0x1f11a), Magnetic variation – Airmar PB200 User Manual
Page 48
PB200 WeatherStation User Manual revision 1.000
Proprietary and Confidential
42
NMEA 2000® TRANSMITTED PARAMETER GROUP
PGN
127258
(0x1F11A)
Magnetic Variation
Single Frame: Yes
Priority: 7/Y/Y
Update Rate: 1000 mS/Y/Y
Destination: Global
Query Support: No
Access Level: 0
For further information about the NMEA 2000® protocol, including field descriptions refer to the document, NMEA 2000® Standard for Serial-Data
Networking of Marine Electronic Devices available from NMEA.
Notes
The magnetic variation provided in field 5 is calculated based on the current date and position provided by the PB200 internal GPS, using the World Magnetic Model for 2005.
Prior to the internal GPS achieving a position fix, the last known Variation and Age of Service (fields 5 and 4, respectively) are retrieved from EEPROM memory and supplied in
these fields.
See also field 4 of PGN 127250.