Vaisala WS425FG - Manual (Page 51)

Chapter 4 ________________________________________________________________ Operation
VAISALA_______________________________________________________________________ 49
The WR command initiates a system reinitialization. The processor
executes the initialization routine and returns the initialization message
(firmware revision, sensor status).
The response to the WR command contains the following:
ASOS Ice-Free Wind Sensor CR LF
Manufactured by Vaisala USA Inc. CR LF
Model number WAS 425NWS
Firmware version 2.01 CR LF
Initializing ….CR LF
Ready CR LF
Status = P/F/H CR LF (only the correct status will be
presented)
The sensor performs a system reset and issues the system reset
command message upon sensor power-up.
The user should hold off sending commands until the full response is
received. This may take up to 30 seconds.
WATE Command
This command invokes the sensor test with reduced excitation
amplitude. The command format is:
WATE CR LF
The purpose of the WATE command is to determine the sensor zero
offset and verify that a sufficient signal-to-noise margin exists during
high wind speeds.
The WATE command returns the sensor Signal Quality Index (SQI)
measurement with a reduced signal amplitude. This command exists in
sensor firmware versions v4.00 and above. The command is enhanced
in sensor firmware versions v4.50 and above.
This command is typically used to verify the sensor performance during
the preventive maintenance procedures. The sensor will stop the current
measuring when it receives this command. After this, the transducer
excitation amplitude is reduced followed by a time delay in order to
clear the measurement buffers. The sensor will perform 30 test
measurements in a loop with a reduced amplitude signal. To run
command takes about 5 minutes. At the end of the WATE test, the
sensor will perform a full reset when returning to normal operation.