User Guide

22
4.1.6 RMC - RECOMMANDED MINIMUM
SPECIFIC GPS/TRANSIT DATA
Time, date, position, course and speed data.
Format:
$GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,
<11>,<12>*<13><CR><LF>
Example:
$GPRMC,104549.04,A,2447.2038,N,12100.4990,E,
016.0,221.0,250304,003.3,W,A*22<CR><LF>
Field
1
2
3
4
5
6
7
8
9
10
11
12
13
Example
104549.04
A
2447.2038
N
12100.4990
E
016.0
221.0
250304
003.3
W
A
22
Description
UTC time in hhmmss.ss format,
000000.00 ~ 235959.99
Status, 'V' = navigation receiver warning,
'A' = valid position
Latitude in dddmm.mmmm format
Leading zeros transmitted
Latitude hemisphere indicator,
'N' = North, 'S' = South
Longitude in dddmm.mmmm format
Leading zeros transmitted
Longitude hemisphere indicator,
'E' = East, 'W' = West
Speed over ground, 000.0 ~ 999.9 knots
Course over ground, 000.0 ~ 359.9 degrees
UTC date of position fix, ddmmyy format
Magnetic variation, 000.0 ~ 180.0 degrees
Magnetic variation direction, 'E' = East, 'W' = West
Mode indicator
'N' = Data invalid
'A' = Autonomous
Checksum
'D' = Differential
'E' = Estimated
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.