Wireless Communication Range; Selecting Topology - Advantech ADAM-2510Z User Manual

1.2.3

Wireless Communication Range

Thought the wireless technology brings the advantage of flexibility, cost-effective wir-
ing and easy deployment, but users must understand its limitations to enjoy the ben-
efits of the wireless technology.
The Link Quality Indicator (LQI) of the ADAM-2000 displays how the facts below
affect the wireless signal. Its indicator represents the Received Signal Strength Indi-
cation (RSSI) and the retransmission times of a packet. The better the LQI, the better
the wireless data packet transmission quality. The limitation of the wireless communi-
cation range depends on following factors:
Transmission power

 Interference
 Antenna Performance
 Altitude above Ground
Note! For more information on these factors, contact your supplier.
1.2.4

Selecting Topology

Usually, when building a network solution, the user has to take into consideration the
topology that will be used since different topologies have different characteristics.
The ADAM-2000 series provides start, tree and mesh topologies. No further configu-
ration is required, the ADAM-2000 series will automatically associate the network by
the locations of the ADAM-2000 series units. Users may select the correct topology
and install ADAM-2000s for their application systems. See the image below and
Table 1.2 provide the illustrations and characteristics comparison table of the three
topologies.
Table 1.3: Topology Comparison Table
Topology
Power Consumption
Installation Fee
Network Coverage
Network Capability
ADAM-2000 Series User Manual
Receiver sensitivity

 Line of Sight
 Shelter
 Free Space Loss
Star Tree
Low Medium
Low Medium
Small Large
Small Large
6
Mesh
High
High
Large
Large