Specifications
9-14
(3.3) Indication for GNS sentence
MI
Description Device
Operating state Quality
Positioning Quality Valid Invalid
A Autonomous GPS
GPS STD ●
GLONASS
GL
STD
●
Galileo
GA
STD
●
Other
OTH
STD
●
D Differential GPS
GPS DGPS ●
GLONASS
GL
DGL
●
Galileo
GA
DGA
●
Other
OTH
DOTH
●
E Estimated (dead reckoning) mode GPS
GPS EST ●
GLONASS
GL
EST
●
Galileo
GA
EST
●
Other
OTH
EST
●
M Manual input mode GPS
GPS MAN ●
GLONASS
GL
MAN
●
Galileo
GA
MAN
●
Other
OTH
MAN
●
S Simulator mode GPS
GPS SIM ●
GLONASS
GL
SIM
●
Galileo
GA
SIM
●
Other
OTH
SIM
●
N No fix GPS
GPS INVALID ●
GLONASS
GL INVALID ●
Galileo
GA INVALID ●
Other
OTH INVALID ●
When receiving the GLL sentence, and if the Status in that sentence is A (Data valid), the
quality type is checked using the MI (Mode Indicator) as mentioned in the table above.
- If the quality is valid, the operating state is indicated with the position and time information.
- If the quality is invalid, or the Status is V (Data invalid), the next RMC sentence is referred.
- See 5.2 for method to display the quality information on the regular screen.
Note
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