Vaisala WXT520 - Manual (Page 106)

User’s Guide ______________________________________________________________________
104 _________________________________________________________________ M210906EN-C
TXT Text Transmission
These short text messages and their interpretation are shown in Table 11
on page 136 .
The text transmission response format:
$WITXT,xx,xx,xx,c--c*hh<cr><lf>
4 = Transducer id for generic field
* Checksum delimiter
2D = Two-character CRC for the response.
<cr><lf> = Response terminator
1. See Chapter 8, section Supervisor Message, Setting Fields for definitions
of the Heating voltage field.
Table 8 Transducer Table
Transducer Type Units Field Comments
Temperature C C = Celsius
F = Fahrenheit
Angular displacement
(wind direction) A D = degrees
Wind speed S K = km/h, M = m/s, N = knots
S = mph, non-standardized 1
Pressure P B = bars, P = Pascal H = hPa, I = inHg, M = mmHg
Humidity H P = Percent
Accumulated
precipitation V M = mm, I = in, H = hits non-standardized1
Time (duration) Z S = seconds non-standardized1
Intensity (flow rate) R M = mm/h, I = in/h, H = hits/h
for rainfall
M = hits/cm
2 h, I = hits/in 2 h, H
= hits/h for hails
non-standardized1
Voltage U V = volts (also 50 % duty cycle
for heating) N = not in use, F = 50% duty
cycle for heating, W = full
power for heating
Generic G None (null)
P=Percent
1. Not specified in the NMEA 0183 Standard.
where
$
= Start of the message