3. ADJUSTMENTS
3-10
3.5 Input/Output Signal
The GP-170 can receive or output various navigation data.
Before selecting data to output, confirm what data the external equipment requires.
Output necessary data only. Outputting unnecessary data can cause receiving prob-
lems at the external equipment.
3.5.1 Talker
All data transmitted by marine electronics equipment is prefixed with a two-character
code which tells external equipment what equipment is transmitting data. This two-
character code is called the talker. The GP-170 contains the talkers GP and GN.
3.5.2 Input/Output sentence
Output sentence of IEC 61162-1 Ed.3/4 and NMEA 0183 Ver. 1.5/2.0
Sentence Description
AAM Wayopint arrival alarm
ALC Cyclic alert list
ALF Alert sentence
ALR Set alarm state
APA* Autopilot sentence A
Magnitude of cross track error, direction to steer, arrival alarm, bearing or-
igin to destination
APB Autopilot sentence B
Magnitude of cross track error, direction to steer, arrival alarm, bearing to
waypoint
("Heading to steer to destination waypoint data" not used)
ARC Alert command refused
BOD Bearing origin to destination
BWC Bearing and distance to waypoint - great circle
BWR Bearing and distance to waypoint - rhumb line
BWW Bearing waypoint to waypoint
DTM Datum reference
GBS GNSS satellite fault detection
GGA Global positioning system (GPS) fix data
Time of fix, latitude, longitude, quality indicator, number of satellites in
use, DOP, altitude, geoidal separation
("age of dgps data" and "differential reference station ID")
GLL Geographic position - latitude/longitude
GNS GNSS fix data
GRS GNSS range residuals
GSA GNSS DOP and active satellites
GST GNSS pseudorange noise statistics
GSV GNSS satellites in view
HBT Heartbeat supervision sentence
MSK MSK receiver interface
MSS MSK receiver signal status
POS Device position and ship dimensions report or configuration command
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