 main adjustment options available: Range, Zoom, View, Gain, Target Level, 
Whiteline, Frequency, Depth Line, Noise Reject, and Scroll. All adjustments may be made by using the 

ARROW KEYPAD 

and

 ENTER

 key. The currently selected option will appear in the upper left of the 

display with an up and down arrow on each side of the name.

To change an Adjustment Menu setting:

1.  Press the 

MENU

 key to bring up a list of all options and their current settings. The adjustment window 

will automatically time-out and disappear when idle for 20 seconds or you may press 

QUIT

to exit. High-

light the desired option to change and press 

ENTER

 to bring up the Adjustment window. Alternately, 

press the dedicated 

ZOOM

,

FREQ

,

GAIN

 or 

RANGE

 key to adjust the desired option.

2.  With the 

ARROW KEYPAD

, move UP or DOWN and place the setting bar (or pointer) at the desired per-

centage (Off, 1-100%), setting or range. When changing most adjustments, an open space will appear 
on the scale to show where the of ‘Normal’ or default setting would appear. Once set to ‘Normal’, the 
setting bar will be replaced by the word ‘Normal’.

3.   Press 

ENTER

 or 

QUIT

 to accept the new setting and return to the sonar graph. 

For users accustomed to other Garmin sonar products, the current adjustment will appear in the upper 

left corner. For fast adjustment from the Sonar Page, press LEFT or RIGHT on the 

ARROW KEYPAD

 to 

scroll through the options, then press UP or DOWN on the 

ARROW KEYPAD

 to immediately change the 

current option or the 

ENTER

 key to review the current setting before making changes.

Adjustment Options

The Adjustment Menu allows direct access to the settings and features most commonly used. These 

available adjustments are:

• Range —

 sets the display depth range used for viewing. The unit can be set to automatically track the 

bottom or set to a user-specifi ed depth range (see “Custom Range” pg. 16).

• Zoom —

 used to quickly select a display zoom scale or to split the display. When a scale other than 

‘No Zoom’ is selected, the Adjustment Menu will display a new selection labeled View or Span. 

Adjustment Menu options

Adjustment

window

Current option

Pointer

Current 
adjustment
setting

‘Normal’ 
setting
area

Unit Operation

Adjustment Menu Options

320C Manual.indd   10

3/11/2003, 11:37:17 AM