5
the Mesh Network system, the ZigBee standard redresses
misbalances in any data logging system, responding to
weaknesses, inefficiencies, new network structure (with the
additional or removal of devices) through self correction.
1.4.
The DataNet System
The basic DataNet system will contain at least one of the
following units:
•
DataNet data logger – Part Number DNL804, DNL808,
DNL810, DNL910, DNL920, DNL910-PA, DNL920-PA
•
Receiver/Repeater unit – Part Number DNR900
•
Mini Repeater – Part Number DNR800
•
Mini-USB cable
•
Power adapter (one per DataNet unit ordered)
•
DataNet Software CD
1.4.1.
The Data Logger
There are seven distinct data logger models compatible with
the DataNet system. These are the so-called
end units
of the
system. These loggers support up to four external sensors
and two internal sensors, temperature and humidity,
depending on the specific model. Data is recorded and stored
to the logger’s internal memory and transmitted over the
network to the DataNet software running on the PC.
The data logger is programmed to consume as little power as
possible during operation, in order to conserve the battery life.
When not transmitting or recording data the units are in
sleep
mode and they
wake up
when needed.
