34 GPSMAP 620 Owner’s Manual
Marine Mode: Advanced Conguration
Time—change time settings.
Time Format—
set the time format (12 hour, 24 hour, or UTC)
for time readings.
Time Zone
—set the time zone displayed for time readings.
Conguring Communications Settings
From the Home screen, touch Congure > Communications.
Port Types
—select the input/output format (Garmin Data
Transfer, NMEA Std. or NMEA High Speed) for each port to
use when connecting your unit to external NMEA devices, to a
computer, or to other Garmin devices.
Garmin Data Transfer
—a proprietary data transfer protocol
that is used to interface with Garmin computer programs.
NMEA Std.
—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 high
speed 0183 data for most AIS receivers.
NMEA 0183 Setup
—enable or disable NMEA 0183 output for
route sentences, system sentences, and adjust Garmin NMEA
settings.
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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
—select how the unit outputs waypoint identiers
(Names or Numbers).
Enabling or Disabling NMEA 0183 Output
Sentences
1. From the Home screen, touch Congure > Communications >
NMEA 0183 Setup.
2. Touch a setting (Route, System, or Garmin).
3. Touch the NMEA output sentence.
4. Touch Off to disable, or touch On to enable, the NMEA 0183
output sentence.
Conguring Alarm Settings
You can congure the GPSMAP 620 to alert you when certain
events occur.
Setting Navigation Alarms
From the Home screen, touch Congure > Alarms > Navigation.
Arrival
—sets an alarm to sound when you arrive at a
predetermined point.
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