User Guide
20
4.1.4 GSA - GPS DOP AND
ACTIVE SATELLITES
GPS receiver operating mode, satellites used for navigation,
and DOP values.
Format:
$GPGSA,<1>,<2>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,
<3>,<3>,<3>,<3>,<4>,<5>,<6>*<7><CR><LF>
Example:
$GPGSA,A,3,26,21,,,09,17,,,,,,,10.8,02.1,10.6*07<CR><LF>
Field
1
2
3
4
5
6
7
Example
A
3
26,21,,,09,
17,,,,,,
10.8
02.1
10.6
07
Description
Mode, 'M' = Manual, 'A' = Automatic
Fix type, 1 = not available,
2 = 2D fix, 3 = 3D fix
PRN number, 01 to 32, of satellite
used in solution, up to 12 transmitted
Position dilution of
precision, 00.0 to 99.9
Horizontal dilution of
precision, 00.0 to 99.9
Vertical dilution of
precision, 00.0 to 99.9
Checksum
APPENDIX B
DEFAULT VALUES
The product has the following factory preset default values:
Datum:000 (WGS-84)
NMEA Enable Switch:GGA ON
GLL ON
GSA ON
GSV ON
RMC ON
VTG ON
Checksum ON
Baud Rate:4800 Baud
Elevation Mask:5 degrees
DOP Mask:DOP Select: Auto
GDOP: 20
PDOP: 15
HDOP: 8
Receiver Operating Mode:Normal Mode (without 1PPS)
Commands can be issued to the HI-204L to change the settings of the
receiver. The new settings will remain effective on next power-on as
long as the on-board rechargeable backup battery is not discharged.
After the backup battery is discharged, factory preset default settings
will be used.