Model 9289
Spectracom Corporation
NetClock/NTP Network Time Provider Instruction Manual
5-10
5.8
Format 90
Format 90 provides a position data stream in NMEA 0183 GPGGA GPS Fix data format.
The Format 90 data structure is shown below:
$GPGGA,HHMMSS.SS,ddmm.mmmm,n,dddmm.mmmm,e,Q,SS,YY.y,+AAAAA.a,M,,,,*CC CR
LF
where:
$GP =
GPS
System
Talker
GGA =
GPS Fix Data Message
HHMMSS.SS =
Latest time of Position Fix, UTC. This field is blank until a 3D fix is
acquired
ddmm.mmmm,n =
Latitude
dd =
degress, 00...90
mm.mmmm =
minutes, 00.0000....59.9999
n =
direction, N = North, S = South
dddmm.mmmm,e =
Longitude
ddd =
degress, 000...180
mm.mmmm =
minutes, 00.0000....59.9999
e =
direction, E = East, W = West
Q =
Quality Indicator,
0 =
No 3D fix
1 =
3D fix
SS =
Number of satellites tracked, 0...8
YY.Y =
Dilution of precision, 00.0...99.9
+AAAAA.a,M =
Antenna height in meters, referenced to mean sea level
,,,, =
Fields for geoidal separation and differential GPS not supported
cc =
Check sum message, HEX 00...7F
Check sum calculated by Xoring all bytes between $ and *.
CR =
Carriage Return
LF =
Line Feed
Example:
$GPGAA,151119.00,4307.0241,N,07729.2249,W,1,06,03.2,+00125.5,M,,,,*3F
The example data stream provides the following information:
Time of Position Fix:
15:11:19.00 UTC
Latitude:
43°
07.0241’
North
Longitude:
77°
29.2249’
West
Quality:
3D
fix
Satellites Used:
6
Dilution of Precision:
3.2
Antenna Height:
+125.5 meters above sea level
Check Sum:
3
Summary of Contents for 9289
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