ATLAS North America Proprietary
Sea Scan ARC Scout MKII Operations Manual
1 of 1
Page: 36
Issue: 1.2.4
SCTM2-OPS
Operations Manual
6.3.1.1
RMC
This string contains the Recommended Minimum data. It contains Time, date position, course, and speed
data. All data fields must be provided. Null fields are used only when the data is temporarily unavailable.
Example:
$GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13,309.62,120598, ,*10
Format Description:
Name
Example
Units
Description
Start Of String
$
$ indicates start of string
Message ID
GPRMC
RMC string identifier
UTC Time
161229.487
hhmmss.ss (h = hour, m =
minutes, s = seconds)
Status
A
A = valid data or V = invalid
data
Latitude
3723.2475
ddmm.mmmm (d = degrees, m
= minutes)
N/S Indicator
N
N = North or S =South
Longitude
12158.3416
dddmm.mmmm (d = degrees,
m = minutes)
E/W Indicator
W
E = East or W = West
Speed Over Ground
0.13
knots
Measured horizontal speed
over ground.
Course Over Ground
309.62
degrees
Measured heading.
Date
120598
ddmmyy (d = day, m = month,
y = year)
Magnetic Variation
degrees
not used
Mode
A
A = Autonomous, D = DGPS, E
= Dead Reckoning
Checksum Delimeter
*
The checksum comes after
this character.
10
2 Digit Hexadecimal
Sentence Terminator
<CR><LF>
Indicates end of sentence.
6.3.1.2
GGA
This string contains position data.
Example:
$GPGGA,161229.487,3723.2475,N,12158.3416,W,1,07,1.0,,M,,M,,*18
Format Description:
