Icom IC-705 Advanced Manual english - Page 112

Transmitting NMEA data, Setting the GPS data sentence

Page 112 highlights

12. GPS OPERATION (ADVANCED) Transmitting NMEA data Set a GPS sentence to transmit GPS data in the DV mode. DDSetting the GPS data sentence 1. Open the NMEA SET screen. » GPS > GPS TX Mode > NMEA 2. Touch "GPS Sentence." 3. Select the GPS sentence. NOTE: •• Set "GSV Sentence" to "OFF" when sending the GPS message to conventional digital transceivers. (p. 12-2) •• 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 LLIf "GPS Select" is set to "OFF" or "Manual," the GPS Automatic Transmission function is not activated. •• Displays "✓" when the sentence is set to ON. LLThe selectable GPS sentences are RMC, GGA, GLL, VTG, GSA, and GSV. The GGA sentence is set to ON as the default GPS sentence. LLTo reset to the default setting, push , and then touch "Default." 4. Repeat step 3 to set the GPS sentence. LLUp 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. Contents of GPS sentence Sentence Lon /Lat Alt UTC Date (UTC) Status 2D /3D COG SOG (True) (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) 12-18

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12-18
12�
GPS OPERATION (ADVANCED)
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� 12-2)
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
L
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)