User's Manual

October 15 2009 – Installation Guide Draft – Edit Purposes Only Page 30
Installation Guide –April 2010
2010
NOTICE
The device on the end of the network should be
terminated with a 120 ohm resistor .
Figure 2-3 Network Topologies Star and Daisy Chain Configurations
NOTICE
A Daisy configuration is recommended over a Star configuration..
2.1.6.3 ETHERNET
If your system is to be configured for use over Ethernet, the wiring will be slightly
different. Communication cables for Ethernet logically form a straight line bus but the
more devices on that bus, the less efficient the network becomes due to increased
collisions, and the weaker the signal will get over distance. Repeaters can be used to
boost the signal strength; however, a better solution is to place switches at intermediate
positions along the bus. The most common Ethernet topology in use today is the star
configuration with a hub or switch in the center.
2.1.6.4 WIRELESSNETWORK DESIGN CONSIDERATIONS
A wireless network of V-Station 4G offers several advantages over wired networks,
such as convenience, speed of installation, and less wiring. If you
are planning to design a wireless network, consider these points:
Wireless signal interference Metal masses such as HVAC ducts, fire doors, vents,
stairs, etc. disrupt wireless signals. Building and stairwell structures, as well as internal