NavCom Sapphire Rev.J - Manual (Page 331)

Sapphire Technical Reference Manual Rev. J
331
2.76 NMEAPNCTGGA (ASCII)
SF-3050 Sapphire SF-3040
Supported Output Rate: OFF ONCE OnChange OnTime
OnChange = based on [PROCESSRATE]
OnTime = highest rate licensed
This output message reports position and fix related status information. It is a NavCom
proprietary NMEA type message, and it conforms to the header, checksum, and electrical
characteristics of a standard NMEA string, but is not recognized by the NMEA governing body
as an officially sanctioned message.
NMEAGGA provides two modes: low and high precision. The low precision mode is the
standard NMEAGGA output stream in compliance with NMEA-0183 Standards version 3.0.
(version 4.0 is now available)The high precision mode is an extended mode for the NMEAGGA
output sentence. It is not in compliance with the NMEA-0183 Standards version 3.0 in terms of
message length. The high precision mode adds two digits of precision for the latitude, longitude,
and altitude parameters. NMEAPNCTGGA also provides the same high precision.
The NMEAPNCTGGA output can be scheduled to change at a set frequency which reflects any
changes in position. The changed NMEAPNCTGGA output will automatically be preceeded by a
changed NMEAPNCTDTM output.

Refer to the NMEAGGA and GGAMODE sections for more information.
GGAMODE is used to select low or high precision for NMEAGGA output.
Table 164: PNCTGGA Message Output Format
Output
Format:
$PNCTGGA,time,lat,N/S,lon,E/W,quality,used,hdop,alt,M,separation,M,age,id* checksum
Field# Field Name Description
F1 time
UTC time for position fix in hours, minutes, seconds (hhmmss.ss)
(000000.00 to 235959.99)
F2 Lat
Latitude in degrees and decimal minutes (ddmm.mmmmmm)
(0000.000000 to 8959.999999)
F3 N/S Direction of latitude (N=north, S=south)
F4 Lon
Longitude in degrees and decimal minutes (dddmm.mmmmmm)
(00000.000000 to 17959.999999)
F5 E/W Direction of longitude (E=east, W=west)
F6 quality
Quality of the position fix (0 to 8)
0 = invalid solution
1 = Standalone GPS fix
2 = DGPS fix
3 = PPS fix
4 = Real Time Kinematic
5 = Float RTK
6 = estimated (dead reckoning)
7 = Manual input mode
8 = Simulation mode
F7 used Number of used satellites in the position fix, 00-12
F8 hdop Horizontal dilution of precision, 1 (ideal) to >20 (poor)