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GPSMAP 400/500 Series Owner’s Manual 51
Conguring the Chartplotter
If the turns in the Auto Guidance line are too wide, from the
Home screen, select Congure > Preferences > Navigation
> Auto Guidance > Shoreline Distance > Nearest.
8. If you selected Nearest or Farthest, review the placement of the
Auto Guidance line. Determine whether the line safely avoids
known obstacles, and whether the turns enable efcient travel.
9. Repeat steps 1-8 at least once more, using a different destination
each time, until you are familiar with the functionality of the
Shoreline Distance setting.
Conguring Communications Settings
To change the communications settings from the Home screen,
select Congure > Communications.
Serial Port 1—congures 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.
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NMEA High Speed—supports the input or output of standard
0183 data for most AIS receivers.
Serial Port 2—congures 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.
To enable or disable NMEA 0183 output sentences:
1. From the Home screen, select Congure > Communications >
NMEA 0183 Setup.
2. Select a setting (Sounder, Route, System, or Garmin).
3. Select the NMEA 0183 output sentence to toggle the output on or
off.
Posn. Precision—adjust the number of digits (Two Digits,
Three Digits
, or Four Digits) to the right of the decimal point
for transmission of NMEA output.
Waypoint IDs
—determine how the unit identies waypoint
identiers (Names or Numbers).
Defaults
—resets all NMEA 0183 sentences to the default setting.
NMEA 2000 Setup
NOTE: The GPSMAP 431/431s and GPSMAP 531/531s are not
NMEA 2000 compatible.
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