Rainbow Electronics EB-A801 - Manual (Page 15)

EB-A801 User’s Manual V1.0
EverMore Technology Inc.
2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 300, R.O.C.
http://www.emt.com.tw
15
5.5 $GPGSA
GSA---GNSS DOP and Active Satellites
Table 5 contains the values for the following example:
$GPGSA,A,3,07,02,26,27,09,04,15, , , , , ,1.8,1.0,1.5*33
Table 5 GSA Data Format
Name Example Units Description
Message ID $GPGSA GSA protocol header
Mode 1 A See Table 7
Mode 2 3 See Table 6
Satellite Used in
solution 07 Sv on Channel 1
Satellite Used in
solution 02 Sv on Channel 2
Satellite Used Sv on Channel 12
PDOP 1.8 Position Dilution of Precision
HDOP 1.0 Horizontal Dilution of Precision
VDOP 1.5 Vertical Dilution of Precision
Checksum *33
End of message termination
Table 6 Mode 2
Value Description
1 Fix not available
2 2D
3 3D
Table 7 Mode 1
Value Description
M Manual- forced to operate in 2D or 3D mode
A Automatic-allowed to automatically switch 2D/3D