Garmin 340c Manuale Proprietario

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ISHFINDER

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•  Depth Line—adds a horizontal depth line across the screen 

that is used to measure the depth of underwater objects. The 

depth of the line appears on the right side of the line. Press 

up or down on the Rocker to control the position of the line 

on the Sonar Pages. Move the slider to the top to turn off 

Depth Line.

•  Zoom—sets a screen zoom scale. The following settings are 

available: 

  Off—turns off the Zoom function.
  2x Zoom––displays the 2x zoomed picture.
  4x Zoom––displays the 4x zoomed picture.
  Btm (Bottom) Lock––displays the Bottom Lock (returns 

from the bottom up) picture. When using this setting, “BL” 

appears at the bottom of the screen.

•   Zoom View—available when you select a Zoom scale other 

than Off. You can use the Zoom View setting to change the 

viewing range of a zoomed display. Auto follows the water 

bottom. If you select Bottom Lock, use the Span setting to 

adjust how far off the bottom the Fishfinder displays data.

•  Tools—controls the display of useful sonar tools. The 

following options are available:

  A-scope—when you turn on A-scope, a vertical flasher 

bar appears on the far-right side of the screen. This flasher 

displays structure and bottom returns much the same as the 

Flasher Page. The horizontal width of the A-scope signal 

indicates the strength of the signal. 

  Color Bar—shows a gradient scale of the current Color 

Gain setting (see page 37).

  Temp Graph—appears only if you have a temperature-

capable transducer. This setting toggles on or off the display 

of a temperature graph on the bottom of a Sonar Page, and it 

matches the scrolling data.

•   Split When Zoomed—splits the screen when you use the 

Zoom option. If you turn on Zoom, then this setting splits the 

screen. If Zoom is Off and you turn on Split When Zoomed, 

the last used zoom level is used on the screen.

•  Swap Split—available on the Split Sonar Page when 

Frequency is set to Dual. This switches on which side the 

frequencies appear.