246
406388/F
NMEA Sentence
Select which NMEA, third party or proprietary datagram format to be used for
the communication.
•
Auto
The TV80 will read all relevant datagrams. If the specified information is
provided to the system on more than one telegram format, a built-in priority
list will be used.
•
NMEA HDT
The NMEA HDT datagram provides the true vessel heading. The information is
normally provided by a course gyro.
•
NMEA HDM
The NMEA HDM datagram provides vessel heading in degrees magnetic. The
datagram is no longer recommended for use in new designs. It is often replaced
by the NMEA HDG telegram.
•
NMEA HDG
The NMEA HDG datagram provides heading from a magnetic sensor. If this
reading is corrected for deviation, it produces the magnetic heading. If it is
offset by variation, it provides the true heading.
•
NMEA VHW
The NMEA VHW datagram contains the compass heading to which the vessel
points, and the speed of the vessel relative to the water.
Talker ID
If you want to specify a dedicated Talker ID for the datagram format, it can be
defined here. Every NMEA datagram starts with a dollar ($) character. The "talker
identifier" (ID) with two characters follows immediately after the dollar character.
The Talker ID is followed by three characters that define the
type
of datagram.
The Talker ID identifies the system that
sends
the datagram. When no Talker ID
is defined, all identifiers are accepted.
Related topics
Navigation dialog box, page 242
Simrad TV80 Reference Manual
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