Users Manual

Specifications
9-15
3) Indication for GLL sentence
MI Description
Operating
state
Quality
valid invalid
A Autonomous STD GPS ●
D Differential STD DGPS ●
E Estimated (dead reckoning) mode GPS @EST ●
M Manual input mode GPS @MAN ●
S Simulator mode GPS @SIM ●
N No fix INVALID ●
When receiving the GLL sentence, and if the Status in that sentence is A (Data valid), the quality
type is checked using the Mode Indicator (MI) 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.
4) Indication for RMC sentence
MI Description
Operating
state
Quality
valid invalid
A Autonomous STD GPS ●
D Differential STD DGPS ●
E Estimated (dead reckoning) mode GPS @EST ●
F Float Real Time Kinematic FRTK GPS ●
M Manual input mode GPS @MAN ●
N No fix INVALID ●
P Precise Positioning Service PREC GPS ●
R Real Time Kinematic RTK GPS ●
S Simulator mode GPS @SIM ●
When receiving the RMC sentence, and if the Status in that sentence is A (Data valid) and the
Navigational status is S (Safe), the quality type is checked using the Mode Indicator (MI) 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 if the Status is V (Data invalid) or the Navigational status is C
(Caution), U (Unsafe) or V (Not valid), the operating state decided by the Quality Indicator,
Status or Mode indicator of the receiving highest priority sentence (GGA> GNS> GLL> RMC)
is displayed on the screen.
Note
Note