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9
GPS OPERATION (ADVANCED)
9-17
Transmitting NMEA data
Set a GPS sentence to transmit GPS data in the DV
mode�
D
Setting the GPS data sentence
1�
Open the NMEA SET screen.
»
GPS > GPS TX Mode >
NMEA
2�
Touch “GPS Sentence.”
3�
Select the GPS sentence.
•
Displays “
✓
” when the sentence is set to ON.
L
The selectable GPS sentences are RMC, GGA, GLL,
VTG, GSA, and GSV. The GGA sentence is set to
ON as the default GPS sentence.
L
To reset to the default setting, push
, and then
touch “Default.”
4�
Repeat step 3 to set the GPS sentence.
L
Up to 4 GPS sentences can be set at a time.
5�
To close the “GPS Sentence” screen, push
several times.
•
Returns to the standby screen, then
is
displayed.
NOTE:
•
Set “GSV Sentence” to “OFF” when sending the GPS
message to conventional digital transceivers. (p. 9-2)
•
If “Position Input” is set to “Manual,” the transceiver
automatically sets the NMEA sentence, and transmits
it along with the manually entered position data in
“Manual Position.”
» GPS > GPS Set >
Position Input
» GPS > GPS Set >
Manual Position
•
Note that if “GPS Auto TX” is set to any other option
than “OFF,” data is automatically transmitted according
to the set time�
» GPS >
GPS Auto TX
L
If “Position Input” is set to “Manual,” the GPS
Automatic Transmission function is not activated.
Contents of GPS sentence
Sentence
Lon
/Lat
Alt
UTC
Date
(UTC) Status
2D
/3D
COG
(True)
SOG
(knot)
Others
RMC
✔
✔
✔
✔
✔
✔
Magnetic variation, Mode Indicator
GGA
✔
✔
✔
✔
Number of satellites in use, HDOP,
Geoidal separation, Age of Differential
GPS data, Differential reference station ID
GLL
✔
✔
✔
Mode Indicator
VTG
✔
✔
COG (Magnetic north), SOG (km/h),
Mode Indicator
GSA
✔
✔
PRN number of satellites used in
solution, PDOP, HDOP, VDOP
GSV
Total number of sentences, Sentence
number, Total number of satellites in
view, Satellite information (ID, Elevation,
Azimuth, S/N)