Instruction manual

Page 104 Z-12 Real-Time Sensor Operation and Reference Manual
NMEA DOP and Active Satellite Message
$PASHS,NME,GSA
This command enables/disables the DOP and active satellite message to be sent out to
the serial port. The structure is $PASHS,NME,GSA,x,y , where x is port A, B or C
and y is ON or OFF.
Example: Enable GSA message on port B
$PASHS,NME,GSA,B,ON followed by output command
$PASHS,OUT,x,NMEA where x is the output port.
$GPGSA
The response is a message in the form
$GPGSA,c1,d1,d2,d3,d4,d5,d6,d7,d8,d9,d10,d11,d12,d13,f1,f2, f3*CC where each
item is as described in Table 4.50.
Example:
$GPGSA,A,2,1,4,6,7,9,11,3,2,5
-00.4 Range residual for second SV in GSS message
+00.2 Range residual for third SV in GSS message
+00.5 Range residual for fourth SV in GSS message
+00.7 Range residual for fifth SV in GSS message
-00.8 Range residual for sixth SV in GSS message
64 Message checksum in hexadecimal
Table 4.50: GPGSA Structure
Item Description
c1 Mode M: manual A:automatic
d1 Mode 2:2D 3:3D
d2-d13 Satellites used in position computation (range 1 to 32)
f1 PDOP (range 0 - 9.9)
f2 HDOP (range 0 - 9.9)
f3 VDOP (range 0 - 9.9)
cc Checksum
Table 4.49: Typical GRS Response Message (continued)
Item Description