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Page 120 9 — Installation and Interfacing
9 — Installation and Interfacing9 — Installation and Interfacing
9 — Installation and Interfacing Rev. D
The meaning of the NMEA 0183 three-letter identifiers are:
0183
IDENTIFIER
MEANING
APB Autopilot Sentence “B”
BOD Bearing to Destination
BWC Bearing & Distance to Wpt. (Great Circle)
GGA GPS Fix Data
GLC Geographic Position, Loran-C
GLL Latitude/Longitude
GSA GPS DOP and Active Satellites
GSV GPS Satellites In View
HSC Heading Steering Command
RMA Recommended Min. Sentence A
RMB Recommended Min. Sentence B
RMC Recom. Min. Specific GPS/Transit Data
RNN Navigation Route
VTG SOG/COG
WCV Waypoint Closure Velocity (SOA)
WPL Waypoint Location
XTE Cross-track Error
ZDA Estimated Time of Arrival
ZTG Time-To-Go
Table 4—NMEA 0183 Sentence Identifiers
(PORT 1 / PORT 2 SETUP)
(PORT 1 / PORT 2 SETUP)(PORT 1 / PORT 2 SETUP)
(PORT 1 / PORT 2 SETUP)
Part of the NMEA 0183 standard requires that the equipment you are
interfaced to—the “listener”—know what type of device is transmitting
the data. The talker ID tells the listener that it is receiving information
from a navigation source (the 941X) and not a communications or sensor
device, which transmit completely different—and therefore unusable—
forms of data.
The “talker ID” enables you to configure the 941X’s output data to tell the
listener it is receiving data from a loran (
LC
) or GPS (
GP
) navigator, or
Integrated Instrumentation (
II
). The choice you make depends on what
NMEA 0183
talker ID