ashtech DG14, Reference Manual

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