GPRMB, GPRMC, GPRTE, GPVTG, GPWPL, GPXTE, and Garmin proprietary sentences PGRME, PGRMM, and PGRMZ. This chartplotter also includes support for the WPL sentence, DSC, and sonar NMEA 0183 input with support for the DPT (depth) or DBT, MTW (water temperature), and VHW (water temperature, speed, and heading) sentences. NMEA 0183 Settings Select Settings > Communications > NMEA 0183 Setup . Sounder : Enables NMEA 0183 output sentences for the sounder (if applicable). Route : Enables NMEA 0183 output sentences for routes. System : Enables NMEA 0183 output sentences for system information. Garmin : Enables NMEA 0183 output sentences for Garmin proprietary sentences. Posn Precision :
Adjusts the number of digits to the right of the decimal point for transmission of NMEA output. Waypoint IDs : Sets the device to transmit waypoint names or numbers via NMEA 0183 while navigating. Using numbers may resolve compatibility issues with older NMEA 0183 autopilots. Diagnostics : Displays NMEA 0183 diagnostic information. Defaults : Restores the NMEA 0183 settings to the original factory defaults. 2 Select Settings > My Vessel > Keel Offset . 3 Select or based on the location of the transducer. 4 Enter the distance measured in step 1.
Setting the Water Temperature Offset Before you can set the water temperature offset, you must have a NMEA 0183 water-temperature sensor or a temperature- capable transducer to measure water temperature. The temperature offset compensates for the temperature reading from a temperature sensor. 1 Measure the water temperature using the temperature sensor or temperature-capable transducer that is connected to the chartplotter. 2 Measure the water temperature using a different temperature sensor or a thermometer that is known to be accurate. 3 Subtract the water temperature measured in step 1 from the water temperature measured in step 2. This is the temperature offset.
Enter this value in step 5 as a positive number if the sensor connected to the chartplotter measures the water temperature as being colder than it actually is. Enter this value in step 5 as a negative number if the sensor connected to the chartplotter measures the water temperature as being warmer than it actually is. 4 Select Settings > My Vessel > Temp. Offset . 5 Enter the temperature offset calculated in step 3. Setting Alarms Navigation Alarms Select Settings > Alarms > Navigation . Arrival : Sets an alarm to sound when you are within a specified distance or time from a turn or a destination. Anchor Drag : Sets an alarm to sound when you exceed a specified drift distance while anchored.
Off Course : Sets an alarm to sound when you are off course by a specified distance. System Alarms Alarm Clock : Sets an alarm clock. Device Voltage : Sets an alarm to sound when the battery reaches a specified low voltage. GPS Accuracy : Sets an alarm to sound when the GPS location accuracy falls outside the user-defined value. Communications Settings Units Settings Select Settings > Units . System Units : Sets the unit format for the device. Variance : Sets the magnetic declination, the angle between magnetic north and true north, for your present location. Heading : Sets the direction references used in calculating heading information. True sets geographic north as the north reference.
Grid sets grid north as the north reference (000є). Magnetic sets the magnetic north as the north reference. Position Format : Sets the position format in which a given location reading appears. Do not change this setting unless you are using a map or chart that specifies a different position format. Map Datum : Sets the coordinate system on which the map is structured. Do not change this setting unless you are using a map or chart that specifies a different map datum. Pressure Ref. Time : Sets the reference time used to calculate the barometer trend. The trend is indicated in the barometer field. Time Format : Sets a 12-hour, 24-hour, or UTC time format. NOTE:
Some settings and options require additional charts or hardware. Select Settings > Communications . Serial Port : Sets the input/output format for the serial port to use when connecting the chartplotter to external NMEA devices, computers, or other Garmin devices. NMEA 0183 Setup : Sets the NMEA 0183 sentences the chartplotter transmits, how many digits to the right of the decimal point are transmitted in a NMEA output, and how waypoints are identified ( NMEA 0183 Settings , page 20 ). NMEA 0183 The chartplotters support the NMEA 0183 standard, which is used to connect various NMEA 0183 devices, such as VHF radios, NMEA instruments, autopilots, wind sensors, and heading sensors.
To connect the chartplotter to optional NMEA 0183 devices, see the chartplotter installation instructions. The approved NMEA 0183 sentences for the chartplotter are GPAPB, GPBOD, GPBWC, GPGGA, GPGLL, GPGSA, GPGSV, 20 Device Configuration