Appendix 61
758-919 Wireless Access Point
Manual
Version 1.0.0
mounted will increase the gain “upwards” in reference to the surface where the
WAP is mounted. Thus the gain “downwards” is limited as expected.
6.3.3
Throughput Diagram
This diagram shows how data throughput decreases when distance increases.
Note the huge difference between using a backshield to focus the radio energy,
and not using a backshield. Using a backshield can greatly increase radio
coverage if used correctly.
The diagram covers both the Wireless Access Point and the Wireless
ETHERNET Gateway in a free field application.
Figure 38: Throughput Diagram
6.4
Data Security for Radio Transmission
It is often assumed that wireless communication systems are less secure than
line-connected systems. When used and operated correctly, wireless systems
offer at least an equivalent level of security.
The following conditions must apply before an unauthorized user can obtain
access to data exchanged via wireless communication:
1. The attacker must be familiar with the communication system in use and be
within the operating range of the system.
2. Radio transmission must take place without the use of any security
mechanisms offered by this technology or the attacker must have adequate
means to determine the security code.
