Garmin GPSMAP 421s 010-00764-01 Manuale Utente

Configuring the Chartplotter

8.  If you selected 

Near or Far in step 7, review the placement of 

the Auto Guidance line. Determine whether the line safely avoids 

known obstacles, and whether the turns enable efficient travel.

9.  Complete an action:

If the placement of the Auto Guidance line is satisfactory, 

select 

 > 

 > 

. 

Proceed to step 11.
If the Auto Guidance line is too close to known obstacles, 

from the Home screen, select 

 > 

 

> 

 > 

 > 

 > 

.

If the turns in the Auto Guidance line are too wide, from the 

Home screen, select 

 > 

 > 

 

> 

 > 

 > 

.

10. If you selected 

Nearest or Farthest in step 9, review the 

placement of the Auto Guidance line. Determine whether the line 

safely avoids known obstacles, and whether the turns enable 

efficient travel.

11. Repeat steps 1-10 at least once more, using a different 

destination each time, until you are familiar with the functionality 

of the Shoreline Distance setting.

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  To change the communications settings from the Home screen, 

select 

> 

.

Serial Port 1—configures the input/output format for serial port 1 to 

use when connecting your chartplotter to external NMEA devices, a 

computer, or other Garmin devices.

garmin data Transfer—supports the input or output of 

Garmin-proprietary data for communicating with Garmin 

software.
NMEa Standard—supports the input or output of standard 

NMEA 0183 data, DSC, and sonar NMEA input support for the 

DPT, MTW, and VHW sentences.
NMEa High Speed—supports the input or output of standard 

0183 data for most AIS receivers.

Serial Port 2 (if supported)—configures the input/output format for 

serial port 2 to use when connecting your chartplotter to external 

NMEA devices, a computer, or other Garmin devices.
NMEa 0183 Setup—enable or disable NMEA 0183 output 

sentences for sounder, route, system, and Garmin NMEA settings.

1.  From the Home screen, select 

 > 

 > 

.

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