Gill Instruments WindObserver II - NMEA Format

Gill Instruments Ltd
_____________________________________________________________________________________________________________
________________________________________________________________________________________________
WindObserver II Page 35 Issue 18
Doc. No. 1390-PS-0004 January 2009
8.10. NMEA Format
Instrument
Identifier
Wind direction Wind speed Units
Checksum
Delimiter
$ IIMWV, 120, R, 002.10, M, A* CC
Start of string Instrument
type
Wind
measurement
Status Check
sum
Where
Wind direction
In degrees relative to N (DDD)
Wind speed
In increments of 0.01 units (±MMM.MM)
Units
M Metres per second (m/s)
N Knots (knots)
P Miles per hour (MPH)
K Kilometres per hour (kph)
F
Feet per minute (fpm)
Start of string
$
Instrument type
IIMWV
Wind measurement
R Relative wind measurement
Status
A Acceptable measurement
V Void measurement
Check sum
Exclusive OR of all characters between ‘$’ and ‘*’
reported as ASCII hex.
A typical WindObserver II configuration suitable for NMEA would be:
B2, E1, F1, G0, K1, L1, M5, O1, P1, U1.
Consult specification NMEA 0183 version 3 (available on the web) www.nmea.org for
complete interface details.