Vaisala WS425FG - Manual (Page 52)

User's Guide ______________________________________________________________________
50 ______________________________________________________________________________
The WATE command is used in conjunction with the zero wind speed
verifier. If the test is performed outdoors, the supplied cloth bag must
be placed over the verifier to eliminate the effect of any ambient wind.
See
Figure 18 on page 68 . It is extremely important that the WATE
command is performed only when the verifier is installed on the sensor.
Performing the test without the verifier (and bag if required) will
produce anomalous test results and it is not a valid test. After the verifier
is installed on the sensor, it is necessary to wait five minutes before
performing the test. The five-minute waiting period is needed for the
temperature of the verifier interior to equalize without thermal
gradients.
The response to the WATE command is the following:
Performing amplitude test...
Measuring at level 48% (1)
.
.
.
Measuring at level 48% (30)
WAXXXXXX0503XXX.XXXX.XXKXXXX
P Heater voltage XX.X Volts
P Array heater resistance X.X Ohms
P Heaters off voltage X.X Volts
P Incoming supply voltage XX.X Volts
P 5 volt supply X.XX Volts
P +10 volt supply XX.X Volts
- Bad 1 second reading counter = X
P Path 0 signal quality index XX
P Path 1 signal quality index XX
P Path 2 signal quality index XX
P Path 3 signal quality index XX
P Path 4 signal quality index XX
P Path 5 signal quality index XX
Wait for reset...
ASOS Ice-Free Wind Sensor
Manufactured by VAISALA USA INC.
Model number 425 NWS
Firmware version v4.50
Internal version v4.00
Initializing...
Ready
Status=P
To pass the WATE command, the sensor response must meet two
conditions: