Lantronix Maestro E220 Series - Page 206

Services
E220 Series Cellular Router User Guide 206
• $GPGSA,A,3,18,20,21,22,29,,,,,,,,2.4,1.0,2.2*36
Parameters Description
MID GSA Parameters
MID GSA Protocol Header
Example – $GPGSA
Mode1 M – Manual: Forced to operate in 2D or 3D mode
A – 2D Automatic: Allowed to automatically switch 2D/3D
Example – A
Mode2 1 – Fix not available
2 – 2D (<4 SVs used)
3 – 3D (>3 SVs used)
Example – 3
Satellite Used
(1)
SV on Channel 1
Example – 18
Satellite Used
(1)
SV on Channel 2
Example – 20
…. ….
Satellite Used SV on Channel 12
PDOP
(2)
Position Dilution of Precision
Example – 2.4
HDOP
(2)
Horizontal Dilution of Precision
Example – 1.0
VDOP
(2)
Vertical Dilution of Precision
Example – 2.2
Checksum *33
<CR><LF> End of message termination
Table 11.8-6: GSA Data Format
(1)
Satellite used in solution.
(2)
Maximum DOP value reported is 50. When 50 is reported, the actual DOP may be much larger.