S A N J O S E N A V I G A T I O N , I N C .
P r o f e s s i o n a l i n N a v i g a t i o n & C o m m u n i c a t i o n
S
S
A
A
N
N
J
J
O
O
S
S
E
E
N
N
A
A
V
V
I
I
G
G
A
A
T
T
I
I
O
O
N
N
,
,
I
I
N
N
C
C
.
.
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22
ISO 9001
NO. T2000-351
Chapter 8 Sentence Description
8.1 NMEA-0183 Protocol
Approved Sentences are those of which formats are defined and fixed within the NMEA
0183 standard. Any portion within an approved sentences format is NOT user-definable.
Approved sentences generally are in the following form:
Sentences Descriptions
GGA
Standard output message for detailed position information
GLL
Older message for simple position information only
GSA
List of satellites used in solution
GSV
Detailed satellites information including signal strengths
RMC
Combination message of position and velocity
VTC
Standard output message for velocity
ZDA Date
/
Time
DTM Datum
NMEA 0183 Format was defined by the National Marine Electronics Association (NMEA),
Standard for Interfacing Marine Electronic Devices, with Version 2.30 on March 1 1998.
