Anaren A110LR09x, User Manual

Page: 16 / 38

Page 16 of 38 A110LR09x
– User’s Manual
Release Date 10/31/11
A helpful document that can be used as a starting point in understanding the use of short range devices
(SRD) in Europe is the European Radio Communications Committee (ERC) Recommendation 70-03 E,
downloadable from the European Radio Communications Office (ERO) http://www.ero.dk.
The end user is responsible for ensuring compliance with harmonized frequencies and labeling
requirements for each country in which the end device is marketed and sold.
For more information see:

Radio And Telecommunications Terminal Equipment (R&TTE)
http://ec.europa.eu/enterprise/rtte/index_en.htm

European Conference of Postal and Telecommunications Administrations (CEPT)
http://www.cept.org/

European Telecommunications Standards Institute (ETSI) http://www.etsi.org/
European Radio Communications Office (ERO) http://www.ero.dk/
2.4. Potential Interference Sources

Alarm systems
o
These typically use low duty cycles and are therefore easy to avoid using
acknowledge/retransmit methods

Car alarms (internal motion sensors)

Video surveillance
o
These are typically operated on a fixed channel determined at installation time
and can be avoided by using clear channel assessment. It may be useful to
change the channel used by the video surveillance equipment also, if possible.
2.4.1. Time critical data
If the user requires specific time critical data throughput that cannot tolerate the delays of
potentially many re-transmissions, the user is encouraged to implement an environment-aware
algorithm that periodically monitors/scans the frequency band and maintain a list of “best
available” channels.
2.5. Approved Usage
These radio modules can be used in a variety of physical layer configurations; the following
restricts the use to maintain compliance with the above referenced certification bodies.
The user is encouraged to use minimum power required to establish a link, thus minimizing
interference.
Changes or modifications to the module and/or operation outside the limits set forth below are
prohibited and could void the user’s authority to operate the modules.
Uses of these radio modules are limited to the specific register settings that are optimized for
performance and compliance. Register setting files are provided online at
www.anaren.com .