5.4 ASCIITime Code Data Formats
This section describes the different time code data format selections available for use with
SecureSync option cards that accept ASCII data streams as inputs or outputs via their RS-485
and RS-232 interfaces.
Supported are formats like NMEA, BBC, Spectracom, GSSIP, and Endrun.
5.4.1 NMEA GGA Message
The GGA Format provides essential fix data which includes 3D location and accuracy data.
E x a m p l e m e s s a g e :
$GPGGA,123519.00,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47
NOTE: The GGA format does not support precision timing and 1PPS functionality; the WebUI
may permit the selection of Message or PPS Pin as PPS Source, but the NMEA GGA Message
will not use either. If this data is required for your application, use the ZDA Message format
instead (see "NMEA ZDA Message" on the next page).
Where:
GGA Global Positioning System Fix Data
123519.00 Fix taken at 12:35:19 UTC
4807.038,N Latitude 48 deg 07.038' N
01131.000, E Longitude 11 deg 31.000' E
1 Fix quality:
0 = Invalid
1 = GNSS fix (SPS)
2 = DGPS fix
3 = PPS fix
4 = Real Time Kinematic
6 = estimated (dead reckoning) (2.3 feature)
7 = Manual input mode
8 = Simulation mode
08 Number of satellites being tracked
0.9 Horizontal dilution of position
545.4,M Altitude, Meters, above mean sea level
46.9,M Height of geoid (mean sea level) above WGS84 ellipsoid
SecureSync User Reference Guide 497
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