Garmin gpsmap 400 Manuale Utente

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Transducer—select the transducer type (Dual Frequency or Dual 

beam), set the temperature source, sonar cone angles, and calibrate 

water speed.

•  Temp Source—set the temperature source (

 or 

).

•  Sonar Cone Angles—when using a transducer other than the 

standard Garmin transducer, you can set the angle, in degrees, 

of the sonar cone so it is accurately depicted on the Fish Eye 

3D screen. 

  NOTE: The Sonar Cone Angles setting does not affect a 

standard Garmin transducer, and should only be used to match 
the specifications of a non-standard transducer.

•  Calibrate Water Speed—to use a speed sensing transducer, 

use this menu to calibrate the speed sensor. If you do not have 

a speed sensing transducer, this menu does not appear.

1.  From the Home screen, select

>

>

>

.

2.  Bring the boat to cruising speed. Note your top speed, and

then stop the boat.

3.  Highlight

, and press

.

  NOTE: If the boat is not moving fast enough or the speed sensor 

is not registering a speed, a “Speed Too Low” message appears. 

Highlight OK, press SELECT, and safely increase boat speed. If 

you get the message again, stop the boat and make sure the speed 

sensor wheel is not stuck. If the wheel turns freely, check the 

cable connections. If you continue to get the message, contact 

Garmin Product Support.