Vaisala WXT530 Series User Manual

Parameter Description
[A]
Averaging time: 1 ... 3600 seconds
Defines the period over which the wind speed and direction averaging is
calcula
ted. Same period is also used for maximum and minimum calculation. See
Appendix D Wind Measurement Averaging Method on page 201 for dierence in
averaging practices when A<I and A>I.
[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.
[U]
Speed unit: M = m/s, K = km/h, S = mph, N = knots
[D]
Direction oset:
-180 ... 180°, see Wind Direction Oset on page 51.
[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
When using MWV wind messages in NMEA 0183, one of the [R] field bits 1-6 must be 1.
For representative wind values, use an averaging time that is long enough in relation to
sampling ra
te (at least four samples per averaging time).
8.1.1.3 Changing the Settings (aWU)
You can change the following settings:
• P
arameters included in the wind data message
• Update interval
• Averaging time
• Wind speed max/min calculation mode
• Speed unit
• Direction oset
• NMEA wind formatter
Change the se
t
tings with the following command.
Command format in ASCII and NMEA 0183:
aWU,R=x,I=x,A=x,G=x,U=x,D=x,N=x,F=x<cr><lf>
WXT530 Series User Guide M211840EN-D
120
sales@streamlinemeasurement.co.uk
01457-864334
www.streamlinemeasurement.co.uk

Vaisala WXT530 Series Specifications

General

Brand	Vaisala
Model	WXT530 Series
Category	Transmitter
Language	English