Vaisala AWS330 - Manual (Page 221)

Chapter 7 ___________________________________________________________ Troubleshooting
VAISALA ______________________________________________________________________ 219
Commands for Troubleshooting Purposes
For most of the sensor inputs, there are data validation parameters to
check the following quality parameters for the measurement:
- Maximum value: the maximum climatological value for the sensor
measurement.
- Minimum value: the minimum climatological value for the sensor
measurement.
- Step change: the maximum step change for the sensor value between
two consecutive measurements.
You can set all of these parameters with Lizard Setup Software. For more
information, please refer to Vaisala HydroMet Data Collection Platform
User's Guide, Volumes 2 and 3.
If the sensor value is outside the maximum or minimum values, or it has
altered more than the maximum step change allowed, then data will be
flagged as INVALID. Invalid data is typically displayed as ///// (this is a
parameter that you can set). If a sensor displays invalid data, this is an
indication that the sensor is faulty or out of calibration, or there is a
problem in powering or measuring the sensor.
Warnings and Errors
There may be some problems if you see either of the following prompts:
/ E>
/ W>
/ E>
means that there are errors, and
/ W>
means that there are
warnings.
It is normal to have one or two warnings after the serial connection to the
QML logger has been reset; for example, if you have turned your PC off,
you can ignore these warnings.
To see active warnings, type warnings. To clear active warnings, type
warnings clear. Warnings indicate that there are some problems in the
software.