Vaisala WMT700 - Manual (Page 39)

Chapter 4 _______________________________ Operating WMT700 in WS425 Analog Output Mode
VAISALA _______________________________________________________________________ 37
0212-038
Figure 11 Wind Speed Voltage Analog Output with WS425 Cable
and Adapter Cable for Analog Voltage Output
Wind Direction Output
When wind direction is measured, WMT700 sends analog output as
simulated potentiometer output voltage referred to as external reference
voltage. The output is a proportional signal 0 ... 100 % of the reference
voltage representing the wind direction. The reference voltage must be in
the range of 1.0 to 4.0 VDC (WMS425) or 0…10 VDC (WMT700). The
output is 0 VDC at zero degrees and increases to the reference voltage at
359 degrees.
Figure 12 on page 38 shows the output for wind direction. With
WMT700, the wind direction signal appears at pin 13 (gray), similarly to
the WS425 wind sensor.