Figure 10: Example of
”
Radar” application table
loss of data from some modules can commonly occur in case of operating of a large number of modules in one radio
network. These losses can last for several hours or days.
The greatest risks of permanent breakdown of module broadcasting are commonly caused by human activities within
the installation. It is mainly about the following risks:
•
temporary or permanent shading of the antenna (e.g. due to building operations);
•
mechanical damage of the module, the antenna cable or the antenna when handling things at the installation
site.
To eliminate these risks, it is recommended to pay close attention to selection of the installation site and choice of
antenna and antenna location so that to find appropriate compromise between qualities of signal and the level of
risk of mechanical damage of the module or antenna. It is necessary to carry out the installation carefully with
using of high-quality cables and mounting components.
To prevent an unexpected breakdown, it is recommended to perform regular monitoring of all broadcasting data,
i.e. readings, processor temperature and battery voltage. If some of the parameters goes beyond the common steady
value, it is recommended to contact the installation site caretaker and ask for the potential cause of the anomaly
or perform the physical check on the installation site.
5
Troubleshooting
5.1
Possible causes of module failures
If during operation of WB169-430 module some anomaly, malfunctions or other troubles are recognized, the possible
causes of the failures can be classified by following categories:
5.1.1
Power supplying failures
The module is supplied by electrical power from the long-life internal battery. Approximate battery life is specified
in paragraph
”
Modul usage”. Battery life can be negatively influenced by circumstances that are described in
detail in paragraph
”
Risk of premature battery discharge”.
Low battery power becomes evident as irregular drop-outs of signal reception from the module, finally the radio
connection with the module completely fails.
Battery is soldered into the printed circuit board of the module and the module has to be disassembled for its
replacement. Battery replacement can be performed only by qualified and experienced person. Soldering of battery
WB169-430
26
