Altina GGM308U manual Gnss DOP and Active Satellites GSA, Value Description

Checksum	*2C
<CR> <LF>		End of message termination

5.4. GNSS DOP and Active Satellites (GSA)

Table 5-4 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 5-5GSA Data Format

Name			Example	Units	Description
Message ID			$GPGSA		GSA protocol header
Mode 1			A		See Table 5-6
Mode 2		3			See Table 5-7
Satellite Used(1)	07				Sv on Channel 1
Satellite Used(1)	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
<CR> <LF>					End of message termination
NOTE: Satellite used in solution.
Table 5-6 Mode 1
Value				Description

M Manual—forced to operate in 2D or 3D mode

A 2DAutomatic—allowed to automatically switch 2D/3D

Table 5-7	Mode 2
Value	Description

1Fix Not Available

22D

33D

10