Installation Manual

S5-4 89-041 Section 5 Issue 5
GGA - Global Positioning System Fix Data
Field Comment
UTC Of Position used
Latitude (2 fields) Used
Longitude (2 fields) Used
GPS Quality Indicator Used,
I ,3-> Position with Low Accuracy
2,4,5 -> Position with High Accuracy
6 -> Dead Reckoning with Low Accuracy
7 -> Manual mode with low accuracy
OTHER -> No Position
Number of Satellites in use ignored
Horizontal Dilution of precision (HDOP) ignored
Altitude re: main sea level (2 fields) ignored
Geoidal Separation (2 fIelds) Ignored
Age of Diff Data Ignored
Diff Reference Station Ignored
GLL - Geographic Position - Latitude I Longitude
Field Comment
Latitude (2 fields) Used
Longitude (2 fIelds) Used
UTC of Position used
Status Used
A-> Allows look on Mode indicator or
Position with Low Accuracy if Mode
indicator is empty or has strange value
V-> Disallows using the sentence
Mode Indicator
A -> Position with Low Accuracy
D -> Position with High Accuracy
E -> Dead Reckoning Mode with Low
Accuracy
M -> Manual Mode with Low Accuracy
Empty or OTHER.> using Status only
GNS - GNSS Fix Data
If the Mode Indicator is a NULL field, the sentence is ignored.
Field Comment
UTC of Position used
Latitude (2 fields) Used
Longitude (2 fields) Used
Mode Indicator A, P> Position with low accuracy
D, R, F -> Position with high Accuracy
E -> Dead Reckoning Mode with Low
accuracy
M -> Manual Mode with low accuracy
OTHER -> No Position
Tot Number of Satellites in Use Ignored
HDOP Ignored
Antenna Altitude Used in aircraft mode else Ignored
Geoidal Separation Ignored
Age Of Diff Data Ignored
Diff Reference Station ID Ignored