ashtech DG16 Reference Manual page 136

$PASHR,GDC
The response message is output in the format:
$PASHR,GDC,m1,s2,f3,f4,d5,d6,f7,f8,f9,d10,s11,s12*hh
Table 6.20 outlines the parameters.
Parameter
m1 UTC of position in hours, minutes, and decimal seconds
(hhmmss.ss)
s2 Map projection type
f3 Easting (x) of the user grid coordinate (meters)
f4 Northing (y) of the user grid coordinate (meters)
d5 Positioning mode Indicator
d6 Number of GPS satellites being used
f7 Horizontal Dilution of Position (HDOP)
f8 Altitude (meters)
M Altitude units
f9 Geoidal separation in meters w.r.t. selected datum and
Geoid Model
d10 Age of differential corrections
s11 Differential reference station ID
s12 Datum type
*hh Checksum
Typical GDC response message:
$PASHR,GDC,015151.00,EMER,588757.623,+4136720.056,2,04,03.8,000
12.123,M,-031.711,M,14,1010,W84*2A
116
Table 6.20. GDC Message Structure
Description
• 1: Autonomous position
• 2: RTCM differential, or CPD float position
• 3: Carrier Phase differential (CPD) fixed
DG14 and DG16 Board & Sensor Reference Manual
Range
000000.00 to
235959.90
EMER, TM83,
OM83, LC83,
STER, LC27,
Tm27, TA22
-9999999.999 to
+9999999.999
-9999999.999 to
+9999999.999
1, 2, 3
3 to 12
00.0 to 99.9
-9999999.999 to
+9999999.999
M(eters)
-999.999 to
+999.999
0 to 999
0000 to 1023
W84, USR
2-character hex