Operating Instructions and Installation Instructions

ComNav Vector G2/G2B Installation & Operation Operation
Document PN 29010078 V2.0 - 46 -
DRAFT #3 – 29 May 2009
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 GPS Technical Reference.
NMEA 0183 Output
Many of the NMEA 0183
Standard’s “n
avigation & GPS data” sentences are available on
the G2.
Of those, the sentences enabled in ComNav’s 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 pages 51 and 52.
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 – Default NMEA Output Sentences Configuration
1 Not approved by the IEC for Marine use
Note: the NMEA Talker ID for the three heading sentences above may
be changed from “GP” to “HE” for HDG, HDT & ROT, 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 15 on page 55).
L However, configuring the G2 to use the “HE” & “HC” Talker IDs may
not be approved by some Standards organizations!
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