User's Manual

October 15 2009 – Installation Guide Draft – Edit Purposes Only Page 27
Installation Guide –April 2010
2010
System component selection is specific to each installation, but a minimum system
would consist of a finger-scan device mounted on or near an access point, an electric
lock, and cabling.
A more complex system might consist of devices at multiple access points (each with an
electric door lock), a multi-point controller, networking, and a PC to run the access
controller and SecureAdmin Server software.
See the diagram below for an example (non-Ethernet) system diagram.
Figure 2-2 Example RS-485 System Diagram
Installation of locks and access controllers should be completed according to their
respective manufacturers' specifications and in accordance with all local codes. Final
connections to the device are explained in more detail in Chapter 4.
To avoid externally generated transients, do not run any wires near utility AC power
wiring, lightning rod grounding wire, etc. Grounding equipment is required for ESD
protection and safety.
2.1.6 CHOOSE NETWORK TYPE
If your installation requires the use of network communications, then the choice of
cable, the cable run length, the network topology, and the termination of the network are
important aspects that must be considered. The V-Station 4G and V-Flex 4G devices
can be networked using RS-232, RS-485, or Ethernet protocols.
The table below outlines relevant parameters of the RS-485, RS-232, and 100 baseT
Ethernet communication protocols.
Table 2-1 Communications Network Comparison
Spec RS-485 RS-232 100BaseT