ComNav Vector G2/G2B Installation & Operation Configuration
Output Data Formats
There are three formats that the Vector G2 can output data in: the NMEA 0183
Standard’s format, a proprietary format, and a binary format.
For full details on the NMEA sentences, please refer to the NMEA 0183 Standard. For
details on the G2’s specific capabilities (fields, format, etc.) in the NMEA 0183 sentences,
please refer to the Hemisphere’s GPS Technical Reference (available on their web site).
NMEA 0183 Output
The following NMEA 0183 sentences are available on the G2.
Sentences enabled by the factory-default configuration are denoted like this, with the
update rate shown in the corresponding column. Sentences not enabled in the
factory-default configuration are indicated with an
X. Maximum output rates are shown in
the far right column, for convenience.
To make changes, see page 20.
Enabled
Sentence Description
Port A Port B
Max
Rate
GPDTM Datum Reference X X 10
GPGGA Global Positioning System Fix Data 1 X 10
GPGLL Geographic Position (Latitude & Longitude) 1 X 20
GPGNS GNSS Fix Data X X 10
GPGRS GNSS Range Residuals X X 10
GPGSA GNSS DOP & Active Satellites 0.2 X 1
GPGST GNSS Pseudorange Error Statistics 0.2 X 1
GPGSV GNSS Satellites in View 0.2 X 1
GPHDG True Heading, Variation & Deviation 1 X 20
GPHDM Magnetic Heading 1 1 10 20
GPHDT True Heading 1 10 20
GPRMC Recommended Minimum Specific GNSS Data 0.2 X 10
GPROT Rate of Turn 1 X 10
GPRRE Range Residual 1 X X 10
GPVTG Course and Speed Over Ground 1 1 10
GPZDA Time and Date 1 X 10
Table 6 – NMEA Output Sentences
1 Not approved by the IEC for Marine use
Note: all of these sentences are approved by the IEC for marine use, except for
the ones noted.
Note: the NMEA Talker ID for the three heading sentences above may be
changed from “GP” to “HE” for HDG & HDT and “HC’ for HDM. Doing so
indicates (per NMEA 0183’s syntax rules) that they come from a
North-seeking gyro heading sensor. The change can be made with the
$JATT,NMEAHE command (see Table 10 on page 22).
L Configuring the G2 to use the “HE” Talker ID is not recommended!
Document PN 29010078 V1.6 (Addendum #1) - 15 -
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