Gill Instruments Ltd
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MaxiMet
Page 50
Issue 1
Doc. No. 1957-PS-000x
March 2015
6.7.
Configuring MaxiMet for NMEA Output
Connect a default set MaxiMet to a PC as described in Para 4.6.
Open MetSet as described on Para 6.2 and click on the Reporting page.
Change the Report Format drop down menu from USERDEF to NMEA.
On the Comms Page select the required Interface, generally RS422.
On the Comms Page Select the required Baud rate, normally 4800 bauds (or sometimes 9600
baud).
Click on Save Settings to Device.
GMX200
GMX200 NMEA data strings comprise of: -
$WIMWV,049,R,000.03,N,A*03<CR><LF>. Where:-
$WIMWV
Wind Instrument Mean Wind direction and Velocity.
049
Wind Direction.
R
Relative Wind measurement, wind speed and/or direction information,
reported with respect to the MaxiMet North marker.
000.03
Wind Speed.
N
Knots (NMEA output fixed to Knots measurement only).
A
Acceptable measurement (V is a void fail measurement).
O3
Hex Check Sum.
Immediately followed by:-
$WIMWV,049,T,,N,A*18<CR><LF>.
$WIMWV
Wind Instrument Mean Wind direction and Velocity.
049
Wind Direction.
T
T
rue Wind measurement, wind speed and/or direction information,
corrected by a compass and GPS (option) to give accurate data
regardless of where north marker is aligned.
,,
Wind Speed only available if a GPS option is fitted.
N
Knots (NMEA output fixed to Knots measurement only).
A
Acceptable measurement (V is a void fail measurement).
OC
Hex Check Sum.
Example GMX200 Data.
$WIMWV,069,R,004.06,N,A*00
$WIMWV,122,T,,N,A*14
