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Vaisala WINDCAP WMT52 - Page 100

Vaisala WINDCAP WMT52
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User’s Guide ______________________________________________________________________
98 ___________________________________________________________________M210925EN-B
[G] = Wind speed max/min calculation mode: 1 or 3
seconds
G =1: Traditional max/min calculation is performed
both for speed and direction.
G =3: Gust & lull are calculated for wind speed,
while direction calculation is as it is with G =1. In
the output messages, gust & lull replace the wind
speed max/min values (Sx, Sn), respectively.
For more detailed definitions of max/min and gust &
lull calculations see section Wind Measurement
Principle on page 23.
[U] = Speed unit: M = m/s, K = km/h, S = mph, N = knots
[D] = Direction offset: -180 ... 180°, see Wind Direction
Offset on page 37.
[N] = NMEA wind formatter: T = XDR (transducer
syntax), W = MWV (wind speed and angle)
Defines whether the wind message is sent in XDR or
MWV format.
[F] = Sampling rate: 1, 2, or 4 Hz
Defines how frequently the wind is measured. Lower
sampling rate reduces the power consumption, but it
also weakens the measurement representativeness..
<cr><lf> = Response terminator
NOTE
When using MWV wind messages in NMEA 0183, one of the [R]
field's bits 1-6 must be 1.
NOTE
For representative wind values, , use long enough averaging time in
relation to sampling rate (at least four samples per averaging time).

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