Garmin 5008 Manuale Utente

Using Sonar

To adjust advanced sonar settings, select 

 while viewing a sonar screen.

Gain—controls the sensitivity of the sonar receiver (Auto or, to adjust manually, Up or Down). To 

see more detail, increase the gain. If the screen is cluttered, decrease the gain.
Sonar Scroll—select to stop scrolling. Select 

 to save the location as a waypoint, 

and select 

 to continue scrolling in real time. For more information on waypoints, see 

 

.

Frequency—selects how the frequencies appear on screen (200kHz, 50kHz, or Dual).
Zoom—zoom in to a section of the Full Screen. The zoom is off, or set to No Zoom, by default. 

Four options are available:

2x Zoom—twice the magnification. Select 

, 

, or 

 to set the depth range of the 

magnified area.
4x Zoom—four times the magnification. Select 

, 

, or 

 to set the depth range of the 

magnified area.
Bottom Lock—locks the zoom window to the bottom. Select 

, 

, or 

 to set the 

depth range of the magnified area.
No Zoom—turns zooming off.

Depth Line—quickly reference a specific depth (Show or Hide). When Show is selected, press 

up or down on the 

 (GPSMAP 4000 series) or touch and drag the line (GPSMAP 5000 

series) to set the depth of the reference line.
Range—the range of the depth scale on the right side of the screen (Auto, or to adjust manually, Up 

or Down

.

Sonar Setup—opens the Sonar Setup screen. See