Specifications
Command/Response Formats 181
Commands
$PASHR,UTM
The response message is in the form:
$PSHR,UTM,m1,m2,f3,f4,d5,d6,f7,f8,M,f9,M,d10,s11*cc <enter>
The antenna altitude is either ellipsoidal (default) or geoidal (mean-sea-level) depending on the
selection made with $PASHS,HGT (see UCT section). The geoidal altitude can be also derived by
subtracting the geoidal separation from the ellipsoidal altitude.
Table 6.117: UTM Message Structure
Parameters Description Range
m1 UTC of position in hours, minutes, and decimal seconds
(hhmmss.ss)
0 - 235959.90
m2 Zone number for coordinates
Zone letter for coordinates (N = north, S = south)
1-60, 99
‘N’, ‘S’
f3 East UTM coordinate (meters) ±9999999.999
f4 North UTM coordinate (meters) ±9999999.999
d5 Position indicator.
1: Raw position
2: RTCM code differential, or CPD float solution
3: Carrier Phase differential (CPD) fixed
1, 2, 3
d6 Number of GPS satellites being used 3 - 12
f7 Horizontal dilution of precision (HDOP) 999.9
f8 Altitude in meters ±99999.999
M Altitude units (M = meters) M
f9 Geoidal separation in meters ±999.999
M Geoidal separation units (M = meters) M
d10 Age of differential corrections 0 - 999
s11 Differential reference station ID 4 char string
*cc checksum