Vaisala WS425 - Manual (Page 50)

USER'S GUIDE____________________________________________________________________
50 __________________________________________________________________ M210361EN-E
The new bit rate setting is activated as soon as the configuration changes
are saved (selection 12) and operation is resumed (selection 14).
NOTE For the first 5 seconds after powering up the sensor, the serial line
parameters are 9600b, 8, N, 1.
Parity
The following options are available:
- None
- Odd
- Even
Data Bits
The available options are 7 or 8 data bits.
Save Configuration
After adjusting one of the configuration parameters, apply this function
to save the new settings.
Zero Speed Calibration
The zero speed calibration is done to all sensors in the factory before
delivery. There is no reason to perform this tuning periodically. Instead,
use the margin verifier for periodic testing as described in section
Periodic Testing on page 71. Do the zero speed calibration only after
possible firmware update or if the periodic test indicates too high wind
speeds.
To perform the zero speed calibration, do the following:
1. Remove the bird spikes and install the verifier as described in
Figure 14 on page 72.
2. Select zero speed calibration from the configuration menu and wait
until the sensor resumes to normal operation.
3. Check that the sensor passes the periodic test.
CAUTION Do not perform the zero speed calibration unless the margin verifier is
mounted on the sensor. Use this function only if you suspect that the
sensor characteristics have changed.