Vaisala Hydromet Data Collection Platform - Manual (Page 92)

User's Guide ______________________________________________________________________
90 __________________________________________________________________ M210933EN-C
NMEA GGA Receiver
The NMEA GGA receiver is used to parse a compass message from a
GPS device.
To configure the sensor in Lizard, proceed as follows:
1. Open an existing setup in the Setup view or create a new one.
2. Proceed to the Additional sensors view.
3. Select NMEA_GGA from the Available list and click the Add
button to insert the sensor into the setup.
4. Select the port in the Options frame and set the timeout. The
recommended value for the timeout is more than 1.5 times the time
between two consecutive messages.
Using GGA Variables
To check which variables are available, proceed as follows:
1. Go to the Reports view.
2. Create a new report or select an existing one to include the
variables for the compass.
3. Click NMEA_GGA_1 the Available list box in the Select
variables frame.
4. Add the variables of interest to the report.
For more information about the available variables, see the device
manufacturer's documentation or the NMEA-0183 standard. The
variables are presented in
Table 7 on page 90 .
Table 7 GGA Variables
Variable Description
Ant_height Altitude in meters
DPGS_el_time Time in seconds since last DGPS
update
DGPS_id DGPS station ID number
Geoid_height Height of geoid (mean sea level)
above WGS84 ellipsoid