Vaisala WXT520 User Manual
Page 112
User’s Guide ______________________________________________________________________
110 _________________________________________________________________ M210906EN-C
[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
[U]
=
Speed unit: M = m/s, K = km/h, S = mph, N = knots
[D]
=
Direction offset: -180 ... 180°, see section
.
[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).