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12-17
12. GPS OPERATION (ADVANCED)
Transmitting NMEA data
Set a GPS sentence to transmit GPS data in the
DV mode.
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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.
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The selectable GPS sentences are RMC, GGA,
GLL, VTG, GSA, and GSV. The GGA sentence
is set to ON as the default GPS sentence.
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To reset to the default setting, push
, and
then touch “Default.”
4. Repeat step 3 to set the GPS sentence.
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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. 12-1)
• If “GPS Select” 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 >
GPS Select
» 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
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If “GPS Select” is set to “OFF” or “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)