NavCom Sapphire Rev.J - Manual (Page 316)

Sapphire Technical Reference Manual Rev. J
316
2.64 NMEAGSA (ASCII)
SF-3050 Sapphire SF-3040
Supported Output Rate: OFF ONCE OnChange OnTime
OnChange = when slow nav is completed (1Hz)
OnTime = minimum 1Hz
This output message reports 2D/3D solution mode, DOP values, and active satellite information,
and is in compliance with NMEA-0183 Standards version 3.0. Field F7 is added to comply with
v4.1 of the NMEA standard.
Table 151: GSA Message Output Format
Output
Format:
$GPGSA,mode,solution,used,pdop,hdop,vdop*checksum
Field# Field Name Description
F1 mode
Mode
M = manual solution (forced to operate in 2D or 3D mode)
A = automatic (automatically switches between 2D and 3D)
F2 solution
Solution
1 = fix not available
2 = 2D
3 = 3D
F3 used PRN of satellites used in navigation solution (12 fields, null for empty fields)
F4 pdop Dilution of position
F5 hdop Horizontal dilution of position
F6 vdop Vertical dilution of position
F7 System ID 1 for GPS, 2 for GLONASS (NMEA v4.1 only)
F8 *CRC Checksum
Example: $GPGSA,A,3,03,08,13,16,20,23,25,27,,,,,2.4,1.4,1.9*36